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- /* $Id: image.c,v 3.15 1998/08/21 02:41:39 brianp Exp $ */
-
- /*
- * Mesa 3-D graphics library
- * Version: 3.0
- * Copyright (C) 1995-1998 Brian Paul
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
- /*
- * $Log: image.c,v $
- * Revision 3.15 1998/08/21 02:41:39 brianp
- * added gl_pack/unpack_polygon_stipple()
- *
- * Revision 3.14 1998/08/06 01:38:47 brianp
- * removed DEFARRAY/UNDEFARRAY from gl_pack_rgba_span()
- *
- * Revision 3.13 1998/08/01 04:53:23 brianp
- * bitmap unpacking didn't distinguish GL_COLOR_INDEX from GL_STENCIL_INDEX
- *
- * Revision 3.12 1998/07/26 17:24:18 brianp
- * replaced const with CONST because of IRIX cc warning
- *
- * Revision 3.11 1998/07/18 03:36:41 brianp
- * removed some debugging code
- *
- * Revision 3.10 1998/07/18 03:33:17 brianp
- * GL_INT type wasn't implemented
- *
- * Revision 3.9 1998/07/17 03:24:53 brianp
- * added gl_pack_rgba_span()
- *
- * Revision 3.8 1998/06/14 15:23:08 brianp
- * don't bit-flip bytes for GLubyte images
- *
- * Revision 3.7 1998/05/05 00:19:06 brianp
- * added GL_COLOR_INDEXxx_EXT cases to gl_components_in_format()
- *
- * Revision 3.6 1998/03/28 03:57:58 brianp
- * fixed minor IRIX cc warning
- *
- * Revision 3.5 1998/03/27 03:37:40 brianp
- * fixed G++ warnings
- *
- * Revision 3.4 1998/03/15 18:50:25 brianp
- * added GL_EXT_abgr extension
- *
- * Revision 3.3 1998/02/08 20:21:09 brianp
- * fixed bitmap unpacking error
- *
- * Revision 3.2 1998/02/01 22:29:09 brianp
- * added support for packed pixel formats
- *
- * Revision 3.1 1998/02/01 20:47:42 brianp
- * added GL_BGR and GL_BGRA pixel formats
- *
- * Revision 3.0 1998/01/31 20:54:19 brianp
- * initial rev
- *
- */
-
-
- #ifdef PC_HEADER
- #include "all.h"
- #else
- #include <assert.h>
- #include <stdlib.h>
- #include <string.h>
- #include "context.h"
- #include "image.h"
- #include "macros.h"
- #include "pixel.h"
- #include "types.h"
- #endif
-
-
-
- /*
- * Flip the 8 bits in each byte of the given array.
- */
- void gl_flip_bytes( GLubyte *p, GLuint n )
- {
- register GLuint i, a, b;
-
- for (i=0;i<n;i++) {
- b = (GLuint) p[i];
- a = ((b & 0x01) << 7) |
- ((b & 0x02) << 5) |
- ((b & 0x04) << 3) |
- ((b & 0x08) << 1) |
- ((b & 0x10) >> 1) |
- ((b & 0x20) >> 3) |
- ((b & 0x40) >> 5) |
- ((b & 0x80) >> 7);
- p[i] = (GLubyte) a;
- }
- }
-
-
- /*
- * Flip the order of the 2 bytes in each word in the given array.
- */
- void gl_swap2( GLushort *p, GLuint n )
- {
- register GLuint i;
-
- for (i=0;i<n;i++) {
- p[i] = (p[i] >> 8) | ((p[i] << 8) & 0xff00);
- }
- }
-
-
-
- /*
- * Flip the order of the 4 bytes in each word in the given array.
- */
- void gl_swap4( GLuint *p, GLuint n )
- {
- register GLuint i, a, b;
-
- for (i=0;i<n;i++) {
- b = p[i];
- a = (b >> 24)
- | ((b >> 8) & 0xff00)
- | ((b << 8) & 0xff0000)
- | ((b << 24) & 0xff000000);
- p[i] = a;
- }
- }
-
-
-
-
- /*
- * Return the size, in bytes, of the given GL datatype.
- * Return 0 if GL_BITMAP.
- * Return -1 if invalid type enum.
- */
- GLint gl_sizeof_type( GLenum type )
- {
- switch (type) {
- case GL_BITMAP:
- return 0;
- case GL_UNSIGNED_BYTE:
- return sizeof(GLubyte);
- case GL_BYTE:
- return sizeof(GLbyte);
- case GL_UNSIGNED_SHORT:
- return sizeof(GLushort);
- case GL_SHORT:
- return sizeof(GLshort);
- case GL_UNSIGNED_INT:
- return sizeof(GLuint);
- case GL_INT:
- return sizeof(GLint);
- case GL_FLOAT:
- return sizeof(GLfloat);
- default:
- return -1;
- }
- }
-
-
- /*
- * Same as gl_sizeof_packed_type() but we also accept the
- * packed pixel format datatypes.
- */
- GLint gl_sizeof_packed_type( GLenum type )
- {
- switch (type) {
- case GL_BITMAP:
- return 0;
- case GL_UNSIGNED_BYTE:
- return sizeof(GLubyte);
- case GL_BYTE:
- return sizeof(GLbyte);
- case GL_UNSIGNED_SHORT:
- return sizeof(GLushort);
- case GL_SHORT:
- return sizeof(GLshort);
- case GL_UNSIGNED_INT:
- return sizeof(GLuint);
- case GL_INT:
- return sizeof(GLint);
- case GL_FLOAT:
- return sizeof(GLfloat);
- case GL_UNSIGNED_BYTE_3_3_2:
- return sizeof(GLubyte);
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- return sizeof(GLubyte);
- case GL_UNSIGNED_SHORT_5_6_5:
- return sizeof(GLshort);
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- return sizeof(GLshort);
- case GL_UNSIGNED_SHORT_4_4_4_4:
- return sizeof(GLshort);
- case GL_UNSIGNED_SHORT_4_4_4_4_REV:
- return sizeof(GLshort);
- case GL_UNSIGNED_SHORT_5_5_5_1:
- return sizeof(GLshort);
- case GL_UNSIGNED_SHORT_1_5_5_5_REV:
- return sizeof(GLshort);
- case GL_UNSIGNED_INT_8_8_8_8:
- return sizeof(GLuint);
- case GL_UNSIGNED_INT_8_8_8_8_REV:
- return sizeof(GLuint);
- case GL_UNSIGNED_INT_10_10_10_2:
- return sizeof(GLuint);
- case GL_UNSIGNED_INT_2_10_10_10_REV:
- return sizeof(GLuint);
- default:
- return -1;
- }
- }
-
-
-
- /*
- * Return the number of components in a GL enum pixel type.
- * Return -1 if bad format.
- */
- GLint gl_components_in_format( GLenum format )
- {
- switch (format) {
- 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:
- case GL_STENCIL_INDEX:
- case GL_DEPTH_COMPONENT:
- case GL_RED:
- case GL_GREEN:
- case GL_BLUE:
- case GL_ALPHA:
- case GL_LUMINANCE:
- return 1;
- case GL_LUMINANCE_ALPHA:
- return 2;
- case GL_RGB:
- return 3;
- case GL_RGBA:
- return 4;
- case GL_BGR:
- return 3;
- case GL_BGRA:
- return 4;
- case GL_ABGR_EXT:
- return 4;
- /* SPECIAL CASES: */
- case GL_UNSIGNED_BYTE_3_3_2:
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- case GL_UNSIGNED_SHORT_5_6_5:
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- case GL_UNSIGNED_SHORT_4_4_4_4:
- case GL_UNSIGNED_SHORT_4_4_4_4_REV:
- case GL_UNSIGNED_SHORT_5_5_5_1:
- case GL_UNSIGNED_SHORT_1_5_5_5_REV:
- case GL_UNSIGNED_INT_8_8_8_8:
- case GL_UNSIGNED_INT_8_8_8_8_REV:
- case GL_UNSIGNED_INT_10_10_10_2:
- case GL_UNSIGNED_INT_2_10_10_10_REV:
- return 1;
- default:
- return -1;
- }
- }
-
-
- /*
- * Return the address of a pixel in an image (actually a volume).
- * Pixel unpacking/packing parameters are observed according to 'packing'.
- * Input: image - start of image data
- * width, height - size of image
- * format - image format
- * type - pixel component type
- * packing - GL_TRUE = use packing params
- * GL_FALSE = use unpacking params.
- * img - which image in the volume (0 for 2-D images)
- * row, column - location of pixel in the image
- * Return: address of pixel at (image,row,column) in image or NULL if error.
- */
- GLvoid *gl_pixel_addr_in_image( const struct gl_pixelstore_attrib *packing,
- const GLvoid *image, GLsizei width,
- GLsizei height, GLenum format, GLenum type,
- GLint img, GLint row, GLint column )
- {
- GLint bytes_per_comp; /* bytes per component */
- GLint comp_per_pixel; /* components per pixel */
- GLint comps_per_row; /* components per row */
- GLint pixels_per_row; /* pixels per row */
- GLint bytes_per_image;
- GLint rows_per_image;
- GLint alignment; /* 1, 2 or 4 */
- GLint skiprows;
- GLint skippixels;
- GLint skipimages; /* for 3-D */
- GLubyte *pixel_addr;
-
- /* Compute bytes per component */
- bytes_per_comp = gl_sizeof_packed_type( type );
- if (bytes_per_comp<0) {
- return NULL;
- }
-
- /* Compute number of components per pixel */
- comp_per_pixel = gl_components_in_format( format );
- if (comp_per_pixel<0 && type != GL_BITMAP) {
- return NULL;
- }
-
- alignment = packing->Alignment;
- if (packing->RowLength > 0) {
- pixels_per_row = packing->RowLength;
- }
- else {
- pixels_per_row = width;
- }
- if (packing->ImageHeight>0) {
- rows_per_image = packing->ImageHeight;
- }
- else {
- rows_per_image = height;
- }
- skiprows = packing->SkipRows;
- skippixels = packing->SkipPixels;
- skipimages = packing->SkipImages;
-
- if (type==GL_BITMAP) {
- /* BITMAP data */
- GLint bytes_per_row;
-
- bytes_per_row = alignment
- * CEILING( comp_per_pixel*pixels_per_row, 8*alignment );
-
- bytes_per_image = bytes_per_row * rows_per_image;
-
- pixel_addr = (GLubyte *) image
- + (skipimages + img) * bytes_per_image
- + (skiprows + row) * bytes_per_row
- + (skippixels + column) / 8;
- }
- else {
- /* Non-BITMAP data */
-
- if (bytes_per_comp>=alignment) {
- comps_per_row = comp_per_pixel * pixels_per_row;
- }
- else {
- GLint bytes_per_row = bytes_per_comp * comp_per_pixel
- * pixels_per_row;
-
- comps_per_row = alignment / bytes_per_comp
- * CEILING( bytes_per_row, alignment );
- }
-
- bytes_per_image = bytes_per_comp * comps_per_row * rows_per_image;
-
- /* Copy/unpack pixel data to buffer */
- pixel_addr = (GLubyte *) image
- + (skipimages + img) * bytes_per_image
- + (skiprows + row) * bytes_per_comp * comps_per_row
- + (skippixels + column) * bytes_per_comp * comp_per_pixel;
- }
-
- return (GLvoid *) pixel_addr;
- }
-
-
-
- /*
- * Allocate a new gl_image. All fields are initialized to zero.
- */
- static struct gl_image *alloc_image( void )
- {
- return (struct gl_image *) calloc(sizeof(struct gl_image), 1);
- }
-
-
-
- /*
- * Allocate a new gl_image with the error flag set.
- */
- static struct gl_image *alloc_error_image( GLint width, GLint height,
- GLint depth, GLenum format,
- GLenum type )
- {
- struct gl_image *image = alloc_image();
- if (image) {
- image->Width = width;
- image->Height = height;
- image->Depth = depth;
- image->Format = format;
- image->Type = type;
- image->ErrorFlag = GL_TRUE;
- }
- return image;
- }
-
-
-
- /*
- * Free a gl_image.
- */
- void gl_free_image( struct gl_image *image )
- {
- if (image->Data) {
- free(image->Data);
- }
- free(image);
- }
-
-
-
- /*
- * Do error checking on an image. If there's an error, register it and
- * return GL_TRUE, else return GL_FALSE.
- */
- GLboolean gl_image_error_test( GLcontext *ctx, const struct gl_image *image,
- const char *msg )
- {
- assert(image);
- if (image->Width <= 0 || image->Height <= 0 || image->Depth <= 0) {
- gl_error( ctx, GL_INVALID_VALUE, msg );
- return GL_TRUE;
- }
- else {
- return GL_FALSE;
- }
- }
-
-
-
- /*
- * Unpack a depth-buffer image storing values as GLshort, GLuint, or GLfloats.
- * Input: type - datatype of src depth image
- * Return pointer to a new gl_image structure.
- *
- * Notes: if the source image type is GLushort then the gl_image will
- * also store GLushorts. If the src image type is GLuint then the gl_image
- * will also store GLuints. For all other src image types the gl_image
- * will store GLfloats. The integer cases can later be optimized.
- */
- static struct gl_image *unpack_depth_image( GLcontext *ctx, GLenum type,
- GLint width, GLint height,
- const GLvoid *pixels )
- {
- struct gl_image *image;
- GLfloat *fDst;
- GLushort *sDst;
- GLuint *iDst;
- GLint i, j;
-
- image = alloc_image();
- if (image) {
- image->Width = width;
- image->Height = height;
- image->Depth = 1;
- image->Components = 1;
- image->Format = GL_DEPTH_COMPONENT;
- if (type==GL_UNSIGNED_SHORT) {
- image->Type = GL_UNSIGNED_SHORT;
- image->Data = malloc( width * height * sizeof(GLushort));
- }
- else if (type==GL_UNSIGNED_INT) {
- image->Type = GL_UNSIGNED_INT;
- image->Data = malloc( width * height * sizeof(GLuint));
- }
- else {
- image->Type = GL_FLOAT;
- image->Data = malloc( width * height * sizeof(GLfloat));
- }
- image->RefCount = 0;
- if (!image->Data)
- return image;
- }
- else {
- return NULL;
- }
-
- fDst = (GLfloat *) image->Data;
- sDst = (GLushort *) image->Data;
- iDst = (GLuint *) image->Data;
-
- for (i=0;i<height;i++) {
- GLvoid *src = gl_pixel_addr_in_image( &ctx->Unpack, pixels,
- width, height,
- GL_DEPTH_COMPONENT, type,
- 0, i, 0 );
- if (!src) {
- return image;
- }
-
- switch (type) {
- case GL_BYTE:
- assert(image->Type == GL_FLOAT);
- for (j=0; j<width; j++) {
- *fDst++ = BYTE_TO_FLOAT(((GLbyte*)src)[j]);
- }
- break;
- case GL_UNSIGNED_BYTE:
- assert(image->Type == GL_FLOAT);
- for (j=0; j<width; j++) {
- *fDst++ = UBYTE_TO_FLOAT(((GLubyte*)src)[j]);
- }
- break;
- case GL_UNSIGNED_SHORT:
- assert(image->Type == GL_UNSIGNED_SHORT);
- MEMCPY( sDst, src, width * sizeof(GLushort) );
- if (ctx->Unpack.SwapBytes) {
- gl_swap2( sDst, width );
- }
- sDst += width;
- break;
- case GL_SHORT:
- assert(image->Type == GL_FLOAT);
- if (ctx->Unpack.SwapBytes) {
- for (j=0;j<width;j++) {
- GLshort value = ((GLshort*)src)[j];
- value = ((value >> 8) & 0xff) | ((value&0xff) << 8);
- *fDst++ = SHORT_TO_FLOAT(value);
- }
- }
- else {
- for (j=0;j<width;j++) {
- *fDst++ = SHORT_TO_FLOAT(((GLshort*)src)[j]);
- }
- }
- break;
- case GL_INT:
- assert(image->Type == GL_FLOAT);
- if (ctx->Unpack.SwapBytes) {
- for (j=0;j<width;j++) {
- GLint value = ((GLint*)src)[j];
- value = ((value >> 24) & 0x000000ff) |
- ((value >> 8) & 0x0000ff00) |
- ((value << 8) & 0x00ff0000) |
- ((value << 24) & 0xff000000);
- *fDst++ = INT_TO_FLOAT(value);
- }
- }
- else {
- for (j=0;j<width;j++) {
- *fDst++ = INT_TO_FLOAT(((GLint*)src)[j]);
- }
- }
- iDst += width;
- break;
- case GL_UNSIGNED_INT:
- assert(image->Type == GL_UNSIGNED_INT);
- MEMCPY( iDst, src, width * sizeof(GLuint) );
- if (ctx->Unpack.SwapBytes) {
- gl_swap4( iDst, width );
- }
- iDst += width;
- break;
- case GL_FLOAT:
- assert(image->Type == GL_FLOAT);
- MEMCPY( fDst, src, width * sizeof(GLfloat) );
- if (ctx->Unpack.SwapBytes) {
- gl_swap4( (GLuint*) fDst, width );
- }
- fDst += width;
- break;
- default:
- gl_problem(ctx, "unpack_depth_image type" );
- return image;
- }
- }
-
- return image;
- }
-
-
-
- /*
- * Unpack a stencil image. Store as GLubytes in a gl_image structure.
- * Return: pointer to new gl_image structure.
- */
- static struct gl_image *unpack_stencil_image( GLcontext *ctx, GLenum type,
- GLint width, GLint height,
- const GLvoid *pixels )
- {
- struct gl_image *image;
- GLubyte *dst;
- GLint i, j;
-
- assert(sizeof(GLstencil) == sizeof(GLubyte));
-
- image = alloc_image();
- if (image) {
- image->Width = width;
- image->Height = height;
- image->Depth = 1;
- image->Components = 1;
- image->Format = GL_STENCIL_INDEX;
- image->Type = GL_UNSIGNED_BYTE;
- image->Data = malloc( width * height * sizeof(GLubyte));
- image->RefCount = 0;
- if (!image->Data)
- return image;
- }
- else {
- return NULL;
- }
-
- dst = (GLubyte *) image->Data;
-
- for (i=0;i<height;i++) {
- GLvoid *src = gl_pixel_addr_in_image( &ctx->Unpack, pixels,
- width, height,
- GL_STENCIL_INDEX, type,
- 0, i, 0 );
- if (!src) {
- return image;
- }
-
- switch (type) {
- case GL_UNSIGNED_BYTE:
- case GL_BYTE:
- MEMCPY( dst, src, width * sizeof(GLubyte) );
- dst += width * sizeof(GLubyte);
- break;
- case GL_UNSIGNED_SHORT:
- case GL_SHORT:
- if (ctx->Unpack.SwapBytes) {
- /* grab upper byte */
- for (j=0; j < width; j++) {
- *dst++ = (((GLushort*)src)[j] & 0xff00) >> 8;
- }
- }
- else {
- for (j=0; j < width; j++) {
- *dst++ = (((GLushort*)src)[j]) & 0xff;
- }
- }
- break;
- case GL_INT:
- if (ctx->Unpack.SwapBytes) {
- /* grab upper byte */
- for (j=0; j < width; j++) {
- *dst++ = (((GLuint*)src)[j] & 0xff000000) >> 8;
- }
- }
- else {
- for (j=0; j < width; j++) {
- *dst++ = (((GLuint*)src)[j]) & 0xff;
- }
- }
- break;
- case GL_UNSIGNED_INT:
- if (ctx->Unpack.SwapBytes) {
- /* grab upper byte */
- for (j=0; j < width; j++) {
- *dst++ = (((GLuint*)src)[j] & 0xff000000) >> 8;
- }
- }
- else {
- for (j=0; j < width; j++) {
- *dst++ = (((GLuint*)src)[j]) & 0xff;
- }
- }
- break;
- case GL_FLOAT:
- if (ctx->Unpack.SwapBytes) {
- for (j=0; j < width; j++) {
- GLfloat fvalue;
- GLint value = ((GLuint*)src)[j];
- value = ((value & 0xff000000) >> 24)
- | ((value & 0x00ff0000) >> 8)
- | ((value & 0x0000ff00) << 8)
- | ((value & 0x000000ff) << 24);
- fvalue = *((GLfloat*) &value);
- *dst++ = ((GLint) fvalue) & 0xff;
- }
- }
- else {
- for (j=0; j < width; j++) {
- GLfloat fvalue = ((GLfloat *)src)[j];
- *dst++ = ((GLint) fvalue) & 0xff;
- }
- }
- break;
- default:
- gl_problem(ctx, "unpack_stencil_image type" );
- return image;
- }
- }
-
- return image;
- }
-
-
-
- /*
- * Unpack a bitmap, return a new gl_image struct.
- */
- static struct gl_image *unpack_bitmap( GLcontext *ctx, GLenum format,
- GLint width, GLint height,
- const GLvoid *pixels )
- {
- struct gl_image *image;
- GLint bytes, i, width_in_bytes;
- GLubyte *buffer, *dst;
-
- assert(format == GL_COLOR_INDEX || format == GL_STENCIL_INDEX);
-
- /* Alloc dest storage */
- bytes = ((width+7)/8 * height);
- if (bytes>0 && pixels!=NULL) {
- buffer = (GLubyte *) malloc( bytes );
- if (!buffer) {
- return NULL;
- }
- /* Copy/unpack pixel data to buffer */
- width_in_bytes = CEILING( width, 8 );
- dst = buffer;
- for (i=0; i<height; i++) {
- GLvoid *src = gl_pixel_addr_in_image( &ctx->Unpack, pixels,
- width, height,
- GL_COLOR_INDEX, GL_BITMAP,
- 0, i, 0 );
- if (!src) {
- free(buffer);
- return NULL;
- }
- MEMCPY( dst, src, width_in_bytes );
- dst += width_in_bytes;
- }
- /* Bit flipping */
- if (ctx->Unpack.LsbFirst) {
- gl_flip_bytes( buffer, bytes );
- }
- }
- else {
- /* a 'null' bitmap */
- buffer = NULL;
- }
-
- image = alloc_image();
- if (image) {
- image->Width = width;
- image->Height = height;
- image->Depth = 1;
- image->Components = 0;
- image->Format = format;
- image->Type = GL_BITMAP;
- image->Data = buffer;
- image->RefCount = 0;
- }
- else {
- free( buffer );
- return NULL;
- }
-
- return image;
- }
-
-
-
- /*
- * Unpack a 32x32 pixel polygon stipple from user memory using the
- * current pixel unpack settings.
- */
- void gl_unpack_polygon_stipple( const GLcontext *ctx,
- const GLubyte *pattern, GLuint dest[32] )
- {
- GLint i;
- for (i = 0; i < 32; i++) {
- GLubyte *src = (GLubyte *) gl_pixel_addr_in_image( &ctx->Unpack, pattern,
- 32, 32, GL_COLOR_INDEX, GL_BITMAP, 0, i, 0 );
- dest[i] = (src[0] << 24)
- | (src[1] << 16)
- | (src[2] << 8)
- | (src[3] );
- }
-
- /* Bit flipping within each byte */
- if (ctx->Unpack.LsbFirst) {
- gl_flip_bytes( (GLubyte *) dest, 32 * 4 );
- }
- }
-
-
-
- /*
- * Pack polygon stipple into user memory given current pixel packing
- * settings.
- */
- void gl_pack_polygon_stipple( const GLcontext *ctx,
- const GLuint pattern[32],
- GLubyte *dest )
- {
- GLint i;
- for (i = 0; i < 32; i++) {
- GLubyte *dst = (GLubyte *) gl_pixel_addr_in_image( &ctx->Pack, dest,
- 32, 32, GL_COLOR_INDEX, GL_BITMAP, 0, i, 0 );
- dst[0] = (pattern[i] >> 24) & 0xff;
- dst[1] = (pattern[i] >> 16) & 0xff;
- dst[2] = (pattern[i] >> 8) & 0xff;
- dst[3] = (pattern[i] ) & 0xff;
-
- /* Bit flipping within each byte */
- if (ctx->Pack.LsbFirst) {
- gl_flip_bytes( (GLubyte *) dst, 4 );
- }
- }
- }
-
-
-
- /*
- * Unpack an RGBA or CI image and store it as unsigned bytes
- */
- static struct gl_image *unpack_ubyte_image( GLcontext *ctx,
- GLint width, GLint height,
- GLint depth,
- GLenum format,
- const GLvoid *pixels )
- {
- struct gl_image *image;
- GLint width_in_bytes;
- GLint components;
- GLubyte *buffer, *dst;
- GLint i, d;
-
- components = gl_components_in_format( format );
-
- width_in_bytes = width * components * sizeof(GLubyte);
- buffer = (GLubyte *) malloc( height * width_in_bytes * depth );
- if (!buffer) {
- return NULL;
- }
-
- /* Copy/unpack pixel data to buffer */
- dst = buffer;
- for (d=0; d<depth; d++ ) {
- for (i=0;i<height;i++) {
- GLubyte *src = (GLubyte *) gl_pixel_addr_in_image( &ctx->Unpack,
- pixels, width, height, format, GL_UNSIGNED_BYTE,
- d, i, 0 );
- if (!src) {
- free(buffer);
- return NULL;
- }
- MEMCPY( dst, src, width_in_bytes );
- dst += width_in_bytes;
- }
- }
-
- if (format == GL_BGR) {
- /* swap order of every ubyte triplet from BGR to RGB */
- for (i=0; i<width*height; i++) {
- GLubyte b = buffer[i*3+0];
- GLubyte r = buffer[i*3+2];
- buffer[i*3+0] = r;
- buffer[i*3+2] = b;
- }
- }
- else if (format == GL_BGRA) {
- /* swap order of every ubyte quadruplet from BGRA to RGBA */
- for (i=0; i<width*height; i++) {
- GLubyte b = buffer[i*4+0];
- GLubyte r = buffer[i*4+2];
- buffer[i*4+0] = r;
- buffer[i*4+2] = b;
- }
- }
- else if (format == GL_ABGR_EXT) {
- /* swap order of every ubyte quadruplet from ABGR to RGBA */
- for (i=0; i<width*height; i++) {
- GLubyte a = buffer[i*4+0];
- GLubyte b = buffer[i*4+1];
- GLubyte g = buffer[i*4+2];
- GLubyte r = buffer[i*4+3];
- buffer[i*4+0] = r;
- buffer[i*4+1] = g;
- buffer[i*4+2] = b;
- buffer[i*4+3] = a;
- }
- }
-
-
- image = alloc_image();
- if (image) {
- image->Width = width;
- image->Height = height;
- image->Depth = depth;
- image->Components = components;
- if (format == GL_BGR)
- image->Format = GL_RGB;
- else if (format == GL_BGRA)
- image->Format = GL_RGBA;
- else if (format == GL_ABGR_EXT)
- image->Format = GL_RGBA;
- else
- image->Format = format;
- image->Type = GL_UNSIGNED_BYTE;
- image->Data = buffer;
- image->RefCount = 0;
- }
- else {
- free( buffer );
- }
-
- return image;
- }
-
-
-
- /*
- * Unpack an RGBA image storing image as GLfloats
- */
- static struct gl_image *unpack_float_image( GLcontext *ctx,
- GLint width, GLint height,
- GLint depth,
- GLenum format, GLenum type,
- const GLvoid *pixels )
- {
- struct gl_image *image;
- GLfloat *dst;
- GLint elems_per_row;
- GLint components;
- GLint i, j, d;
- GLboolean normalize;
-
- assert(type != GL_BITMAP);
-
- components = gl_components_in_format( format );
-
- elems_per_row = width * components;
-
- image = alloc_image();
- if (image) {
- image->Width = width;
- image->Height = height;
- image->Depth = depth;
- image->Components = components;
- if (format == GL_BGR)
- image->Format = GL_RGB;
- else if (format == GL_BGRA)
- image->Format = GL_RGBA;
- else if (format == GL_ABGR_EXT)
- image->Format = GL_RGBA;
- else
- image->Format = format;
- image->Type = GL_FLOAT;
- image->Data = malloc( elems_per_row * height * depth * sizeof(GLfloat));
- image->RefCount = 0;
- if (!image->Data)
- return image;
- }
- else {
- return NULL;
- }
-
- normalize = (format != GL_COLOR_INDEX) && (format != GL_STENCIL_INDEX);
-
- dst = (GLfloat *) image->Data;
-
- for (d=0; d<depth; d++) {
- for (i=0;i<height;i++) {
- GLvoid *src = gl_pixel_addr_in_image( &ctx->Unpack, pixels,
- width, height,
- format, type,
- d, i, 0 );
- if (!src) {
- return image;
- }
-
- switch (type) {
- case GL_UNSIGNED_BYTE:
- {
- GLubyte *ubsrc = (GLubyte *) src;
- if (normalize) {
- for (j=0;j<elems_per_row;j++) {
- *dst++ = UBYTE_TO_FLOAT(ubsrc[j]);
- }
- }
- else {
- for (j=0;j<elems_per_row;j++) {
- *dst++ = (GLfloat) ubsrc[j];
- }
- }
- }
- break;
- case GL_BYTE:
- if (normalize) {
- for (j=0;j<elems_per_row;j++) {
- *dst++ = BYTE_TO_FLOAT(((GLbyte*)src)[j]);
- }
- }
- else {
- for (j=0;j<elems_per_row;j++) {
- *dst++ = (GLfloat) ((GLbyte*)src)[j];
- }
- }
- break;
- case GL_UNSIGNED_SHORT:
- if (ctx->Unpack.SwapBytes) {
- for (j=0;j<elems_per_row;j++) {
- GLushort value = ((GLushort*)src)[j];
- value = ((value >> 8) & 0xff) | ((value&0xff) << 8);
- if (normalize) {
- *dst++ = USHORT_TO_FLOAT(value);
- }
- else {
- *dst++ = (GLfloat) value;
- }
- }
- }
- else {
- if (normalize) {
- for (j=0;j<elems_per_row;j++) {
- *dst++ = USHORT_TO_FLOAT(((GLushort*)src)[j]);
- }
- }
- else {
- for (j=0;j<elems_per_row;j++) {
- *dst++ = (GLfloat) ((GLushort*)src)[j];
- }
- }
- }
- break;
- case GL_SHORT:
- if (ctx->Unpack.SwapBytes) {
- for (j=0;j<elems_per_row;j++) {
- GLshort value = ((GLshort*)src)[j];
- value = ((value >> 8) & 0xff) | ((value&0xff) << 8);
- if (normalize) {
- *dst++ = SHORT_TO_FLOAT(value);
- }
- else {
- *dst++ = (GLfloat) value;
- }
- }
- }
- else {
- if (normalize) {
- for (j=0;j<elems_per_row;j++) {
- *dst++ = SHORT_TO_FLOAT(((GLshort*)src)[j]);
- }
- }
- else {
- for (j=0;j<elems_per_row;j++) {
- *dst++ = (GLfloat) ((GLshort*)src)[j];
- }
- }
- }
- break;
- case GL_UNSIGNED_INT:
- if (ctx->Unpack.SwapBytes) {
- GLuint value;
- for (j=0;j<elems_per_row;j++) {
- value = ((GLuint*)src)[j];
- value = ((value & 0xff000000) >> 24)
- | ((value & 0x00ff0000) >> 8)
- | ((value & 0x0000ff00) << 8)
- | ((value & 0x000000ff) << 24);
- if (normalize) {
- *dst++ = UINT_TO_FLOAT(value);
- }
- else {
- *dst++ = (GLfloat) value;
- }
- }
- }
- else {
- if (normalize) {
- for (j=0;j<elems_per_row;j++) {
- *dst++ = UINT_TO_FLOAT(((GLuint*)src)[j]);
- }
- }
- else {
- for (j=0;j<elems_per_row;j++) {
- *dst++ = (GLfloat) ((GLuint*)src)[j];
- }
- }
- }
- break;
- case GL_INT:
- if (ctx->Unpack.SwapBytes) {
- GLint value;
- for (j=0;j<elems_per_row;j++) {
- value = ((GLint*)src)[j];
- value = ((value & 0xff000000) >> 24)
- | ((value & 0x00ff0000) >> 8)
- | ((value & 0x0000ff00) << 8)
- | ((value & 0x000000ff) << 24);
- if (normalize) {
- *dst++ = INT_TO_FLOAT(value);
- }
- else {
- *dst++ = (GLfloat) value;
- }
- }
- }
- else {
- if (normalize) {
- for (j=0;j<elems_per_row;j++) {
- *dst++ = INT_TO_FLOAT(((GLint*)src)[j]);
- }
- }
- else {
- for (j=0;j<elems_per_row;j++) {
- *dst++ = (GLfloat) ((GLint*)src)[j];
- }
- }
- }
- break;
- case GL_FLOAT:
- if (ctx->Unpack.SwapBytes) {
- GLint value;
- for (j=0;j<elems_per_row;j++) {
- value = ((GLuint*)src)[j];
- value = ((value & 0xff000000) >> 24)
- | ((value & 0x00ff0000) >> 8)
- | ((value & 0x0000ff00) << 8)
- | ((value & 0x000000ff) << 24);
- *dst++ = *((GLfloat*) &value);
- }
- }
- else {
- MEMCPY( dst, src, elems_per_row*sizeof(GLfloat) );
- dst += elems_per_row;
- }
- break;
- case GL_UNSIGNED_BYTE_3_3_2:
- {
- GLubyte *ubsrc = (GLubyte *) src;
- for (j=0;j<elems_per_row;j++) {
- GLubyte p = ubsrc[j];
- *dst++ = ((p >> 5) ) * (1.0F / 7.0F); /* red */
- *dst++ = ((p >> 2) & 0x7) * (1.0F / 7.0F); /* green */
- *dst++ = ((p ) & 0x3) * (1.0F / 3.0F); /* blue */
- }
- }
- break;
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- {
- GLubyte *ubsrc = (GLubyte *) src;
- for (j=0;j<elems_per_row;j++) {
- GLubyte p = ubsrc[j];
- *dst++ = ((p ) & 0x7) * (1.0F / 7.0F); /* red */
- *dst++ = ((p >> 3) & 0x7) * (1.0F / 7.0F); /* green */
- *dst++ = ((p >> 6) ) * (1.0F / 3.0F); /* blue */
- }
- }
- break;
- case GL_UNSIGNED_SHORT_5_6_5:
- {
- GLushort *ussrc = (GLushort *) src;
- for (j=0;j<elems_per_row;j++) {
- GLushort p = ussrc[j];
- *dst++ = ((p >> 11) ) * (1.0F / 31.0F); /* red */
- *dst++ = ((p >> 5) & 0x3f) * (1.0F / 63.0F); /* green */
- *dst++ = ((p ) & 0x1f) * (1.0F / 31.0F); /* blue */
- }
- }
- break;
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- {
- GLushort *ussrc = (GLushort *) src;
- for (j=0;j<elems_per_row;j++) {
- GLushort p = ussrc[j];
- *dst++ = ((p ) & 0x1f) * (1.0F / 31.0F); /* red */
- *dst++ = ((p >> 5) & 0x3f) * (1.0F / 63.0F); /* green */
- *dst++ = ((p >> 11) ) * (1.0F / 31.0F); /* blue */
- }
- }
- break;
- case GL_UNSIGNED_SHORT_4_4_4_4:
- {
- GLushort *ussrc = (GLushort *) src;
- for (j=0;j<elems_per_row;j++) {
- GLushort p = ussrc[j];
- *dst++ = ((p >> 12) ) * (1.0F / 15.0F); /* red */
- *dst++ = ((p >> 8) & 0xf) * (1.0F / 15.0F); /* green */
- *dst++ = ((p >> 4) & 0xf) * (1.0F / 15.0F); /* blue */
- *dst++ = ((p ) & 0xf) * (1.0F / 15.0F); /* alpha */
- }
- }
- break;
- case GL_UNSIGNED_SHORT_4_4_4_4_REV:
- {
- GLushort *ussrc = (GLushort *) src;
- for (j=0;j<elems_per_row;j++) {
- GLushort p = ussrc[j];
- *dst++ = ((p ) & 0xf) * (1.0F / 15.0F); /* red */
- *dst++ = ((p >> 4) & 0xf) * (1.0F / 15.0F); /* green */
- *dst++ = ((p >> 8) & 0xf) * (1.0F / 15.0F); /* blue */
- *dst++ = ((p >> 12) ) * (1.0F / 15.0F); /* alpha */
- }
- }
- break;
- case GL_UNSIGNED_SHORT_5_5_5_1:
- {
- GLushort *ussrc = (GLushort *) src;
- for (j=0;j<elems_per_row;j++) {
- GLushort p = ussrc[j];
- *dst++ = ((p >> 11) ) * (1.0F / 31.0F); /* red */
- *dst++ = ((p >> 6) & 0x1f) * (1.0F / 31.0F); /* green */
- *dst++ = ((p >> 1) & 0x1f) * (1.0F / 31.0F); /* blue */
- *dst++ = ((p ) & 0x1) * (1.0F / 1.0F); /* alpha */
- }
- }
- break;
- case GL_UNSIGNED_SHORT_1_5_5_5_REV:
- {
- GLushort *ussrc = (GLushort *) src;
- for (j=0;j<elems_per_row;j++) {
- GLushort p = ussrc[j];
- *dst++ = ((p ) & 0x1f) * (1.0F / 31.0F); /* red */
- *dst++ = ((p >> 5) & 0x1f) * (1.0F / 31.0F); /* green */
- *dst++ = ((p >> 10) & 0x1f) * (1.0F / 31.0F); /* blue */
- *dst++ = ((p >> 15) ) * (1.0F / 1.0F); /* alpha */
- }
- }
- break;
- case GL_UNSIGNED_INT_8_8_8_8:
- {
- GLuint *uisrc = (GLuint *) src;
- for (j=0;j<elems_per_row;j++) {
- GLuint p = uisrc[j];
- *dst++ = ((p >> 24) ) * (1.0F / 255.0F); /* red */
- *dst++ = ((p >> 16) & 0xff) * (1.0F / 255.0F); /* green */
- *dst++ = ((p >> 8) & 0xff) * (1.0F / 255.0F); /* blue */
- *dst++ = ((p ) & 0xff) * (1.0F / 1.0F); /* alpha */
- }
- }
- break;
- case GL_UNSIGNED_INT_8_8_8_8_REV:
- {
- GLuint *uisrc = (GLuint *) src;
- for (j=0;j<elems_per_row;j++) {
- GLuint p = uisrc[j];
- *dst++ = ((p ) & 0xff) * (1.0F / 1.0F); /* red */
- *dst++ = ((p >> 8) & 0xff) * (1.0F / 255.0F); /* green */
- *dst++ = ((p >> 16) & 0xff) * (1.0F / 255.0F); /* blue */
- *dst++ = ((p >> 24) ) * (1.0F / 255.0F); /* alpha */
- }
- }
- break;
- case GL_UNSIGNED_INT_10_10_10_2:
- {
- GLuint *uisrc = (GLuint *) src;
- for (j=0;j<elems_per_row;j++) {
- GLuint p = uisrc[j];
- *dst++ = ((p >> 22) ) * (1.0F / 1023.0F); /* red */
- *dst++ = ((p >> 12) & 0x3ff) * (1.0F / 1023.0F); /* green */
- *dst++ = ((p >> 2) & 0x3ff) * (1.0F / 1023.0F); /* blue */
- *dst++ = ((p ) & 0x3 ) * (1.0F / 3.0F); /* alpha */
- }
- }
- break;
- case GL_UNSIGNED_INT_2_10_10_10_REV:
- {
- GLuint *uisrc = (GLuint *) src;
- for (j=0;j<elems_per_row;j++) {
- GLuint p = uisrc[j];
- *dst++ = ((p ) & 0x3ff) * (1.0F / 1023.0F); /* red */
- *dst++ = ((p >> 10) & 0x3ff) * (1.0F / 1023.0F); /* green */
- *dst++ = ((p >> 20) & 0x3ff) * (1.0F / 1023.0F); /* blue */
- *dst++ = ((p >> 30) ) * (1.0F / 3.0F); /* alpha */
- }
- }
- break;
- default:
- gl_problem(ctx, "unpack_float_image type" );
- return image;
- }
- }
- }
-
- if (format == GL_BGR) {
- /* swap order of every float triplet from BGR to RGBA */
- GLfloat *buffer = (GLfloat *) image->Data;
- for (i=0; i<width*height*depth; i++) {
- GLfloat b = buffer[i*3+0];
- GLfloat r = buffer[i*3+2];
- buffer[i*3+0] = r;
- buffer[i*3+2] = b;
- }
- }
- else if (format == GL_BGRA) {
- /* swap order of every float quadruplet from BGRA to RGBA */
- GLfloat *buffer = (GLfloat *) image->Data;
- for (i=0; i<width*height*depth; i++) {
- GLfloat b = buffer[i*4+0];
- GLfloat r = buffer[i*4+2];
- buffer[i*4+0] = r;
- buffer[i*4+2] = b;
- }
- }
- else if (format == GL_ABGR_EXT) {
- /* swap order of every float quadruplet from ABGR to RGBA */
- GLfloat *buffer = (GLfloat *) image->Data;
- for (i=0; i<width*height*depth; i++) {
- GLfloat a = buffer[i*4+0];
- GLfloat b = buffer[i*4+1];
- GLfloat g = buffer[i*4+2];
- GLfloat r = buffer[i*4+3];
- buffer[i*4+0] = r;
- buffer[i*4+1] = g;
- buffer[i*4+2] = b;
- buffer[i*4+3] = a;
- }
- }
-
- return image;
- }
-
-
-
- /*
- * Unpack a bitmap image, making a new gl_image.
- */
- struct gl_image *gl_unpack_bitmap( GLcontext *ctx,
- GLsizei width, GLsizei height,
- const GLubyte *bitmap )
- {
- return gl_unpack_image( ctx, width, height,
- GL_COLOR_INDEX, GL_BITMAP, bitmap );
- }
-
-
-
- /*
- * Unpack a 2-D image from user-supplied address, returning a pointer to
- * a new gl_image struct.
- *
- * Input: width, height - size in pixels
- * format - format of incoming pixel data, ignored if
- * srcType BITMAP.
- * type - GL_UNSIGNED_BYTE .. GL_FLOAT
- * pixels - pointer to unpacked image in client memory space.
- */
- struct gl_image *gl_unpack_image( GLcontext *ctx,
- GLint width, GLint height,
- GLenum format, GLenum type,
- const GLvoid *pixels )
- {
- return gl_unpack_image3D( ctx, width, height, 1,
- format, type, pixels );
- }
-
-
-
- /*
- * Unpack a 1, 2 or 3-D image from user-supplied address, returning a
- * pointer to a new gl_image struct.
- * This function is always called by a higher-level unpack function such
- * as gl_unpack_texsubimage() or gl_unpack_bitmap().
- *
- * Input: width, height, depth - size in pixels
- * format - format of incoming pixel data
- * type - GL_UNSIGNED_BYTE .. GL_FLOAT
- * pixels - pointer to unpacked image.
- */
- struct gl_image *gl_unpack_image3D( GLcontext *ctx,
- GLint width, GLint height, GLint depth,
- GLenum format, GLenum type,
- const GLvoid *pixels )
- {
- if (width <= 0 || height <= 0 || depth <= 0) {
- return alloc_error_image(width, height, depth, format, type);
- }
-
- if (type==GL_BITMAP) {
- if (format != GL_COLOR_INDEX && format != GL_STENCIL_INDEX) {
- return alloc_error_image(width, height, depth, format, type);
- }
- else {
- return unpack_bitmap( ctx, format, width, height, pixels );
- }
- }
- else if (format==GL_DEPTH_COMPONENT) {
- /* TODO: pack as GLdepth values (GLushort or GLuint) */
- return unpack_depth_image( ctx, type, width, height, pixels);
- }
- else if (format==GL_STENCIL_INDEX) {
- /* TODO: pack as GLstencil (GLubyte or GLushort) */
- return unpack_stencil_image( ctx, type, width, height, pixels);
- }
- else if (type==GL_UNSIGNED_BYTE) {
- /* upack, convert to GLubytes */
- return unpack_ubyte_image( ctx, width, height, depth, format, pixels );
- }
- else {
- /* upack, convert to floats */
- return unpack_float_image( ctx, width, height, depth,
- format, type, pixels );
- }
-
- /* never get here */
- /*return NULL;*/
- }
-
-
- /*
- * Apply pixel-transfer operations (scale, bias, mapping) to a single row
- * of a gl_image. Put resulting color components into result array.
- */
- void gl_scale_bias_map_image_data( const GLcontext *ctx,
- const struct gl_image *image,
- GLint row, GLubyte result[] )
- {
- GLint start, i;
-
- assert(ctx);
- assert(image);
- assert(result);
- assert(row >= 0);
-
- start = row * image->Width * image->Components;
-
- for (i=0; i < image->Width; i++) {
- GLint pos = start+i;
- GLfloat red, green, blue, alpha;
- if (image->Type == GL_UNSIGNED_BYTE) {
- const GLubyte *data = (GLubyte *) image->Data;
- switch (image->Format) {
- case GL_RED:
- red = data[pos] * (1.0F/255.0F);
- green = 0;
- blue = 0;
- alpha = 0;
- break;
- case GL_RGB:
- red = data[pos*3+0] * (1.0F/255.0F);
- green = data[pos*3+1] * (1.0F/255.0F);
- blue = data[pos*3+2] * (1.0F/255.0F);
- alpha = 0;
- break;
- default:
- gl_problem(ctx, "bad image format in gl_scale...image_data");
- return;
- }
- }
- else if (image->Type == GL_FLOAT) {
- const GLubyte *data = (GLubyte *) image->Data;
- switch (image->Format) {
- case GL_RED:
- red = data[pos];
- green = 0;
- blue = 0;
- alpha = 0;
- break;
- case GL_RGB:
- red = data[pos*3+0];
- green = data[pos*3+1];
- blue = data[pos*3+2];
- alpha = 0;
- break;
- default:
- gl_problem(ctx, "bad image format in gl_scale...image_data");
- return;
- }
- }
- else {
- gl_problem(ctx, "Bad image type in gl_scale_...image_data");
- return;
- }
-
- assert(red >= 0.0 && red <= 1.0);
- assert(green >= 0.0 && green <= 1.0);
- assert(blue >= 0.0 && blue <= 1.0);
- assert(alpha >= 0.0 && alpha <= 1.0);
-
- /*
- if (scale or bias) {
-
-
- }
- if (mapping) {
-
- }
- */
-
- result[i*4+0] = (GLubyte) (red * 255.0);
- result[i*4+1] = (GLubyte) (green * 255.0);
- result[i*4+2] = (GLubyte) (blue * 255.0);
- result[i*4+3] = (GLubyte) (alpha * 255.0);
- }
- }
-
-
-
- /*
- * Pack the given RGBA span into client memory at 'dest' address
- * in the given pixel format and type. Apply all enabled pixel
- * transfer and packing parameters. This is used by glReadPixels (NOT YET)
- * and glGetTexImage?D()
- */
- void gl_pack_rgba_span( const GLcontext *ctx,
- GLuint n, CONST GLubyte rgba[][4],
- GLenum format, GLenum type, GLvoid *destination)
- {
- /* Test for optimized case first */
- if (!ctx->Pixel.ScaleOrBiasRGBA && !ctx->Pixel.MapColorFlag &&
- format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
- /* simple case */
- MEMCPY( destination, rgba, n * 4 * sizeof(GLubyte) );
- }
- else {
- GLfloat red[MAX_WIDTH], green[MAX_WIDTH], blue[MAX_WIDTH];
- GLfloat alpha[MAX_WIDTH], luminance[MAX_WIDTH];
- GLfloat rscale = 1.0F / 255.0F;
- GLfloat gscale = 1.0F / 255.0F;
- GLfloat bscale = 1.0F / 255.0F;
- GLfloat ascale = 1.0F / 255.0F;
- GLuint i;
-
- assert( n < MAX_WIDTH );
-
- /* convert color components to floating point */
- for (i=0;i<n;i++) {
- red[i] = rgba[i][RCOMP] * rscale;
- green[i] = rgba[i][GCOMP] * gscale;
- blue[i] = rgba[i][BCOMP] * bscale;
- alpha[i] = rgba[i][ACOMP] * ascale;
- }
-
- /*
- * Apply scale, bias and mappings if enabled.
- */
- if (ctx->Pixel.ScaleOrBiasRGBA) {
- gl_scale_and_bias_color( ctx, n, red, green, blue, alpha );
- }
- if (ctx->Pixel.MapColorFlag) {
- gl_map_color( ctx, n, red, green, blue, alpha );
- }
- if (format==GL_LUMINANCE || format==GL_LUMINANCE_ALPHA) {
- for (i=0;i<n;i++) {
- GLfloat sum = red[i] + green[i] + blue[i];
- luminance[i] = CLAMP( sum, 0.0F, 1.0F );
- }
- }
-
- /*
- * Pack/store the pixels. Ugh! Lots of cases!!!
- */
- switch (type) {
- case GL_UNSIGNED_BYTE:
- {
- GLubyte *dst = (GLubyte *) destination;
- switch (format) {
- case GL_RED:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UBYTE(red[i]);
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UBYTE(green[i]);
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UBYTE(blue[i]);
- break;
- case GL_LUMINANCE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UBYTE(luminance[i]);
- break;
- case GL_LUMINANCE_ALPHA:
- for (i=0;i<n;i++) {
- dst[i*2+0] = FLOAT_TO_UBYTE(luminance[i]);
- dst[i*2+1] = FLOAT_TO_UBYTE(alpha[i]);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_UBYTE(red[i]);
- dst[i*3+1] = FLOAT_TO_UBYTE(green[i]);
- dst[i*3+2] = FLOAT_TO_UBYTE(blue[i]);
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_UBYTE(red[i]);
- dst[i*4+1] = FLOAT_TO_UBYTE(green[i]);
- dst[i*4+2] = FLOAT_TO_UBYTE(blue[i]);
- dst[i*4+3] = FLOAT_TO_UBYTE(alpha[i]);
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_UBYTE(blue[i]);
- dst[i*3+1] = FLOAT_TO_UBYTE(green[i]);
- dst[i*3+2] = FLOAT_TO_UBYTE(red[i]);
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_UBYTE(blue[i]);
- dst[i*4+1] = FLOAT_TO_UBYTE(green[i]);
- dst[i*4+2] = FLOAT_TO_UBYTE(red[i]);
- dst[i*4+3] = FLOAT_TO_UBYTE(alpha[i]);
- }
- break;
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_UBYTE(alpha[i]);
- dst[i*4+1] = FLOAT_TO_UBYTE(blue[i]);
- dst[i*4+2] = FLOAT_TO_UBYTE(green[i]);
- dst[i*4+3] = FLOAT_TO_UBYTE(red[i]);
- }
- break;
- default:
- gl_problem(ctx, "bad format in gl_pack_rgba_span\n");
- }
- }
- break;
- case GL_BYTE:
- {
- GLbyte *dst = (GLbyte *) destination;
- switch (format) {
- case GL_RED:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_BYTE(red[i]);
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_BYTE(green[i]);
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_BYTE(blue[i]);
- break;
- case GL_LUMINANCE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_BYTE(luminance[i]);
- break;
- case GL_LUMINANCE_ALPHA:
- for (i=0;i<n;i++) {
- dst[i*2+0] = FLOAT_TO_BYTE(luminance[i]);
- dst[i*2+1] = FLOAT_TO_BYTE(alpha[i]);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_BYTE(red[i]);
- dst[i*3+1] = FLOAT_TO_BYTE(green[i]);
- dst[i*3+2] = FLOAT_TO_BYTE(blue[i]);
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_BYTE(red[i]);
- dst[i*4+1] = FLOAT_TO_BYTE(green[i]);
- dst[i*4+2] = FLOAT_TO_BYTE(blue[i]);
- dst[i*4+3] = FLOAT_TO_BYTE(alpha[i]);
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_BYTE(blue[i]);
- dst[i*3+1] = FLOAT_TO_BYTE(green[i]);
- dst[i*3+2] = FLOAT_TO_BYTE(red[i]);
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_BYTE(blue[i]);
- dst[i*4+1] = FLOAT_TO_BYTE(green[i]);
- dst[i*4+2] = FLOAT_TO_BYTE(red[i]);
- dst[i*4+3] = FLOAT_TO_BYTE(alpha[i]);
- }
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_BYTE(alpha[i]);
- dst[i*4+1] = FLOAT_TO_BYTE(blue[i]);
- dst[i*4+2] = FLOAT_TO_BYTE(green[i]);
- dst[i*4+3] = FLOAT_TO_BYTE(red[i]);
- }
- break;
- default:
- gl_problem(ctx, "bad format in gl_pack_rgba_span\n");
- }
- }
- break;
- case GL_UNSIGNED_SHORT:
- {
- GLushort *dst = (GLushort *) destination;
- switch (format) {
- case GL_RED:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_USHORT(red[i]);
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_USHORT(green[i]);
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_USHORT(blue[i]);
- break;
- case GL_LUMINANCE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_USHORT(luminance[i]);
- break;
- case GL_LUMINANCE_ALPHA:
- for (i=0;i<n;i++) {
- dst[i*2+0] = FLOAT_TO_USHORT(luminance[i]);
- dst[i*2+1] = FLOAT_TO_USHORT(alpha[i]);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_USHORT(red[i]);
- dst[i*3+1] = FLOAT_TO_USHORT(green[i]);
- dst[i*3+2] = FLOAT_TO_USHORT(blue[i]);
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_USHORT(red[i]);
- dst[i*4+1] = FLOAT_TO_USHORT(green[i]);
- dst[i*4+2] = FLOAT_TO_USHORT(blue[i]);
- dst[i*4+3] = FLOAT_TO_USHORT(alpha[i]);
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_USHORT(blue[i]);
- dst[i*3+1] = FLOAT_TO_USHORT(green[i]);
- dst[i*3+2] = FLOAT_TO_USHORT(red[i]);
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_USHORT(blue[i]);
- dst[i*4+1] = FLOAT_TO_USHORT(green[i]);
- dst[i*4+2] = FLOAT_TO_USHORT(red[i]);
- dst[i*4+3] = FLOAT_TO_USHORT(alpha[i]);
- }
- break;
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_USHORT(alpha[i]);
- dst[i*4+1] = FLOAT_TO_USHORT(blue[i]);
- dst[i*4+2] = FLOAT_TO_USHORT(green[i]);
- dst[i*4+3] = FLOAT_TO_USHORT(red[i]);
- }
- break;
- default:
- gl_problem(ctx, "bad format in gl_pack_rgba_span\n");
- }
- if (ctx->Pack.SwapBytes) {
- gl_swap2( (GLushort *) dst, n*n );
- }
- }
- break;
- case GL_SHORT:
- {
- GLshort *dst = (GLshort *) destination;
- switch (format) {
- case GL_RED:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_SHORT(red[i]);
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_SHORT(green[i]);
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_SHORT(blue[i]);
- break;
- case GL_LUMINANCE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_SHORT(luminance[i]);
- break;
- case GL_LUMINANCE_ALPHA:
- for (i=0;i<n;i++) {
- dst[i*2+0] = FLOAT_TO_SHORT(luminance[i]);
- dst[i*2+1] = FLOAT_TO_SHORT(alpha[i]);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_SHORT(red[i]);
- dst[i*3+1] = FLOAT_TO_SHORT(green[i]);
- dst[i*3+2] = FLOAT_TO_SHORT(blue[i]);
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_SHORT(red[i]);
- dst[i*4+1] = FLOAT_TO_SHORT(green[i]);
- dst[i*4+2] = FLOAT_TO_SHORT(blue[i]);
- dst[i*4+3] = FLOAT_TO_SHORT(alpha[i]);
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_SHORT(blue[i]);
- dst[i*3+1] = FLOAT_TO_SHORT(green[i]);
- dst[i*3+2] = FLOAT_TO_SHORT(red[i]);
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_SHORT(blue[i]);
- dst[i*4+1] = FLOAT_TO_SHORT(green[i]);
- dst[i*4+2] = FLOAT_TO_SHORT(red[i]);
- dst[i*4+3] = FLOAT_TO_SHORT(alpha[i]);
- }
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_SHORT(alpha[i]);
- dst[i*4+1] = FLOAT_TO_SHORT(blue[i]);
- dst[i*4+2] = FLOAT_TO_SHORT(green[i]);
- dst[i*4+3] = FLOAT_TO_SHORT(red[i]);
- }
- break;
- default:
- gl_problem(ctx, "bad format in gl_pack_rgba_span\n");
- }
- if (ctx->Pack.SwapBytes) {
- gl_swap2( (GLushort *) dst, n*n );
- }
- }
- break;
- case GL_UNSIGNED_INT:
- {
- GLuint *dst = (GLuint *) destination;
- switch (format) {
- case GL_RED:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UINT(red[i]);
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UINT(green[i]);
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UINT(blue[i]);
- break;
- case GL_LUMINANCE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UINT(luminance[i]);
- break;
- case GL_LUMINANCE_ALPHA:
- for (i=0;i<n;i++) {
- dst[i*2+0] = FLOAT_TO_UINT(luminance[i]);
- dst[i*2+1] = FLOAT_TO_UINT(alpha[i]);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_UINT(red[i]);
- dst[i*3+1] = FLOAT_TO_UINT(green[i]);
- dst[i*3+2] = FLOAT_TO_UINT(blue[i]);
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_UINT(red[i]);
- dst[i*4+1] = FLOAT_TO_UINT(green[i]);
- dst[i*4+2] = FLOAT_TO_UINT(blue[i]);
- dst[i*4+3] = FLOAT_TO_UINT(alpha[i]);
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_UINT(blue[i]);
- dst[i*3+1] = FLOAT_TO_UINT(green[i]);
- dst[i*3+2] = FLOAT_TO_UINT(red[i]);
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_UINT(blue[i]);
- dst[i*4+1] = FLOAT_TO_UINT(green[i]);
- dst[i*4+2] = FLOAT_TO_UINT(red[i]);
- dst[i*4+3] = FLOAT_TO_UINT(alpha[i]);
- }
- break;
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_UINT(alpha[i]);
- dst[i*4+1] = FLOAT_TO_UINT(blue[i]);
- dst[i*4+2] = FLOAT_TO_UINT(green[i]);
- dst[i*4+3] = FLOAT_TO_UINT(red[i]);
- }
- break;
- default:
- gl_problem(ctx, "bad format in gl_pack_rgba_span\n");
- }
- if (ctx->Pack.SwapBytes) {
- gl_swap4( (GLuint *) dst, n*n );
- }
- }
- break;
- case GL_INT:
- {
- GLint *dst = (GLint *) destination;
- switch (format) {
- case GL_RED:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_INT(red[i]);
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_INT(green[i]);
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_INT(blue[i]);
- break;
- case GL_LUMINANCE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_INT(luminance[i]);
- break;
- case GL_LUMINANCE_ALPHA:
- for (i=0;i<n;i++) {
- dst[i*2+0] = FLOAT_TO_INT(luminance[i]);
- dst[i*2+1] = FLOAT_TO_INT(alpha[i]);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_INT(red[i]);
- dst[i*3+1] = FLOAT_TO_INT(green[i]);
- dst[i*3+2] = FLOAT_TO_INT(blue[i]);
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_INT(red[i]);
- dst[i*4+1] = FLOAT_TO_INT(green[i]);
- dst[i*4+2] = FLOAT_TO_INT(blue[i]);
- dst[i*4+3] = FLOAT_TO_INT(alpha[i]);
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_INT(blue[i]);
- dst[i*3+1] = FLOAT_TO_INT(green[i]);
- dst[i*3+2] = FLOAT_TO_INT(red[i]);
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_INT(blue[i]);
- dst[i*4+1] = FLOAT_TO_INT(green[i]);
- dst[i*4+2] = FLOAT_TO_INT(red[i]);
- dst[i*4+3] = FLOAT_TO_INT(alpha[i]);
- }
- break;
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_INT(alpha[i]);
- dst[i*4+1] = FLOAT_TO_INT(blue[i]);
- dst[i*4+2] = FLOAT_TO_INT(green[i]);
- dst[i*4+3] = FLOAT_TO_INT(red[i]);
- }
- break;
- default:
- gl_problem(ctx, "bad format in gl_pack_rgba_span\n");
- }
- if (ctx->Pack.SwapBytes) {
- gl_swap4( (GLuint *) dst, n*n );
- }
- }
- break;
- case GL_FLOAT:
- {
- GLfloat *dst = (GLfloat *) destination;
- switch (format) {
- case GL_RED:
- for (i=0;i<n;i++)
- dst[i] = red[i];
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = green[i];
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = blue[i];
- break;
- case GL_LUMINANCE:
- for (i=0;i<n;i++)
- dst[i] = luminance[i];
- break;
- case GL_LUMINANCE_ALPHA:
- for (i=0;i<n;i++) {
- dst[i*2+0] = luminance[i];
- dst[i*2+1] = alpha[i];
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = red[i];
- dst[i*3+1] = green[i];
- dst[i*3+2] = blue[i];
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = red[i];
- dst[i*4+1] = green[i];
- dst[i*4+2] = blue[i];
- dst[i*4+3] = alpha[i];
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = blue[i];
- dst[i*3+1] = green[i];
- dst[i*3+2] = red[i];
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = blue[i];
- dst[i*4+1] = green[i];
- dst[i*4+2] = red[i];
- dst[i*4+3] = alpha[i];
- }
- break;
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = alpha[i];
- dst[i*4+1] = blue[i];
- dst[i*4+2] = green[i];
- dst[i*4+3] = red[i];
- }
- break;
- default:
- gl_problem(ctx, "bad format in gl_pack_rgba_span\n");
- }
- if (ctx->Pack.SwapBytes) {
- gl_swap4( (GLuint *) dst, n*n );
- }
- }
- break;
- case GL_UNSIGNED_BYTE_3_3_2:
- if (format == GL_RGB) {
- GLubyte *dst = (GLubyte *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (red[i] * 7.0F)) << 5)
- | (((GLint) (green[i] * 7.0F)) << 2)
- | (((GLint) (blue[i] * 3.0F)) );
- }
- }
- break;
- case GL_UNSIGNED_BYTE_2_3_3_REV:
- if (format == GL_RGB) {
- GLubyte *dst = (GLubyte *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (red[i] * 7.0F)) )
- | (((GLint) (green[i] * 7.0F)) << 3)
- | (((GLint) (blue[i] * 3.0F)) << 5);
- }
- }
- break;
- case GL_UNSIGNED_SHORT_5_6_5:
- if (format == GL_RGB) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (red[i] * 31.0F)) << 11)
- | (((GLint) (green[i] * 63.0F)) << 5)
- | (((GLint) (blue[i] * 31.0F)) );
- }
- }
- break;
- case GL_UNSIGNED_SHORT_5_6_5_REV:
- if (format == GL_RGB) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (red[i] * 31.0F)) )
- | (((GLint) (green[i] * 63.0F)) << 5)
- | (((GLint) (blue[i] * 31.0F)) << 11);
- }
- }
- break;
- case GL_UNSIGNED_SHORT_4_4_4_4:
- if (format == GL_RGB) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (red[i] * 15.0F)) << 12)
- | (((GLint) (green[i] * 15.0F)) << 8)
- | (((GLint) (blue[i] * 15.0F)) << 4)
- | (((GLint) (alpha[i] * 15.0F)) );
- }
- }
- break;
- case GL_UNSIGNED_SHORT_4_4_4_4_REV:
- if (format == GL_RGB) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (red[i] * 15.0F)) )
- | (((GLint) (green[i] * 15.0F)) << 4)
- | (((GLint) (blue[i] * 15.0F)) << 8)
- | (((GLint) (alpha[i] * 15.0F)) << 12);
- }
- }
- break;
- case GL_UNSIGNED_SHORT_5_5_5_1:
- if (format == GL_RGB) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (red[i] * 31.0F)) << 11)
- | (((GLint) (green[i] * 31.0F)) << 6)
- | (((GLint) (blue[i] * 31.0F)) << 1)
- | (((GLint) (alpha[i] * 1.0F)) );
- }
- }
- break;
- case GL_UNSIGNED_SHORT_1_5_5_5_REV:
- if (format == GL_RGB) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (red[i] * 31.0F)) )
- | (((GLint) (green[i] * 31.0F)) << 5)
- | (((GLint) (blue[i] * 31.0F)) << 10)
- | (((GLint) (alpha[i] * 1.0F)) << 15);
- }
- }
- break;
- case GL_UNSIGNED_INT_8_8_8_8:
- if (format == GL_RGBA) {
- GLuint *dst = (GLuint *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (red[i] * 255.0F)) << 24)
- | (((GLint) (green[i] * 255.0F)) << 16)
- | (((GLint) (blue[i] * 255.0F)) << 8)
- | (((GLint) (alpha[i] * 255.0F)) );
- }
- }
- else if (format == GL_BGRA) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (blue[i] * 255.0F)) << 24)
- | (((GLint) (green[i] * 255.0F)) << 16)
- | (((GLint) (red[i] * 255.0F)) << 8)
- | (((GLint) (alpha[i] * 255.0F)) );
- }
- }
- else if (format == GL_ABGR_EXT) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (alpha[i] * 255.0F)) << 24)
- | (((GLint) (blue[i] * 255.0F)) << 16)
- | (((GLint) (green[i] * 255.0F)) << 8)
- | (((GLint) (red[i] * 255.0F)) );
- }
- }
- break;
- case GL_UNSIGNED_INT_8_8_8_8_REV:
- if (format == GL_RGBA) {
- GLuint *dst = (GLuint *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (red[i] * 255.0F)) )
- | (((GLint) (green[i] * 255.0F)) << 8)
- | (((GLint) (blue[i] * 255.0F)) << 16)
- | (((GLint) (alpha[i] * 255.0F)) << 24);
- }
- }
- else if (format == GL_BGRA) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (blue[i] * 255.0F)) )
- | (((GLint) (green[i] * 255.0F)) << 8)
- | (((GLint) (red[i] * 255.0F)) << 16)
- | (((GLint) (alpha[i] * 255.0F)) << 24);
- }
- }
- else if (format == GL_ABGR_EXT) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (alpha[i] * 255.0F)) )
- | (((GLint) (blue[i] * 255.0F)) << 8)
- | (((GLint) (green[i] * 255.0F)) << 16)
- | (((GLint) (red[i] * 255.0F)) << 24);
- }
- }
- break;
- case GL_UNSIGNED_INT_10_10_10_2:
- if (format == GL_RGBA) {
- GLuint *dst = (GLuint *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (red[i] * 1023.0F)) << 22)
- | (((GLint) (green[i] * 1023.0F)) << 12)
- | (((GLint) (blue[i] * 1023.0F)) << 2)
- | (((GLint) (alpha[i] * 3.0F)) );
- }
- }
- else if (format == GL_BGRA) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (blue[i] * 1023.0F)) << 22)
- | (((GLint) (green[i] * 1023.0F)) << 12)
- | (((GLint) (red[i] * 1023.0F)) << 2)
- | (((GLint) (alpha[i] * 3.0F)) );
- }
- }
- else if (format == GL_ABGR_EXT) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (alpha[i] * 1023.0F)) << 22)
- | (((GLint) (blue[i] * 1023.0F)) << 12)
- | (((GLint) (green[i] * 1023.0F)) << 2)
- | (((GLint) (red[i] * 3.0F)) );
- }
- }
- break;
- case GL_UNSIGNED_INT_2_10_10_10_REV:
- if (format == GL_RGBA) {
- GLuint *dst = (GLuint *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (red[i] * 1023.0F)) )
- | (((GLint) (green[i] * 1023.0F)) << 10)
- | (((GLint) (blue[i] * 1023.0F)) << 20)
- | (((GLint) (alpha[i] * 3.0F)) << 30);
- }
- }
- else if (format == GL_BGRA) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (blue[i] * 1023.0F)) )
- | (((GLint) (green[i] * 1023.0F)) << 10)
- | (((GLint) (red[i] * 1023.0F)) << 20)
- | (((GLint) (alpha[i] * 3.0F)) << 30);
- }
- }
- else if (format == GL_ABGR_EXT) {
- GLushort *dst = (GLushort *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLint) (alpha[i] * 1023.0F)) )
- | (((GLint) (blue[i] * 1023.0F)) << 10)
- | (((GLint) (green[i] * 1023.0F)) << 20)
- | (((GLint) (red[i] * 3.0F)) << 30);
- }
- }
- break;
- default:
- gl_problem( ctx, "bad type in gl_pack_rgba_span" );
- }
- }
- }
-