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finished convolution

tags/mesa_3_5
Brian Paul 25 лет назад
Родитель
bfc6ee1b13
Сommit
a805bb9691
1 измененных файлов: 216 добавлений и 256 удалений
Разделённый вид Показать статистику Diff
  1. 216
    256
      src/mesa/main/teximage.c

+ 216
- 256
src/mesa/main/teximage.c Просмотреть файл

@@ -1,4 +1,4 @@
/* $Id: teximage.c,v 1.44 2000/09/01 22:01:12 brianp Exp $ */
/* $Id: teximage.c,v 1.45 2000/09/02 17:52:21 brianp Exp $ */

/*
* Mesa 3-D graphics library
@@ -670,184 +670,157 @@ adjust_texture_size_for_convolution(const GLcontext *ctx, GLuint dimensions,



/* 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.
* Input: dimensions (1, 2, or 3)
* texImage - destination texture image (we'll malloc the memory)
* width, height, depth - size of source image
* srcFormat, srcType - source image format and type
* pixels - source image data
* srcPacking - source image packing parameters
*
* NOTE: All texture image parameters should have already been error checked.
*
* NOTE: the texImage dimensions and source image dimensions must be correct
* with respect to convolution with border mode = reduce.
* This function is used to move user image data into a texture image.
* We handle full texture images and subtexture images. We also take
* care of all image transfer operations here, including convolution.
* Input:
* dstXoffset, dstYoffset, dstZoffset - offsets in pixels
* dstRowStride, dstImageStride - strides in bytes
*/
static void
make_texture_image( GLcontext *ctx, GLuint dimensions,
struct gl_texture_image *texImage,
GLint width, GLint height, GLint depth,
GLenum srcFormat, GLenum srcType, const GLvoid *pixels,
fill_texture_image( GLcontext *ctx, GLuint dimensions,
GLenum texFormat, GLubyte *texAddr,
GLint srcWidth, GLint srcHeight, GLint srcDepth,
GLint dstXoffset, GLint dstYoffset, GLint dstZoffset,
GLint dstRowStride, GLint dstImageStride,
GLenum srcFormat, GLenum srcType, const GLvoid *srcAddr,
const struct gl_pixelstore_attrib *srcPacking)
{
GLint components, numPixels;
GLint internalFormat, border;
GLint texComponents;

ASSERT(ctx);
ASSERT(texImage);
ASSERT(!texImage->Data);
ASSERT(pixels);
ASSERT(dimensions >= 1 && dimensions <= 3);
ASSERT(texAddr);
ASSERT(srcWidth >= 1);
ASSERT(srcHeight >= 1);
ASSERT(srcDepth >= 1);
ASSERT(dstXoffset >= 0);
ASSERT(dstYoffset >= 0);
ASSERT(dstZoffset >= 0);
ASSERT(dstRowStride >= 0);
ASSERT(dstImageStride >= 0);
ASSERT(srcAddr);
ASSERT(srcPacking);

internalFormat = texImage->IntFormat;
border = texImage->Border;
components = components_in_intformat(internalFormat);

ASSERT(width > 0);
ASSERT(height > 0);
ASSERT(depth > 0);
ASSERT(border == 0 || border == 1);
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.
*/

if (ctx->ImageTransferState == UPDATE_IMAGE_TRANSFER_STATE)
_mesa_update_image_transfer_state(ctx);
texComponents = components_in_intformat(texFormat);

/* try common 2D texture cases first */
if (!ctx->ImageTransferState && srcType == GL_UNSIGNED_BYTE && depth == 1) {
if (!ctx->ImageTransferState && dimensions == 2
&& srcType == GL_UNSIGNED_BYTE) {

if (srcFormat == internalFormat ||
(srcFormat == GL_LUMINANCE && internalFormat == 1) ||
(srcFormat == GL_LUMINANCE_ALPHA && internalFormat == 2) ||
(srcFormat == GL_RGB && internalFormat == 3) ||
(srcFormat == GL_RGBA && internalFormat == 4)) {
if (srcFormat == texFormat) {
/* This will cover the common GL_RGB, GL_RGBA, GL_ALPHA,
* GL_LUMINANCE_ALPHA, etc. texture formats.
* GL_LUMINANCE_ALPHA, etc. texture formats. Use memcpy().
*/
const GLubyte *src = (const GLubyte *) _mesa_image_address(
srcPacking, pixels, width, height, srcFormat, srcType, 0, 0, 0);
const GLint srcStride = _mesa_image_row_stride(srcPacking, width,
srcFormat, srcType);
GLubyte *dst = texImage->Data;
GLint dstBytesPerRow = width * components * sizeof(GLubyte);
if (srcStride == dstBytesPerRow) {
MEMCPY(dst, src, height * dstBytesPerRow);
srcPacking, srcAddr, srcWidth, srcHeight,
srcFormat, srcType, 0, 0, 0);
const GLint srcRowStride = _mesa_image_row_stride(srcPacking,
srcWidth, srcFormat, srcType);
const GLint widthInBytes = srcWidth * texComponents;
GLubyte *dst = texAddr + dstYoffset * dstRowStride
+ dstXoffset * texComponents * sizeof(GLubyte);
if (srcRowStride == widthInBytes && dstRowStride == widthInBytes) {
MEMCPY(dst, src, srcHeight * widthInBytes);
}
else {
GLint i;
for (i = 0; i < height; i++) {
MEMCPY(dst, src, dstBytesPerRow);
src += srcStride;
dst += dstBytesPerRow;
for (i = 0; i < srcHeight; i++) {
MEMCPY(dst, src, widthInBytes);
src += srcRowStride;
dst += dstRowStride;
}
}
return; /* all done */
}
else if (srcFormat == GL_RGBA && internalFormat == GL_RGB) {
else if (srcFormat == GL_RGBA && texFormat == GL_RGB) {
/* commonly used by Quake */
const GLubyte *src = (const GLubyte *) _mesa_image_address(
srcPacking, pixels, width, height, srcFormat, srcType, 0, 0, 0);
const GLint srcStride = _mesa_image_row_stride(srcPacking, width,
srcFormat, srcType);
GLubyte *dst = texImage->Data;
srcPacking, srcAddr, srcWidth, srcHeight,
srcFormat, srcType, 0, 0, 0);
const GLint srcRowStride = _mesa_image_row_stride(srcPacking,
srcWidth, srcFormat, srcType);
GLubyte *dst = texAddr + dstYoffset * dstRowStride
+ dstXoffset * texComponents * sizeof(GLubyte);
GLint i, j;
for (i = 0; i < height; i++) {
for (i = 0; i < srcHeight; i++) {
const GLubyte *s = src;
for (j = 0; j < width; j++) {
*dst++ = *s++; /*red*/
*dst++ = *s++; /*green*/
*dst++ = *s++; /*blue*/
s++; /*alpha*/
GLubyte *d = dst;
for (j = 0; j < srcWidth; j++) {
*d++ = *s++; /*red*/
*d++ = *s++; /*green*/
*d++ = *s++; /*blue*/
s++; /*alpha*/
}
src += srcStride;
src += srcRowStride;
dst += dstRowStride;
}
return; /* all done */
}
}


/*
* General case solutions
*/
if (texImage->Format == GL_COLOR_INDEX) {
if (texFormat == GL_COLOR_INDEX) {
/* color index texture */
const GLint destBytesPerRow = width * components * sizeof(GLubyte);
const GLenum dstType = GL_UNSIGNED_BYTE;
GLubyte *destTex = texImage->Data;
const GLenum texType = GL_UNSIGNED_BYTE;
GLint img, row;
for (img = 0; img < depth; img++) {
for (row = 0; row < height; row++) {
const GLvoid *srcAddr = _mesa_image_address(srcPacking,
pixels, width, height, srcFormat, srcType, img, row, 0);
_mesa_unpack_index_span(ctx, width, dstType, destTex,
srcType, srcAddr, srcPacking,
GLubyte *dest = texAddr + dstZoffset * dstImageStride
+ dstYoffset * dstRowStride
+ dstXoffset * texComponents * sizeof(GLubyte);
for (img = 0; img < srcDepth; img++) {
GLubyte *destRow = dest;
for (row = 0; row < srcHeight; row++) {
const GLvoid *src = _mesa_image_address(srcPacking,
srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
_mesa_unpack_index_span(ctx, srcWidth, texType, destRow,
srcType, src, srcPacking,
ctx->ImageTransferState);
destTex += destBytesPerRow;
destRow += dstRowStride;
}
dest += dstImageStride;
}
}
else {
/* regular, color texture */
GLint destBytesPerRow;
const GLenum dstFormat = texImage->Format;
GLubyte *destTex = texImage->Data;
GLint img, row;
GLint convWidth = width, convHeight = height;

if ((dimensions == 1 && ctx->Pixel.Convolution1DEnabled) ||
(dimensions >= 2 &&
(ctx->Pixel.Convolution2DEnabled || ctx->Pixel.Separable2DEnabled)
)) {
(dimensions >= 2 && ctx->Pixel.Convolution2DEnabled) ||
(dimensions >= 2 && ctx->Pixel.Separable2DEnabled)) {
/*
* Fill texture image with convolution
*/
GLint img, row;
GLint convWidth = srcWidth, convHeight = srcHeight;
GLfloat *tmpImage, *convImage;
tmpImage = (GLfloat *) MALLOC(width * height * 4 * sizeof(GLfloat));
tmpImage = (GLfloat *) MALLOC(srcWidth * srcHeight * 4 * sizeof(GLfloat));
if (!tmpImage) {
gl_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
return;
}
convImage = (GLfloat *) MALLOC(width * height * 4 * sizeof(GLfloat));
convImage = (GLfloat *) MALLOC(srcWidth * srcHeight * 4 * sizeof(GLfloat));
if (!convImage) {
gl_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
FREE(tmpImage);
return;
}

for (img = 0; img < depth; img++) {
for (img = 0; img < srcDepth; img++) {
const GLfloat *srcf;
GLfloat *dstf = tmpImage;
GLubyte *dest;

/* unpack and do transfer ops up to convolution */
for (row = 0; row < height; row++) {
const GLvoid *srcAddr = _mesa_image_address(srcPacking,
pixels, width, height, srcFormat, srcType, img, row, 0);
_mesa_unpack_float_color_span(ctx, width, GL_RGBA, dstf,
srcFormat, srcType, srcAddr, srcPacking,
ctx->ImageTransferState & IMAGE_PRE_CONVOLUTION_BITS,
GL_TRUE);
dstf += width * 4;
for (row = 0; row < srcHeight; row++) {
const GLvoid *src = _mesa_image_address(srcPacking,
srcAddr, srcWidth, srcHeight,
srcFormat, srcType, img, row, 0);
_mesa_unpack_float_color_span(ctx, srcWidth, GL_RGBA, dstf,
srcFormat, srcType, src, srcPacking,
ctx->ImageTransferState & IMAGE_PRE_CONVOLUTION_BITS,
GL_TRUE);
dstf += srcWidth * 4;
}

/* convolve */
@@ -869,16 +842,17 @@ make_texture_image( GLcontext *ctx, GLuint dimensions,

/* packing and transfer ops after convolution */
srcf = convImage;
destBytesPerRow = convWidth * components * sizeof(GLubyte);
dest = texAddr + (dstZoffset + img) * dstImageStride
+ dstYoffset * dstRowStride;
for (row = 0; row < convHeight; row++) {
_mesa_pack_float_rgba_span(ctx, convWidth,
(const GLfloat (*)[4]) srcf,
dstFormat, GL_UNSIGNED_BYTE,
destTex, &_mesa_native_packing,
texFormat, GL_UNSIGNED_BYTE,
dest, &_mesa_native_packing,
ctx->ImageTransferState
& IMAGE_POST_CONVOLUTION_BITS);
srcf += convWidth * 4;
destTex += destBytesPerRow;
dest += dstRowStride;
}
}

@@ -886,17 +860,25 @@ make_texture_image( GLcontext *ctx, GLuint dimensions,
FREE(tmpImage);
}
else {
/* no convolution */
destBytesPerRow = width * components * sizeof(GLubyte);
for (img = 0; img < depth; img++) {
for (row = 0; row < height; row++) {
/*
* no convolution
*/
GLint img, row;
GLubyte *dest = texAddr + dstZoffset * dstImageStride
+ dstYoffset * dstRowStride
+ dstXoffset * texComponents * sizeof(GLubyte);
for (img = 0; img < srcDepth; img++) {
GLubyte *destRow = dest;
for (row = 0; row < srcHeight; row++) {
const GLvoid *srcAddr = _mesa_image_address(srcPacking,
pixels, width, height, srcFormat, srcType, img, row, 0);
_mesa_unpack_ubyte_color_span(ctx, width, dstFormat, destTex,
srcFormat, srcType, srcAddr, srcPacking,
ctx->ImageTransferState);
destTex += destBytesPerRow;
srcAddr, srcWidth, srcHeight,
srcFormat, srcType, img, row, 0);
_mesa_unpack_ubyte_color_span(ctx, srcWidth, texFormat, destRow,
srcFormat, srcType, srcAddr, srcPacking,
ctx->ImageTransferState);
destRow += dstRowStride;
}
dest += dstImageStride;
}
}
}
@@ -904,6 +886,66 @@ make_texture_image( GLcontext *ctx, GLuint dimensions,



/* 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.
* Input: dimensions (1, 2, or 3)
* texImage - destination texture image (we'll malloc the memory)
* width, height, depth - size of source image
* srcFormat, srcType - source image format and type
* pixels - source image data
* srcPacking - source image packing parameters
*
* NOTE: All texture image parameters should have already been error checked.
*
* NOTE: the texImage dimensions and source image dimensions must be correct
* with respect to convolution with border mode = reduce.
*/
static void
make_texture_image( GLcontext *ctx, GLuint dimensions,
struct gl_texture_image *texImage,
GLint width, GLint height, GLint depth,
GLenum srcFormat, GLenum srcType, const GLvoid *pixels,
const struct gl_pixelstore_attrib *srcPacking)
{
const GLint internalFormat = texImage->IntFormat;
const GLint components = components_in_intformat(internalFormat);
GLint convWidth = width, convHeight = height;

if (ctx->ImageTransferState == UPDATE_IMAGE_TRANSFER_STATE) {
_mesa_update_image_transfer_state(ctx);
}

if (ctx->ImageTransferState & IMAGE_CONVOLUTION_BIT) {
adjust_texture_size_for_convolution(ctx, dimensions,
&convWidth, &convHeight);
}

texImage->Data = (GLubyte *) MALLOC(convWidth * convHeight * depth
* components + EXTRA_BYTE);
if (!texImage->Data)
return; /* out of memory */

fill_texture_image(ctx, dimensions, texImage->Format, texImage->Data,
width, height, depth, 0, 0, 0,
convWidth * components * sizeof(GLubyte),
convWidth * convHeight * components * sizeof(GLubyte),
srcFormat, srcType, pixels, srcPacking);
}



/*
* glTexImage[123]D can accept a NULL image pointer. In this case we
* create a texture image with unspecified image contents per the OpenGL
@@ -2213,9 +2255,13 @@ _mesa_TexSubImage1D( GLenum target, GLint level,
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GLboolean success = GL_FALSE;
GLsizei postConvWidth;

postConvWidth = width;
adjust_texture_size_for_convolution(ctx, 1, &postConvWidth, NULL);

if (subtexture_error_check(ctx, 1, target, level, xoffset, 0, 0,
width, 1, 1, format, type)) {
postConvWidth, 1, 1, format, type)) {
return; /* error was detected */
}

@@ -2237,10 +2283,6 @@ _mesa_TexSubImage1D( GLenum target, GLint level,
}
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 );
@@ -2251,25 +2293,10 @@ _mesa_TexSubImage1D( GLenum target, GLint level,
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,
ctx->ImageTransferState);
}
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);
/* XXX change for convolution */
_mesa_unpack_ubyte_color_span(ctx, width, texFormat, dst, format,
type, src, &ctx->Unpack,
ctx->ImageTransferState);
}
fill_texture_image(ctx, 1, texImage->Format, texImage->Data,
width, 1, 1, xoffset, 0, 0, /* size and offsets */
0, 0, /* strides */
format, type, pixels, &ctx->Unpack);

if (ctx->Driver.TexImage1D) {
(*ctx->Driver.TexImage1D)( ctx, target, level, texImage->Format,
@@ -2283,8 +2310,6 @@ _mesa_TexSubImage1D( GLenum target, GLint level,
texImage->Data = NULL;
}
}

/*gl_put_texobj_on_dirty_list( ctx, texUnit->CurrentD[1] );*/
}


@@ -2300,9 +2325,14 @@ _mesa_TexSubImage2D( GLenum target, GLint level,
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GLboolean success = GL_FALSE;
GLsizei postConvWidth, postConvHeight;

postConvWidth = width;
postConvHeight = height;
adjust_texture_size_for_convolution(ctx, 2, &postConvWidth,&postConvHeight);

if (subtexture_error_check(ctx, 2, target, level, xoffset, yoffset, 0,
width, height, 1, format, type)) {
postConvWidth, postConvHeight, 1, format, type)) {
return; /* error was detected */
}

@@ -2324,14 +2354,8 @@ _mesa_TexSubImage2D( GLenum target, GLint level,
}
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);
const GLint texComps = components_in_intformat(texImage->Format);
const GLint texRowStride = texImage->Width * texComps * sizeof(GLubyte);
GLboolean retain = GL_TRUE;

if (!texImage->Data) {
@@ -2343,38 +2367,10 @@ _mesa_TexSubImage2D( GLenum target, GLint level,
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 = _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,
ctx->ImageTransferState);
src += srcStride;
dst += dstStride;
}
}
else {
/* color texture */
GLubyte *dst = texImage->Data
+ (yoffsetb * texImage->Width + xoffsetb) * texComponents;
const GLubyte *src = _mesa_image_address(&ctx->Unpack, pixels,
width, height, format, type, 0, 0, 0);
GLint row;
/* XXX change for convolution */
for (row = 0; row < height; row++) {
_mesa_unpack_ubyte_color_span(ctx, width, texFormat, dst, format,
type, (const GLvoid *) src,
&ctx->Unpack,
ctx->ImageTransferState);
src += srcStride;
dst += dstStride;
}
}
fill_texture_image(ctx, 2, texImage->Format, texImage->Data,
width, height, 1, xoffset, yoffset, 0,
texRowStride, 0,
format, type, pixels, &ctx->Unpack);

if (ctx->Driver.TexImage2D) {
(*ctx->Driver.TexImage2D)(ctx, target, level, texImage->Format,
@@ -2441,57 +2437,25 @@ _mesa_TexSubImage3D( GLenum target, GLint level,
}
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);
const GLint texComps = components_in_intformat(texImage->Format);
const GLint texRowStride = texImage->Width * texComps * sizeof(GLubyte);
const GLint texImgStride = texRowStride * texImage->Height;
GLboolean retain = GL_TRUE;

if (texFormat == GL_COLOR_INDEX) {
/* color index texture */
GLint img, row;
for (img = 0; img < depth; img++) {
const GLubyte *src = _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, ctx->ImageTransferState);
src += srcStride;
dst += dstStride;
}
}
}
else {
/* color texture */
GLint img, row;
/* XXX convolution */
for (img = 0; img < depth; img++) {
const GLubyte *src = _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,
ctx->ImageTransferState);
src += srcStride;
dst += dstStride;
}
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! */
}

fill_texture_image(ctx, 3, texImage->Format, texImage->Data,
width, height, depth, xoffset, yoffset, zoffset,
texRowStride, texImgStride,
format, type, pixels, &ctx->Unpack);

if (ctx->Driver.TexImage3D) {
(*ctx->Driver.TexImage3D)(ctx, target, level, texImage->Format,
GL_UNSIGNED_BYTE, texImage->Data,
@@ -2510,7 +2474,7 @@ _mesa_TexSubImage3D( GLenum target, GLint level,

/*
* Read an RGBA image from the frame buffer.
* This is used by glCopyTexSubImage[12]D().
* This is used by glCopyTex[Sub]Image[12]D().
* Input: ctx - the context
* x, y - lower left corner
* width, height - size of region to read
@@ -2531,8 +2495,6 @@ read_color_image( GLcontext *ctx, GLint x, GLint y,
(*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
ctx->Pixel.DriverReadBuffer );

/* XXX TODO we have to apply pixel transfer ops here! */

dst = image;
stride = width * 4 * sizeof(GLubyte);
for (i = 0; i < height; i++) {
@@ -2568,12 +2530,11 @@ _mesa_CopyTexImage1D( GLenum target, GLint level,

if (ctx->ImageTransferState || !ctx->Driver.CopyTexImage1D
|| !(*ctx->Driver.CopyTexImage1D)(ctx, target, level,
internalFormat, x, y, width, border))
{
internalFormat, x, y, width, border)) {
struct gl_pixelstore_attrib unpackSave;

/* get image from framebuffer */
GLubyte *image = read_color_image( ctx, x, y, width, 1 );
GLubyte *image = read_color_image( ctx, x, y, width, 1 );
if (!image) {
gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexImage1D" );
return;
@@ -2609,12 +2570,11 @@ _mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat,

if (ctx->ImageTransferState || !ctx->Driver.CopyTexImage2D
|| !(*ctx->Driver.CopyTexImage2D)(ctx, target, level,
internalFormat, x, y, width, height, border))
{
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 );
GLubyte *image = read_color_image( ctx, x, y, width, height );
if (!image) {
gl_error( ctx, GL_OUT_OF_MEMORY, "glCopyTexImage2D" );
return;

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