-/* $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
-/* 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 */
/* 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;
}
}
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;
}
}
}
+/* 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
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 */
}
}
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 );
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,
texImage->Data = NULL;
}
}
-
- /*gl_put_texobj_on_dirty_list( ctx, texUnit->CurrentD[1] );*/
}
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 */
}
}
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) {
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,
}
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,
/*
* 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
(*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++) {
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;
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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