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- /* $Id: teximage.c,v 1.11 1999/11/08 07:36:44 brianp Exp $ */
-
- /*
- * Mesa 3-D graphics library
- * Version: 3.1
- *
- * Copyright (C) 1999 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
- #ifndef XFree86Server
- #include <assert.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #else
- #include "GL/xf86glx.h"
- #endif
- #include "context.h"
- #include "image.h"
- #include "macros.h"
- #include "mmath.h"
- #include "span.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.
- */
-
-
-
- static struct gl_pixelstore_attrib defaultPacking = {
- 1, /* Alignment */
- 0, /* RowLength */
- 0, /* SkipPixels */
- 0, /* SkipRows */
- 0, /* ImageHeight */
- 0, /* SkipImages */
- GL_FALSE, /* SwapBytes */
- GL_FALSE /* LsbFirst */
- };
-
-
-
- /*
- * 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.
- */
- static GLint decode_internal_format( GLint format )
- {
- 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 */
- }
- }
-
-
-
- struct gl_texture_image *gl_alloc_texture_image( void )
- {
- return CALLOC_STRUCT(gl_texture_image);
- }
-
-
-
- void gl_free_texture_image( struct gl_texture_image *teximage )
- {
- if (teximage->Data) {
- FREE( teximage->Data );
- teximage->Data = NULL;
- }
- FREE( teximage );
- }
-
-
-
- /*
- * Examine the texImage->Format field and set the Red, Green, Blue, etc
- * texel component sizes to default values.
- * These fields are set only here by core Mesa but device drivers may
- * overwritting these fields to indicate true texel resolution.
- */
- static void set_teximage_component_sizes( struct gl_texture_image *texImage )
- {
- switch (texImage->Format) {
- case GL_ALPHA:
- texImage->RedBits = 0;
- texImage->GreenBits = 0;
- texImage->BlueBits = 0;
- texImage->AlphaBits = 8;
- texImage->IntensityBits = 0;
- texImage->LuminanceBits = 0;
- texImage->IndexBits = 0;
- break;
- case GL_LUMINANCE:
- texImage->RedBits = 0;
- texImage->GreenBits = 0;
- texImage->BlueBits = 0;
- texImage->AlphaBits = 0;
- texImage->IntensityBits = 0;
- texImage->LuminanceBits = 8;
- texImage->IndexBits = 0;
- break;
- case GL_LUMINANCE_ALPHA:
- texImage->RedBits = 0;
- texImage->GreenBits = 0;
- texImage->BlueBits = 0;
- texImage->AlphaBits = 8;
- texImage->IntensityBits = 0;
- texImage->LuminanceBits = 8;
- texImage->IndexBits = 0;
- break;
- case GL_INTENSITY:
- texImage->RedBits = 0;
- texImage->GreenBits = 0;
- texImage->BlueBits = 0;
- texImage->AlphaBits = 0;
- texImage->IntensityBits = 8;
- texImage->LuminanceBits = 0;
- texImage->IndexBits = 0;
- break;
- case GL_RED:
- texImage->RedBits = 8;
- texImage->GreenBits = 0;
- texImage->BlueBits = 0;
- texImage->AlphaBits = 0;
- texImage->IntensityBits = 0;
- texImage->LuminanceBits = 0;
- texImage->IndexBits = 0;
- break;
- case GL_GREEN:
- texImage->RedBits = 0;
- texImage->GreenBits = 8;
- texImage->BlueBits = 0;
- texImage->AlphaBits = 0;
- texImage->IntensityBits = 0;
- texImage->LuminanceBits = 0;
- texImage->IndexBits = 0;
- break;
- case GL_BLUE:
- texImage->RedBits = 0;
- texImage->GreenBits = 0;
- texImage->BlueBits = 8;
- texImage->AlphaBits = 0;
- texImage->IntensityBits = 0;
- texImage->LuminanceBits = 0;
- texImage->IndexBits = 0;
- break;
- case GL_RGB:
- case GL_BGR:
- texImage->RedBits = 8;
- texImage->GreenBits = 8;
- texImage->BlueBits = 8;
- texImage->AlphaBits = 0;
- texImage->IntensityBits = 0;
- texImage->LuminanceBits = 0;
- texImage->IndexBits = 0;
- break;
- case GL_RGBA:
- case GL_BGRA:
- case GL_ABGR_EXT:
- texImage->RedBits = 8;
- texImage->GreenBits = 8;
- texImage->BlueBits = 8;
- texImage->AlphaBits = 8;
- texImage->IntensityBits = 0;
- texImage->LuminanceBits = 0;
- texImage->IndexBits = 0;
- break;
- case GL_COLOR_INDEX:
- texImage->RedBits = 0;
- texImage->GreenBits = 0;
- texImage->BlueBits = 0;
- texImage->AlphaBits = 0;
- texImage->IntensityBits = 0;
- texImage->LuminanceBits = 0;
- texImage->IndexBits = 8;
- break;
- default:
- gl_problem(NULL, "unexpected format in set_teximage_component_sizes");
- }
- }
-
-
- /* 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
-
-
-
- /*
- * This is called by glTexImage[123]D in order to build a gl_texture_image
- * object given the client's parameters and image data.
- *
- * NOTES: Width, height and depth should include the border.
- * All texture image parameters should have already been error checked.
- */
- static struct gl_texture_image *
- make_texture_image( GLcontext *ctx, GLint internalFormat,
- GLint width, GLint height, GLint depth, GLint border,
- GLenum srcFormat, GLenum srcType, const GLvoid *pixels,
- const struct gl_pixelstore_attrib *unpacking)
- {
- GLint components, numPixels;
- struct gl_texture_image *texImage;
-
- assert(width > 0);
- assert(height > 0);
- assert(depth > 0);
- assert(border == 0 || border == 1);
- assert(pixels);
- assert(unpacking);
-
-
- /*
- * Allocate and initialize the texture_image struct
- */
- texImage = gl_alloc_texture_image();
- if (!texImage)
- return NULL;
-
- texImage->Format = (GLenum) decode_internal_format(internalFormat);
- set_teximage_component_sizes( texImage );
- texImage->IntFormat = (GLenum) internalFormat;
- texImage->Border = border;
- texImage->Width = width;
- texImage->Height = height;
- texImage->Depth = depth;
- texImage->WidthLog2 = logbase2(width - 2 * border);
- if (height == 1) /* 1-D texture */
- texImage->HeightLog2 = 0;
- else
- texImage->HeightLog2 = logbase2(height - 2 * border);
- if (depth == 1) /* 2-D texture */
- texImage->DepthLog2 = 0;
- else
- texImage->DepthLog2 = logbase2(depth - 2 * border);
- texImage->Width2 = 1 << texImage->WidthLog2;
- texImage->Height2 = 1 << texImage->HeightLog2;
- texImage->Depth2 = 1 << texImage->DepthLog2;
- texImage->MaxLog2 = MAX2(texImage->WidthLog2, texImage->HeightLog2);
-
- components = components_in_intformat(internalFormat);
- numPixels = texImage->Width * texImage->Height * texImage->Depth;
-
- texImage->Data = (GLubyte *) MALLOC(numPixels * components + EXTRA_BYTE);
-
- if (!texImage->Data) {
- /* out of memory */
- gl_free_texture_image(texImage);
- return NULL;
- }
-
-
- /*
- * 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 (srcFormat == internalFormat) {
- /* This will cover the common GL_RGB, GL_RGBA, GL_ALPHA,
- * GL_LUMINANCE_ALPHA, etc. texture formats.
- */
- const GLubyte *src = gl_pixel_addr_in_image(unpacking,
- pixels, width, height, srcFormat, srcType, 0, 0, 0);
- const GLubyte *src1 = gl_pixel_addr_in_image(unpacking,
- pixels, width, height, srcFormat, srcType, 0, 1, 0);
- const GLint srcStride = src1 - src;
- 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 texImage; /* all done */
- }
- else if (srcFormat == GL_RGBA && internalFormat == GL_RGB) {
- /* commonly used by Quake */
- const GLubyte *src = gl_pixel_addr_in_image(unpacking,
- pixels, width, height, srcFormat, srcType, 0, 0, 0);
- const GLubyte *src1 = gl_pixel_addr_in_image(unpacking,
- pixels, width, height, srcFormat, srcType, 0, 1, 0);
- const GLint srcStride = src1 - src;
- 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 texImage; /* 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 = gl_pixel_addr_in_image(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 = gl_pixel_addr_in_image(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;
- }
- }
- }
-
- return texImage; /* All done! */
- }
-
-
-
- /*
- * 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.
- */
- static struct gl_texture_image *
- make_null_texture( GLcontext *ctx, GLenum internalFormat,
- GLsizei width, GLsizei height, GLsizei depth, GLint border )
- {
- GLint components;
- struct gl_texture_image *texImage;
- GLint numPixels;
- (void) ctx;
-
- /*internalFormat = decode_internal_format(internalFormat);*/
- components = components_in_intformat(internalFormat);
- numPixels = width * height * depth;
-
- texImage = gl_alloc_texture_image();
- if (!texImage)
- return NULL;
-
- texImage->Format = (GLenum) decode_internal_format(internalFormat);
- set_teximage_component_sizes( texImage );
- texImage->IntFormat = internalFormat;
- texImage->Border = border;
- texImage->Width = width;
- texImage->Height = height;
- texImage->Depth = depth;
- texImage->WidthLog2 = logbase2(width - 2*border);
- if (height==1) /* 1-D texture */
- texImage->HeightLog2 = 0;
- else
- texImage->HeightLog2 = logbase2(height - 2*border);
- if (depth==1) /* 2-D texture */
- texImage->DepthLog2 = 0;
- else
- texImage->DepthLog2 = logbase2(depth - 2*border);
- texImage->Width2 = 1 << texImage->WidthLog2;
- texImage->Height2 = 1 << texImage->HeightLog2;
- texImage->Depth2 = 1 << texImage->DepthLog2;
- texImage->MaxLog2 = MAX2( texImage->WidthLog2, texImage->HeightLog2 );
-
- /* XXX should we really allocate memory for the image or let it be NULL? */
- /*texImage->Data = NULL;*/
-
- 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) {
- 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;
- GLint i, j, k;
- for (i=0;i<height;i++) {
- GLint srcRow = 7 - i % 8;
- for (j=0;j<width;j++) {
- GLint srcCol = j % 32;
- GLint texel = (message[srcRow][srcCol]=='X') ? 255 : 70;
- for (k=0;k<components;k++) {
- *imgPtr++ = (GLubyte) texel;
- }
- }
- }
- }
-
- return texImage;
- }
-
-
-
- /*
- * 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) {
- 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;
- }
- }
-
- /* 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 = decode_internal_format( 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 (!gl_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, GLint 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 (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[2]->Image[level];
- if (!destTex) {
- gl_error(ctx, GL_INVALID_OPERATION, "glTexSubImage2D");
- 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 (!gl_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, GLint dimensions,
- GLenum target, GLint level, GLint internalFormat,
- GLint width, GLint height, GLint border )
- {
- GLint iformat;
-
- if (target != GL_TEXTURE_1D && target != GL_TEXTURE_2D) {
- gl_error( ctx, GL_INVALID_ENUM, "glCopyTexImage1/2D(target)" );
- return GL_TRUE;
- }
-
- if (dimensions == 1 && target != GL_TEXTURE_1D) {
- gl_error( ctx, GL_INVALID_ENUM, "glCopyTexImage1D(target)" );
- return GL_TRUE;
- }
- else if (dimensions == 2 && 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;
- }
- }
-
- /* 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 = decode_internal_format( 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, GLint 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 && target != GL_TEXTURE_1D) {
- gl_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage1D(target)" );
- return GL_TRUE;
- }
- else if (dimensions == 2 && target != GL_TEXTURE_2D) {
- gl_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage2D(target)" );
- return GL_TRUE;
- }
- else if (dimensions == 3 && 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;
- }
-
-
-
-
- /*
- * Called from the API. Note that width includes the border.
- */
- void gl_TexImage1D( GLcontext *ctx, GLenum target, GLint level,
- GLint internalformat,
- GLsizei width, GLint border, GLenum format,
- GLenum type, const GLvoid *pixels )
- {
- struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage1D");
-
- if (target==GL_TEXTURE_1D) {
- struct gl_texture_image *teximage;
- if (texture_error_check( ctx, target, level, internalformat,
- format, type, 1, width, 1, 1, border )) {
- /* error in texture image was detected */
- return;
- }
-
- /* free current texture image, if any */
- if (texUnit->CurrentD[1]->Image[level]) {
- gl_free_texture_image( texUnit->CurrentD[1]->Image[level] );
- }
-
- /* make new texture from source image */
- if (pixels) {
- teximage = make_texture_image(ctx, internalformat, width, 1, 1,
- border, format, type, pixels, &ctx->Unpack);
- }
- else {
- teximage = make_null_texture(ctx, (GLenum) internalformat,
- width, 1, 1, border);
- }
-
- /* install new texture image */
- texUnit->CurrentD[1]->Image[level] = teximage;
- gl_put_texobj_on_dirty_list( ctx, texUnit->CurrentD[1] );
- ctx->NewState |= NEW_TEXTURING;
-
- /* tell driver about change */
- if (ctx->Driver.TexImage) {
- (*ctx->Driver.TexImage)( ctx, GL_TEXTURE_1D,
- texUnit->CurrentD[1],
- level, internalformat, teximage );
- }
- }
- else if (target==GL_PROXY_TEXTURE_1D) {
- /* Proxy texture: check for errors and update proxy state */
- if (texture_error_check( ctx, target, level, internalformat,
- format, type, 1, width, 1, 1, border )) {
- if (level>=0 && level<ctx->Const.MaxTextureLevels) {
- MEMSET( ctx->Texture.Proxy1D->Image[level], 0,
- sizeof(struct gl_texture_image) );
- }
- }
- else {
- ctx->Texture.Proxy1D->Image[level]->Format = (GLenum) format;
- set_teximage_component_sizes( ctx->Texture.Proxy1D->Image[level] );
- ctx->Texture.Proxy1D->Image[level]->IntFormat = (GLenum) internalformat;
- ctx->Texture.Proxy1D->Image[level]->Border = border;
- ctx->Texture.Proxy1D->Image[level]->Width = width;
- ctx->Texture.Proxy1D->Image[level]->Height = 1;
- ctx->Texture.Proxy1D->Image[level]->Depth = 1;
- }
- }
- else {
- gl_error( ctx, GL_INVALID_ENUM, "glTexImage1D(target)" );
- return;
- }
- }
-
-
- void gl_TexImage2D( GLcontext *ctx, GLenum target, GLint level,
- GLint internalformat,
- GLsizei width, GLsizei height, GLint border,
- GLenum format, GLenum type,
- const GLvoid *pixels )
- {
- struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage2D");
-
- if (target==GL_TEXTURE_2D) {
- struct gl_texture_image *teximage;
- if (texture_error_check( ctx, target, level, internalformat,
- format, type, 2, width, height, 1, border )) {
- /* error in texture image was detected */
- return;
- }
-
- /* free current texture image, if any */
- if (texUnit->CurrentD[2]->Image[level]) {
- gl_free_texture_image( texUnit->CurrentD[2]->Image[level] );
- }
-
- /* make new texture from source image */
- if (pixels) {
- teximage = make_texture_image(ctx, internalformat, width, height, 1,
- border, format, type, pixels, &ctx->Unpack);
- }
- else {
- teximage = make_null_texture(ctx, (GLenum) internalformat,
- width, height, 1, border);
- }
-
- /* install new texture image */
- texUnit->CurrentD[2]->Image[level] = teximage;
- gl_put_texobj_on_dirty_list( ctx, texUnit->CurrentD[2] );
- ctx->NewState |= NEW_TEXTURING;
-
- /* tell driver about change */
- if (ctx->Driver.TexImage) {
- (*ctx->Driver.TexImage)( ctx, GL_TEXTURE_2D,
- texUnit->CurrentD[2],
- level, internalformat, teximage );
- }
- }
- else if (target==GL_PROXY_TEXTURE_2D) {
- /* Proxy texture: check for errors and update proxy state */
- if (texture_error_check( ctx, target, level, internalformat,
- format, type, 2, width, height, 1, border )) {
- if (level>=0 && level<ctx->Const.MaxTextureLevels) {
- MEMSET( ctx->Texture.Proxy2D->Image[level], 0,
- sizeof(struct gl_texture_image) );
- }
- }
- else {
- ctx->Texture.Proxy2D->Image[level]->Format = (GLenum) format;
- set_teximage_component_sizes( ctx->Texture.Proxy2D->Image[level] );
- ctx->Texture.Proxy2D->Image[level]->IntFormat = (GLenum) internalformat;
- ctx->Texture.Proxy2D->Image[level]->Border = border;
- ctx->Texture.Proxy2D->Image[level]->Width = width;
- ctx->Texture.Proxy2D->Image[level]->Height = height;
- ctx->Texture.Proxy2D->Image[level]->Depth = 1;
- }
- }
- 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 gl_TexImage3D( GLcontext *ctx, GLenum target, GLint level,
- GLint internalformat,
- GLsizei width, GLsizei height, GLsizei depth,
- GLint border, GLenum format, GLenum type,
- const GLvoid *pixels )
- {
- struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glTexImage3D");
-
- if (target==GL_TEXTURE_3D) {
- struct gl_texture_image *teximage;
- if (texture_error_check( ctx, target, level, internalformat,
- format, type, 3, width, height, depth,
- border )) {
- /* error in texture image was detected */
- return;
- }
-
- /* free current texture image, if any */
- if (texUnit->CurrentD[3]->Image[level]) {
- gl_free_texture_image( texUnit->CurrentD[3]->Image[level] );
- }
-
- /* make new texture from source image */
- if (pixels) {
- teximage = make_texture_image(ctx, internalformat, width, height,
- depth, border, format, type, pixels, &ctx->Unpack);
- }
- else {
- teximage = make_null_texture(ctx, (GLenum) internalformat,
- width, height, depth, border);
- }
-
- /* install new texture image */
- texUnit->CurrentD[3]->Image[level] = teximage;
- gl_put_texobj_on_dirty_list( ctx, texUnit->CurrentD[3] );
- ctx->NewState |= NEW_TEXTURING;
-
- /* tell driver about change */
- if (ctx->Driver.TexImage) {
- (*ctx->Driver.TexImage)( ctx, GL_TEXTURE_3D_EXT,
- texUnit->CurrentD[3],
- level, internalformat, teximage );
- }
- }
- else if (target==GL_PROXY_TEXTURE_3D_EXT) {
- /* Proxy texture: check for errors and update proxy state */
- if (texture_error_check( ctx, target, level, internalformat,
- format, type, 3, width, height, depth,
- border )) {
- if (level>=0 && level<ctx->Const.MaxTextureLevels) {
- MEMSET( ctx->Texture.Proxy3D->Image[level], 0,
- sizeof(struct gl_texture_image) );
- }
- }
- else {
- ctx->Texture.Proxy3D->Image[level]->Format = (GLenum) format;
- set_teximage_component_sizes( ctx->Texture.Proxy3D->Image[level] );
- ctx->Texture.Proxy3D->Image[level]->IntFormat = (GLenum) internalformat;
- ctx->Texture.Proxy3D->Image[level]->Border = border;
- ctx->Texture.Proxy3D->Image[level]->Width = width;
- ctx->Texture.Proxy3D->Image[level]->Height = height;
- ctx->Texture.Proxy3D->Image[level]->Depth = depth;
- }
- }
- else {
- gl_error( ctx, GL_INVALID_ENUM, "glTexImage3D(target)" );
- return;
- }
- }
-
-
-
- void gl_GetTexImage( GLcontext *ctx, GLenum target, GLint level, GLenum format,
- GLenum type, GLvoid *pixels )
- {
- const struct gl_texture_object *texObj;
-
- 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 (gl_sizeof_type(type) <= 0) {
- gl_error( ctx, GL_INVALID_ENUM, "glGetTexImage(type)" );
- return;
- }
-
- if (gl_components_in_format(format) <= 0) {
- gl_error( ctx, GL_INVALID_ENUM, "glGetTexImage(format)" );
- return;
- }
-
- if (!pixels)
- return; /* XXX generate an error??? */
-
- switch (target) {
- case GL_TEXTURE_1D:
- texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[1];
- break;
- case GL_TEXTURE_2D:
- texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[2];
- break;
- case GL_TEXTURE_3D:
- texObj = ctx->Texture.Unit[ctx->Texture.CurrentUnit].CurrentD[3];
- break;
- default:
- gl_error( ctx, GL_INVALID_ENUM, "glGetTexImage(target)" );
- return;
- }
-
- if (texObj->Image[level] && texObj->Image[level]->Data) {
- const struct gl_texture_image *texImage = texObj->Image[level];
- GLint width = texImage->Width;
- GLint height = texImage->Height;
- GLint row;
-
- for (row = 0; row < height; row++) {
- /* compute destination address in client memory */
- GLvoid *dest = gl_pixel_addr_in_image( &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);
- gl_pack_rgba_span( ctx, width, (void *) 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" );
- }
- gl_pack_rgba_span( ctx, width, (const GLubyte (*)[4])rgba,
- format, type, dest, &ctx->Pack, GL_TRUE );
- }
- }
- }
- }
-
-
-
- void gl_TexSubImage1D( GLcontext *ctx, GLenum target, GLint level,
- GLint xoffset, GLsizei width,
- GLenum format, GLenum type,
- const GLvoid *pixels )
- {
- struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
- struct gl_texture_image *destTex;
-
- if (subtexture_error_check(ctx, 1, target, level, xoffset, 0, 0,
- width, 1, 1, format, type)) {
- /* error was detected */
- return;
- }
-
- destTex = texUnit->CurrentD[1]->Image[level];
- assert(destTex);
-
- if (width == 0 || !pixels)
- return; /* no-op, not an error */
-
-
- /*
- * Replace the texture subimage
- */
- {
- const GLint texComponents = components_in_intformat(destTex->Format);
- const GLenum texFormat = destTex->Format;
- const GLint xoffsetb = xoffset + destTex->Border;
- GLubyte *dst = destTex->Data + xoffsetb * texComponents;
- if (texFormat == GL_COLOR_INDEX) {
- /* color index texture */
- const GLvoid *src = gl_pixel_addr_in_image(&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 */
- const GLvoid *src = gl_pixel_addr_in_image(&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);
- }
- }
-
- gl_put_texobj_on_dirty_list( ctx, texUnit->CurrentD[1] );
-
- /*
- * Inform device driver of texture image change.
- */
- if (ctx->Driver.TexSubImage) {
- (*ctx->Driver.TexSubImage)(ctx, GL_TEXTURE_1D, texUnit->CurrentD[1],
- level, xoffset, 0, width, 1,
- texUnit->CurrentD[1]->Image[level]->IntFormat,
- destTex );
- }
- else {
- if (ctx->Driver.TexImage) {
- (*ctx->Driver.TexImage)(ctx, GL_TEXTURE_1D, texUnit->CurrentD[1],
- level,
- texUnit->CurrentD[1]->Image[level]->IntFormat,
- destTex );
- }
- }
- }
-
-
- void gl_TexSubImage2D( GLcontext *ctx, GLenum target, GLint level,
- GLint xoffset, GLint yoffset,
- GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- const GLvoid *pixels )
- {
- struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
- struct gl_texture_image *destTex;
-
- if (subtexture_error_check(ctx, 2, target, level, xoffset, yoffset, 0,
- width, height, 1, format, type)) {
- /* error was detected */
- return;
- }
-
- destTex = texUnit->CurrentD[2]->Image[level];
- assert(destTex);
-
- if (width == 0 || height == 0 || !pixels)
- return; /* no-op, not an error */
-
-
- /*
- * Replace the texture subimage
- */
- {
- const GLint texComponents = components_in_intformat(destTex->Format);
- const GLenum texFormat = destTex->Format;
- const GLint xoffsetb = xoffset + destTex->Border;
- const GLint yoffsetb = yoffset + destTex->Border;
- GLubyte *dst = destTex->Data
- + (yoffsetb * destTex->Width + xoffsetb) * texComponents;
- if (texFormat == GL_COLOR_INDEX) {
- /* color index texture */
- const GLint stride = destTex->Width * sizeof(GLubyte);
- GLint row;
- for (row = 0; row < height; row++) {
- const GLvoid *src = gl_pixel_addr_in_image(&ctx->Unpack, pixels,
- width, height, format, type, 0, row, 0);
- _mesa_unpack_index_span(ctx, width, GL_UNSIGNED_BYTE, dst,
- type, src, &ctx->Unpack, GL_TRUE);
- dst += stride;
- }
- }
- else {
- /* color texture */
- const GLint stride = destTex->Width * texComponents * sizeof(GLubyte);
- GLint row;
- for (row = 0; row < height; row++) {
- const GLvoid *src = gl_pixel_addr_in_image(&ctx->Unpack, pixels,
- width, height, format, type, 0, row, 0);
- _mesa_unpack_ubyte_color_span(ctx, width, texFormat, dst,
- format, type, src, &ctx->Unpack, GL_TRUE);
- dst += stride;
- }
- }
- }
-
- gl_put_texobj_on_dirty_list( ctx, texUnit->CurrentD[2] );
-
- /*
- * Inform device driver of texture image change.
- */
- if (ctx->Driver.TexSubImage) {
- (*ctx->Driver.TexSubImage)(ctx, GL_TEXTURE_2D, texUnit->CurrentD[2],
- level, xoffset, yoffset, width, height,
- texUnit->CurrentD[2]->Image[level]->IntFormat,
- destTex );
- }
- else {
- if (ctx->Driver.TexImage) {
- (*ctx->Driver.TexImage)(ctx, GL_TEXTURE_2D, texUnit->CurrentD[2],
- level,
- texUnit->CurrentD[2]->Image[level]->IntFormat,
- destTex );
- }
- }
- }
-
-
-
- void gl_TexSubImage3D( GLcontext *ctx, 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 = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
- struct gl_texture_image *destTex;
-
- if (subtexture_error_check(ctx, 3, target, level, xoffset, yoffset, zoffset,
- width, height, depth, format, type)) {
- /* error was detected */
- return;
- }
-
- destTex = texUnit->CurrentD[3]->Image[level];
- assert(destTex);
-
- if (width == 0 || height == 0 || height == 0 || !pixels)
- return; /* no-op, not an error */
-
- /*
- * Replace the texture subimage
- */
- {
- const GLint texComponents = components_in_intformat(destTex->Format);
- const GLenum texFormat = destTex->Format;
- const GLint xoffsetb = xoffset + destTex->Border;
- const GLint yoffsetb = yoffset + destTex->Border;
- const GLint zoffsetb = zoffset + destTex->Border;
- GLint dstRectArea = destTex->Width * destTex->Height;
- GLubyte *dst = destTex->Data
- + (zoffsetb * dstRectArea + yoffsetb * destTex->Width + xoffsetb)
- * texComponents;
-
- if (texFormat == GL_COLOR_INDEX) {
- /* color index texture */
- const GLint stride = destTex->Width * sizeof(GLubyte);
- GLint img, row;
- for (img = 0; img < depth; img++) {
- for (row = 0; row < height; row++) {
- const GLvoid *src = gl_pixel_addr_in_image(&ctx->Unpack, pixels,
- width, height, format, type, img, row, 0);
- _mesa_unpack_index_span(ctx, width, GL_UNSIGNED_BYTE, dst,
- type, src, &ctx->Unpack, GL_TRUE);
- dst += stride;
- }
- }
- }
- else {
- /* color texture */
- const GLint stride = destTex->Width * texComponents * sizeof(GLubyte);
- GLint img, row;
- for (img = 0; img < depth; img++) {
- for (row = 0; row < height; row++) {
- const GLvoid *src = gl_pixel_addr_in_image(&ctx->Unpack, pixels,
- width, height, format, type, img, row, 0);
- _mesa_unpack_ubyte_color_span(ctx, width, texFormat, dst,
- format, type, src, &ctx->Unpack, GL_TRUE);
- dst += stride;
- }
- }
- }
- }
-
- gl_put_texobj_on_dirty_list( ctx, texUnit->CurrentD[1] );
-
- /*
- * Inform device driver of texture image change.
- */
- /* XXX todo */
- }
-
-
-
- /*
- * 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 = MALLOC(width * height * 4 * sizeof(GLubyte));
- if (!image)
- return NULL;
-
- /* Select buffer to read from */
- (void) (*ctx->Driver.SetBuffer)( ctx, ctx->Pixel.DriverReadBuffer );
-
- dst = image;
- stride = width * 4 * sizeof(GLubyte);
- for (i = 0; i < height; i++) {
- gl_read_rgba_span( ctx, width, x, y + i, (GLubyte (*)[4]) dst );
- dst += stride;
- }
-
- /* Restore drawing buffer */
- (void) (*ctx->Driver.SetBuffer)( ctx, ctx->Color.DriverDrawBuffer );
-
- return image;
- }
-
-
-
- void gl_CopyTexImage1D( GLcontext *ctx, GLenum target, GLint level,
- GLenum internalFormat,
- GLint x, GLint y,
- GLsizei width, GLint border )
- {
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexImage1D");
-
- if (!copytexture_error_check(ctx, 1, target, level, internalFormat,
- width, 1, border)) {
- GLubyte *image = read_color_image( ctx, x, y, width, 1 );
- if (!image) {
- gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexImage1D" );
- return;
- }
- (*ctx->Exec.TexImage1D)( ctx, target, level, internalFormat, width,
- border, GL_RGBA, GL_UNSIGNED_BYTE, image );
- FREE(image);
- }
- }
-
-
-
- void gl_CopyTexImage2D( GLcontext *ctx, GLenum target, GLint level,
- GLenum internalFormat,
- GLint x, GLint y, GLsizei width, GLsizei height,
- GLint border )
- {
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexImage2D");
-
- if (!copytexture_error_check(ctx, 2, target, level, internalFormat,
- width, height, border)) {
- GLubyte *image = read_color_image( ctx, x, y, width, height );
- if (!image) {
- gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexImage2D" );
- return;
- }
- {
- struct gl_pixelstore_attrib save = ctx->Unpack;
- ctx->Unpack = defaultPacking;
- (ctx->Exec.TexImage2D)( ctx, target, level, internalFormat, width,
- height, border, GL_RGBA, GL_UNSIGNED_BYTE, image );
- ctx->Unpack = save; /* restore */
- }
- FREE(image);
- }
- }
-
-
-
- /*
- * Do the work of glCopyTexSubImage[123]D.
- */
- static void
- copy_tex_sub_image( GLcontext *ctx, struct gl_texture_image *dest,
- GLint width, GLint height,
- GLint srcx, GLint srcy,
- GLint dstx, GLint dsty, GLint dstz )
- {
- static struct gl_pixelstore_attrib packing = {
- 1, /* Alignment */
- 0, /* RowLength */
- 0, /* SkipPixels */
- 0, /* SkipRows */
- 0, /* ImageHeight */
- 0, /* SkipImages */
- GL_FALSE, /* SwapBytes */
- GL_FALSE /* LsbFirst */
- };
-
- GLint i;
- GLint format, components, rectarea;
- GLint texwidth, texheight, zoffset;
-
- /* dst[xyz] may be negative if we have a texture border! */
- dstx += dest->Border;
- dsty += dest->Border;
- dstz += dest->Border;
- texwidth = dest->Width;
- texheight = dest->Height;
- rectarea = texwidth * texheight;
- zoffset = dstz * rectarea;
- format = dest->Format;
- components = components_in_intformat( format );
-
- /* Select buffer to read from */
- (void) (*ctx->Driver.SetBuffer)( ctx, ctx->Pixel.DriverReadBuffer );
-
- for (i = 0;i < height; i++) {
- GLubyte rgba[MAX_WIDTH][4];
- GLubyte *dst;
- gl_read_rgba_span( ctx, width, srcx, srcy + i, rgba );
- dst = dest->Data + ( zoffset + (dsty+i) * texwidth + dstx) * components;
- _mesa_unpack_ubyte_color_span(ctx, width, format, dst,
- GL_RGBA, GL_UNSIGNED_BYTE, rgba,
- &packing, GL_TRUE);
- }
-
- /* Restore drawing buffer */
- (void) (*ctx->Driver.SetBuffer)( ctx, ctx->Color.DriverDrawBuffer );
- }
-
-
-
-
- void gl_CopyTexSubImage1D( GLcontext *ctx, GLenum target, GLint level,
- GLint xoffset, GLint x, GLint y, GLsizei width )
- {
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexSubImage1D");
-
- if (!copytexsubimage_error_check(ctx, 1, target, level,
- xoffset, 0, 0, width, 1)) {
- struct gl_texture_unit *texUnit;
- struct gl_texture_image *teximage;
- texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
- teximage = texUnit->CurrentD[1]->Image[level];
- assert(teximage);
- if (teximage->Data) {
- copy_tex_sub_image(ctx, teximage, width, 1, x, y, xoffset, 0, 0);
- /* tell driver about the change */
- if (ctx->Driver.TexImage) {
- (*ctx->Driver.TexImage)( ctx, GL_TEXTURE_1D,
- texUnit->CurrentD[1],
- level, teximage->IntFormat, teximage );
- }
- }
- }
- }
-
-
-
- void gl_CopyTexSubImage2D( GLcontext *ctx, GLenum target, GLint level,
- GLint xoffset, GLint yoffset,
- GLint x, GLint y, GLsizei width, GLsizei height )
- {
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexSubImage2D");
-
- if (!copytexsubimage_error_check(ctx, 2, target, level,
- xoffset, yoffset, 0, width, height)) {
- struct gl_texture_unit *texUnit;
- struct gl_texture_image *teximage;
- texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
- teximage = texUnit->CurrentD[2]->Image[level];
- assert(teximage);
- if (teximage->Data) {
- copy_tex_sub_image(ctx, teximage, width, height,
- x, y, xoffset, yoffset, 0);
- /* tell driver about the change */
- if (ctx->Driver.TexImage) {
- (*ctx->Driver.TexImage)( ctx, GL_TEXTURE_2D,
- texUnit->CurrentD[2],
- level, teximage->IntFormat, teximage );
- }
- }
- }
- }
-
-
-
- void gl_CopyTexSubImage3D( GLcontext *ctx, GLenum target, GLint level,
- GLint xoffset, GLint yoffset, GLint zoffset,
- GLint x, GLint y, GLsizei width, GLsizei height )
- {
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyTexSubImage3D");
-
- if (!copytexsubimage_error_check(ctx, 3, target, level,
- xoffset, yoffset, zoffset, width, height)) {
- struct gl_texture_unit *texUnit;
- struct gl_texture_image *teximage;
- texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
- teximage = texUnit->CurrentD[3]->Image[level];
- assert(teximage);
- if (teximage->Data) {
- copy_tex_sub_image(ctx, teximage, width, height,
- x, y, xoffset, yoffset, zoffset);
- /* tell driver about the change */
- if (ctx->Driver.TexImage) {
- (*ctx->Driver.TexImage)( ctx, GL_TEXTURE_3D,
- texUnit->CurrentD[3],
- level, teximage->IntFormat, teximage );
- }
- }
- }
- }
-
-