/* * Mesa 3-D graphics library * Version: 3.4 * * Copyright (C) 1999-2000 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #ifdef PC_HEADER #include "all.h" #else #include "glheader.h" #include "context.h" #include "image.h" #include "mem.h" #include "mmath.h" #include "span.h" #include "texformat.h" #include "teximage.h" #include "texstate.h" #include "types.h" #endif /* * NOTES: * * Mesa's native texture datatype is GLubyte. Native formats are * GL_ALPHA, GL_LUMINANCE, GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, GL_RGBA, * and GL_COLOR_INDEX. * Device drivers are free to implement any internal format they want. */ #ifdef DEBUG static void PrintTexture(const struct gl_texture_image *img) { GLuint i, j, c; GLubyte *data = img->Data; if (!data) { printf("No texture data\n"); return; } switch (img->Format) { case GL_ALPHA: case GL_LUMINANCE: case GL_INTENSITY: case GL_COLOR_INDEX: c = 1; break; case GL_LUMINANCE_ALPHA: c = 2; break; case GL_RGB: c = 3; break; case GL_RGBA: c = 4; break; default: gl_problem(NULL, "error in PrintTexture\n"); return; } for (i = 0; i < img->Height; i++) { for (j = 0; j < img->Width; j++) { if (c==1) printf("%02x ", data[0]); else if (c==2) printf("%02x%02x ", data[0], data[1]); else if (c==3) printf("%02x%02x%02x ", data[0], data[1], data[2]); else if (c==4) printf("%02x%02x%02x%02x ", data[0], data[1], data[2], data[3]); data += c; } printf("\n"); } } #endif /* * Compute log base 2 of n. * If n isn't an exact power of two return -1. * If n<0 return -1. */ static int logbase2( int n ) { GLint i = 1; GLint log2 = 0; if (n<0) { return -1; } while ( n > i ) { i *= 2; log2++; } if (i != n) { return -1; } else { return log2; } } /* * Given an internal texture format enum or 1, 2, 3, 4 return the * corresponding _base_ internal format: GL_ALPHA, GL_LUMINANCE, * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA. * Return -1 if invalid enum. */ GLint _mesa_base_tex_format( GLcontext *ctx, GLint format ) { /* * Ask the driver for the base format, if it doesn't * know, it will return -1; */ if (ctx->Driver.BaseCompressedTexFormat) { GLint ifmt = (*ctx->Driver.BaseCompressedTexFormat)(ctx, format); if (ifmt >= 0) { return ifmt; } } switch (format) { case GL_ALPHA: case GL_ALPHA4: case GL_ALPHA8: case GL_ALPHA12: case GL_ALPHA16: return GL_ALPHA; case 1: case GL_LUMINANCE: case GL_LUMINANCE4: case GL_LUMINANCE8: case GL_LUMINANCE12: case GL_LUMINANCE16: return GL_LUMINANCE; case 2: case GL_LUMINANCE_ALPHA: case GL_LUMINANCE4_ALPHA4: case GL_LUMINANCE6_ALPHA2: case GL_LUMINANCE8_ALPHA8: case GL_LUMINANCE12_ALPHA4: case GL_LUMINANCE12_ALPHA12: case GL_LUMINANCE16_ALPHA16: return GL_LUMINANCE_ALPHA; case GL_INTENSITY: case GL_INTENSITY4: case GL_INTENSITY8: case GL_INTENSITY12: case GL_INTENSITY16: return GL_INTENSITY; case 3: case GL_RGB: case GL_R3_G3_B2: case GL_RGB4: case GL_RGB5: case GL_RGB8: case GL_RGB10: case GL_RGB12: case GL_RGB16: return GL_RGB; case 4: case GL_RGBA: case GL_RGBA2: case GL_RGBA4: case GL_RGB5_A1: case GL_RGBA8: case GL_RGB10_A2: case GL_RGBA12: case GL_RGBA16: return GL_RGBA; case GL_COLOR_INDEX: case GL_COLOR_INDEX1_EXT: case GL_COLOR_INDEX2_EXT: case GL_COLOR_INDEX4_EXT: case GL_COLOR_INDEX8_EXT: case GL_COLOR_INDEX12_EXT: case GL_COLOR_INDEX16_EXT: return GL_COLOR_INDEX; default: return -1; /* error */ } } /* * Given an internal texture format enum or 1, 2, 3, 4 return the * corresponding _base_ internal format: GL_ALPHA, GL_LUMINANCE, * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA. Return the * number of components for the format. Return -1 if invalid enum. */ static GLint components_in_intformat( GLint format ) { switch (format) { case GL_ALPHA: case GL_ALPHA4: case GL_ALPHA8: case GL_ALPHA12: case GL_ALPHA16: return 1; case 1: case GL_LUMINANCE: case GL_LUMINANCE4: case GL_LUMINANCE8: case GL_LUMINANCE12: case GL_LUMINANCE16: return 1; case 2: case GL_LUMINANCE_ALPHA: case GL_LUMINANCE4_ALPHA4: case GL_LUMINANCE6_ALPHA2: case GL_LUMINANCE8_ALPHA8: case GL_LUMINANCE12_ALPHA4: case GL_LUMINANCE12_ALPHA12: case GL_LUMINANCE16_ALPHA16: return 2; case GL_INTENSITY: case GL_INTENSITY4: case GL_INTENSITY8: case GL_INTENSITY12: case GL_INTENSITY16: return 1; case 3: case GL_RGB: case GL_R3_G3_B2: case GL_RGB4: case GL_RGB5: case GL_RGB8: case GL_RGB10: case GL_RGB12: case GL_RGB16: return 3; case 4: case GL_RGBA: case GL_RGBA2: case GL_RGBA4: case GL_RGB5_A1: case GL_RGBA8: case GL_RGB10_A2: case GL_RGBA12: case GL_RGBA16: return 4; case GL_COLOR_INDEX: case GL_COLOR_INDEX1_EXT: case GL_COLOR_INDEX2_EXT: case GL_COLOR_INDEX4_EXT: case GL_COLOR_INDEX8_EXT: case GL_COLOR_INDEX12_EXT: case GL_COLOR_INDEX16_EXT: return 1; default: return -1; /* error */ } } /* * Return GL_TRUE if internalFormat is a compressed format, return GL_FALSE * otherwise. */ static GLboolean is_compressed_format(GLcontext *ctx, GLenum internalFormat) { if (ctx->Driver.IsCompressedFormat) { return (*ctx->Driver.IsCompressedFormat)(ctx, internalFormat); } return GL_FALSE; } static void set_tex_image(struct gl_texture_object *tObj, GLenum target, GLint level, struct gl_texture_image *texImage) { ASSERT(tObj); ASSERT(texImage); switch (target) { case GL_TEXTURE_2D: tObj->Image[level] = texImage; return; case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: tObj->Image[level] = texImage; return; case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: tObj->NegX[level] = texImage; return; case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: tObj->PosY[level] = texImage; return; case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: tObj->NegY[level] = texImage; return; case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: tObj->PosZ[level] = texImage; return; case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: tObj->NegZ[level] = texImage; return; default: gl_problem(NULL, "bad target in set_tex_image()"); return; } } /* * Return new gl_texture_image struct with all fields initialized to zero. */ struct gl_texture_image * _mesa_alloc_texture_image( void ) { return CALLOC_STRUCT(gl_texture_image); } /* * Initialize most fields of a gl_texture_image struct. */ static void init_texture_image( GLcontext *ctx, struct gl_texture_image *img, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum internalFormat ) { ASSERT(img); ASSERT(!img->Data); _mesa_init_texture_format( ctx, img, internalFormat ); img->Border = border; img->Width = width; img->Height = height; img->Depth = depth; img->WidthLog2 = logbase2(width - 2 * border); if (height == 1) /* 1-D texture */ img->HeightLog2 = 0; else img->HeightLog2 = logbase2(height - 2 * border); if (depth == 1) /* 2-D texture */ img->DepthLog2 = 0; else img->DepthLog2 = logbase2(depth - 2 * border); img->Width2 = 1 << img->WidthLog2; img->Height2 = 1 << img->HeightLog2; img->Depth2 = 1 << img->DepthLog2; img->MaxLog2 = MAX2(img->WidthLog2, img->HeightLog2); img->IsCompressed = is_compressed_format(ctx, internalFormat); } void _mesa_free_texture_image( struct gl_texture_image *teximage ) { if (teximage->Data) { FREE( teximage->Data ); teximage->Data = NULL; } FREE( teximage ); } /* * Return number of bytes of storage needed to store a compressed texture * image. Only the driver knows for sure. If the driver can't help us, * we must return 0. */ GLuint _mesa_compressed_image_size(GLcontext *ctx, GLenum internalFormat, GLint numDimensions, GLint width, GLint height, GLint depth) { if (ctx->Driver.CompressedImageSize) { return (*ctx->Driver.CompressedImageSize)(ctx, internalFormat, numDimensions, width, height, depth); } else { /* Shouldn't this be an internal error of some sort? */ return 0; } } /* * Given a texture unit and a texture target, return the corresponding * texture object. */ struct gl_texture_object * _mesa_select_tex_object(GLcontext *ctx, struct gl_texture_unit *texUnit, GLenum target) { switch (target) { case GL_TEXTURE_1D: return texUnit->CurrentD[1]; case GL_PROXY_TEXTURE_1D: return ctx->Texture.Proxy1D; case GL_TEXTURE_2D: return texUnit->CurrentD[2]; case GL_PROXY_TEXTURE_2D: return ctx->Texture.Proxy2D; case GL_TEXTURE_3D: return texUnit->CurrentD[3]; case GL_PROXY_TEXTURE_3D: return ctx->Texture.Proxy3D; case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: case GL_TEXTURE_CUBE_MAP_ARB: return ctx->Extensions.HaveTextureCubeMap ? texUnit->CurrentCubeMap : NULL; case GL_PROXY_TEXTURE_CUBE_MAP_ARB: return ctx->Extensions.HaveTextureCubeMap ? ctx->Texture.ProxyCubeMap : NULL; default: gl_problem(NULL, "bad target in _mesa_select_tex_object()"); return NULL; } } /* * Return the texture image struct which corresponds to target and level * for the given texture unit. */ struct gl_texture_image * _mesa_select_tex_image(GLcontext *ctx, const struct gl_texture_unit *texUnit, GLenum target, GLint level) { ASSERT(texUnit); switch (target) { case GL_TEXTURE_1D: return texUnit->CurrentD[1]->Image[level]; case GL_PROXY_TEXTURE_1D: return ctx->Texture.Proxy1D->Image[level]; case GL_TEXTURE_2D: return texUnit->CurrentD[2]->Image[level]; case GL_PROXY_TEXTURE_2D: return ctx->Texture.Proxy2D->Image[level]; case GL_TEXTURE_3D: return texUnit->CurrentD[3]->Image[level]; case GL_PROXY_TEXTURE_3D: return ctx->Texture.Proxy3D->Image[level]; case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: if (ctx->Extensions.HaveTextureCubeMap) return texUnit->CurrentCubeMap->Image[level]; else return NULL; case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: if (ctx->Extensions.HaveTextureCubeMap) return texUnit->CurrentCubeMap->NegX[level]; else return NULL; case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: if (ctx->Extensions.HaveTextureCubeMap) return texUnit->CurrentCubeMap->PosY[level]; else return NULL; case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: if (ctx->Extensions.HaveTextureCubeMap) return texUnit->CurrentCubeMap->NegY[level]; else return NULL; case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: if (ctx->Extensions.HaveTextureCubeMap) return texUnit->CurrentCubeMap->PosZ[level]; else return NULL; case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: if (ctx->Extensions.HaveTextureCubeMap) return texUnit->CurrentCubeMap->NegZ[level]; else return NULL; case GL_PROXY_TEXTURE_CUBE_MAP_ARB: if (ctx->Extensions.HaveTextureCubeMap) return ctx->Texture.ProxyCubeMap->Image[level]; else return NULL; default: gl_problem(ctx, "bad target in _mesa_select_tex_image()"); return NULL; } } /* Need this to prevent an out-of-bounds memory access when using * X86 optimized code. */ #ifdef USE_X86_ASM # define EXTRA_BYTE 1 #else # define EXTRA_BYTE 0 #endif /* * Called by glTexImage[123]D. Fill in a texture image with data given * by the client. All pixel transfer and unpack modes are handled here. * NOTE: All texture image parameters should have already been error checked. */ static void make_texture_image( GLcontext *ctx, struct gl_texture_image *texImage, GLenum srcFormat, GLenum srcType, const GLvoid *pixels, const struct gl_pixelstore_attrib *unpacking) { GLint components, numPixels; GLint internalFormat, width, height, depth, border; ASSERT(ctx); ASSERT(texImage); ASSERT(!texImage->Data); ASSERT(pixels); ASSERT(unpacking); internalFormat = texImage->IntFormat; width = texImage->Width; height = texImage->Height; depth = texImage->Depth; border = texImage->Border; components = components_in_intformat(internalFormat); ASSERT(width > 0); ASSERT(height > 0); ASSERT(depth > 0); ASSERT(border == 0 || border == 1); ASSERT(pixels); ASSERT(unpacking); ASSERT(components); numPixels = width * height * depth; texImage->Data = (GLubyte *) MALLOC(numPixels * components + EXTRA_BYTE); if (!texImage->Data) return; /* out of memory */ /* * OK, the texture image struct has been initialized and the texture * image memory has been allocated. * Now fill in the texture image from the source data. * This includes applying the pixel transfer operations. */ /* try common 2D texture cases first */ if (!ctx->Pixel.ScaleOrBiasRGBA && !ctx->Pixel.MapColorFlag && !ctx->Pixel.IndexOffset && !ctx->Pixel.IndexShift && srcType == GL_UNSIGNED_BYTE && depth == 1) { if ((GLint) srcFormat == internalFormat || (srcFormat == GL_LUMINANCE && internalFormat == 1) || (srcFormat == GL_LUMINANCE_ALPHA && internalFormat == 2) || (srcFormat == GL_RGB && internalFormat == 3) || (srcFormat == GL_RGBA && internalFormat == 4)) { /* This will cover the common GL_RGB, GL_RGBA, GL_ALPHA, * GL_LUMINANCE_ALPHA, etc. texture formats. */ const GLubyte *src = (const GLubyte *) _mesa_image_address( unpacking, pixels, width, height, srcFormat, srcType, 0, 0, 0); const GLint srcStride = _mesa_image_row_stride(unpacking, width, srcFormat, srcType); GLubyte *dst = texImage->Data; GLint dstBytesPerRow = width * components * sizeof(GLubyte); if (srcStride == dstBytesPerRow) { MEMCPY(dst, src, height * dstBytesPerRow); } else { GLint i; for (i = 0; i < height; i++) { MEMCPY(dst, src, dstBytesPerRow); src += srcStride; dst += dstBytesPerRow; } } return; /* all done */ } else if (srcFormat == GL_RGBA && internalFormat == GL_RGB) { /* commonly used by Quake */ const GLubyte *src = (const GLubyte *) _mesa_image_address( unpacking, pixels, width, height, srcFormat, srcType, 0, 0, 0); const GLint srcStride = _mesa_image_row_stride(unpacking, width, srcFormat, srcType); GLubyte *dst = texImage->Data; GLint i, j; for (i = 0; i < height; i++) { const GLubyte *s = src; for (j = 0; j < width; j++) { *dst++ = *s++; /*red*/ *dst++ = *s++; /*green*/ *dst++ = *s++; /*blue*/ s++; /*alpha*/ } src += srcStride; } return; /* all done */ } } /* * General case solutions */ if (texImage->Format == GL_COLOR_INDEX) { /* color index texture */ const GLint destBytesPerRow = width * components * sizeof(GLubyte); const GLenum dstType = GL_UNSIGNED_BYTE; GLubyte *dest = texImage->Data; GLint img, row; for (img = 0; img < depth; img++) { for (row = 0; row < height; row++) { const GLvoid *source = _mesa_image_address(unpacking, pixels, width, height, srcFormat, srcType, img, row, 0); _mesa_unpack_index_span(ctx, width, dstType, dest, srcType, source, unpacking, GL_TRUE); dest += destBytesPerRow; } } } else { /* regular, color texture */ const GLint destBytesPerRow = width * components * sizeof(GLubyte); const GLenum dstFormat = texImage->Format; GLubyte *dest = texImage->Data; GLint img, row; for (img = 0; img < depth; img++) { for (row = 0; row < height; row++) { const GLvoid *source = _mesa_image_address(unpacking, pixels, width, height, srcFormat, srcType, img, row, 0); _mesa_unpack_ubyte_color_span(ctx, width, dstFormat, dest, srcFormat, srcType, source, unpacking, GL_TRUE); dest += destBytesPerRow; } } } } /* * glTexImage[123]D can accept a NULL image pointer. In this case we * create a texture image with unspecified image contents per the OpenGL * spec. This function creates an empty image for the given texture image. */ static void make_null_texture( struct gl_texture_image *texImage ) { GLint components; GLint numPixels; ASSERT(texImage); ASSERT(!texImage->Data); components = components_in_intformat(texImage->IntFormat); numPixels = texImage->Width * texImage->Height * texImage->Depth; texImage->Data = (GLubyte *) MALLOC( numPixels * components + EXTRA_BYTE ); /* * Let's see if anyone finds this. If glTexImage2D() is called with * a NULL image pointer then load the texture image with something * interesting instead of leaving it indeterminate. */ if (texImage->Data) { static const char message[8][32] = { " X X XXXXX XXX X ", " XX XX X X X X X ", " X X X X X X X ", " X X XXXX XXX XXXXX ", " X X X X X X ", " X X X X X X X ", " X X XXXXX XXX X X ", " " }; GLubyte *imgPtr = texImage->Data; GLuint i, j; GLint k; for (i = 0; i < texImage->Height; i++) { GLint srcRow = 7 - i % 8; for (j = 0; j < texImage->Width; j++) { GLint srcCol = j % 32; GLint texel = (message[srcRow][srcCol]=='X') ? 255 : 70; for (k = 0; k < components; k++) { *imgPtr++ = (GLubyte) texel; } } } } } /* * This is called when a proxy texture test fails, we set all the * image members (except DriverData) to zero. */ static void clear_proxy_teximage(struct gl_texture_image *img) { ASSERT(img); img->Format = 0; img->IntFormat = 0; img->Border = 0; img->Width = 0; img->Height = 0; img->Depth = 0; img->Width2 = 0; img->Height2 = 0; img->Depth2 = 0; img->WidthLog2 = 0; img->HeightLog2 = 0; img->DepthLog2 = 0; img->Data = NULL; img->IsCompressed = 0; img->CompressedSize = 0; img->TexFormat = &_mesa_null_texformat; } /* * Test glTexImage[123]D() parameters for errors. * Input: * dimensions - must be 1 or 2 or 3 * Return: GL_TRUE = an error was detected, GL_FALSE = no errors */ static GLboolean texture_error_check( GLcontext *ctx, GLenum target, GLint level, GLint internalFormat, GLenum format, GLenum type, GLuint dimensions, GLint width, GLint height, GLint depth, GLint border ) { GLboolean isProxy; GLint iformat; if (dimensions == 1) { isProxy = (GLboolean) (target == GL_PROXY_TEXTURE_1D); if (target != GL_TEXTURE_1D && !isProxy) { gl_error( ctx, GL_INVALID_ENUM, "glTexImage1D(target)" ); return GL_TRUE; } } else if (dimensions == 2) { isProxy = (GLboolean) (target == GL_PROXY_TEXTURE_2D); if (target != GL_TEXTURE_2D && !isProxy && !(ctx->Extensions.HaveTextureCubeMap && target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB)) { gl_error( ctx, GL_INVALID_ENUM, "glTexImage2D(target)" ); return GL_TRUE; } } else if (dimensions == 3) { isProxy = (GLboolean) (target == GL_PROXY_TEXTURE_3D); if (target != GL_TEXTURE_3D && !isProxy) { gl_error( ctx, GL_INVALID_ENUM, "glTexImage3D(target)" ); return GL_TRUE; } } else { gl_problem( ctx, "bad dims in texture_error_check" ); return GL_TRUE; } /* Border */ if (border != 0 && border != 1) { if (!isProxy) { char message[100]; sprintf(message, "glTexImage%dD(border)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); } return GL_TRUE; } /* Width */ if (width < 2 * border || width > 2 + ctx->Const.MaxTextureSize || logbase2( width - 2 * border ) < 0) { if (!isProxy) { char message[100]; sprintf(message, "glTexImage%dD(width)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); } return GL_TRUE; } /* Height */ if (dimensions >= 2) { if (height < 2 * border || height > 2 + ctx->Const.MaxTextureSize || logbase2( height - 2 * border ) < 0) { if (!isProxy) { char message[100]; sprintf(message, "glTexImage%dD(height)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); } return GL_TRUE; } } /* For cube map, width must equal height */ if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) { if (width != height) { if (!isProxy) { gl_error(ctx, GL_INVALID_VALUE, "glTexImage2D(width != height)"); } return GL_TRUE; } } /* Depth */ if (dimensions >= 3) { if (depth < 2 * border || depth > 2 + ctx->Const.MaxTextureSize || logbase2( depth - 2 * border ) < 0) { if (!isProxy) { gl_error( ctx, GL_INVALID_VALUE, "glTexImage3D(depth)" ); } return GL_TRUE; } } /* Level */ if (level < 0 || level >= ctx->Const.MaxTextureLevels) { if (!isProxy) { char message[100]; sprintf(message, "glTexImage%dD(level)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); } return GL_TRUE; } iformat = _mesa_base_tex_format( ctx, internalFormat ); if (iformat < 0) { if (!isProxy) { char message[100]; sprintf(message, "glTexImage%dD(internalFormat)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); } return GL_TRUE; } if (!is_compressed_format(ctx, internalFormat)) { if (!_mesa_is_legal_format_and_type( format, type )) { /* Yes, generate GL_INVALID_OPERATION, not GL_INVALID_ENUM, if there * is a type/format mismatch. See 1.2 spec page 94, sec 3.6.4. */ if (!isProxy) { char message[100]; sprintf(message, "glTexImage%dD(format or type)", dimensions); gl_error(ctx, GL_INVALID_OPERATION, message); } return GL_TRUE; } } /* if we get here, the parameters are OK */ return GL_FALSE; } /* * Test glTexSubImage[123]D() parameters for errors. * Input: * dimensions - must be 1 or 2 or 3 * Return: GL_TRUE = an error was detected, GL_FALSE = no errors */ static GLboolean subtexture_error_check( GLcontext *ctx, GLuint dimensions, GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint width, GLint height, GLint depth, GLenum format, GLenum type ) { struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; struct gl_texture_image *destTex; if (dimensions == 1) { if (target != GL_TEXTURE_1D) { gl_error( ctx, GL_INVALID_ENUM, "glTexSubImage1D(target)" ); return GL_TRUE; } } else if (dimensions == 2) { if (ctx->Extensions.HaveTextureCubeMap) { if ((target < GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB || target > GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) && target != GL_TEXTURE_2D) { gl_error( ctx, GL_INVALID_ENUM, "glTexSubImage2D(target)" ); return GL_TRUE; } } else if (target != GL_TEXTURE_2D) { gl_error( ctx, GL_INVALID_ENUM, "glTexSubImage2D(target)" ); return GL_TRUE; } } else if (dimensions == 3) { if (target != GL_TEXTURE_3D) { gl_error( ctx, GL_INVALID_ENUM, "glTexSubImage3D(target)" ); return GL_TRUE; } } else { gl_problem( ctx, "bad dims in texture_error_check" ); return GL_TRUE; } if (level < 0 || level >= ctx->Const.MaxTextureLevels) { gl_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level)"); return GL_TRUE; } if (width < 0) { char message[100]; sprintf(message, "glTexSubImage%dD(width)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } if (height < 0 && dimensions > 1) { char message[100]; sprintf(message, "glTexSubImage%dD(height)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } if (depth < 0 && dimensions > 2) { char message[100]; sprintf(message, "glTexSubImage%dD(depth)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } destTex = texUnit->CurrentD[dimensions]->Image[level]; if (!destTex) { gl_error(ctx, GL_INVALID_OPERATION, "glTexSubImage1/2/3D"); return GL_TRUE; } if (xoffset < -((GLint)destTex->Border)) { gl_error(ctx, GL_INVALID_VALUE, "glTexSubImage1/2/3D(xoffset)"); return GL_TRUE; } if (xoffset + width > (GLint) (destTex->Width + destTex->Border)) { gl_error(ctx, GL_INVALID_VALUE, "glTexSubImage1/2/3D(xoffset+width)"); return GL_TRUE; } if (dimensions > 1) { if (yoffset < -((GLint)destTex->Border)) { gl_error(ctx, GL_INVALID_VALUE, "glTexSubImage2/3D(yoffset)"); return GL_TRUE; } if (yoffset + height > (GLint) (destTex->Height + destTex->Border)) { gl_error(ctx, GL_INVALID_VALUE, "glTexSubImage2/3D(yoffset+height)"); return GL_TRUE; } } if (dimensions > 2) { if (zoffset < -((GLint)destTex->Border)) { gl_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset)"); return GL_TRUE; } if (zoffset + depth > (GLint) (destTex->Depth+destTex->Border)) { gl_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset+depth)"); return GL_TRUE; } } if (!is_compressed_format(ctx, destTex->IntFormat)) { if (!_mesa_is_legal_format_and_type(format, type)) { char message[100]; sprintf(message, "glTexSubImage%dD(format or type)", dimensions); gl_error(ctx, GL_INVALID_ENUM, message); return GL_TRUE; } } return GL_FALSE; } /* * Test glCopyTexImage[12]D() parameters for errors. * Input: dimensions - must be 1 or 2 or 3 * Return: GL_TRUE = an error was detected, GL_FALSE = no errors */ static GLboolean copytexture_error_check( GLcontext *ctx, GLuint dimensions, GLenum target, GLint level, GLint internalFormat, GLint width, GLint height, GLint border ) { GLint iformat; if (dimensions == 1) { if (target != GL_TEXTURE_1D) { gl_error( ctx, GL_INVALID_ENUM, "glCopyTexImage1D(target)" ); return GL_TRUE; } } else if (dimensions == 2) { if (ctx->Extensions.HaveTextureCubeMap) { if ((target < GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB || target > GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) && target != GL_TEXTURE_2D) { gl_error( ctx, GL_INVALID_ENUM, "glCopyTexImage2D(target)" ); return GL_TRUE; } } else if (target != GL_TEXTURE_2D) { gl_error( ctx, GL_INVALID_ENUM, "glCopyTexImage2D(target)" ); return GL_TRUE; } } /* Border */ if (border!=0 && border!=1) { char message[100]; sprintf(message, "glCopyTexImage%dD(border)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } /* Width */ if (width < 2 * border || width > 2 + ctx->Const.MaxTextureSize || logbase2( width - 2 * border ) < 0) { char message[100]; sprintf(message, "glCopyTexImage%dD(width)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } /* Height */ if (dimensions >= 2) { if (height < 2 * border || height > 2 + ctx->Const.MaxTextureSize || logbase2( height - 2 * border ) < 0) { char message[100]; sprintf(message, "glCopyTexImage%dD(height)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } } /* For cube map, width must equal height */ if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) { if (width != height) { gl_error(ctx, GL_INVALID_VALUE, "glCopyTexImage2D(width != height)"); return GL_TRUE; } } /* Level */ if (level<0 || level>=ctx->Const.MaxTextureLevels) { char message[100]; sprintf(message, "glCopyTexImage%dD(level)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } iformat = _mesa_base_tex_format( ctx, internalFormat ); if (iformat < 0) { char message[100]; sprintf(message, "glCopyTexImage%dD(internalFormat)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } /* if we get here, the parameters are OK */ return GL_FALSE; } static GLboolean copytexsubimage_error_check( GLcontext *ctx, GLuint dimensions, GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height ) { struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; struct gl_texture_image *teximage; if (dimensions == 1) { if (target != GL_TEXTURE_1D) { gl_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage1D(target)" ); return GL_TRUE; } } else if (dimensions == 2) { if (ctx->Extensions.HaveTextureCubeMap) { if ((target < GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB || target > GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB) && target != GL_TEXTURE_2D) { gl_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage2D(target)" ); return GL_TRUE; } } else if (target != GL_TEXTURE_2D) { gl_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage2D(target)" ); return GL_TRUE; } } else if (dimensions == 3) { if (target != GL_TEXTURE_3D) { gl_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage3D(target)" ); return GL_TRUE; } } if (level < 0 || level >= ctx->Const.MaxTextureLevels) { char message[100]; sprintf(message, "glCopyTexSubImage%dD(level)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } if (width < 0) { char message[100]; sprintf(message, "glCopyTexSubImage%dD(width)", dimensions ); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } if (dimensions > 1 && height < 0) { char message[100]; sprintf(message, "glCopyTexSubImage%dD(height)", dimensions ); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } teximage = texUnit->CurrentD[dimensions]->Image[level]; if (!teximage) { char message[100]; sprintf(message, "glCopyTexSubImage%dD(undefined texture)", dimensions); gl_error(ctx, GL_INVALID_OPERATION, message); return GL_TRUE; } if (xoffset < -((GLint)teximage->Border)) { char message[100]; sprintf(message, "glCopyTexSubImage%dD(xoffset)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } if (xoffset+width > (GLint) (teximage->Width+teximage->Border)) { char message[100]; sprintf(message, "glCopyTexSubImage%dD(xoffset+width)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } if (dimensions > 1) { if (yoffset < -((GLint)teximage->Border)) { char message[100]; sprintf(message, "glCopyTexSubImage%dD(yoffset)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } /* NOTE: we're adding the border here, not subtracting! */ if (yoffset+height > (GLint) (teximage->Height+teximage->Border)) { char message[100]; sprintf(message, "glCopyTexSubImage%dD(yoffset+height)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } } if (dimensions > 2) { if (zoffset < -((GLint)teximage->Border)) { char message[100]; sprintf(message, "glCopyTexSubImage%dD(zoffset)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } if (zoffset > (GLint) (teximage->Depth+teximage->Border)) { char message[100]; sprintf(message, "glCopyTexSubImage%dD(zoffset+depth)", dimensions); gl_error(ctx, GL_INVALID_VALUE, message); return GL_TRUE; } } /* if we get here, the parameters are OK */ return GL_FALSE; } /* * Turn generic compressed formats into specific compressed format. * Some of the compressed formats we don't support, so we * fall back to the uncompressed format. (See issue 15 of * the GL_ARB_texture_compression specification.) */ static GLint get_specific_compressed_tex_format(GLcontext *ctx, GLint ifmt, GLint numDimensions, GLint *levelp, GLsizei *widthp, GLsizei *heightp, GLsizei *depthp, GLint *borderp, GLenum *formatp, GLenum *typep) { char message[100]; GLint internalFormat = ifmt; if (ctx->Extensions.HaveTextureCompression && ctx->Driver.SpecificCompressedTexFormat) { /* * First, ask the driver for the specific format. * We do this for all formats, since we may want to * fake one compressed format for another. */ internalFormat = (*ctx->Driver.SpecificCompressedTexFormat) (ctx, internalFormat, numDimensions, levelp, widthp, heightp, depthp, borderp, formatp, typep); } /* * Now, convert any generic format left to an uncompressed * specific format. If the driver does not support compression * of the format, we must drop back to the uncompressed format. * See issue 15 of the GL_ARB_texture_compression specification. */ switch (internalFormat) { case GL_COMPRESSED_ALPHA_ARB: if (ctx && !ctx->Extensions.HaveTextureCompression) { sprintf(message, "glTexImage%dD(internalFormat)", numDimensions); gl_error(ctx, GL_INVALID_VALUE, message); return -1; } internalFormat = GL_ALPHA; break; case GL_COMPRESSED_LUMINANCE_ARB: if (ctx && !ctx->Extensions.HaveTextureCompression) { sprintf(message, "glTexImage%dD(internalFormat)", numDimensions); gl_error(ctx, GL_INVALID_VALUE, message); return -1; } internalFormat = GL_LUMINANCE; break; case GL_COMPRESSED_LUMINANCE_ALPHA_ARB: if (ctx && !ctx->Extensions.HaveTextureCompression) { sprintf(message, "glTexImage%dD(internalFormat)", numDimensions); gl_error(ctx, GL_INVALID_VALUE, message); return -1; } internalFormat = GL_LUMINANCE_ALPHA; break; case GL_COMPRESSED_INTENSITY_ARB: if (ctx && !ctx->Extensions.HaveTextureCompression) { sprintf(message, "glTexImage%dD(internalFormat)", numDimensions); gl_error(ctx, GL_INVALID_VALUE, message); return -1; } internalFormat = GL_INTENSITY; break; case GL_COMPRESSED_RGB_ARB: if (ctx && !ctx->Extensions.HaveTextureCompression) { sprintf(message, "glTexImage%dD(internalFormat)", numDimensions); gl_error(ctx, GL_INVALID_VALUE, message); return -1; } internalFormat = GL_RGB; break; case GL_COMPRESSED_RGBA_ARB: if (ctx && !ctx->Extensions.HaveTextureCompression) { sprintf(message, "glTexImage%dD(internalFormat)", numDimensions); gl_error(ctx, GL_INVALID_VALUE, message); return -1; } internalFormat = GL_RGBA; break; default: /* silence compiler warning */ ; } return internalFormat; } /* * Called from the API. Note that width includes the border. */ void _mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels ) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage1D"); if (target==GL_TEXTURE_1D) { struct gl_texture_unit *texUnit; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLint ifmt; ifmt = get_specific_compressed_tex_format(ctx, internalFormat, 1, &level, &width, 0, 0, &border, &format, &type); if (ifmt < 0) { /* * The error here is that we were sent a generic compressed * format, but the extension is not supported. */ return; } else { internalFormat = ifmt; } if (texture_error_check(ctx, target, level, internalFormat, format, type, 1, width, 1, 1, border)) { return; /* error in texture image was detected */ } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; texObj = texUnit->CurrentD[1]; texImage = texObj->Image[level]; if (!texImage) { texImage = _mesa_alloc_texture_image(); texObj->Image[level] = texImage; if (!texImage) { gl_error(ctx, GL_OUT_OF_MEMORY, "glTexImage1D"); return; } } else if (texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } /* setup the teximage struct's fields */ init_texture_image(ctx, texImage, width, 1, 1, border, internalFormat); /* process the texture image */ if (pixels) { GLboolean retain = GL_TRUE; GLboolean success = GL_FALSE; if (!ctx->Pixel.MapColorFlag && !ctx->Pixel.ScaleOrBiasRGBA && ctx->Driver.TexImage1D) { /* let device driver try to use raw image */ success = (*ctx->Driver.TexImage1D)( ctx, target, level, format, type, pixels, &ctx->Unpack, texObj, texImage, &retain); } if (retain || !success) { /* make internal copy of the texture image */ make_texture_image(ctx, texImage, format, type, pixels, &ctx->Unpack); if (!success && ctx->Driver.TexImage1D) { /* let device driver try to use unpacked image */ (*ctx->Driver.TexImage1D)( ctx, target, level, texImage->Format, GL_UNSIGNED_BYTE, texImage->Data, &_mesa_native_packing, texObj, texImage, &retain); } } if (!retain && texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } } else { make_null_texture(texImage); if (ctx->Driver.TexImage1D) { GLboolean retain; (*ctx->Driver.TexImage1D)( ctx, target, level, texImage->Format, GL_UNSIGNED_BYTE, texImage->Data, &_mesa_native_packing, texObj, texImage, &retain); } } /* state update */ gl_put_texobj_on_dirty_list( ctx, texObj ); ctx->NewState |= NEW_TEXTURING; } else if (target == GL_PROXY_TEXTURE_1D) { /* Proxy texture: check for errors and update proxy state */ GLenum error = texture_error_check(ctx, target, level, internalFormat, format, type, 1, width, 1, 1, border); if (!error && ctx->Driver.TestProxyTexImage) { error = !(*ctx->Driver.TestProxyTexImage)(ctx, target, level, internalFormat, format, type, width, 1, 1, border); } if (error) { /* if error, clear all proxy texture image parameters */ if (level>=0 && levelConst.MaxTextureLevels) { clear_proxy_teximage(ctx->Texture.Proxy1D->Image[level]); } } else { /* if no error, update proxy texture image parameters */ init_texture_image(ctx, ctx->Texture.Proxy1D->Image[level], width, 1, 1, border, internalFormat); } } else { gl_error( ctx, GL_INVALID_ENUM, "glTexImage1D(target)" ); return; } } void _mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels ) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage2D"); if (target==GL_TEXTURE_2D || (ctx->Extensions.HaveTextureCubeMap && target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB)) { struct gl_texture_unit *texUnit; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLint ifmt; ifmt = get_specific_compressed_tex_format(ctx, internalFormat, 2, &level, &width, &height, 0, &border, &format, &type); if (ifmt < 0) { /* * The error here is that we were sent a generic compressed * format, but the extension is not supported. */ return; } else { internalFormat = ifmt; } if (texture_error_check(ctx, target, level, internalFormat, format, type, 2, width, height, 1, border)) { return; /* error in texture image was detected */ } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; texObj = _mesa_select_tex_object(ctx, texUnit, target); texImage = _mesa_select_tex_image(ctx, texUnit, target, level); if (!texImage) { texImage = _mesa_alloc_texture_image(); set_tex_image(texObj, target, level, texImage); /*texObj->Image[level] = texImage;*/ if (!texImage) { gl_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D"); return; } } else if (texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } /* setup the teximage struct's fields */ init_texture_image(ctx, texImage, width, height, 1, border, internalFormat); /* process the texture image */ if (pixels) { GLboolean retain = GL_TRUE; GLboolean success = GL_FALSE; if (!ctx->Pixel.MapColorFlag && !ctx->Pixel.ScaleOrBiasRGBA && ctx->Driver.TexImage2D) { /* let device driver try to use raw image */ success = (*ctx->Driver.TexImage2D)( ctx, target, level, format, type, pixels, &ctx->Unpack, texObj, texImage, &retain); } if (retain || !success) { /* make internal copy of the texture image */ make_texture_image(ctx, texImage, format, type, pixels, &ctx->Unpack); if (!success && ctx->Driver.TexImage2D) { /* let device driver try to use unpacked image */ (*ctx->Driver.TexImage2D)( ctx, target, level, texImage->Format, GL_UNSIGNED_BYTE, texImage->Data, &_mesa_native_packing, texObj, texImage, &retain); } } if (!retain && texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } } else { make_null_texture(texImage); if (ctx->Driver.TexImage2D) { GLboolean retain; (*ctx->Driver.TexImage2D)( ctx, target, level, texImage->Format, GL_UNSIGNED_BYTE, texImage->Data, &_mesa_native_packing, texObj, texImage, &retain); } } #define OLD_DD_TEXTURE #ifdef OLD_DD_TEXTURE /* XXX this will be removed in the future */ if (ctx->Driver.TexImage) { (*ctx->Driver.TexImage)( ctx, target, texObj, level, internalFormat, texImage ); } #endif /* state update */ gl_put_texobj_on_dirty_list( ctx, texObj ); ctx->NewState |= NEW_TEXTURING; } else if (target == GL_PROXY_TEXTURE_2D) { /* Proxy texture: check for errors and update proxy state */ GLenum error = texture_error_check(ctx, target, level, internalFormat, format, type, 2, width, height, 1, border); if (!error && ctx->Driver.TestProxyTexImage) { error = !(*ctx->Driver.TestProxyTexImage)(ctx, target, level, internalFormat, format, type, width, height, 1, border); } if (error) { /* if error, clear all proxy texture image parameters */ if (level>=0 && levelConst.MaxTextureLevels) { clear_proxy_teximage(ctx->Texture.Proxy2D->Image[level]); } } else { /* if no error, update proxy texture image parameters */ init_texture_image(ctx, ctx->Texture.Proxy2D->Image[level], width, height, 1, border, internalFormat); } } else { gl_error( ctx, GL_INVALID_ENUM, "glTexImage2D(target)" ); return; } } /* * Called by the API or display list executor. * Note that width and height include the border. */ void _mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels ) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage3D"); if (target==GL_TEXTURE_3D_EXT) { struct gl_texture_unit *texUnit; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLint ifmt; ifmt = get_specific_compressed_tex_format(ctx, internalFormat, 3, &level, &width, &height, &depth, &border, &format, &type); if (ifmt < 0) { /* * The error here is that we were sent a generic compressed * format, but the extension is not supported. */ return; } else { internalFormat = ifmt; } if (texture_error_check(ctx, target, level, internalFormat, format, type, 3, width, height, depth, border)) { return; /* error in texture image was detected */ } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; texObj = texUnit->CurrentD[3]; texImage = texObj->Image[level]; if (!texImage) { texImage = _mesa_alloc_texture_image(); texObj->Image[level] = texImage; if (!texImage) { gl_error(ctx, GL_OUT_OF_MEMORY, "glTexImage3D"); return; } } else if (texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } /* setup the teximage struct's fields */ init_texture_image(ctx, texImage, width, height, depth, border, internalFormat); /* process the texture image */ if (pixels) { GLboolean retain = GL_TRUE; GLboolean success = GL_FALSE; if (!ctx->Pixel.MapColorFlag && !ctx->Pixel.ScaleOrBiasRGBA && ctx->Driver.TexImage3D) { /* let device driver try to use raw image */ success = (*ctx->Driver.TexImage3D)( ctx, target, level, format, type, pixels, &ctx->Unpack, texObj, texImage, &retain); } if (retain || !success) { /* make internal copy of the texture image */ make_texture_image(ctx, texImage, format, type, pixels, &ctx->Unpack); if (!success && ctx->Driver.TexImage3D) { /* let device driver try to use unpacked image */ (*ctx->Driver.TexImage3D)( ctx, target, level, texImage->Format, GL_UNSIGNED_BYTE, texImage->Data, &_mesa_native_packing, texObj, texImage, &retain); } } if (!retain && texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } } else { make_null_texture(texImage); if (ctx->Driver.TexImage3D) { GLboolean retain; (*ctx->Driver.TexImage3D)( ctx, target, level, texImage->Format, GL_UNSIGNED_BYTE, texImage->Data, &_mesa_native_packing, texObj, texImage, &retain); } } /* state update */ gl_put_texobj_on_dirty_list( ctx, texObj ); ctx->NewState |= NEW_TEXTURING; } else if (target == GL_PROXY_TEXTURE_3D) { /* Proxy texture: check for errors and update proxy state */ GLenum error = texture_error_check(ctx, target, level, internalFormat, format, type, 3, width, height, depth, border); if (!error && ctx->Driver.TestProxyTexImage) { error = !(*ctx->Driver.TestProxyTexImage)(ctx, target, level, internalFormat, format, type, width, height, depth, border); } if (error) { /* if error, clear all proxy texture image parameters */ if (level>=0 && levelConst.MaxTextureLevels) { clear_proxy_teximage(ctx->Texture.Proxy3D->Image[level]); } } else { /* if no error, update proxy texture image parameters */ init_texture_image(ctx, ctx->Texture.Proxy3D->Image[level], width, height, depth, border, internalFormat); } } else { gl_error( ctx, GL_INVALID_ENUM, "glTexImage3D(target)" ); return; } } void _mesa_TexImage3DEXT( GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels ) { _mesa_TexImage3D(target, level, (GLint) internalFormat, width, height, depth, border, format, type, pixels); } /* * Fetch a texture image from the device driver. * Store the results in the given texture object at the given mipmap level. */ void _mesa_get_teximage_from_driver( GLcontext *ctx, GLenum target, GLint level, const struct gl_texture_object *texObj ) { GLvoid *image; GLenum imgFormat, imgType; GLboolean freeImage; struct gl_texture_image *texImage; GLint destComponents, numPixels, srcBytesPerTexel; if (!ctx->Driver.GetTexImage) return; image = (*ctx->Driver.GetTexImage)( ctx, target, level, texObj, &imgFormat, &imgType, &freeImage); if (!image) return; texImage = texObj->Image[level]; ASSERT(texImage); if (!texImage) return; destComponents = components_in_intformat(texImage->Format); assert(destComponents > 0); numPixels = texImage->Width * texImage->Height * texImage->Depth; assert(numPixels > 0); srcBytesPerTexel = _mesa_bytes_per_pixel(imgFormat, imgType); assert(srcBytesPerTexel > 0); if (!texImage->Data) { /* Allocate memory for the texture image data */ texImage->Data = (GLubyte *) MALLOC(numPixels * destComponents + EXTRA_BYTE); } if (imgFormat == texImage->Format && imgType == GL_UNSIGNED_BYTE) { /* We got lucky! The driver's format and type match Mesa's format. */ if (texImage->Data) { MEMCPY(texImage->Data, image, numPixels * destComponents); } } else { /* Convert the texture image from the driver's format to Mesa's * internal format. */ const GLint width = texImage->Width; const GLint height = texImage->Height; const GLint depth = texImage->Depth; const GLint destBytesPerRow = width * destComponents * sizeof(GLchan); const GLint srcBytesPerRow = width * srcBytesPerTexel; const GLenum dstType = GL_UNSIGNED_BYTE; const GLenum dstFormat = texImage->Format; const GLubyte *srcPtr = (const GLubyte *) image; GLubyte *destPtr = texImage->Data; if (texImage->Format == GL_COLOR_INDEX) { /* color index texture */ GLint img, row; assert(imgFormat == GL_COLOR_INDEX); for (img = 0; img < depth; img++) { for (row = 0; row < height; row++) { _mesa_unpack_index_span(ctx, width, dstType, destPtr, imgType, srcPtr, &_mesa_native_packing, GL_FALSE); destPtr += destBytesPerRow; srcPtr += srcBytesPerRow; } } } else { /* color texture */ GLint img, row; for (img = 0; img < depth; img++) { for (row = 0; row < height; row++) { _mesa_unpack_ubyte_color_span(ctx, width, dstFormat, destPtr, imgFormat, imgType, srcPtr, &_mesa_native_packing, GL_FALSE); destPtr += destBytesPerRow; srcPtr += srcBytesPerRow; } } } } if (freeImage) FREE(image); } /* * Get all the mipmap images for a texture object from the device driver. * Actually, only get mipmap images if we're using a mipmap filter. */ GLboolean _mesa_get_teximages_from_driver(GLcontext *ctx, struct gl_texture_object *texObj) { if (ctx->Driver.GetTexImage) { static const GLenum targets[] = { GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_CUBE_MAP_ARB }; GLboolean needLambda = (texObj->MinFilter != texObj->MagFilter); GLenum target = targets[texObj->Dimensions - 1]; if (needLambda) { GLint level; /* Get images for all mipmap levels. We might not need them * all but this is easier. We're on a (slow) software path * anyway. */ for (level = 0; level <= texObj->P; level++) { struct gl_texture_image *texImg = texObj->Image[level]; if (texImg && !texImg->Data) { _mesa_get_teximage_from_driver(ctx, target, level, texObj); if (!texImg->Data) return GL_FALSE; /* out of memory */ } } } else { GLint level = texObj->BaseLevel; struct gl_texture_image *texImg = texObj->Image[level]; if (texImg && !texImg->Data) { _mesa_get_teximage_from_driver(ctx, target, level, texObj); if (!texImg->Data) return GL_FALSE; /* out of memory */ } } return GL_TRUE; } return GL_FALSE; } void _mesa_GetTexImage( GLenum target, GLint level, GLenum format, GLenum type, GLvoid *pixels ) { const struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLboolean discardImage; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glGetTexImage"); if (level < 0 || level >= ctx->Const.MaxTextureLevels) { gl_error( ctx, GL_INVALID_VALUE, "glGetTexImage(level)" ); return; } if (_mesa_sizeof_type(type) <= 0) { gl_error( ctx, GL_INVALID_ENUM, "glGetTexImage(type)" ); return; } if (_mesa_components_in_format(format) <= 0) { gl_error( ctx, GL_INVALID_ENUM, "glGetTexImage(format)" ); return; } if (!pixels) return; switch (target) { case GL_TEXTURE_1D: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[1]; texImage = texObj->Image[level]; break; case GL_TEXTURE_2D: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[2]; texImage = texObj->Image[level]; break; case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap; texImage = texObj->Image[level]; break; case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap; texImage = texObj->NegX[level]; break; case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap; texImage = texObj->PosY[level]; break; case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap; texImage = texObj->NegY[level]; break; case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap; texImage = texObj->PosZ[level]; break; case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap; texImage = texObj->NegZ[level]; break; case GL_TEXTURE_3D: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[3]; texImage = texObj->Image[level]; break; default: gl_error( ctx, GL_INVALID_ENUM, "glGetTexImage(target)" ); return; } if (!texImage) { /* invalid mipmap level */ return; } if (!texImage->Data) { /* try to get the texture image from the device driver */ _mesa_get_teximage_from_driver(ctx, target, level, texObj); discardImage = GL_TRUE; } else { discardImage = GL_FALSE; } if (texImage->Data) { GLint width = texImage->Width; GLint height = texImage->Height; GLint row; for (row = 0; row < height; row++) { /* compute destination address in client memory */ GLvoid *dest = _mesa_image_address( &ctx->Unpack, pixels, width, height, format, type, 0, row, 0); assert(dest); if (texImage->Format == GL_RGBA) { const GLubyte *src = texImage->Data + row * width * 4 * sizeof(GLubyte); _mesa_pack_rgba_span( ctx, width, (CONST GLubyte (*)[4]) src, format, type, dest, &ctx->Pack, GL_TRUE ); } else { /* fetch RGBA row from texture image then pack it in client mem */ GLubyte rgba[MAX_WIDTH][4]; GLint i; const GLubyte *src; switch (texImage->Format) { case GL_ALPHA: src = texImage->Data + row * width * sizeof(GLubyte); for (i = 0; i < width; i++) { rgba[i][RCOMP] = 255; rgba[i][GCOMP] = 255; rgba[i][BCOMP] = 255; rgba[i][ACOMP] = src[i]; } break; case GL_LUMINANCE: src = texImage->Data + row * width * sizeof(GLubyte); for (i = 0; i < width; i++) { rgba[i][RCOMP] = src[i]; rgba[i][GCOMP] = src[i]; rgba[i][BCOMP] = src[i]; rgba[i][ACOMP] = 255; } break; case GL_LUMINANCE_ALPHA: src = texImage->Data + row * 2 * width * sizeof(GLubyte); for (i = 0; i < width; i++) { rgba[i][RCOMP] = src[i*2+0]; rgba[i][GCOMP] = src[i*2+0]; rgba[i][BCOMP] = src[i*2+0]; rgba[i][ACOMP] = src[i*2+1]; } break; case GL_INTENSITY: src = texImage->Data + row * width * sizeof(GLubyte); for (i = 0; i < width; i++) { rgba[i][RCOMP] = src[i]; rgba[i][GCOMP] = src[i]; rgba[i][BCOMP] = src[i]; rgba[i][ACOMP] = 255; } break; case GL_RGB: src = texImage->Data + row * 3 * width * sizeof(GLubyte); for (i = 0; i < width; i++) { rgba[i][RCOMP] = src[i*3+0]; rgba[i][GCOMP] = src[i*3+1]; rgba[i][BCOMP] = src[i*3+2]; rgba[i][ACOMP] = 255; } break; case GL_RGBA: /* this special case should have been handled above! */ gl_problem( ctx, "error 1 in gl_GetTexImage" ); break; case GL_COLOR_INDEX: gl_problem( ctx, "GL_COLOR_INDEX not implemented in gl_GetTexImage" ); break; default: gl_problem( ctx, "bad format in gl_GetTexImage" ); } _mesa_pack_rgba_span( ctx, width, (CONST GLubyte (*)[4])rgba, format, type, dest, &ctx->Pack, GL_TRUE ); } } /* if we got the teximage from the device driver we'll discard it now */ if (discardImage) { FREE(texImage->Data); texImage->Data = NULL; } } } void _mesa_TexSubImage1D( GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const GLvoid *pixels ) { struct gl_texture_unit *texUnit; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLboolean success = GL_FALSE; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexSubImage1D"); if (subtexture_error_check(ctx, 1, target, level, xoffset, 0, 0, width, 1, 1, format, type)) { return; /* error was detected */ } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; texObj = texUnit->CurrentD[1]; texImage = texObj->Image[level]; assert(texImage); if (width == 0 || !pixels) return; /* no-op, not an error */ if (!ctx->Pixel.MapColorFlag && !ctx->Pixel.ScaleOrBiasRGBA && ctx->Driver.TexSubImage1D) { success = (*ctx->Driver.TexSubImage1D)( ctx, target, level, xoffset, width, format, type, pixels, &ctx->Unpack, texObj, texImage ); } if (!success) { /* XXX if Driver.TexSubImage1D, unpack image and try again? */ const GLint texComponents = components_in_intformat(texImage->Format); const GLenum texFormat = texImage->Format; const GLint xoffsetb = xoffset + texImage->Border; GLboolean retain = GL_TRUE; if (!texImage->Data) { _mesa_get_teximage_from_driver( ctx, target, level, texObj ); if (!texImage->Data) { make_null_texture(texImage); } if (!texImage->Data) return; /* we're really out of luck! */ } if (texFormat == GL_COLOR_INDEX) { /* color index texture */ GLubyte *dst = texImage->Data + xoffsetb * texComponents; const GLvoid *src = _mesa_image_address(&ctx->Unpack, pixels, width, 1, format, type, 0, 0, 0); _mesa_unpack_index_span(ctx, width, GL_UNSIGNED_BYTE, dst, type, src, &ctx->Unpack, GL_TRUE); } else { /* color texture */ GLubyte *dst = texImage->Data + xoffsetb * texComponents; const GLvoid *src = _mesa_image_address(&ctx->Unpack, pixels, width, 1, format, type, 0, 0, 0); _mesa_unpack_ubyte_color_span(ctx, width, texFormat, dst, format, type, src, &ctx->Unpack, GL_TRUE); } if (ctx->Driver.TexImage1D) { (*ctx->Driver.TexImage1D)( ctx, target, level, texImage->Format, GL_UNSIGNED_BYTE, texImage->Data, &_mesa_native_packing, texObj, texImage, &retain ); } if (!retain && texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } } /*gl_put_texobj_on_dirty_list( ctx, texUnit->CurrentD[1] );*/ } void _mesa_TexSubImage2D( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels ) { struct gl_texture_unit *texUnit; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLboolean success = GL_FALSE; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexSubImage2D"); if (subtexture_error_check(ctx, 2, target, level, xoffset, yoffset, 0, width, height, 1, format, type)) { return; /* error was detected */ } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; texObj = _mesa_select_tex_object(ctx, texUnit, target); texImage = texObj->Image[level]; assert(texImage); if (width == 0 || height == 0 || !pixels) return; /* no-op, not an error */ if (!ctx->Pixel.MapColorFlag && !ctx->Pixel.ScaleOrBiasRGBA && ctx->Driver.TexSubImage2D) { success = (*ctx->Driver.TexSubImage2D)( ctx, target, level, xoffset, yoffset, width, height, format, type, pixels, &ctx->Unpack, texObj, texImage ); } if (!success) { /* XXX if Driver.TexSubImage2D, unpack image and try again? */ const GLint texComponents = components_in_intformat(texImage->Format); const GLenum texFormat = texImage->Format; const GLint xoffsetb = xoffset + texImage->Border; const GLint yoffsetb = yoffset + texImage->Border; const GLint srcStride = _mesa_image_row_stride(&ctx->Unpack, width, format, type); const GLint dstStride = texImage->Width * texComponents *sizeof(GLubyte); GLboolean retain = GL_TRUE; if (!texImage->Data) { _mesa_get_teximage_from_driver( ctx, target, level, texObj ); if (!texImage->Data) { make_null_texture(texImage); } if (!texImage->Data) return; /* we're really out of luck! */ } if (texFormat == GL_COLOR_INDEX) { /* color index texture */ GLubyte *dst = texImage->Data + (yoffsetb * texImage->Width + xoffsetb) * texComponents; const GLubyte *src = (const GLubyte *) _mesa_image_address(&ctx->Unpack, pixels, width, height, format, type, 0, 0, 0); GLint row; for (row = 0; row < height; row++) { _mesa_unpack_index_span(ctx, width, GL_UNSIGNED_BYTE, dst, type, (const GLvoid *) src, &ctx->Unpack, GL_TRUE); src += srcStride; dst += dstStride; } } else { /* color texture */ GLubyte *dst = texImage->Data + (yoffsetb * texImage->Width + xoffsetb) * texComponents; const GLubyte *src = (const GLubyte *) _mesa_image_address(&ctx->Unpack, pixels, width, height, format, type, 0, 0, 0); GLint row; for (row = 0; row < height; row++) { _mesa_unpack_ubyte_color_span(ctx, width, texFormat, dst, format, type, (const GLvoid *) src, &ctx->Unpack, GL_TRUE); src += srcStride; dst += dstStride; } } if (ctx->Driver.TexImage2D) { (*ctx->Driver.TexImage2D)(ctx, target, level, texImage->Format, GL_UNSIGNED_BYTE, texImage->Data, &_mesa_native_packing, texObj, texImage, &retain); } if (!retain && texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } #ifdef OLD_DD_TEXTURE /* XXX this will be removed in the future */ if (ctx->Driver.TexSubImage) { (*ctx->Driver.TexSubImage)(ctx, target, texObj, level, xoffset, yoffset, width, height, texImage->IntFormat, texImage); } else if (ctx->Driver.TexImage) { (*ctx->Driver.TexImage)(ctx, GL_TEXTURE_2D, texObj, level, texImage->IntFormat, texImage ); } #endif } } void _mesa_TexSubImage3D( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *pixels ) { struct gl_texture_unit *texUnit; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLboolean success = GL_FALSE; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexSubImage3D"); if (subtexture_error_check(ctx, 3, target, level, xoffset, yoffset, zoffset, width, height, depth, format, type)) { return; /* error was detected */ } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; texObj = texUnit->CurrentD[3]; texImage = texObj->Image[level]; assert(texImage); if (width == 0 || height == 0 || height == 0 || !pixels) return; /* no-op, not an error */ if (!ctx->Pixel.MapColorFlag && !ctx->Pixel.ScaleOrBiasRGBA && ctx->Driver.TexSubImage3D) { success = (*ctx->Driver.TexSubImage3D)( ctx, target, level, xoffset, yoffset, zoffset, width, height, depth, format, type, pixels, &ctx->Unpack, texObj, texImage ); } if (!success) { /* XXX if Driver.TexSubImage3D, unpack image and try again? */ const GLint texComponents = components_in_intformat(texImage->Format); const GLenum texFormat = texImage->Format; const GLint xoffsetb = xoffset + texImage->Border; const GLint yoffsetb = yoffset + texImage->Border; const GLint zoffsetb = zoffset + texImage->Border; const GLint texWidth = texImage->Width; const GLint dstRectArea = texWidth * texImage->Height; const GLint srcStride = _mesa_image_row_stride(&ctx->Unpack, width, format, type); const GLint dstStride = texWidth * texComponents * sizeof(GLubyte); GLboolean retain = GL_TRUE; if (texFormat == GL_COLOR_INDEX) { /* color index texture */ GLint img, row; for (img = 0; img < depth; img++) { const GLubyte *src = (const GLubyte *) _mesa_image_address(&ctx->Unpack, pixels, width, height, format, type, img, 0, 0); GLubyte *dst = texImage->Data + ((zoffsetb + img) * dstRectArea + yoffsetb * texWidth + xoffsetb) * texComponents; for (row = 0; row < height; row++) { _mesa_unpack_index_span(ctx, width, GL_UNSIGNED_BYTE, dst, type, (const GLvoid *) src, &ctx->Unpack, GL_TRUE); src += srcStride; dst += dstStride; } } } else { /* color texture */ GLint img, row; for (img = 0; img < depth; img++) { const GLubyte *src = (const GLubyte *) _mesa_image_address(&ctx->Unpack, pixels, width, height, format, type, img, 0, 0); GLubyte *dst = texImage->Data + ((zoffsetb + img) * dstRectArea + yoffsetb * texWidth + xoffsetb) * texComponents; for (row = 0; row < height; row++) { _mesa_unpack_ubyte_color_span(ctx, width, texFormat, dst, format, type, (const GLvoid *) src, &ctx->Unpack, GL_TRUE); src += srcStride; dst += dstStride; } } } if (ctx->Driver.TexImage3D) { (*ctx->Driver.TexImage3D)(ctx, target, level, texImage->Format, GL_UNSIGNED_BYTE, texImage->Data, &_mesa_native_packing, texObj, texImage, &retain); } if (!retain && texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } } } /* * Read an RGBA image from the frame buffer. * This is used by glCopyTexSubImage[12]D(). * Input: ctx - the context * x, y - lower left corner * width, height - size of region to read * Return: pointer to block of GL_RGBA, GLubyte data. */ static GLubyte * read_color_image( GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height ) { GLint stride, i; GLubyte *image, *dst; image = (GLubyte *) MALLOC(width * height * 4 * sizeof(GLubyte)); if (!image) return NULL; /* Select buffer to read from */ (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer, ctx->Pixel.DriverReadBuffer ); /* XXX TODO we have to apply pixel transfer ops here! */ RENDER_START(ctx); dst = image; stride = width * 4 * sizeof(GLubyte); for (i = 0; i < height; i++) { gl_read_rgba_span( ctx, ctx->ReadBuffer, width, x, y + i, (GLubyte (*)[4]) dst ); dst += stride; } RENDER_FINISH(ctx); /* Read from draw buffer (the default) */ (*ctx->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer, ctx->Color.DriverDrawBuffer ); return image; } void _mesa_CopyTexImage1D( GLenum target, GLint level, GLenum internalFormat, GLint x, GLint y, GLsizei width, GLint border ) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexImage1D"); if (copytexture_error_check(ctx, 1, target, level, internalFormat, width, 1, border)) return; if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA || !ctx->Driver.CopyTexImage1D || !(*ctx->Driver.CopyTexImage1D)(ctx, target, level, internalFormat, x, y, width, border)) { struct gl_pixelstore_attrib unpackSave; /* get image from framebuffer */ GLubyte *image = read_color_image( ctx, x, y, width, 1 ); if (!image) { gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexImage1D" ); return; } /* call glTexImage1D to redefine the texture */ unpackSave = ctx->Unpack; ctx->Unpack = _mesa_native_packing; (*ctx->Exec->TexImage1D)( target, level, internalFormat, width, border, GL_RGBA, GL_UNSIGNED_BYTE, image ); ctx->Unpack = unpackSave; FREE(image); } } void _mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border ) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexImage2D"); if (copytexture_error_check(ctx, 2, target, level, internalFormat, width, height, border)) return; if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA || !ctx->Driver.CopyTexImage2D || !(*ctx->Driver.CopyTexImage2D)(ctx, target, level, internalFormat, x, y, width, height, border)) { struct gl_pixelstore_attrib unpackSave; /* get image from framebuffer */ GLubyte *image = read_color_image( ctx, x, y, width, height ); if (!image) { gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexImage2D" ); return; } /* call glTexImage2D to redefine the texture */ unpackSave = ctx->Unpack; ctx->Unpack = _mesa_native_packing; (ctx->Exec->TexImage2D)( target, level, internalFormat, width, height, border, GL_RGBA, GL_UNSIGNED_BYTE, image ); ctx->Unpack = unpackSave; FREE(image); } } void _mesa_CopyTexSubImage1D( GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width ) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexSubImage1D"); if (copytexsubimage_error_check(ctx, 1, target, level, xoffset, 0, 0, width, 1)) return; if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA || !ctx->Driver.CopyTexSubImage1D || !(*ctx->Driver.CopyTexSubImage1D)(ctx, target, level, xoffset, x, y, width)) { struct gl_texture_unit *texUnit; struct gl_texture_image *teximage; struct gl_pixelstore_attrib unpackSave; GLubyte *image; texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; teximage = texUnit->CurrentD[1]->Image[level]; assert(teximage); /* get image from frame buffer */ image = read_color_image(ctx, x, y, width, 1); if (!image) { gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage2D" ); return; } /* now call glTexSubImage1D to do the real work */ unpackSave = ctx->Unpack; ctx->Unpack = _mesa_native_packing; _mesa_TexSubImage1D(target, level, xoffset, width, GL_RGBA, GL_UNSIGNED_BYTE, image); ctx->Unpack = unpackSave; FREE(image); } } void _mesa_CopyTexSubImage2D( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height ) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexSubImage2D"); if (copytexsubimage_error_check(ctx, 2, target, level, xoffset, yoffset, 0, width, height)) return; if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA || !ctx->Driver.CopyTexSubImage2D || !(*ctx->Driver.CopyTexSubImage2D)(ctx, target, level, xoffset, yoffset, x, y, width, height )) { struct gl_texture_unit *texUnit; struct gl_texture_image *teximage; struct gl_pixelstore_attrib unpackSave; GLubyte *image; texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; teximage = texUnit->CurrentD[2]->Image[level]; assert(teximage); /* get image from frame buffer */ image = read_color_image(ctx, x, y, width, height); if (!image) { gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage2D" ); return; } /* now call glTexSubImage2D to do the real work */ unpackSave = ctx->Unpack; ctx->Unpack = _mesa_native_packing; _mesa_TexSubImage2D(target, level, xoffset, yoffset, width, height, GL_RGBA, GL_UNSIGNED_BYTE, image); ctx->Unpack = unpackSave; FREE(image); } } void _mesa_CopyTexSubImage3D( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height ) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexSubImage3D"); if (copytexsubimage_error_check(ctx, 3, target, level, xoffset, yoffset, zoffset, width, height)) return; if (ctx->Pixel.MapColorFlag || ctx->Pixel.ScaleOrBiasRGBA || !ctx->Driver.CopyTexSubImage3D || !(*ctx->Driver.CopyTexSubImage3D)(ctx, target, level, xoffset, yoffset, zoffset, x, y, width, height )) { struct gl_texture_unit *texUnit; struct gl_texture_image *teximage; struct gl_pixelstore_attrib unpackSave; GLubyte *image; texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; teximage = texUnit->CurrentD[3]->Image[level]; assert(teximage); /* get image from frame buffer */ image = read_color_image(ctx, x, y, width, height); if (!image) { gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage2D" ); return; } /* now call glTexSubImage2D to do the real work */ unpackSave = ctx->Unpack; ctx->Unpack = _mesa_native_packing; _mesa_TexSubImage3D(target, level, xoffset, yoffset, zoffset, width, height, 1, GL_RGBA, GL_UNSIGNED_BYTE, image); ctx->Unpack = unpackSave; FREE(image); } } void _mesa_CompressedTexImage1DARB(GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLint border, GLsizei imageSize, const GLvoid *data) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCompressedTexImage1DARB"); switch (internalFormat) { case GL_COMPRESSED_ALPHA_ARB: case GL_COMPRESSED_LUMINANCE_ARB: case GL_COMPRESSED_LUMINANCE_ALPHA_ARB: case GL_COMPRESSED_INTENSITY_ARB: case GL_COMPRESSED_RGB_ARB: case GL_COMPRESSED_RGBA_ARB: gl_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage1DARB"); return; default: /* silence compiler warning */ ; } if (target == GL_TEXTURE_1D) { struct gl_texture_unit *texUnit; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLsizei computedImageSize; if (texture_error_check(ctx, target, level, internalFormat, GL_NONE, GL_NONE, 1, width, 1, 1, border)) { return; /* error in texture image was detected */ } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; texObj = texUnit->CurrentD[1]; texImage = texObj->Image[level]; if (!texImage) { texImage = _mesa_alloc_texture_image(); texObj->Image[level] = texImage; if (!texImage) { gl_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage1DARB"); return; } } else if (texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } /* setup the teximage struct's fields */ init_texture_image(ctx, texImage, width, 1, 1, border, internalFormat); /* process the texture image */ if (data) { GLboolean retain = GL_TRUE; GLboolean success = GL_FALSE; if (ctx->Driver.CompressedTexImage1D) { success = (*ctx->Driver.CompressedTexImage1D)(ctx, target, level, imageSize, data, texObj, texImage, &retain); } if (retain || !success) { /* make internal copy of the texture image */ computedImageSize = _mesa_compressed_image_size(ctx, internalFormat, 1, /* num dims */ width, 1, /* height */ 1); /* depth */ if (computedImageSize != imageSize) { gl_error(ctx, GL_INVALID_VALUE, "glCompressedTexImage1DARB(imageSize)"); return; } texImage->Data = (GLubyte *) MALLOC(computedImageSize); if (texImage->Data) { MEMCPY(texImage->Data, data, computedImageSize); } } if (!retain && texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } } else { make_null_texture(texImage); if (ctx->Driver.CompressedTexImage1D) { GLboolean retain; (*ctx->Driver.CompressedTexImage1D)(ctx, target, level, 0, texImage->Data, texObj, texImage, &retain); } } /* state update */ gl_put_texobj_on_dirty_list( ctx, texObj ); ctx->NewState |= NEW_TEXTURING; } else if (target == GL_PROXY_TEXTURE_1D) { /* Proxy texture: check for errors and update proxy state */ GLenum error = texture_error_check(ctx, target, level, internalFormat, GL_NONE, GL_NONE, 1, width, 1, 1, border); if (!error && ctx->Driver.TestProxyTexImage) { error = !(*ctx->Driver.TestProxyTexImage)(ctx, target, level, internalFormat, GL_NONE, GL_NONE, width, 1, 1, border); } if (error) { /* if error, clear all proxy texture image parameters */ if (level>=0 && levelConst.MaxTextureLevels) { clear_proxy_teximage(ctx->Texture.Proxy1D->Image[level]); } } else { /* if no error, update proxy texture image parameters */ init_texture_image(ctx, ctx->Texture.Proxy1D->Image[level], width, 1, 1, border, internalFormat); } } else { gl_error( ctx, GL_INVALID_ENUM, "glCompressedTexImage1DARB(target)" ); return; } } void _mesa_CompressedTexImage2DARB(GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid *data) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCompressedTexImage2DARB"); switch (internalFormat) { case GL_COMPRESSED_ALPHA_ARB: case GL_COMPRESSED_LUMINANCE_ARB: case GL_COMPRESSED_LUMINANCE_ALPHA_ARB: case GL_COMPRESSED_INTENSITY_ARB: case GL_COMPRESSED_RGB_ARB: case GL_COMPRESSED_RGBA_ARB: gl_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage2DARB"); return; default: /* silence compiler warning */ ; } if (target==GL_TEXTURE_2D || (ctx->Extensions.HaveTextureCubeMap && target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB && target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB)) { struct gl_texture_unit *texUnit; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLsizei computedImageSize; if (texture_error_check(ctx, target, level, internalFormat, GL_NONE, GL_NONE, 1, width, height, 1, border)) { return; /* error in texture image was detected */ } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; texObj = texUnit->CurrentD[2]; texImage = texObj->Image[level]; if (!texImage) { texImage = _mesa_alloc_texture_image(); texObj->Image[level] = texImage; if (!texImage) { gl_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage2DARB"); return; } } else if (texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } /* setup the teximage struct's fields */ init_texture_image(ctx, texImage, width, height, 1, border, internalFormat); /* process the texture image */ if (data) { GLboolean retain = GL_TRUE; GLboolean success = GL_FALSE; if (ctx->Driver.CompressedTexImage2D) { success = (*ctx->Driver.CompressedTexImage2D)( ctx, target, level, imageSize, data, texObj, texImage, &retain); } if (retain || !success) { /* make internal copy of the texture image */ computedImageSize = _mesa_compressed_image_size(ctx, internalFormat, 2, /* num dims */ width, height, 1); /* depth */ if (computedImageSize != imageSize) { gl_error(ctx, GL_INVALID_VALUE, "glCompressedTexImage2DARB(imageSize)"); return; } texImage->Data = (GLubyte *) MALLOC(computedImageSize); if (texImage->Data) { MEMCPY(texImage->Data, data, computedImageSize); } } if (!retain && texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } } else { make_null_texture(texImage); if (ctx->Driver.CompressedTexImage2D) { GLboolean retain; (*ctx->Driver.CompressedTexImage2D)( ctx, target, level, 0, texImage->Data, texObj, texImage, &retain); } } /* state update */ gl_put_texobj_on_dirty_list( ctx, texObj ); ctx->NewState |= NEW_TEXTURING; } else if (target == GL_PROXY_TEXTURE_2D) { /* Proxy texture: check for errors and update proxy state */ GLenum error = texture_error_check(ctx, target, level, internalFormat, GL_NONE, GL_NONE, 2, width, height, 1, border); if (!error && ctx->Driver.TestProxyTexImage) { error = !(*ctx->Driver.TestProxyTexImage)(ctx, target, level, internalFormat, GL_NONE, GL_NONE, width, height, 1, border); } if (error) { /* if error, clear all proxy texture image parameters */ if (level>=0 && levelConst.MaxTextureLevels) { clear_proxy_teximage(ctx->Texture.Proxy2D->Image[level]); } } else { /* if no error, update proxy texture image parameters */ init_texture_image(ctx, ctx->Texture.Proxy2D->Image[level], width, 1, 1, border, internalFormat); } } else { gl_error( ctx, GL_INVALID_ENUM, "glCompressedTexImage2DARB(target)" ); return; } } void _mesa_CompressedTexImage3DARB(GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const GLvoid *data) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCompressedTexImage3DARB"); switch (internalFormat) { case GL_COMPRESSED_ALPHA_ARB: case GL_COMPRESSED_LUMINANCE_ARB: case GL_COMPRESSED_LUMINANCE_ALPHA_ARB: case GL_COMPRESSED_INTENSITY_ARB: case GL_COMPRESSED_RGB_ARB: case GL_COMPRESSED_RGBA_ARB: gl_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage3DARB"); return; default: /* silence compiler warning */ ; } if (target == GL_TEXTURE_3D) { struct gl_texture_unit *texUnit; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLsizei computedImageSize; if (texture_error_check(ctx, target, level, internalFormat, GL_NONE, GL_NONE, 1, width, height, depth, border)) { return; /* error in texture image was detected */ } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; texObj = texUnit->CurrentD[3]; texImage = texObj->Image[level]; if (!texImage) { texImage = _mesa_alloc_texture_image(); texObj->Image[level] = texImage; if (!texImage) { gl_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage3DARB"); return; } } else if (texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } /* setup the teximage struct's fields */ init_texture_image(ctx, texImage, width, height, depth, border, internalFormat); /* process the texture image */ if (data) { GLboolean retain = GL_TRUE; GLboolean success = GL_FALSE; if (ctx->Driver.CompressedTexImage3D) { success = (*ctx->Driver.CompressedTexImage3D)(ctx, target, level, imageSize, data, texObj, texImage, &retain); } if (retain || !success) { /* make internal copy of the texture image */ computedImageSize = _mesa_compressed_image_size(ctx, internalFormat, 3, /* num dims */ width, height, depth); if (computedImageSize != imageSize) { gl_error(ctx, GL_INVALID_VALUE, "glCompressedTexImage3DARB(imageSize)"); return; } texImage->Data = (GLubyte *) MALLOC(computedImageSize); if (texImage->Data) { MEMCPY(texImage->Data, data, computedImageSize); } } if (!retain && texImage->Data) { FREE(texImage->Data); texImage->Data = NULL; } } else { make_null_texture(texImage); if (ctx->Driver.CompressedTexImage3D) { GLboolean retain; (*ctx->Driver.CompressedTexImage3D)( ctx, target, level, 0, texImage->Data, texObj, texImage, &retain); } } /* state update */ gl_put_texobj_on_dirty_list( ctx, texObj ); ctx->NewState |= NEW_TEXTURING; } else if (target == GL_PROXY_TEXTURE_3D) { /* Proxy texture: check for errors and update proxy state */ GLenum error = texture_error_check(ctx, target, level, internalFormat, GL_NONE, GL_NONE, 1, width, height, depth, border); if (!error && ctx->Driver.TestProxyTexImage) { error = !(*ctx->Driver.TestProxyTexImage)(ctx, target, level, internalFormat, GL_NONE, GL_NONE, width, height, depth, border); } if (error) { /* if error, clear all proxy texture image parameters */ if (level>=0 && levelConst.MaxTextureLevels) { clear_proxy_teximage(ctx->Texture.Proxy3D->Image[level]); } } else { /* if no error, update proxy texture image parameters */ init_texture_image(ctx, ctx->Texture.Proxy3D->Image[level], width, 1, 1, border, internalFormat); } } else { gl_error( ctx, GL_INVALID_ENUM, "glCompressedTexImage3DARB(target)" ); return; } } void _mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLsizei imageSize, const GLvoid *data) { struct gl_texture_unit *texUnit; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLboolean success = GL_FALSE; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCompressedTexSubImage1DARB"); if (subtexture_error_check(ctx, 1, target, level, xoffset, 0, 0, width, 1, 1, format, GL_NONE)) { return; /* error was detected */ } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; texObj = _mesa_select_tex_object(ctx, texUnit, target); texImage = texObj->Image[level]; assert(texImage); if (width == 0 || !data) return; /* no-op, not an error */ if (ctx->Driver.CompressedTexSubImage1D) { success = (*ctx->Driver.CompressedTexSubImage1D)(ctx, target, level, xoffset, width, format, imageSize, data, texObj, texImage); } if (!success) { /* XXX what else can we do? */ gl_problem(ctx, "glCompressedTexSubImage1DARB failed!"); return; } } void _mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const GLvoid *data) { struct gl_texture_unit *texUnit; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLboolean success = GL_FALSE; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCompressedTexSubImage2DARB"); if (subtexture_error_check(ctx, 2, target, level, xoffset, yoffset, 0, width, height, 1, format, GL_NONE)) { return; /* error was detected */ } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; texObj = _mesa_select_tex_object(ctx, texUnit, target); texImage = texObj->Image[level]; assert(texImage); if (width == 0 || height == 0 || !data) return; /* no-op, not an error */ if (ctx->Driver.CompressedTexSubImage2D) { success = (*ctx->Driver.CompressedTexSubImage2D)(ctx, target, level, xoffset, yoffset, width, height, format, imageSize, data, texObj, texImage); } if (!success) { /* XXX what else can we do? */ gl_problem(ctx, "glCompressedTexSubImage2DARB failed!"); return; } } void _mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const GLvoid *data) { struct gl_texture_unit *texUnit; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLboolean success = GL_FALSE; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCompressedTexSubImage3DARB"); if (subtexture_error_check(ctx, 3, target, level, xoffset, yoffset, zoffset, width, height, depth, format, GL_NONE)) { return; /* error was detected */ } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; texObj = _mesa_select_tex_object(ctx, texUnit, target); texImage = texObj->Image[level]; assert(texImage); if (width == 0 || height == 0 || depth == 0 || !data) return; /* no-op, not an error */ if (ctx->Driver.CompressedTexSubImage3D) { success = (*ctx->Driver.CompressedTexSubImage3D)(ctx, target, level, xoffset, yoffset, zoffset, width, height, depth, format, imageSize, data, texObj, texImage); } if (!success) { /* XXX what else can we do? */ gl_problem(ctx, "glCompressedTexSubImage3DARB failed!"); return; } } void _mesa_GetCompressedTexImageARB(GLenum target, GLint level, GLvoid *img) { const struct gl_texture_object *texObj; struct gl_texture_image *texImage; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glGetCompressedTexImageARB"); if (level < 0 || level >= ctx->Const.MaxTextureLevels) { gl_error( ctx, GL_INVALID_VALUE, "glGetCompressedTexImageARB(level)" ); return; } switch (target) { case GL_TEXTURE_1D: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[1]; texImage = texObj->Image[level]; break; case GL_TEXTURE_2D: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[2]; texImage = texObj->Image[level]; break; case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap; texImage = texObj->Image[level]; break; case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap; texImage = texObj->NegX[level]; break; case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap; texImage = texObj->PosY[level]; break; case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap; texImage = texObj->NegY[level]; break; case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap; texImage = texObj->PosZ[level]; break; case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentCubeMap; texImage = texObj->NegZ[level]; break; case GL_TEXTURE_3D: texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[3]; texImage = texObj->Image[level]; break; default: gl_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImageARB(target)"); return; } if (!texImage) { /* invalid mipmap level */ gl_error(ctx, GL_INVALID_VALUE, "glGetCompressedTexImageARB(level)"); return; } if (!texImage->IsCompressed) { gl_error(ctx, GL_INVALID_OPERATION, "glGetCompressedTexImageARB"); return; } if (!img) return; if (ctx->Driver.GetCompressedTexImage) { (*ctx->Driver.GetCompressedTexImage)(ctx, target, level, img, texObj, texImage); } else { gl_problem(ctx, "Driver doesn't implement GetCompressedTexImage"); } }