-/* $Id: image.c,v 1.35 2000/06/30 22:12:00 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.3
- *
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
- *
+ * Version: 6.3
+ *
+ * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
+ *
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
- *
+ *
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
- *
+ *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
*/
-#ifdef PC_HEADER
-#include "all.h"
-#else
+/**
+ * \file image.c
+ * Image handling.
+ */
+
+
#include "glheader.h"
+#include "bufferobj.h"
+#include "colormac.h"
#include "context.h"
#include "image.h"
-#include "imaging.h"
+#include "imports.h"
+#include "histogram.h"
#include "macros.h"
-#include "mem.h"
-#include "mmath.h"
#include "pixel.h"
-#include "types.h"
-#endif
-
+#include "mtypes.h"
-/*
- * These are the image packing parameters for Mesa's internal images.
- * That is, _mesa_unpack_image() returns image data in this format.
- * When we execute image commands (glDrawPixels, glTexImage, etc)
- * from within display lists we have to be sure to set the current
- * unpacking params to these values!
- */
-const struct gl_pixelstore_attrib _mesa_native_packing = {
- 1, /* Alignment */
- 0, /* RowLength */
- 0, /* SkipPixels */
- 0, /* SkipRows */
- 0, /* ImageHeight */
- 0, /* SkipImages */
- GL_FALSE, /* SwapBytes */
- GL_FALSE /* LsbFirst */
-};
-
+/** Compute ceiling of integer quotient of A divided by B. */
+#define CEILING( A, B ) ( (A) % (B) == 0 ? (A)/(B) : (A)/(B)+1 )
-/*
+/**
* Flip the 8 bits in each byte of the given array.
+ *
+ * \param p array.
+ * \param n number of bytes.
+ *
+ * \todo try this trick to flip bytes someday:
+ * \code
+ * v = ((v & 0x55555555) << 1) | ((v >> 1) & 0x55555555);
+ * v = ((v & 0x33333333) << 2) | ((v >> 2) & 0x33333333);
+ * v = ((v & 0x0f0f0f0f) << 4) | ((v >> 4) & 0x0f0f0f0f);
+ * \endcode
*/
static void
flip_bytes( GLubyte *p, GLuint n )
register GLuint i, a, b;
for (i=0;i<n;i++) {
- b = (GLuint) p[i];
+ b = (GLuint) p[i]; /* words are often faster than bytes */
a = ((b & 0x01) << 7) |
((b & 0x02) << 5) |
((b & 0x04) << 3) |
}
-/*
+/**
* Flip the order of the 2 bytes in each word in the given array.
+ *
+ * \param p array.
+ * \param n number of words.
*/
void
_mesa_swap2( GLushort *p, GLuint n )
}
-
-
-/*
- * Return the size, in bytes, of the given GL datatype.
- * Return 0 if GL_BITMAP.
- * Return -1 if invalid type enum.
+/**
+ * Get the size of a GL data type.
+ *
+ * \param type GL data type.
+ *
+ * \return the size, in bytes, of the given data type, 0 if a GL_BITMAP, or -1
+ * if an invalid type enum.
*/
GLint _mesa_sizeof_type( GLenum type )
{
return sizeof(GLint);
case GL_FLOAT:
return sizeof(GLfloat);
+ case GL_HALF_FLOAT_ARB:
+ return sizeof(GLhalfARB);
default:
return -1;
}
}
-/*
- * Same as _mesa_sizeof_packed_type() but we also accept the
- * packed pixel format datatypes.
+/**
+ * Same as _mesa_sizeof_type() but also accepting the packed pixel
+ * format data types.
*/
GLint _mesa_sizeof_packed_type( GLenum type )
{
return sizeof(GLuint);
case GL_INT:
return sizeof(GLint);
+ case GL_HALF_FLOAT_ARB:
+ return sizeof(GLhalfARB);
case GL_FLOAT:
return sizeof(GLfloat);
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
return sizeof(GLubyte);
case GL_UNSIGNED_SHORT_5_6_5:
- return sizeof(GLshort);
+ return sizeof(GLushort);
case GL_UNSIGNED_SHORT_5_6_5_REV:
- return sizeof(GLshort);
+ return sizeof(GLushort);
case GL_UNSIGNED_SHORT_4_4_4_4:
- return sizeof(GLshort);
+ return sizeof(GLushort);
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
- return sizeof(GLshort);
+ return sizeof(GLushort);
case GL_UNSIGNED_SHORT_5_5_5_1:
- return sizeof(GLshort);
+ return sizeof(GLushort);
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
- return sizeof(GLshort);
+ return sizeof(GLushort);
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_2_10_10_10_REV:
return sizeof(GLuint);
+ case GL_UNSIGNED_SHORT_8_8_MESA:
+ case GL_UNSIGNED_SHORT_8_8_REV_MESA:
+ return sizeof(GLushort);
default:
return -1;
}
}
-
-/*
- * Return the number of components in a GL enum pixel type.
- * Return -1 if bad format.
+/**
+ * Get the number of components in a pixel format.
+ *
+ * \param format pixel format.
+ *
+ * \return the number of components in the given format, or -1 if a bad format.
*/
GLint _mesa_components_in_format( GLenum format )
{
return 4;
case GL_ABGR_EXT:
return 4;
+ case GL_YCBCR_MESA:
+ return 2;
default:
return -1;
}
}
-/*
- * Return bytes per pixel for given format and type
- * Return -1 if bad format or type.
+/**
+ * Get the bytes per pixel of pixel format type pair.
+ *
+ * \param format pixel format.
+ * \param type pixel type.
+ *
+ * \return bytes per pixel, or -1 if a bad format or type was given.
*/
GLint _mesa_bytes_per_pixel( GLenum format, GLenum type )
{
return comps * sizeof(GLint);
case GL_FLOAT:
return comps * sizeof(GLfloat);
+ case GL_HALF_FLOAT_ARB:
+ return comps * sizeof(GLhalfARB);
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
if (format == GL_RGB || format == GL_BGR)
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
if (format == GL_RGB || format == GL_BGR)
- return sizeof(GLshort);
+ return sizeof(GLushort);
else
return -1; /* error */
case GL_UNSIGNED_SHORT_4_4_4_4:
return sizeof(GLuint);
else
return -1;
+ case GL_UNSIGNED_SHORT_8_8_MESA:
+ case GL_UNSIGNED_SHORT_8_8_REV_MESA:
+ if (format == GL_YCBCR_MESA)
+ return sizeof(GLushort);
+ else
+ return -1;
default:
return -1;
}
}
-/*
- * Test if the given pixel format and type are legal.
- * Return GL_TRUE for legal, GL_FALSE for illegal.
+/**
+ * Test for a legal pixel format and type.
+ *
+ * \param format pixel format.
+ * \param type pixel type.
+ *
+ * \return GL_TRUE if the given pixel format and type are legal, or GL_FALSE
+ * otherwise.
*/
GLboolean
-_mesa_is_legal_format_and_type( GLenum format, GLenum type )
+_mesa_is_legal_format_and_type( GLcontext *ctx, GLenum format, GLenum type )
{
switch (format) {
case GL_COLOR_INDEX:
case GL_UNSIGNED_INT:
case GL_FLOAT:
return GL_TRUE;
+ case GL_HALF_FLOAT_ARB:
+ return ctx->Extensions.ARB_half_float_pixel;
default:
return GL_FALSE;
}
case GL_GREEN:
case GL_BLUE:
case GL_ALPHA:
+#if 0 /* not legal! see table 3.6 of the 1.5 spec */
case GL_INTENSITY:
+#endif
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
case GL_DEPTH_COMPONENT:
- case GL_BGR:
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_UNSIGNED_INT:
case GL_FLOAT:
return GL_TRUE;
+ case GL_HALF_FLOAT_ARB:
+ return ctx->Extensions.ARB_half_float_pixel;
default:
return GL_FALSE;
}
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
return GL_TRUE;
+ case GL_HALF_FLOAT_ARB:
+ return ctx->Extensions.ARB_half_float_pixel;
+ default:
+ return GL_FALSE;
+ }
+ case GL_BGR:
+ switch (type) {
+ case GL_BYTE:
+ case GL_UNSIGNED_BYTE:
+ case GL_SHORT:
+ case GL_UNSIGNED_SHORT:
+ case GL_INT:
+ case GL_UNSIGNED_INT:
+ case GL_FLOAT:
+ return GL_TRUE;
+ case GL_HALF_FLOAT_ARB:
+ return ctx->Extensions.ARB_half_float_pixel;
default:
return GL_FALSE;
}
case GL_UNSIGNED_INT_10_10_10_2:
case GL_UNSIGNED_INT_2_10_10_10_REV:
return GL_TRUE;
+ case GL_HALF_FLOAT_ARB:
+ return ctx->Extensions.ARB_half_float_pixel;
default:
return GL_FALSE;
}
+ case GL_YCBCR_MESA:
+ if (type == GL_UNSIGNED_SHORT_8_8_MESA ||
+ type == GL_UNSIGNED_SHORT_8_8_REV_MESA)
+ return GL_TRUE;
+ else
+ return GL_FALSE;
default:
; /* fall-through */
}
}
-
-/*
- * 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 - the pixelstore attributes
- * img - which image in the volume (0 for 1D or 2D images)
- * row, column - location of pixel in the image
- * Return: address of pixel at (image,row,column) in image or NULL if error.
+/**
+ * Return the address of a specific pixel in an image (1D, 2D or 3D).
+ *
+ * Pixel unpacking/packing parameters are observed according to \p packing.
+ *
+ * \param dimensions either 1, 2 or 3 to indicate dimensionality of image
+ * \param image starting address of image data
+ * \param width the image width
+ * \param height theimage height
+ * \param format the pixel format
+ * \param type the pixel data type
+ * \param packing the pixelstore attributes
+ * \param img which image in the volume (0 for 1D or 2D images)
+ * \param row row of pixel in the image (0 for 1D images)
+ * \param column column of pixel in the image
+ *
+ * \return address of pixel on success, or NULL on error.
+ *
+ * \sa gl_pixelstore_attrib.
*/
GLvoid *
-_mesa_image_address( const struct gl_pixelstore_attrib *packing,
- const GLvoid *image, GLsizei width,
- GLsizei height, GLenum format, GLenum type,
+_mesa_image_address( GLuint dimensions,
+ const struct gl_pixelstore_attrib *packing,
+ const GLvoid *image,
+ GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
GLint img, GLint row, GLint column )
{
GLint alignment; /* 1, 2 or 4 */
GLint skipimages; /* for 3-D volume images */
GLubyte *pixel_addr;
+ ASSERT(dimensions >= 1 && dimensions <= 3);
+
alignment = packing->Alignment;
if (packing->RowLength > 0) {
pixels_per_row = packing->RowLength;
else {
rows_per_image = height;
}
- skiprows = packing->SkipRows;
+
skippixels = packing->SkipPixels;
- skipimages = packing->SkipImages;
+ /* Note: SKIP_ROWS _is_ used for 1D images */
+ skiprows = packing->SkipRows;
+ /* Note: SKIP_IMAGES is only used for 3D images */
+ skipimages = (dimensions == 3) ? packing->SkipImages : 0;
- if (type==GL_BITMAP) {
+ if (type == GL_BITMAP) {
/* BITMAP data */
GLint comp_per_pixel; /* components per pixel */
GLint bytes_per_comp; /* bytes per component */
/* Compute bytes per component */
bytes_per_comp = _mesa_sizeof_packed_type( type );
- if (bytes_per_comp<0) {
+ if (bytes_per_comp < 0) {
return NULL;
}
/* Compute number of components per pixel */
comp_per_pixel = _mesa_components_in_format( format );
- if (comp_per_pixel<0 && type != GL_BITMAP) {
+ if (comp_per_pixel < 0) {
return NULL;
}
else {
/* Non-BITMAP data */
GLint bytes_per_pixel, bytes_per_row, remainder, bytes_per_image;
+ GLint topOfImage;
bytes_per_pixel = _mesa_bytes_per_pixel( format, type );
bytes_per_image = bytes_per_row * rows_per_image;
+ if (packing->Invert) {
+ /* set pixel_addr to the last row */
+ topOfImage = bytes_per_row * (height - 1);
+ bytes_per_row = -bytes_per_row;
+ }
+ else {
+ topOfImage = 0;
+ }
+
/* compute final pixel address */
pixel_addr = (GLubyte *) image
+ (skipimages + img) * bytes_per_image
+ + topOfImage
+ (skiprows + row) * bytes_per_row
+ (skippixels + column) * bytes_per_pixel;
}
}
+GLvoid *
+_mesa_image_address1d( const struct gl_pixelstore_attrib *packing,
+ const GLvoid *image,
+ GLsizei width,
+ GLenum format, GLenum type,
+ GLint column )
+{
+ return _mesa_image_address(1, packing, image, width, 1,
+ format, type, 0, 0, column);
+}
+
-/*
- * Compute the stride between image rows (in bytes) for the given
- * pixel packing parameters and image width, format and type.
+GLvoid *
+_mesa_image_address2d( const struct gl_pixelstore_attrib *packing,
+ const GLvoid *image,
+ GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
+ GLint row, GLint column )
+{
+ return _mesa_image_address(2, packing, image, width, height,
+ format, type, 0, row, column);
+}
+
+
+GLvoid *
+_mesa_image_address3d( const struct gl_pixelstore_attrib *packing,
+ const GLvoid *image,
+ GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
+ GLint img, GLint row, GLint column )
+{
+ return _mesa_image_address(3, packing, image, width, height,
+ format, type, img, row, column);
+}
+
+
+
+/**
+ * Compute the stride between image rows.
+ *
+ * \param packing the pixelstore attributes
+ * \param width image width.
+ * \param format pixel format.
+ * \param type pixel data type.
+ *
+ * \return the stride in bytes for the given parameters.
+ *
+ * Computes the number of bytes per pixel and row and compensates for alignment.
+ *
+ * \sa gl_pixelstore_attrib.
*/
GLint
_mesa_image_row_stride( const struct gl_pixelstore_attrib *packing,
ASSERT(packing);
if (type == GL_BITMAP) {
/* BITMAP data */
+ GLint bytes;
if (packing->RowLength == 0) {
- GLint bytes = (width + 7) / 8;
- return bytes;
+ bytes = (width + 7) / 8;
}
else {
- GLint bytes = (packing->RowLength + 7) / 8;
- return bytes;
+ bytes = (packing->RowLength + 7) / 8;
}
+ if (packing->Invert) {
+ /* negate the bytes per row (negative row stride) */
+ bytes = -bytes;
+ }
+ return bytes;
}
else {
/* Non-BITMAP data */
remainder = bytesPerRow % packing->Alignment;
if (remainder > 0)
bytesPerRow += (packing->Alignment - remainder);
+ if (packing->Invert)
+ bytesPerRow = -bytesPerRow;
return bytesPerRow;
}
}
+#if _HAVE_FULL_GL
+
+/*
+ * Compute the stride between images in a 3D texture (in bytes) for the given
+ * pixel packing parameters and image width, format and type.
+ */
+GLint
+_mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,
+ GLint width, GLint height,
+ GLenum format, GLenum type )
+{
+ ASSERT(packing);
+ ASSERT(type != GL_BITMAP);
+
+ {
+ const GLint bytesPerPixel = _mesa_bytes_per_pixel(format, type);
+ GLint bytesPerRow, bytesPerImage, remainder;
+
+ if (bytesPerPixel <= 0)
+ return -1; /* error */
+ if (packing->RowLength == 0) {
+ bytesPerRow = bytesPerPixel * width;
+ }
+ else {
+ bytesPerRow = bytesPerPixel * packing->RowLength;
+ }
+ remainder = bytesPerRow % packing->Alignment;
+ if (remainder > 0)
+ bytesPerRow += (packing->Alignment - remainder);
+
+ if (packing->ImageHeight == 0)
+ bytesPerImage = bytesPerRow * height;
+ else
+ bytesPerImage = bytesPerRow * packing->ImageHeight;
+
+ return bytesPerImage;
+ }
+}
+
/*
* Unpack a 32x32 pixel polygon stipple from user memory using the
}
-
/*
* Pack polygon stipple into user memory given current pixel packing
* settings.
}
-
/*
- * Pack the given RGBA span into client memory at 'dest' address
- * in the given pixel format and type.
- * Optionally apply the enabled pixel transfer ops.
- * Pack into memory using the given packing params struct.
- * This is used by glReadPixels and glGetTexImage?D()
- * Input: ctx - the context
- * n - number of pixels in the span
- * rgba - the pixels
- * format - dest packing format
- * type - dest packing datatype
- * destination - destination packing address
- * packing - pixel packing parameters
- * applyTransferOps - apply scale/bias/lookup-table ops?
+ * Unpack bitmap data. Resulting data will be in most-significant-bit-first
+ * order with row alignment = 1 byte.
*/
-void
-_mesa_pack_rgba_span( GLcontext *ctx,
- GLuint n, CONST GLubyte srcRgba[][4],
- GLenum format, GLenum type, GLvoid *destination,
- const struct gl_pixelstore_attrib *packing,
- GLboolean applyTransferOps )
+GLvoid *
+_mesa_unpack_bitmap( GLint width, GLint height, const GLubyte *pixels,
+ const struct gl_pixelstore_attrib *packing )
{
- applyTransferOps &= (ctx->Pixel.ScaleOrBiasRGBA ||
- ctx->Pixel.MapColorFlag ||
- ctx->ColorMatrix.type != MATRIX_IDENTITY ||
- ctx->Pixel.ScaleOrBiasRGBApcm ||
- ctx->Pixel.ColorTableEnabled ||
- ctx->Pixel.PostColorMatrixColorTableEnabled ||
- ctx->Pixel.PostConvolutionColorTableEnabled ||
- ctx->Pixel.MinMaxEnabled ||
- ctx->Pixel.HistogramEnabled);
+ GLint bytes, row, width_in_bytes;
+ GLubyte *buffer, *dst;
- /* Test for optimized case first */
- if (!applyTransferOps && format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
- /* common simple case */
- MEMCPY( destination, srcRgba, n * 4 * sizeof(GLubyte) );
- }
- else if (!applyTransferOps && format == GL_RGB && type == GL_UNSIGNED_BYTE) {
- /* common simple case */
- GLint i;
- GLubyte *dest = (GLubyte *) destination;
- for (i = 0; i < n; i++) {
- dest[0] = srcRgba[i][RCOMP];
- dest[1] = srcRgba[i][GCOMP];
- dest[2] = srcRgba[i][BCOMP];
- dest += 3;
- }
- }
- else {
- /* general solution */
- GLfloat rgba[MAX_WIDTH][4], luminance[MAX_WIDTH];
- const GLfloat rscale = 1.0F / 255.0F;
- const GLfloat gscale = 1.0F / 255.0F;
- const GLfloat bscale = 1.0F / 255.0F;
- const GLfloat ascale = 1.0F / 255.0F;
- const GLint comps = _mesa_components_in_format(format);
- GLuint i;
+ if (!pixels)
+ return NULL;
- assert(n <= MAX_WIDTH);
+ /* Alloc dest storage */
+ bytes = ((width + 7) / 8 * height);
+ buffer = (GLubyte *) MALLOC( bytes );
+ if (!buffer)
+ return NULL;
- /* convert color components to floating point */
- for (i=0;i<n;i++) {
- rgba[i][RCOMP] = srcRgba[i][RCOMP] * rscale;
- rgba[i][GCOMP] = srcRgba[i][GCOMP] * gscale;
- rgba[i][BCOMP] = srcRgba[i][BCOMP] * bscale;
- rgba[i][ACOMP] = srcRgba[i][ACOMP] * ascale;
- }
- /*
- * Apply scale, bias and lookup-tables if enabled.
- */
- if (applyTransferOps) {
- /* scale & bias */
- if (ctx->Pixel.ScaleOrBiasRGBA) {
- _mesa_scale_and_bias_rgba( ctx, n, rgba );
- }
- /* color map lookup */
- if (ctx->Pixel.MapColorFlag) {
- _mesa_map_rgba( ctx, n, rgba );
- }
- /* GL_COLOR_TABLE lookup */
- if (ctx->Pixel.ColorTableEnabled) {
- _mesa_lookup_rgba(&ctx->ColorTable, n, rgba);
- }
- /* XXX convolution here */
- /* GL_POST_CONVOLUTION_COLOR_TABLE lookup */
- if (ctx->Pixel.PostConvolutionColorTableEnabled) {
- _mesa_lookup_rgba(&ctx->PostConvolutionColorTable, n, rgba);
- }
- /* color matrix transform */
- if (ctx->ColorMatrix.type != MATRIX_IDENTITY ||
- ctx->Pixel.ScaleOrBiasRGBApcm) {
- _mesa_transform_rgba(ctx, n, rgba);
- }
- /* GL_POST_COLOR_MATRIX_COLOR_TABLE lookup */
- if (ctx->Pixel.PostColorMatrixColorTableEnabled) {
- _mesa_lookup_rgba(&ctx->PostColorMatrixColorTable, n, rgba);
- }
- /* update histogram count */
- if (ctx->Pixel.HistogramEnabled) {
- _mesa_update_histogram(ctx, n, (CONST GLfloat (*)[4]) rgba);
- }
- /* XXX min/max here */
- if (ctx->Pixel.MinMaxEnabled) {
- _mesa_update_minmax(ctx, n, (CONST GLfloat (*)[4]) rgba);
- if (ctx->MinMax.Sink)
- return;
- }
+ width_in_bytes = CEILING( width, 8 );
+ dst = buffer;
+ for (row = 0; row < height; row++) {
+ const GLubyte *src = (const GLubyte *)
+ _mesa_image_address2d(packing, pixels, width, height,
+ GL_COLOR_INDEX, GL_BITMAP, row, 0);
+ if (!src) {
+ FREE(buffer);
+ return NULL;
}
- if (format==GL_LUMINANCE || format==GL_LUMINANCE_ALPHA) {
- for (i=0;i<n;i++) {
- GLfloat sum = rgba[i][RCOMP] + rgba[i][GCOMP] + rgba[i][BCOMP];
- luminance[i] = CLAMP( sum, 0.0F, 1.0F );
+ if (packing->SkipPixels == 0) {
+ MEMCPY( dst, src, width_in_bytes );
+ if (packing->LsbFirst) {
+ flip_bytes( dst, width_in_bytes );
}
}
-
- /*
- * 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(rgba[i][RCOMP]);
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
- break;
- case GL_ALPHA:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
- 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(rgba[i][ACOMP]);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
- dst[i*3+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
- dst[i*3+2] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
- dst[i*4+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
- dst[i*4+2] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
- dst[i*4+3] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
- dst[i*3+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
- dst[i*3+2] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
- dst[i*4+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
- dst[i*4+2] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
- dst[i*4+3] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
- }
- break;
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
- dst[i*4+1] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
- dst[i*4+2] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
- dst[i*4+3] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
- }
- break;
- default:
- gl_problem(ctx, "bad format in _mesa_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(rgba[i][RCOMP]);
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
- break;
- case GL_ALPHA:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
- 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(rgba[i][ACOMP]);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
- dst[i*3+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
- dst[i*3+2] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
- dst[i*4+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
- dst[i*4+2] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
- dst[i*4+3] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
- dst[i*3+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
- dst[i*3+2] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
- dst[i*4+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
- dst[i*4+2] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
- dst[i*4+3] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
- }
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
- dst[i*4+1] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
- dst[i*4+2] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
- dst[i*4+3] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
- }
- break;
- default:
- gl_problem(ctx, "bad format in _mesa_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(rgba[i][RCOMP]);
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_USHORT(rgba[i][BCOMP]);
- break;
- case GL_ALPHA:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_USHORT(rgba[i][ACOMP]);
- 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(rgba[i][ACOMP]);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_USHORT(rgba[i][RCOMP]);
- dst[i*3+1] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
- dst[i*3+2] = FLOAT_TO_USHORT(rgba[i][BCOMP]);
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_USHORT(rgba[i][RCOMP]);
- dst[i*4+1] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
- dst[i*4+2] = FLOAT_TO_USHORT(rgba[i][BCOMP]);
- dst[i*4+3] = FLOAT_TO_USHORT(rgba[i][ACOMP]);
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_USHORT(rgba[i][BCOMP]);
- dst[i*3+1] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
- dst[i*3+2] = FLOAT_TO_USHORT(rgba[i][RCOMP]);
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_USHORT(rgba[i][BCOMP]);
- dst[i*4+1] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
- dst[i*4+2] = FLOAT_TO_USHORT(rgba[i][RCOMP]);
- dst[i*4+3] = FLOAT_TO_USHORT(rgba[i][ACOMP]);
- }
- break;
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_USHORT(rgba[i][ACOMP]);
- dst[i*4+1] = FLOAT_TO_USHORT(rgba[i][BCOMP]);
- dst[i*4+2] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
- dst[i*4+3] = FLOAT_TO_USHORT(rgba[i][RCOMP]);
- }
- break;
- default:
- gl_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
- }
- if (packing->SwapBytes) {
- _mesa_swap2( (GLushort *) dst, n * comps);
- }
- }
- break;
- case GL_SHORT:
- {
- GLshort *dst = (GLshort *) destination;
- switch (format) {
- case GL_RED:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
- break;
- case GL_ALPHA:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
- 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(rgba[i][ACOMP]);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
- dst[i*3+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
- dst[i*3+2] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
- dst[i*4+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
- dst[i*4+2] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
- dst[i*4+3] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
- dst[i*3+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
- dst[i*3+2] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
- dst[i*4+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
- dst[i*4+2] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
- dst[i*4+3] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
- }
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
- dst[i*4+1] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
- dst[i*4+2] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
- dst[i*4+3] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
- }
- break;
- default:
- gl_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
- }
- if (packing->SwapBytes) {
- _mesa_swap2( (GLushort *) dst, n * comps );
- }
- }
- 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(rgba[i][RCOMP]);
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UINT(rgba[i][GCOMP]);
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UINT(rgba[i][BCOMP]);
- break;
- case GL_ALPHA:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_UINT(rgba[i][ACOMP]);
- 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(rgba[i][ACOMP]);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_UINT(rgba[i][RCOMP]);
- dst[i*3+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
- dst[i*3+2] = FLOAT_TO_UINT(rgba[i][BCOMP]);
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_UINT(rgba[i][RCOMP]);
- dst[i*4+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
- dst[i*4+2] = FLOAT_TO_UINT(rgba[i][BCOMP]);
- dst[i*4+3] = FLOAT_TO_UINT(rgba[i][ACOMP]);
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_UINT(rgba[i][BCOMP]);
- dst[i*3+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
- dst[i*3+2] = FLOAT_TO_UINT(rgba[i][RCOMP]);
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_UINT(rgba[i][BCOMP]);
- dst[i*4+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
- dst[i*4+2] = FLOAT_TO_UINT(rgba[i][RCOMP]);
- dst[i*4+3] = FLOAT_TO_UINT(rgba[i][ACOMP]);
- }
- break;
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_UINT(rgba[i][ACOMP]);
- dst[i*4+1] = FLOAT_TO_UINT(rgba[i][BCOMP]);
- dst[i*4+2] = FLOAT_TO_UINT(rgba[i][GCOMP]);
- dst[i*4+3] = FLOAT_TO_UINT(rgba[i][RCOMP]);
- }
- break;
- default:
- gl_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
+ else {
+ /* handling SkipPixels is a bit tricky (no pun intended!) */
+ GLint i;
+ if (packing->LsbFirst) {
+ GLubyte srcMask = 1 << (packing->SkipPixels & 0x7);
+ GLubyte dstMask = 128;
+ const GLubyte *s = src;
+ GLubyte *d = dst;
+ *d = 0;
+ for (i = 0; i < width; i++) {
+ if (*s & srcMask) {
+ *d |= dstMask;
}
- if (packing->SwapBytes) {
- _mesa_swap4( (GLuint *) dst, n * comps );
+ if (srcMask == 128) {
+ srcMask = 1;
+ s++;
}
- }
- break;
- case GL_INT:
- {
- GLint *dst = (GLint *) destination;
- switch (format) {
- case GL_RED:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_INT(rgba[i][RCOMP]);
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_INT(rgba[i][GCOMP]);
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_INT(rgba[i][BCOMP]);
- break;
- case GL_ALPHA:
- for (i=0;i<n;i++)
- dst[i] = FLOAT_TO_INT(rgba[i][ACOMP]);
- 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(rgba[i][ACOMP]);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_INT(rgba[i][RCOMP]);
- dst[i*3+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
- dst[i*3+2] = FLOAT_TO_INT(rgba[i][BCOMP]);
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_INT(rgba[i][RCOMP]);
- dst[i*4+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
- dst[i*4+2] = FLOAT_TO_INT(rgba[i][BCOMP]);
- dst[i*4+3] = FLOAT_TO_INT(rgba[i][ACOMP]);
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = FLOAT_TO_INT(rgba[i][BCOMP]);
- dst[i*3+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
- dst[i*3+2] = FLOAT_TO_INT(rgba[i][RCOMP]);
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_INT(rgba[i][BCOMP]);
- dst[i*4+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
- dst[i*4+2] = FLOAT_TO_INT(rgba[i][RCOMP]);
- dst[i*4+3] = FLOAT_TO_INT(rgba[i][ACOMP]);
- }
- break;
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = FLOAT_TO_INT(rgba[i][ACOMP]);
- dst[i*4+1] = FLOAT_TO_INT(rgba[i][BCOMP]);
- dst[i*4+2] = FLOAT_TO_INT(rgba[i][GCOMP]);
- dst[i*4+3] = FLOAT_TO_INT(rgba[i][RCOMP]);
- }
- break;
- default:
- gl_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
+ else {
+ srcMask = srcMask << 1;
}
- if (packing->SwapBytes) {
- _mesa_swap4( (GLuint *) dst, n * comps );
- }
- }
- break;
- case GL_FLOAT:
- {
- GLfloat *dst = (GLfloat *) destination;
- switch (format) {
- case GL_RED:
- for (i=0;i<n;i++)
- dst[i] = rgba[i][RCOMP];
- break;
- case GL_GREEN:
- for (i=0;i<n;i++)
- dst[i] = rgba[i][GCOMP];
- break;
- case GL_BLUE:
- for (i=0;i<n;i++)
- dst[i] = rgba[i][BCOMP];
- break;
- case GL_ALPHA:
- for (i=0;i<n;i++)
- dst[i] = rgba[i][ACOMP];
- 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] = rgba[i][ACOMP];
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- dst[i*3+0] = rgba[i][RCOMP];
- dst[i*3+1] = rgba[i][GCOMP];
- dst[i*3+2] = rgba[i][BCOMP];
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = rgba[i][RCOMP];
- dst[i*4+1] = rgba[i][GCOMP];
- dst[i*4+2] = rgba[i][BCOMP];
- dst[i*4+3] = rgba[i][ACOMP];
- }
- break;
- case GL_BGR:
- for (i=0;i<n;i++) {
- dst[i*3+0] = rgba[i][BCOMP];
- dst[i*3+1] = rgba[i][GCOMP];
- dst[i*3+2] = rgba[i][RCOMP];
- }
- break;
- case GL_BGRA:
- for (i=0;i<n;i++) {
- dst[i*4+0] = rgba[i][BCOMP];
- dst[i*4+1] = rgba[i][GCOMP];
- dst[i*4+2] = rgba[i][RCOMP];
- dst[i*4+3] = rgba[i][ACOMP];
- }
- break;
- case GL_ABGR_EXT:
- for (i=0;i<n;i++) {
- dst[i*4+0] = rgba[i][ACOMP];
- dst[i*4+1] = rgba[i][BCOMP];
- dst[i*4+2] = rgba[i][GCOMP];
- dst[i*4+3] = rgba[i][RCOMP];
- }
- break;
- default:
- gl_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
+ if (dstMask == 1) {
+ dstMask = 128;
+ d++;
+ *d = 0;
}
- if (packing->SwapBytes) {
- _mesa_swap4( (GLuint *) dst, n * comps );
- }
- }
- 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) (rgba[i][RCOMP] * 7.0F)) << 5)
- | (((GLint) (rgba[i][GCOMP] * 7.0F)) << 2)
- | (((GLint) (rgba[i][BCOMP] * 3.0F)) );
+ else {
+ dstMask = dstMask >> 1;
}
}
- 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) (rgba[i][RCOMP] * 7.0F)) )
- | (((GLint) (rgba[i][GCOMP] * 7.0F)) << 3)
- | (((GLint) (rgba[i][BCOMP] * 3.0F)) << 5);
+ }
+ else {
+ GLubyte srcMask = 128 >> (packing->SkipPixels & 0x7);
+ GLubyte dstMask = 128;
+ const GLubyte *s = src;
+ GLubyte *d = dst;
+ *d = 0;
+ for (i = 0; i < width; i++) {
+ if (*s & srcMask) {
+ *d |= dstMask;
}
- }
- 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) (rgba[i][RCOMP] * 31.0F)) << 11)
- | (((GLint) (rgba[i][GCOMP] * 63.0F)) << 5)
- | (((GLint) (rgba[i][BCOMP] * 31.0F)) );
+ if (srcMask == 1) {
+ srcMask = 128;
+ s++;
}
- }
- 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) (rgba[i][RCOMP] * 31.0F)) )
- | (((GLint) (rgba[i][GCOMP] * 63.0F)) << 5)
- | (((GLint) (rgba[i][BCOMP] * 31.0F)) << 11);
+ else {
+ srcMask = srcMask >> 1;
}
- }
- 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) (rgba[i][RCOMP] * 15.0F)) << 12)
- | (((GLint) (rgba[i][GCOMP] * 15.0F)) << 8)
- | (((GLint) (rgba[i][BCOMP] * 15.0F)) << 4)
- | (((GLint) (rgba[i][ACOMP] * 15.0F)) );
+ if (dstMask == 1) {
+ dstMask = 128;
+ d++;
+ *d = 0;
}
- }
- 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) (rgba[i][RCOMP] * 15.0F)) )
- | (((GLint) (rgba[i][GCOMP] * 15.0F)) << 4)
- | (((GLint) (rgba[i][BCOMP] * 15.0F)) << 8)
- | (((GLint) (rgba[i][ACOMP] * 15.0F)) << 12);
+ else {
+ dstMask = dstMask >> 1;
}
}
- 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) (rgba[i][RCOMP] * 31.0F)) << 11)
- | (((GLint) (rgba[i][GCOMP] * 31.0F)) << 6)
- | (((GLint) (rgba[i][BCOMP] * 31.0F)) << 1)
- | (((GLint) (rgba[i][ACOMP] * 1.0F)) );
+ }
+ }
+ dst += width_in_bytes;
+ }
+
+ return buffer;
+}
+
+
+/*
+ * Pack bitmap data.
+ */
+void
+_mesa_pack_bitmap( GLint width, GLint height, const GLubyte *source,
+ GLubyte *dest, const struct gl_pixelstore_attrib *packing )
+{
+ GLint row, width_in_bytes;
+ const GLubyte *src;
+
+ if (!source)
+ return;
+
+ width_in_bytes = CEILING( width, 8 );
+ src = source;
+ for (row = 0; row < height; row++) {
+ GLubyte *dst = (GLubyte *) _mesa_image_address2d(packing, dest,
+ width, height, GL_COLOR_INDEX, GL_BITMAP, row, 0);
+ if (!dst)
+ return;
+
+ if (packing->SkipPixels == 0) {
+ MEMCPY( dst, src, width_in_bytes );
+ if (packing->LsbFirst) {
+ flip_bytes( dst, width_in_bytes );
+ }
+ }
+ else {
+ /* handling SkipPixels is a bit tricky (no pun intended!) */
+ GLint i;
+ if (packing->LsbFirst) {
+ GLubyte srcMask = 1 << (packing->SkipPixels & 0x7);
+ GLubyte dstMask = 128;
+ const GLubyte *s = src;
+ GLubyte *d = dst;
+ *d = 0;
+ for (i = 0; i < width; i++) {
+ if (*s & srcMask) {
+ *d |= dstMask;
}
- }
- 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) (rgba[i][RCOMP] * 31.0F)) )
- | (((GLint) (rgba[i][GCOMP] * 31.0F)) << 5)
- | (((GLint) (rgba[i][BCOMP] * 31.0F)) << 10)
- | (((GLint) (rgba[i][ACOMP] * 1.0F)) << 15);
+ if (srcMask == 128) {
+ srcMask = 1;
+ s++;
}
- }
- 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] = (((GLuint) (rgba[i][RCOMP] * 255.0F)) << 24)
- | (((GLuint) (rgba[i][GCOMP] * 255.0F)) << 16)
- | (((GLuint) (rgba[i][BCOMP] * 255.0F)) << 8)
- | (((GLuint) (rgba[i][ACOMP] * 255.0F)) );
+ else {
+ srcMask = srcMask << 1;
}
- }
- else if (format == GL_BGRA) {
- GLuint *dst = (GLuint *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLuint) (rgba[i][BCOMP] * 255.0F)) << 24)
- | (((GLuint) (rgba[i][GCOMP] * 255.0F)) << 16)
- | (((GLuint) (rgba[i][RCOMP] * 255.0F)) << 8)
- | (((GLuint) (rgba[i][ACOMP] * 255.0F)) );
+ if (dstMask == 1) {
+ dstMask = 128;
+ d++;
+ *d = 0;
}
- }
- else if (format == GL_ABGR_EXT) {
- GLuint *dst = (GLuint *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLuint) (rgba[i][ACOMP] * 255.0F)) << 24)
- | (((GLuint) (rgba[i][BCOMP] * 255.0F)) << 16)
- | (((GLuint) (rgba[i][GCOMP] * 255.0F)) << 8)
- | (((GLuint) (rgba[i][RCOMP] * 255.0F)) );
+ else {
+ dstMask = dstMask >> 1;
}
}
- 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] = (((GLuint) (rgba[i][RCOMP] * 255.0F)) )
- | (((GLuint) (rgba[i][GCOMP] * 255.0F)) << 8)
- | (((GLuint) (rgba[i][BCOMP] * 255.0F)) << 16)
- | (((GLuint) (rgba[i][ACOMP] * 255.0F)) << 24);
+ }
+ else {
+ GLubyte srcMask = 128 >> (packing->SkipPixels & 0x7);
+ GLubyte dstMask = 128;
+ const GLubyte *s = src;
+ GLubyte *d = dst;
+ *d = 0;
+ for (i = 0; i < width; i++) {
+ if (*s & srcMask) {
+ *d |= dstMask;
}
- }
- else if (format == GL_BGRA) {
- GLuint *dst = (GLuint *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLuint) (rgba[i][BCOMP] * 255.0F)) )
- | (((GLuint) (rgba[i][GCOMP] * 255.0F)) << 8)
- | (((GLuint) (rgba[i][RCOMP] * 255.0F)) << 16)
- | (((GLuint) (rgba[i][ACOMP] * 255.0F)) << 24);
+ if (srcMask == 1) {
+ srcMask = 128;
+ s++;
}
- }
- else if (format == GL_ABGR_EXT) {
- GLuint *dst = (GLuint *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLuint) (rgba[i][ACOMP] * 255.0F)) )
- | (((GLuint) (rgba[i][BCOMP] * 255.0F)) << 8)
- | (((GLuint) (rgba[i][GCOMP] * 255.0F)) << 16)
- | (((GLuint) (rgba[i][RCOMP] * 255.0F)) << 24);
+ else {
+ srcMask = srcMask >> 1;
}
- }
- 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] = (((GLuint) (rgba[i][RCOMP] * 1023.0F)) << 22)
- | (((GLuint) (rgba[i][GCOMP] * 1023.0F)) << 12)
- | (((GLuint) (rgba[i][BCOMP] * 1023.0F)) << 2)
- | (((GLuint) (rgba[i][ACOMP] * 3.0F)) );
+ if (dstMask == 1) {
+ dstMask = 128;
+ d++;
+ *d = 0;
}
- }
- else if (format == GL_BGRA) {
- GLuint *dst = (GLuint *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLuint) (rgba[i][BCOMP] * 1023.0F)) << 22)
- | (((GLuint) (rgba[i][GCOMP] * 1023.0F)) << 12)
- | (((GLuint) (rgba[i][RCOMP] * 1023.0F)) << 2)
- | (((GLuint) (rgba[i][ACOMP] * 3.0F)) );
+ else {
+ dstMask = dstMask >> 1;
}
}
- else if (format == GL_ABGR_EXT) {
- GLuint *dst = (GLuint *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLuint) (rgba[i][ACOMP] * 1023.0F)) << 22)
- | (((GLuint) (rgba[i][BCOMP] * 1023.0F)) << 12)
- | (((GLuint) (rgba[i][GCOMP] * 1023.0F)) << 2)
- | (((GLuint) (rgba[i][RCOMP] * 3.0F)) );
- }
+ }
+ }
+ src += width_in_bytes;
+ }
+}
+
+
+/**
+ * Apply various pixel transfer operations to an array of RGBA pixels
+ * as indicated by the transferOps bitmask
+ */
+void
+_mesa_apply_rgba_transfer_ops(GLcontext *ctx, GLuint transferOps,
+ GLuint n, GLfloat rgba[][4])
+{
+ /* scale & bias */
+ if (transferOps & IMAGE_SCALE_BIAS_BIT) {
+ _mesa_scale_and_bias_rgba(n, rgba,
+ ctx->Pixel.RedScale, ctx->Pixel.GreenScale,
+ ctx->Pixel.BlueScale, ctx->Pixel.AlphaScale,
+ ctx->Pixel.RedBias, ctx->Pixel.GreenBias,
+ ctx->Pixel.BlueBias, ctx->Pixel.AlphaBias);
+ }
+ /* color map lookup */
+ if (transferOps & IMAGE_MAP_COLOR_BIT) {
+ _mesa_map_rgba( ctx, n, rgba );
+ }
+ /* GL_COLOR_TABLE lookup */
+ if (transferOps & IMAGE_COLOR_TABLE_BIT) {
+ _mesa_lookup_rgba_float(&ctx->ColorTable, n, rgba);
+ }
+ /* convolution */
+ if (transferOps & IMAGE_CONVOLUTION_BIT) {
+ /* this has to be done in the calling code */
+ _mesa_problem(ctx, "IMAGE_CONVOLUTION_BIT set in _mesa_apply_transfer_ops");
+ }
+ /* GL_POST_CONVOLUTION_RED/GREEN/BLUE/ALPHA_SCALE/BIAS */
+ if (transferOps & IMAGE_POST_CONVOLUTION_SCALE_BIAS) {
+ _mesa_scale_and_bias_rgba(n, rgba,
+ ctx->Pixel.PostConvolutionScale[RCOMP],
+ ctx->Pixel.PostConvolutionScale[GCOMP],
+ ctx->Pixel.PostConvolutionScale[BCOMP],
+ ctx->Pixel.PostConvolutionScale[ACOMP],
+ ctx->Pixel.PostConvolutionBias[RCOMP],
+ ctx->Pixel.PostConvolutionBias[GCOMP],
+ ctx->Pixel.PostConvolutionBias[BCOMP],
+ ctx->Pixel.PostConvolutionBias[ACOMP]);
+ }
+ /* GL_POST_CONVOLUTION_COLOR_TABLE lookup */
+ if (transferOps & IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT) {
+ _mesa_lookup_rgba_float(&ctx->PostConvolutionColorTable, n, rgba);
+ }
+ /* color matrix transform */
+ if (transferOps & IMAGE_COLOR_MATRIX_BIT) {
+ _mesa_transform_rgba(ctx, n, rgba);
+ }
+ /* GL_POST_COLOR_MATRIX_COLOR_TABLE lookup */
+ if (transferOps & IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT) {
+ _mesa_lookup_rgba_float(&ctx->PostColorMatrixColorTable, n, rgba);
+ }
+ /* update histogram count */
+ if (transferOps & IMAGE_HISTOGRAM_BIT) {
+ _mesa_update_histogram(ctx, n, (CONST GLfloat (*)[4]) rgba);
+ }
+ /* update min/max values */
+ if (transferOps & IMAGE_MIN_MAX_BIT) {
+ _mesa_update_minmax(ctx, n, (CONST GLfloat (*)[4]) rgba);
+ }
+ /* clamping to [0,1] */
+ if (transferOps & IMAGE_CLAMP_BIT) {
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ rgba[i][RCOMP] = CLAMP(rgba[i][RCOMP], 0.0F, 1.0F);
+ rgba[i][GCOMP] = CLAMP(rgba[i][GCOMP], 0.0F, 1.0F);
+ rgba[i][BCOMP] = CLAMP(rgba[i][BCOMP], 0.0F, 1.0F);
+ rgba[i][ACOMP] = CLAMP(rgba[i][ACOMP], 0.0F, 1.0F);
+ }
+ }
+}
+
+
+
+/*
+ * Used to pack an array [][4] of RGBA float colors as specified
+ * by the dstFormat, dstType and dstPacking. Used by glReadPixels,
+ * glGetConvolutionFilter(), etc.
+ */
+void
+_mesa_pack_rgba_span_float( GLcontext *ctx,
+ GLuint n, CONST GLfloat rgbaIn[][4],
+ GLenum dstFormat, GLenum dstType,
+ GLvoid *dstAddr,
+ const struct gl_pixelstore_attrib *dstPacking,
+ GLuint transferOps )
+{
+ const GLint comps = _mesa_components_in_format(dstFormat);
+ GLfloat luminance[MAX_WIDTH];
+ const GLfloat (*rgba)[4];
+ GLuint i;
+
+ if (transferOps) {
+ /* make copy of incoming data */
+ DEFMARRAY(GLfloat, rgbaCopy, MAX_WIDTH, 4); /* mac 32k limitation */
+ CHECKARRAY(rgbaCopy, return); /* mac 32k limitation */
+
+ _mesa_memcpy(rgbaCopy, rgbaIn, n * 4 * sizeof(GLfloat));
+ _mesa_apply_rgba_transfer_ops(ctx, transferOps, n, rgbaCopy);
+ rgba = (const GLfloat (*)[4]) rgbaCopy;
+
+ if ((transferOps & IMAGE_MIN_MAX_BIT) && ctx->MinMax.Sink) {
+ UNDEFARRAY(rgbaCopy); /* mac 32k limitation */
+ return;
+ }
+ UNDEFARRAY(rgbaCopy); /* mac 32k limitation */
+ }
+ else {
+ /* use incoming data, not a copy */
+ rgba = (const GLfloat (*)[4]) rgbaIn;
+ }
+
+ if (dstFormat == GL_LUMINANCE || dstFormat == GL_LUMINANCE_ALPHA) {
+ /* compute luminance values */
+ if (ctx->ClampFragmentColors) {
+ for (i = 0; i < n; i++) {
+ GLfloat sum = rgba[i][RCOMP] + rgba[i][GCOMP] + rgba[i][BCOMP];
+ luminance[i] = CLAMP(sum, 0.0F, 1.0F);
+ }
+ }
+ else {
+ for (i = 0; i < n; i++) {
+ luminance[i] = rgba[i][RCOMP] + rgba[i][GCOMP] + rgba[i][BCOMP];
+ }
+ }
+ }
+
+ /*
+ * Pack/store the pixels. Ugh! Lots of cases!!!
+ */
+ switch (dstType) {
+ case GL_UNSIGNED_BYTE:
+ {
+ GLubyte *dst = (GLubyte *) dstAddr;
+ switch (dstFormat) {
+ case GL_RED:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
+ break;
+ case GL_GREEN:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
+ break;
+ case GL_BLUE:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
+ break;
+ case GL_ALPHA:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
+ 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(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_RGB:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
+ dst[i*3+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
+ dst[i*3+2] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
+ }
+ break;
+ case GL_RGBA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
+ dst[i*4+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
+ dst[i*4+2] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
+ dst[i*4+3] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_BGR:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
+ dst[i*3+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
+ dst[i*3+2] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
+ }
+ break;
+ case GL_BGRA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
+ dst[i*4+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
+ dst[i*4+2] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
+ dst[i*4+3] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_ABGR_EXT:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
+ dst[i*4+1] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
+ dst[i*4+2] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
+ dst[i*4+3] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
+ }
+ break;
+ default:
+ _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
}
- 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] = (((GLuint) (rgba[i][RCOMP] * 1023.0F)) )
- | (((GLuint) (rgba[i][GCOMP] * 1023.0F)) << 10)
- | (((GLuint) (rgba[i][BCOMP] * 1023.0F)) << 20)
- | (((GLuint) (rgba[i][ACOMP] * 3.0F)) << 30);
- }
+ }
+ break;
+ case GL_BYTE:
+ {
+ GLbyte *dst = (GLbyte *) dstAddr;
+ switch (dstFormat) {
+ case GL_RED:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
+ break;
+ case GL_GREEN:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
+ break;
+ case GL_BLUE:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
+ break;
+ case GL_ALPHA:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
+ 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(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_RGB:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
+ dst[i*3+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
+ dst[i*3+2] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
+ }
+ break;
+ case GL_RGBA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
+ dst[i*4+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
+ dst[i*4+2] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
+ dst[i*4+3] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_BGR:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
+ dst[i*3+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
+ dst[i*3+2] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
+ }
+ break;
+ case GL_BGRA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
+ dst[i*4+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
+ dst[i*4+2] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
+ dst[i*4+3] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
+ }
+ case GL_ABGR_EXT:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
+ dst[i*4+1] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
+ dst[i*4+2] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
+ dst[i*4+3] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
+ }
+ break;
+ default:
+ _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
}
- else if (format == GL_BGRA) {
- GLuint *dst = (GLuint *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLuint) (rgba[i][BCOMP] * 1023.0F)) )
- | (((GLuint) (rgba[i][GCOMP] * 1023.0F)) << 10)
- | (((GLuint) (rgba[i][RCOMP] * 1023.0F)) << 20)
- | (((GLuint) (rgba[i][ACOMP] * 3.0F)) << 30);
- }
+ }
+ break;
+ case GL_UNSIGNED_SHORT:
+ {
+ GLushort *dst = (GLushort *) dstAddr;
+ switch (dstFormat) {
+ case GL_RED:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_USHORT(rgba[i][RCOMP]);
+ break;
+ case GL_GREEN:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
+ break;
+ case GL_BLUE:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_USHORT(rgba[i][BCOMP]);
+ break;
+ case GL_ALPHA:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_USHORT(rgba[i][ACOMP]);
+ 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(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_RGB:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = FLOAT_TO_USHORT(rgba[i][RCOMP]);
+ dst[i*3+1] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
+ dst[i*3+2] = FLOAT_TO_USHORT(rgba[i][BCOMP]);
+ }
+ break;
+ case GL_RGBA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_USHORT(rgba[i][RCOMP]);
+ dst[i*4+1] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
+ dst[i*4+2] = FLOAT_TO_USHORT(rgba[i][BCOMP]);
+ dst[i*4+3] = FLOAT_TO_USHORT(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_BGR:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = FLOAT_TO_USHORT(rgba[i][BCOMP]);
+ dst[i*3+1] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
+ dst[i*3+2] = FLOAT_TO_USHORT(rgba[i][RCOMP]);
+ }
+ break;
+ case GL_BGRA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_USHORT(rgba[i][BCOMP]);
+ dst[i*4+1] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
+ dst[i*4+2] = FLOAT_TO_USHORT(rgba[i][RCOMP]);
+ dst[i*4+3] = FLOAT_TO_USHORT(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_ABGR_EXT:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_USHORT(rgba[i][ACOMP]);
+ dst[i*4+1] = FLOAT_TO_USHORT(rgba[i][BCOMP]);
+ dst[i*4+2] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
+ dst[i*4+3] = FLOAT_TO_USHORT(rgba[i][RCOMP]);
+ }
+ break;
+ default:
+ _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
}
- else if (format == GL_ABGR_EXT) {
- GLuint *dst = (GLuint *) destination;
- for (i=0;i<n;i++) {
- dst[i] = (((GLuint) (rgba[i][ACOMP] * 1023.0F)) )
- | (((GLuint) (rgba[i][BCOMP] * 1023.0F)) << 10)
- | (((GLuint) (rgba[i][GCOMP] * 1023.0F)) << 20)
- | (((GLuint) (rgba[i][RCOMP] * 3.0F)) << 30);
- }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap2( (GLushort *) dst, n * comps);
}
- break;
- default:
- gl_problem( ctx, "bad type in _mesa_pack_rgba_span" );
- }
+ }
+ break;
+ case GL_SHORT:
+ {
+ GLshort *dst = (GLshort *) dstAddr;
+ switch (dstFormat) {
+ case GL_RED:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
+ break;
+ case GL_GREEN:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
+ break;
+ case GL_BLUE:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
+ break;
+ case GL_ALPHA:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
+ 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(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_RGB:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
+ dst[i*3+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
+ dst[i*3+2] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
+ }
+ break;
+ case GL_RGBA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
+ dst[i*4+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
+ dst[i*4+2] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
+ dst[i*4+3] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_BGR:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
+ dst[i*3+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
+ dst[i*3+2] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
+ }
+ break;
+ case GL_BGRA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
+ dst[i*4+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
+ dst[i*4+2] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
+ dst[i*4+3] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
+ }
+ case GL_ABGR_EXT:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
+ dst[i*4+1] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
+ dst[i*4+2] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
+ dst[i*4+3] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
+ }
+ break;
+ default:
+ _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap2( (GLushort *) dst, n * comps );
+ }
+ }
+ break;
+ case GL_UNSIGNED_INT:
+ {
+ GLuint *dst = (GLuint *) dstAddr;
+ switch (dstFormat) {
+ case GL_RED:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_UINT(rgba[i][RCOMP]);
+ break;
+ case GL_GREEN:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_UINT(rgba[i][GCOMP]);
+ break;
+ case GL_BLUE:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_UINT(rgba[i][BCOMP]);
+ break;
+ case GL_ALPHA:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_UINT(rgba[i][ACOMP]);
+ 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(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_RGB:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = FLOAT_TO_UINT(rgba[i][RCOMP]);
+ dst[i*3+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
+ dst[i*3+2] = FLOAT_TO_UINT(rgba[i][BCOMP]);
+ }
+ break;
+ case GL_RGBA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_UINT(rgba[i][RCOMP]);
+ dst[i*4+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
+ dst[i*4+2] = FLOAT_TO_UINT(rgba[i][BCOMP]);
+ dst[i*4+3] = FLOAT_TO_UINT(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_BGR:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = FLOAT_TO_UINT(rgba[i][BCOMP]);
+ dst[i*3+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
+ dst[i*3+2] = FLOAT_TO_UINT(rgba[i][RCOMP]);
+ }
+ break;
+ case GL_BGRA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_UINT(rgba[i][BCOMP]);
+ dst[i*4+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
+ dst[i*4+2] = FLOAT_TO_UINT(rgba[i][RCOMP]);
+ dst[i*4+3] = FLOAT_TO_UINT(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_ABGR_EXT:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_UINT(rgba[i][ACOMP]);
+ dst[i*4+1] = FLOAT_TO_UINT(rgba[i][BCOMP]);
+ dst[i*4+2] = FLOAT_TO_UINT(rgba[i][GCOMP]);
+ dst[i*4+3] = FLOAT_TO_UINT(rgba[i][RCOMP]);
+ }
+ break;
+ default:
+ _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap4( (GLuint *) dst, n * comps );
+ }
+ }
+ break;
+ case GL_INT:
+ {
+ GLint *dst = (GLint *) dstAddr;
+ switch (dstFormat) {
+ case GL_RED:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_INT(rgba[i][RCOMP]);
+ break;
+ case GL_GREEN:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_INT(rgba[i][GCOMP]);
+ break;
+ case GL_BLUE:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_INT(rgba[i][BCOMP]);
+ break;
+ case GL_ALPHA:
+ for (i=0;i<n;i++)
+ dst[i] = FLOAT_TO_INT(rgba[i][ACOMP]);
+ 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(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_RGB:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = FLOAT_TO_INT(rgba[i][RCOMP]);
+ dst[i*3+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
+ dst[i*3+2] = FLOAT_TO_INT(rgba[i][BCOMP]);
+ }
+ break;
+ case GL_RGBA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_INT(rgba[i][RCOMP]);
+ dst[i*4+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
+ dst[i*4+2] = FLOAT_TO_INT(rgba[i][BCOMP]);
+ dst[i*4+3] = FLOAT_TO_INT(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_BGR:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = FLOAT_TO_INT(rgba[i][BCOMP]);
+ dst[i*3+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
+ dst[i*3+2] = FLOAT_TO_INT(rgba[i][RCOMP]);
+ }
+ break;
+ case GL_BGRA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_INT(rgba[i][BCOMP]);
+ dst[i*4+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
+ dst[i*4+2] = FLOAT_TO_INT(rgba[i][RCOMP]);
+ dst[i*4+3] = FLOAT_TO_INT(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_ABGR_EXT:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = FLOAT_TO_INT(rgba[i][ACOMP]);
+ dst[i*4+1] = FLOAT_TO_INT(rgba[i][BCOMP]);
+ dst[i*4+2] = FLOAT_TO_INT(rgba[i][GCOMP]);
+ dst[i*4+3] = FLOAT_TO_INT(rgba[i][RCOMP]);
+ }
+ break;
+ default:
+ _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap4( (GLuint *) dst, n * comps );
+ }
+ }
+ break;
+ case GL_FLOAT:
+ {
+ GLfloat *dst = (GLfloat *) dstAddr;
+ switch (dstFormat) {
+ case GL_RED:
+ for (i=0;i<n;i++)
+ dst[i] = rgba[i][RCOMP];
+ break;
+ case GL_GREEN:
+ for (i=0;i<n;i++)
+ dst[i] = rgba[i][GCOMP];
+ break;
+ case GL_BLUE:
+ for (i=0;i<n;i++)
+ dst[i] = rgba[i][BCOMP];
+ break;
+ case GL_ALPHA:
+ for (i=0;i<n;i++)
+ dst[i] = rgba[i][ACOMP];
+ 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] = rgba[i][ACOMP];
+ }
+ break;
+ case GL_RGB:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = rgba[i][RCOMP];
+ dst[i*3+1] = rgba[i][GCOMP];
+ dst[i*3+2] = rgba[i][BCOMP];
+ }
+ break;
+ case GL_RGBA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = rgba[i][RCOMP];
+ dst[i*4+1] = rgba[i][GCOMP];
+ dst[i*4+2] = rgba[i][BCOMP];
+ dst[i*4+3] = rgba[i][ACOMP];
+ }
+ break;
+ case GL_BGR:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = rgba[i][BCOMP];
+ dst[i*3+1] = rgba[i][GCOMP];
+ dst[i*3+2] = rgba[i][RCOMP];
+ }
+ break;
+ case GL_BGRA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = rgba[i][BCOMP];
+ dst[i*4+1] = rgba[i][GCOMP];
+ dst[i*4+2] = rgba[i][RCOMP];
+ dst[i*4+3] = rgba[i][ACOMP];
+ }
+ break;
+ case GL_ABGR_EXT:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = rgba[i][ACOMP];
+ dst[i*4+1] = rgba[i][BCOMP];
+ dst[i*4+2] = rgba[i][GCOMP];
+ dst[i*4+3] = rgba[i][RCOMP];
+ }
+ break;
+ default:
+ _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap4( (GLuint *) dst, n * comps );
+ }
+ }
+ break;
+ case GL_HALF_FLOAT_ARB:
+ {
+ GLhalfARB *dst = (GLhalfARB *) dstAddr;
+ switch (dstFormat) {
+ case GL_RED:
+ for (i=0;i<n;i++)
+ dst[i] = _mesa_float_to_half(rgba[i][RCOMP]);
+ break;
+ case GL_GREEN:
+ for (i=0;i<n;i++)
+ dst[i] = _mesa_float_to_half(rgba[i][GCOMP]);
+ break;
+ case GL_BLUE:
+ for (i=0;i<n;i++)
+ dst[i] = _mesa_float_to_half(rgba[i][BCOMP]);
+ break;
+ case GL_ALPHA:
+ for (i=0;i<n;i++)
+ dst[i] = _mesa_float_to_half(rgba[i][ACOMP]);
+ break;
+ case GL_LUMINANCE:
+ for (i=0;i<n;i++)
+ dst[i] = _mesa_float_to_half(luminance[i]);
+ break;
+ case GL_LUMINANCE_ALPHA:
+ for (i=0;i<n;i++) {
+ dst[i*2+0] = _mesa_float_to_half(luminance[i]);
+ dst[i*2+1] = _mesa_float_to_half(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_RGB:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = _mesa_float_to_half(rgba[i][RCOMP]);
+ dst[i*3+1] = _mesa_float_to_half(rgba[i][GCOMP]);
+ dst[i*3+2] = _mesa_float_to_half(rgba[i][BCOMP]);
+ }
+ break;
+ case GL_RGBA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = _mesa_float_to_half(rgba[i][RCOMP]);
+ dst[i*4+1] = _mesa_float_to_half(rgba[i][GCOMP]);
+ dst[i*4+2] = _mesa_float_to_half(rgba[i][BCOMP]);
+ dst[i*4+3] = _mesa_float_to_half(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_BGR:
+ for (i=0;i<n;i++) {
+ dst[i*3+0] = _mesa_float_to_half(rgba[i][BCOMP]);
+ dst[i*3+1] = _mesa_float_to_half(rgba[i][GCOMP]);
+ dst[i*3+2] = _mesa_float_to_half(rgba[i][RCOMP]);
+ }
+ break;
+ case GL_BGRA:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = _mesa_float_to_half(rgba[i][BCOMP]);
+ dst[i*4+1] = _mesa_float_to_half(rgba[i][GCOMP]);
+ dst[i*4+2] = _mesa_float_to_half(rgba[i][RCOMP]);
+ dst[i*4+3] = _mesa_float_to_half(rgba[i][ACOMP]);
+ }
+ break;
+ case GL_ABGR_EXT:
+ for (i=0;i<n;i++) {
+ dst[i*4+0] = _mesa_float_to_half(rgba[i][ACOMP]);
+ dst[i*4+1] = _mesa_float_to_half(rgba[i][BCOMP]);
+ dst[i*4+2] = _mesa_float_to_half(rgba[i][GCOMP]);
+ dst[i*4+3] = _mesa_float_to_half(rgba[i][RCOMP]);
+ }
+ break;
+ default:
+ _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap2( (GLushort *) dst, n * comps );
+ }
+ }
+ break;
+ case GL_UNSIGNED_BYTE_3_3_2:
+ if (dstFormat == GL_RGB) {
+ GLubyte *dst = (GLubyte *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][RCOMP] * 7.0F)) << 5)
+ | (((GLint) (rgba[i][GCOMP] * 7.0F)) << 2)
+ | (((GLint) (rgba[i][BCOMP] * 3.0F)) );
+ }
+ }
+ break;
+ case GL_UNSIGNED_BYTE_2_3_3_REV:
+ if (dstFormat == GL_RGB) {
+ GLubyte *dst = (GLubyte *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][RCOMP] * 7.0F)) )
+ | (((GLint) (rgba[i][GCOMP] * 7.0F)) << 3)
+ | (((GLint) (rgba[i][BCOMP] * 3.0F)) << 5);
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT_5_6_5:
+ if (dstFormat == GL_RGB) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][RCOMP] * 31.0F)) << 11)
+ | (((GLint) (rgba[i][GCOMP] * 63.0F)) << 5)
+ | (((GLint) (rgba[i][BCOMP] * 31.0F)) );
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT_5_6_5_REV:
+ if (dstFormat == GL_RGB) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][RCOMP] * 31.0F)) )
+ | (((GLint) (rgba[i][GCOMP] * 63.0F)) << 5)
+ | (((GLint) (rgba[i][BCOMP] * 31.0F)) << 11);
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT_4_4_4_4:
+ if (dstFormat == GL_RGBA) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][RCOMP] * 15.0F)) << 12)
+ | (((GLint) (rgba[i][GCOMP] * 15.0F)) << 8)
+ | (((GLint) (rgba[i][BCOMP] * 15.0F)) << 4)
+ | (((GLint) (rgba[i][ACOMP] * 15.0F)) );
+ }
+ }
+ else if (dstFormat == GL_BGRA) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][BCOMP] * 15.0F)) << 12)
+ | (((GLint) (rgba[i][GCOMP] * 15.0F)) << 8)
+ | (((GLint) (rgba[i][RCOMP] * 15.0F)) << 4)
+ | (((GLint) (rgba[i][ACOMP] * 15.0F)) );
+ }
+ }
+ else if (dstFormat == GL_ABGR_EXT) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][ACOMP] * 15.0F)) << 4)
+ | (((GLint) (rgba[i][BCOMP] * 15.0F)) << 8)
+ | (((GLint) (rgba[i][GCOMP] * 15.0F)) << 12)
+ | (((GLint) (rgba[i][RCOMP] * 15.0F)) );
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT_4_4_4_4_REV:
+ if (dstFormat == GL_RGBA) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][RCOMP] * 15.0F)) )
+ | (((GLint) (rgba[i][GCOMP] * 15.0F)) << 4)
+ | (((GLint) (rgba[i][BCOMP] * 15.0F)) << 8)
+ | (((GLint) (rgba[i][ACOMP] * 15.0F)) << 12);
+ }
+ }
+ else if (dstFormat == GL_BGRA) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][BCOMP] * 15.0F)) )
+ | (((GLint) (rgba[i][GCOMP] * 15.0F)) << 4)
+ | (((GLint) (rgba[i][RCOMP] * 15.0F)) << 8)
+ | (((GLint) (rgba[i][ACOMP] * 15.0F)) << 12);
+ }
+ }
+ else if (dstFormat == GL_ABGR_EXT) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][ACOMP] * 15.0F)) )
+ | (((GLint) (rgba[i][BCOMP] * 15.0F)) << 4)
+ | (((GLint) (rgba[i][GCOMP] * 15.0F)) << 8)
+ | (((GLint) (rgba[i][RCOMP] * 15.0F)) << 12);
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT_5_5_5_1:
+ if (dstFormat == GL_RGBA) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][RCOMP] * 31.0F)) << 11)
+ | (((GLint) (rgba[i][GCOMP] * 31.0F)) << 6)
+ | (((GLint) (rgba[i][BCOMP] * 31.0F)) << 1)
+ | (((GLint) (rgba[i][ACOMP] * 1.0F)) );
+ }
+ }
+ else if (dstFormat == GL_BGRA) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][BCOMP] * 31.0F)) << 11)
+ | (((GLint) (rgba[i][GCOMP] * 31.0F)) << 6)
+ | (((GLint) (rgba[i][RCOMP] * 31.0F)) << 1)
+ | (((GLint) (rgba[i][ACOMP] * 1.0F)) );
+ }
+ }
+ else if (dstFormat == GL_ABGR_EXT) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][ACOMP] * 31.0F)) << 11)
+ | (((GLint) (rgba[i][BCOMP] * 31.0F)) << 6)
+ | (((GLint) (rgba[i][GCOMP] * 31.0F)) << 1)
+ | (((GLint) (rgba[i][RCOMP] * 1.0F)) );
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT_1_5_5_5_REV:
+ if (dstFormat == GL_RGBA) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][RCOMP] * 31.0F)) )
+ | (((GLint) (rgba[i][GCOMP] * 31.0F)) << 5)
+ | (((GLint) (rgba[i][BCOMP] * 31.0F)) << 10)
+ | (((GLint) (rgba[i][ACOMP] * 1.0F)) << 15);
+ }
+ }
+ else if (dstFormat == GL_BGRA) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][BCOMP] * 31.0F)) )
+ | (((GLint) (rgba[i][GCOMP] * 31.0F)) << 5)
+ | (((GLint) (rgba[i][RCOMP] * 31.0F)) << 10)
+ | (((GLint) (rgba[i][ACOMP] * 1.0F)) << 15);
+ }
+ }
+ else if (dstFormat == GL_ABGR_EXT) {
+ GLushort *dst = (GLushort *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLint) (rgba[i][ACOMP] * 31.0F)) )
+ | (((GLint) (rgba[i][BCOMP] * 31.0F)) << 5)
+ | (((GLint) (rgba[i][GCOMP] * 31.0F)) << 10)
+ | (((GLint) (rgba[i][RCOMP] * 1.0F)) << 15);
+ }
+ }
+ break;
+ case GL_UNSIGNED_INT_8_8_8_8:
+ if (dstFormat == GL_RGBA) {
+ GLuint *dst = (GLuint *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLuint) (rgba[i][RCOMP] * 255.0F)) << 24)
+ | (((GLuint) (rgba[i][GCOMP] * 255.0F)) << 16)
+ | (((GLuint) (rgba[i][BCOMP] * 255.0F)) << 8)
+ | (((GLuint) (rgba[i][ACOMP] * 255.0F)) );
+ }
+ }
+ else if (dstFormat == GL_BGRA) {
+ GLuint *dst = (GLuint *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLuint) (rgba[i][BCOMP] * 255.0F)) << 24)
+ | (((GLuint) (rgba[i][GCOMP] * 255.0F)) << 16)
+ | (((GLuint) (rgba[i][RCOMP] * 255.0F)) << 8)
+ | (((GLuint) (rgba[i][ACOMP] * 255.0F)) );
+ }
+ }
+ else if (dstFormat == GL_ABGR_EXT) {
+ GLuint *dst = (GLuint *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLuint) (rgba[i][ACOMP] * 255.0F)) << 24)
+ | (((GLuint) (rgba[i][BCOMP] * 255.0F)) << 16)
+ | (((GLuint) (rgba[i][GCOMP] * 255.0F)) << 8)
+ | (((GLuint) (rgba[i][RCOMP] * 255.0F)) );
+ }
+ }
+ break;
+ case GL_UNSIGNED_INT_8_8_8_8_REV:
+ if (dstFormat == GL_RGBA) {
+ GLuint *dst = (GLuint *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLuint) (rgba[i][RCOMP] * 255.0F)) )
+ | (((GLuint) (rgba[i][GCOMP] * 255.0F)) << 8)
+ | (((GLuint) (rgba[i][BCOMP] * 255.0F)) << 16)
+ | (((GLuint) (rgba[i][ACOMP] * 255.0F)) << 24);
+ }
+ }
+ else if (dstFormat == GL_BGRA) {
+ GLuint *dst = (GLuint *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLuint) (rgba[i][BCOMP] * 255.0F)) )
+ | (((GLuint) (rgba[i][GCOMP] * 255.0F)) << 8)
+ | (((GLuint) (rgba[i][RCOMP] * 255.0F)) << 16)
+ | (((GLuint) (rgba[i][ACOMP] * 255.0F)) << 24);
+ }
+ }
+ else if (dstFormat == GL_ABGR_EXT) {
+ GLuint *dst = (GLuint *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLuint) (rgba[i][ACOMP] * 255.0F)) )
+ | (((GLuint) (rgba[i][BCOMP] * 255.0F)) << 8)
+ | (((GLuint) (rgba[i][GCOMP] * 255.0F)) << 16)
+ | (((GLuint) (rgba[i][RCOMP] * 255.0F)) << 24);
+ }
+ }
+ break;
+ case GL_UNSIGNED_INT_10_10_10_2:
+ if (dstFormat == GL_RGBA) {
+ GLuint *dst = (GLuint *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLuint) (rgba[i][RCOMP] * 1023.0F)) << 22)
+ | (((GLuint) (rgba[i][GCOMP] * 1023.0F)) << 12)
+ | (((GLuint) (rgba[i][BCOMP] * 1023.0F)) << 2)
+ | (((GLuint) (rgba[i][ACOMP] * 3.0F)) );
+ }
+ }
+ else if (dstFormat == GL_BGRA) {
+ GLuint *dst = (GLuint *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLuint) (rgba[i][BCOMP] * 1023.0F)) << 22)
+ | (((GLuint) (rgba[i][GCOMP] * 1023.0F)) << 12)
+ | (((GLuint) (rgba[i][RCOMP] * 1023.0F)) << 2)
+ | (((GLuint) (rgba[i][ACOMP] * 3.0F)) );
+ }
+ }
+ else if (dstFormat == GL_ABGR_EXT) {
+ GLuint *dst = (GLuint *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLuint) (rgba[i][ACOMP] * 1023.0F)) << 22)
+ | (((GLuint) (rgba[i][BCOMP] * 1023.0F)) << 12)
+ | (((GLuint) (rgba[i][GCOMP] * 1023.0F)) << 2)
+ | (((GLuint) (rgba[i][RCOMP] * 3.0F)) );
+ }
+ }
+ break;
+ case GL_UNSIGNED_INT_2_10_10_10_REV:
+ if (dstFormat == GL_RGBA) {
+ GLuint *dst = (GLuint *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLuint) (rgba[i][RCOMP] * 1023.0F)) )
+ | (((GLuint) (rgba[i][GCOMP] * 1023.0F)) << 10)
+ | (((GLuint) (rgba[i][BCOMP] * 1023.0F)) << 20)
+ | (((GLuint) (rgba[i][ACOMP] * 3.0F)) << 30);
+ }
+ }
+ else if (dstFormat == GL_BGRA) {
+ GLuint *dst = (GLuint *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLuint) (rgba[i][BCOMP] * 1023.0F)) )
+ | (((GLuint) (rgba[i][GCOMP] * 1023.0F)) << 10)
+ | (((GLuint) (rgba[i][RCOMP] * 1023.0F)) << 20)
+ | (((GLuint) (rgba[i][ACOMP] * 3.0F)) << 30);
+ }
+ }
+ else if (dstFormat == GL_ABGR_EXT) {
+ GLuint *dst = (GLuint *) dstAddr;
+ for (i=0;i<n;i++) {
+ dst[i] = (((GLuint) (rgba[i][ACOMP] * 1023.0F)) )
+ | (((GLuint) (rgba[i][BCOMP] * 1023.0F)) << 10)
+ | (((GLuint) (rgba[i][GCOMP] * 1023.0F)) << 20)
+ | (((GLuint) (rgba[i][RCOMP] * 3.0F)) << 30);
+ }
+ }
+ break;
+ default:
+ _mesa_problem(ctx, "bad type in _mesa_pack_rgba_span_float");
}
}
+/*
+ * Pack the given RGBA span into client memory at 'dest' address
+ * in the given pixel format and type.
+ * Optionally apply the enabled pixel transfer ops.
+ * Pack into memory using the given packing params struct.
+ * This is used by glReadPixels and glGetTexImage?D()
+ * \param ctx - the context
+ * n - number of pixels in the span
+ * rgba - the pixels
+ * format - dest packing format
+ * type - dest packing data type
+ * destination - destination packing address
+ * packing - pixel packing parameters
+ * transferOps - bitmask of IMAGE_*_BIT operations to apply
+ */
+void
+_mesa_pack_rgba_span_chan( GLcontext *ctx,
+ GLuint n, CONST GLchan srcRgba[][4],
+ GLenum dstFormat, GLenum dstType,
+ GLvoid *dstAddr,
+ const struct gl_pixelstore_attrib *dstPacking,
+ GLuint transferOps)
+{
+ ASSERT((ctx->NewState & _NEW_PIXEL) == 0 || transferOps == 0);
+
+ /* Test for optimized case first */
+ if (transferOps == 0 && dstFormat == GL_RGBA && dstType == CHAN_TYPE) {
+ /* common simple case */
+ MEMCPY(dstAddr, srcRgba, n * 4 * sizeof(GLchan));
+ }
+ else if (transferOps == 0 && dstFormat == GL_RGB && dstType == CHAN_TYPE) {
+ /* common simple case */
+ GLuint i;
+ GLchan *dest = (GLchan *) dstAddr;
+ for (i = 0; i < n; i++) {
+ dest[0] = srcRgba[i][RCOMP];
+ dest[1] = srcRgba[i][GCOMP];
+ dest[2] = srcRgba[i][BCOMP];
+ dest += 3;
+ }
+ }
+ else if (transferOps == 0 && dstFormat == GL_RGBA && dstType == GL_UNSIGNED_BYTE) {
+ /* common simple case */
+ GLuint i;
+ GLubyte *dest = (GLubyte *) dstAddr;
+ for (i = 0; i < n; i++) {
+ dest[0] = CHAN_TO_UBYTE(srcRgba[i][RCOMP]);
+ dest[1] = CHAN_TO_UBYTE(srcRgba[i][GCOMP]);
+ dest[2] = CHAN_TO_UBYTE(srcRgba[i][BCOMP]);
+ dest[3] = CHAN_TO_UBYTE(srcRgba[i][ACOMP]);
+ dest += 4;
+ }
+ }
+ else {
+ /* general solution */
+ GLuint i;
+ DEFMARRAY(GLfloat, rgba, MAX_WIDTH, 4); /* mac 32k limitation */
+ CHECKARRAY(rgba, return); /* mac 32k limitation */
+
+ assert(n <= MAX_WIDTH);
+ /* convert color components to floating point */
+ for (i = 0; i < n; i++) {
+ rgba[i][RCOMP] = CHAN_TO_FLOAT(srcRgba[i][RCOMP]);
+ rgba[i][GCOMP] = CHAN_TO_FLOAT(srcRgba[i][GCOMP]);
+ rgba[i][BCOMP] = CHAN_TO_FLOAT(srcRgba[i][BCOMP]);
+ rgba[i][ACOMP] = CHAN_TO_FLOAT(srcRgba[i][ACOMP]);
+ }
+ _mesa_pack_rgba_span_float(ctx, n, (const GLfloat (*)[4]) rgba,
+ dstFormat, dstType, dstAddr,
+ dstPacking, transferOps);
+ UNDEFARRAY(rgba); /* mac 32k limitation */
+ }
+}
+
#define SWAP2BYTE(VALUE) \
{ \
srcType == GL_SHORT ||
srcType == GL_UNSIGNED_INT ||
srcType == GL_INT ||
+ srcType == GL_HALF_FLOAT_ARB ||
srcType == GL_FLOAT);
switch (srcType) {
}
else {
for (i = 0; i < n; i++)
- indexes[i] = (GLuint) s[i];
+ indexes[i] = (GLuint) s[i];
+ }
+ }
+ break;
+ case GL_HALF_FLOAT_ARB:
+ {
+ GLuint i;
+ const GLhalfARB *s = (const GLhalfARB *) src;
+ if (unpack->SwapBytes) {
+ for (i = 0; i < n; i++) {
+ GLhalfARB value = s[i];
+ SWAP2BYTE(value);
+ indexes[i] = (GLuint) _mesa_half_to_float(value);
+ }
+ }
+ else {
+ for (i = 0; i < n; i++)
+ indexes[i] = (GLuint) _mesa_half_to_float(s[i]);
}
}
break;
default:
- gl_problem(NULL, "bad srcType in extract_uint_indexes");
+ _mesa_problem(NULL, "bad srcType in extract_uint_indexes");
return;
}
}
-
/*
* This function extracts floating point RGBA values from arbitrary
* image data. srcFormat and srcType are the format and type parameters
* Args: n - number of pixels
* rgba - output colors
* srcFormat - format of incoming data
- * srcType - datatype of incoming data
+ * srcType - data type of incoming data
* src - source data pointer
* swapBytes - perform byteswapping of incoming data?
*/
srcType == GL_SHORT ||
srcType == GL_UNSIGNED_INT ||
srcType == GL_INT ||
+ srcType == GL_HALF_FLOAT_ARB ||
srcType == GL_FLOAT ||
srcType == GL_UNSIGNED_BYTE_3_3_2 ||
srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
alphaIndex = 0;
stride = 1;
break;
- case GL_LUMINANCE:
+ case GL_LUMINANCE:
redIndex = greenIndex = blueIndex = 0;
alphaIndex = -1;
stride = 1;
stride = 2;
break;
case GL_INTENSITY:
- redIndex = 0;
- greenIndex = blueIndex = alphaIndex = -1;
+ redIndex = greenIndex = blueIndex = alphaIndex = 0;
stride = 1;
break;
case GL_RGB:
greenIndex = 1;
blueIndex = 2;
alphaIndex = -1;
+ rComp = 0;
+ gComp = 1;
+ bComp = 2;
+ aComp = 3;
stride = 3;
break;
case GL_BGR:
greenIndex = 1;
blueIndex = 0;
alphaIndex = -1;
+ rComp = 2;
+ gComp = 1;
+ bComp = 0;
+ aComp = 3;
stride = 3;
break;
case GL_RGBA:
stride = 4;
break;
default:
- gl_problem(NULL, "bad srcFormat in extract float data");
+ _mesa_problem(NULL, "bad srcFormat in extract float data");
return;
}
PROCESS(blueIndex, BCOMP, 0.0F, GLfloat, (GLfloat));
PROCESS(alphaIndex, ACOMP, 1.0F, GLfloat, (GLfloat));
break;
+ case GL_HALF_FLOAT_ARB:
+ PROCESS(redIndex, RCOMP, 0.0F, GLhalfARB, _mesa_half_to_float);
+ PROCESS(greenIndex, GCOMP, 0.0F, GLhalfARB, _mesa_half_to_float);
+ PROCESS(blueIndex, BCOMP, 0.0F, GLhalfARB, _mesa_half_to_float);
+ PROCESS(alphaIndex, ACOMP, 1.0F, GLhalfARB, _mesa_half_to_float);
+ break;
case GL_UNSIGNED_BYTE_3_3_2:
{
const GLubyte *ubsrc = (const GLubyte *) src;
GLuint i;
for (i = 0; i < n; i ++) {
GLubyte p = ubsrc[i];
- rgba[i][RCOMP] = ((p >> 5) ) * (1.0F / 7.0F);
- rgba[i][GCOMP] = ((p >> 2) & 0x7) * (1.0F / 7.0F);
- rgba[i][BCOMP] = ((p ) & 0x3) * (1.0F / 3.0F);
- rgba[i][ACOMP] = 1.0F;
+ rgba[i][rComp] = ((p >> 5) ) * (1.0F / 7.0F);
+ rgba[i][gComp] = ((p >> 2) & 0x7) * (1.0F / 7.0F);
+ rgba[i][bComp] = ((p ) & 0x3) * (1.0F / 3.0F);
+ rgba[i][aComp] = 1.0F;
}
}
break;
GLuint i;
for (i = 0; i < n; i ++) {
GLubyte p = ubsrc[i];
- rgba[i][RCOMP] = ((p ) & 0x7) * (1.0F / 7.0F);
- rgba[i][GCOMP] = ((p >> 3) & 0x7) * (1.0F / 7.0F);
- rgba[i][BCOMP] = ((p >> 6) ) * (1.0F / 3.0F);
- rgba[i][ACOMP] = 1.0F;
+ rgba[i][rComp] = ((p ) & 0x7) * (1.0F / 7.0F);
+ rgba[i][gComp] = ((p >> 3) & 0x7) * (1.0F / 7.0F);
+ rgba[i][bComp] = ((p >> 6) ) * (1.0F / 3.0F);
+ rgba[i][aComp] = 1.0F;
}
}
break;
for (i = 0; i < n; i ++) {
GLushort p = ussrc[i];
SWAP2BYTE(p);
- rgba[i][RCOMP] = ((p >> 11) ) * (1.0F / 31.0F);
- rgba[i][GCOMP] = ((p >> 5) & 0x3f) * (1.0F / 63.0F);
- rgba[i][BCOMP] = ((p ) & 0x1f) * (1.0F / 31.0F);
- rgba[i][ACOMP] = 1.0F;
+ rgba[i][rComp] = ((p >> 11) ) * (1.0F / 31.0F);
+ rgba[i][gComp] = ((p >> 5) & 0x3f) * (1.0F / 63.0F);
+ rgba[i][bComp] = ((p ) & 0x1f) * (1.0F / 31.0F);
+ rgba[i][aComp] = 1.0F;
}
}
else {
GLuint i;
for (i = 0; i < n; i ++) {
GLushort p = ussrc[i];
- rgba[i][RCOMP] = ((p >> 11) ) * (1.0F / 31.0F);
- rgba[i][GCOMP] = ((p >> 5) & 0x3f) * (1.0F / 63.0F);
- rgba[i][BCOMP] = ((p ) & 0x1f) * (1.0F / 31.0F);
- rgba[i][ACOMP] = 1.0F;
+ rgba[i][rComp] = ((p >> 11) ) * (1.0F / 31.0F);
+ rgba[i][gComp] = ((p >> 5) & 0x3f) * (1.0F / 63.0F);
+ rgba[i][bComp] = ((p ) & 0x1f) * (1.0F / 31.0F);
+ rgba[i][aComp] = 1.0F;
}
}
break;
for (i = 0; i < n; i ++) {
GLushort p = ussrc[i];
SWAP2BYTE(p);
- rgba[i][RCOMP] = ((p ) & 0x1f) * (1.0F / 31.0F);
- rgba[i][GCOMP] = ((p >> 5) & 0x3f) * (1.0F / 63.0F);
- rgba[i][BCOMP] = ((p >> 11) ) * (1.0F / 31.0F);
- rgba[i][ACOMP] = 1.0F;
+ rgba[i][rComp] = ((p ) & 0x1f) * (1.0F / 31.0F);
+ rgba[i][gComp] = ((p >> 5) & 0x3f) * (1.0F / 63.0F);
+ rgba[i][bComp] = ((p >> 11) ) * (1.0F / 31.0F);
+ rgba[i][aComp] = 1.0F;
}
}
else {
GLuint i;
for (i = 0; i < n; i ++) {
GLushort p = ussrc[i];
- rgba[i][RCOMP] = ((p ) & 0x1f) * (1.0F / 31.0F);
- rgba[i][GCOMP] = ((p >> 5) & 0x3f) * (1.0F / 63.0F);
- rgba[i][BCOMP] = ((p >> 11) ) * (1.0F / 31.0F);
- rgba[i][ACOMP] = 1.0F;
+ rgba[i][rComp] = ((p ) & 0x1f) * (1.0F / 31.0F);
+ rgba[i][gComp] = ((p >> 5) & 0x3f) * (1.0F / 63.0F);
+ rgba[i][bComp] = ((p >> 11) ) * (1.0F / 31.0F);
+ rgba[i][aComp] = 1.0F;
}
}
break;
GLuint i;
for (i = 0; i < n; i ++) {
GLuint p = uisrc[i];
- rgba[i][rComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p ) & 0xff);
- rgba[i][gComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p >> 8) & 0xff);
- rgba[i][bComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p >> 16) & 0xff);
- rgba[i][aComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p >> 24) );
+ rgba[i][rComp] = UBYTE_TO_FLOAT((p ) & 0xff);
+ rgba[i][gComp] = UBYTE_TO_FLOAT((p >> 8) & 0xff);
+ rgba[i][bComp] = UBYTE_TO_FLOAT((p >> 16) & 0xff);
+ rgba[i][aComp] = UBYTE_TO_FLOAT((p >> 24) );
}
}
else {
GLuint i;
for (i = 0; i < n; i ++) {
GLuint p = uisrc[i];
- rgba[i][rComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p >> 24) );
- rgba[i][gComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p >> 16) & 0xff);
- rgba[i][bComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p >> 8) & 0xff);
- rgba[i][aComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p ) & 0xff);
+ rgba[i][rComp] = UBYTE_TO_FLOAT((p >> 24) );
+ rgba[i][gComp] = UBYTE_TO_FLOAT((p >> 16) & 0xff);
+ rgba[i][bComp] = UBYTE_TO_FLOAT((p >> 8) & 0xff);
+ rgba[i][aComp] = UBYTE_TO_FLOAT((p ) & 0xff);
}
}
break;
GLuint i;
for (i = 0; i < n; i ++) {
GLuint p = uisrc[i];
- rgba[i][rComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p >> 24) );
- rgba[i][gComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p >> 16) & 0xff);
- rgba[i][bComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p >> 8) & 0xff);
- rgba[i][aComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p ) & 0xff);
+ rgba[i][rComp] = UBYTE_TO_FLOAT((p >> 24) );
+ rgba[i][gComp] = UBYTE_TO_FLOAT((p >> 16) & 0xff);
+ rgba[i][bComp] = UBYTE_TO_FLOAT((p >> 8) & 0xff);
+ rgba[i][aComp] = UBYTE_TO_FLOAT((p ) & 0xff);
}
}
else {
GLuint i;
for (i = 0; i < n; i ++) {
GLuint p = uisrc[i];
- rgba[i][rComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p ) & 0xff);
- rgba[i][gComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p >> 8) & 0xff);
- rgba[i][bComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p >> 16) & 0xff);
- rgba[i][aComp] = UBYTE_COLOR_TO_FLOAT_COLOR((p >> 24) );
+ rgba[i][rComp] = UBYTE_TO_FLOAT((p ) & 0xff);
+ rgba[i][gComp] = UBYTE_TO_FLOAT((p >> 8) & 0xff);
+ rgba[i][bComp] = UBYTE_TO_FLOAT((p >> 16) & 0xff);
+ rgba[i][aComp] = UBYTE_TO_FLOAT((p >> 24) );
}
}
break;
}
break;
default:
- gl_problem(NULL, "bad srcType in extract float data");
+ _mesa_problem(NULL, "bad srcType in extract float data");
break;
}
}
-
/*
* Unpack a row of color image data from a client buffer according to
- * the pixel unpacking parameters. Apply any enabled pixel transfer
- * ops (PixelMap, scale/bias) if the applyTransferOps flag is enabled.
- * Return GLubyte values in the specified dest image format.
- * This is (or will be) used by glDrawPixels and glTexImage?D().
- * Input: ctx - the context
+ * the pixel unpacking parameters.
+ * Return GLchan values in the specified dest image format.
+ * This is used by glDrawPixels and glTexImage?D().
+ * \param ctx - the context
* n - number of pixels in the span
* dstFormat - format of destination color array
* dest - the destination color array
* srcFormat - source image format
- * srcType - source image datatype
+ * srcType - source image data type
* source - source image pointer
- * unpacking - pixel unpacking parameters
- * applyTransferOps - apply scale/bias/lookup-table ops?
+ * srcPacking - pixel unpacking parameters
+ * transferOps - bitmask of IMAGE_*_BIT values of operations to apply
*
* XXX perhaps expand this to process whole images someday.
*/
void
-_mesa_unpack_ubyte_color_span( GLcontext *ctx,
- GLuint n, GLenum dstFormat, GLubyte dest[],
- GLenum srcFormat, GLenum srcType,
- const GLvoid *source,
- const struct gl_pixelstore_attrib *unpacking,
- GLboolean applyTransferOps )
+_mesa_unpack_color_span_chan( GLcontext *ctx,
+ GLuint n, GLenum dstFormat, GLchan dest[],
+ GLenum srcFormat, GLenum srcType,
+ const GLvoid *source,
+ const struct gl_pixelstore_attrib *srcPacking,
+ GLuint transferOps )
{
ASSERT(dstFormat == GL_ALPHA ||
- dstFormat == GL_LUMINANCE ||
+ dstFormat == GL_LUMINANCE ||
dstFormat == GL_LUMINANCE_ALPHA ||
dstFormat == GL_INTENSITY ||
dstFormat == GL_RGB ||
srcType == GL_SHORT ||
srcType == GL_UNSIGNED_INT ||
srcType == GL_INT ||
+ srcType == GL_HALF_FLOAT_ARB ||
srcType == GL_FLOAT ||
srcType == GL_UNSIGNED_BYTE_3_3_2 ||
srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
srcType == GL_UNSIGNED_INT_10_10_10_2 ||
srcType == GL_UNSIGNED_INT_2_10_10_10_REV);
- /* this is intended for RGBA mode only */
- assert(ctx->Visual->RGBAflag);
-
- applyTransferOps &= (ctx->Pixel.ScaleOrBiasRGBA ||
- ctx->Pixel.MapColorFlag ||
- ctx->ColorMatrix.type != MATRIX_IDENTITY ||
- ctx->Pixel.ScaleOrBiasRGBApcm ||
- ctx->Pixel.ColorTableEnabled ||
- ctx->Pixel.PostColorMatrixColorTableEnabled ||
- ctx->Pixel.PostConvolutionColorTableEnabled ||
- ctx->Pixel.MinMaxEnabled ||
- ctx->Pixel.HistogramEnabled);
-
/* Try simple cases first */
- if (!applyTransferOps && srcType == GL_UNSIGNED_BYTE) {
- if (dstFormat == GL_RGBA) {
- if (srcFormat == GL_RGBA) {
- MEMCPY( dest, source, n * 4 * sizeof(GLubyte) );
- return;
+ if (transferOps == 0) {
+ if (srcType == CHAN_TYPE) {
+ if (dstFormat == GL_RGBA) {
+ if (srcFormat == GL_RGBA) {
+ MEMCPY( dest, source, n * 4 * sizeof(GLchan) );
+ return;
+ }
+ else if (srcFormat == GL_RGB) {
+ GLuint i;
+ const GLchan *src = (const GLchan *) source;
+ GLchan *dst = dest;
+ for (i = 0; i < n; i++) {
+ dst[0] = src[0];
+ dst[1] = src[1];
+ dst[2] = src[2];
+ dst[3] = CHAN_MAX;
+ src += 3;
+ dst += 4;
+ }
+ return;
+ }
}
- else if (srcFormat == GL_RGB) {
- GLuint i;
- const GLubyte *src = (const GLubyte *) source;
- GLubyte *dst = dest;
- for (i = 0; i < n; i++) {
- dst[0] = src[0];
- dst[1] = src[1];
- dst[2] = src[2];
- dst[3] = 255;
- src += 3;
- dst += 4;
+ else if (dstFormat == GL_RGB) {
+ if (srcFormat == GL_RGB) {
+ MEMCPY( dest, source, n * 3 * sizeof(GLchan) );
+ return;
+ }
+ else if (srcFormat == GL_RGBA) {
+ GLuint i;
+ const GLchan *src = (const GLchan *) source;
+ GLchan *dst = dest;
+ for (i = 0; i < n; i++) {
+ dst[0] = src[0];
+ dst[1] = src[1];
+ dst[2] = src[2];
+ src += 4;
+ dst += 3;
+ }
+ return;
}
+ }
+ else if (dstFormat == srcFormat) {
+ GLint comps = _mesa_components_in_format(srcFormat);
+ assert(comps > 0);
+ MEMCPY( dest, source, n * comps * sizeof(GLchan) );
return;
}
}
- else if (dstFormat == GL_RGB) {
- if (srcFormat == GL_RGB) {
- MEMCPY( dest, source, n * 3 * sizeof(GLubyte) );
- return;
+ /*
+ * Common situation, loading 8bit RGBA/RGB source images
+ * into 16/32 bit destination. (OSMesa16/32)
+ */
+ else if (srcType == GL_UNSIGNED_BYTE) {
+ if (dstFormat == GL_RGBA) {
+ if (srcFormat == GL_RGB) {
+ GLuint i;
+ const GLubyte *src = (const GLubyte *) source;
+ GLchan *dst = dest;
+ for (i = 0; i < n; i++) {
+ dst[0] = UBYTE_TO_CHAN(src[0]);
+ dst[1] = UBYTE_TO_CHAN(src[1]);
+ dst[2] = UBYTE_TO_CHAN(src[2]);
+ dst[3] = CHAN_MAX;
+ src += 3;
+ dst += 4;
+ }
+ return;
+ }
+ else if (srcFormat == GL_RGBA) {
+ GLuint i;
+ const GLubyte *src = (const GLubyte *) source;
+ GLchan *dst = dest;
+ for (i = 0; i < n; i++) {
+ dst[0] = UBYTE_TO_CHAN(src[0]);
+ dst[1] = UBYTE_TO_CHAN(src[1]);
+ dst[2] = UBYTE_TO_CHAN(src[2]);
+ dst[3] = UBYTE_TO_CHAN(src[3]);
+ src += 4;
+ dst += 4;
+ }
+ return;
+ }
}
- else if (srcFormat == GL_RGBA) {
- GLuint i;
- const GLubyte *src = (const GLubyte *) source;
- GLubyte *dst = dest;
- for (i = 0; i < n; i++) {
- dst[0] = src[0];
- dst[1] = src[1];
- dst[2] = src[2];
- src += 4;
- dst += 3;
+ else if (dstFormat == GL_RGB) {
+ if (srcFormat == GL_RGB) {
+ GLuint i;
+ const GLubyte *src = (const GLubyte *) source;
+ GLchan *dst = dest;
+ for (i = 0; i < n; i++) {
+ dst[0] = UBYTE_TO_CHAN(src[0]);
+ dst[1] = UBYTE_TO_CHAN(src[1]);
+ dst[2] = UBYTE_TO_CHAN(src[2]);
+ src += 3;
+ dst += 3;
+ }
+ return;
+ }
+ else if (srcFormat == GL_RGBA) {
+ GLuint i;
+ const GLubyte *src = (const GLubyte *) source;
+ GLchan *dst = dest;
+ for (i = 0; i < n; i++) {
+ dst[0] = UBYTE_TO_CHAN(src[0]);
+ dst[1] = UBYTE_TO_CHAN(src[1]);
+ dst[2] = UBYTE_TO_CHAN(src[2]);
+ src += 4;
+ dst += 3;
+ }
+ return;
}
- return;
}
}
- else if (dstFormat == srcFormat) {
- GLint comps = _mesa_components_in_format(srcFormat);
- assert(comps > 0);
- MEMCPY( dest, source, n * comps * sizeof(GLubyte) );
- return;
- }
}
/* general solution begins here */
{
- GLfloat rgba[MAX_WIDTH][4];
GLint dstComponents;
GLint dstRedIndex, dstGreenIndex, dstBlueIndex, dstAlphaIndex;
GLint dstLuminanceIndex, dstIntensityIndex;
+ DEFMARRAY(GLfloat, rgba, MAX_WIDTH, 4); /* mac 32k limitation */
+ CHECKARRAY(rgba, return); /* mac 32k limitation */
dstComponents = _mesa_components_in_format( dstFormat );
/* source & dest image formats should have been error checked by now */
if (srcFormat == GL_COLOR_INDEX) {
GLuint indexes[MAX_WIDTH];
extract_uint_indexes(n, indexes, srcFormat, srcType, source,
- unpacking);
+ srcPacking);
- if (applyTransferOps) {
- if (ctx->Pixel.MapColorFlag) {
- _mesa_map_ci(ctx, n, indexes);
- }
- if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset) {
- _mesa_shift_and_offset_ci(ctx, n, indexes);
- }
+ if (dstFormat == GL_COLOR_INDEX
+ && (transferOps & IMAGE_MAP_COLOR_BIT)) {
+ _mesa_map_ci(ctx, n, indexes);
+ }
+ if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
+ _mesa_shift_and_offset_ci(ctx, n, indexes);
}
if (dstFormat == GL_COLOR_INDEX) {
- /* convert to GLubyte and return */
+ /* convert to GLchan and return */
GLuint i;
for (i = 0; i < n; i++) {
- dest[i] = (GLubyte) (indexes[i] & 0xff);
+ dest[i] = (GLchan) (indexes[i] & 0xff);
}
+ UNDEFARRAY(rgba); /* mac 32k limitation */
return;
}
else {
/* Convert indexes to RGBA */
_mesa_map_ci_to_rgba(ctx, n, indexes, rgba);
}
+
+ /* Don't do RGBA scale/bias or RGBA->RGBA mapping if starting
+ * with color indexes.
+ */
+ transferOps &= ~(IMAGE_SCALE_BIAS_BIT | IMAGE_MAP_COLOR_BIT);
}
else {
+ /* non-color index data */
extract_float_rgba(n, rgba, srcFormat, srcType, source,
- unpacking->SwapBytes);
-
- if (applyTransferOps) {
- /* scale and bias colors */
- if (ctx->Pixel.ScaleOrBiasRGBA) {
- _mesa_scale_and_bias_rgba(ctx, n, rgba);
- }
- /* color map lookup */
- if (ctx->Pixel.MapColorFlag) {
- _mesa_map_rgba(ctx, n, rgba);
- }
- }
+ srcPacking->SwapBytes);
}
- if (applyTransferOps) {
- /* GL_COLOR_TABLE lookup */
- if (ctx->Pixel.ColorTableEnabled) {
- _mesa_lookup_rgba(&ctx->ColorTable, n, rgba);
- }
- /* XXX convolution here */
- /* GL_POST_CONVOLUTION_COLOR_TABLE lookup */
- if (ctx->Pixel.PostConvolutionColorTableEnabled) {
- _mesa_lookup_rgba(&ctx->PostConvolutionColorTable, n, rgba);
- }
- /* color matrix transform */
- if (ctx->ColorMatrix.type != MATRIX_IDENTITY ||
- ctx->Pixel.ScaleOrBiasRGBApcm) {
- _mesa_transform_rgba(ctx, n, rgba);
- }
- /* GL_POST_COLOR_MATRIX_COLOR_TABLE lookup */
- if (ctx->Pixel.PostColorMatrixColorTableEnabled) {
- _mesa_lookup_rgba(&ctx->PostColorMatrixColorTable, n, rgba);
- }
- /* update histogram count */
- if (ctx->Pixel.HistogramEnabled) {
- _mesa_update_histogram(ctx, n, (CONST GLfloat (*)[4]) rgba);
- }
- /* XXX min/max here */
- if (ctx->Pixel.MinMaxEnabled) {
- _mesa_update_minmax(ctx, n, (CONST GLfloat (*)[4]) rgba);
- }
- }
+ /* Need to clamp if returning GLubytes or GLushorts */
+#if CHAN_TYPE != GL_FLOAT
+ transferOps |= IMAGE_CLAMP_BIT;
+#endif
- /* clamp to [0,1] */
- {
- GLuint i;
- for (i = 0; i < n; i++) {
- rgba[i][RCOMP] = CLAMP(rgba[i][RCOMP], 0.0F, 1.0F);
- rgba[i][GCOMP] = CLAMP(rgba[i][GCOMP], 0.0F, 1.0F);
- rgba[i][BCOMP] = CLAMP(rgba[i][BCOMP], 0.0F, 1.0F);
- rgba[i][ACOMP] = CLAMP(rgba[i][ACOMP], 0.0F, 1.0F);
- }
+ if (transferOps) {
+ _mesa_apply_rgba_transfer_ops(ctx, transferOps, n, rgba);
}
/* Now determine which color channels we need to produce.
dstRedIndex = dstGreenIndex = dstBlueIndex = -1;
dstLuminanceIndex = dstIntensityIndex = -1;
break;
- case GL_LUMINANCE:
+ case GL_LUMINANCE:
dstLuminanceIndex = 0;
dstRedIndex = dstGreenIndex = dstBlueIndex = dstAlphaIndex = -1;
dstIntensityIndex = -1;
dstLuminanceIndex = dstIntensityIndex = -1;
break;
default:
- gl_problem(ctx, "bad dstFormat in _mesa_unpack_ubyte_span()");
+ _mesa_problem(ctx, "bad dstFormat in _mesa_unpack_chan_span()");
+ UNDEFARRAY(rgba); /* mac 32k limitation */
return;
}
- /* Now return the GLubyte data in the requested dstFormat */
+ /* Now return the GLchan data in the requested dstFormat */
if (dstRedIndex >= 0) {
- GLubyte *dst = dest;
+ GLchan *dst = dest;
GLuint i;
for (i = 0; i < n; i++) {
- dst[dstRedIndex] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
+ CLAMPED_FLOAT_TO_CHAN(dst[dstRedIndex], rgba[i][RCOMP]);
dst += dstComponents;
}
}
if (dstGreenIndex >= 0) {
- GLubyte *dst = dest;
+ GLchan *dst = dest;
GLuint i;
for (i = 0; i < n; i++) {
- dst[dstGreenIndex] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
+ CLAMPED_FLOAT_TO_CHAN(dst[dstGreenIndex], rgba[i][GCOMP]);
dst += dstComponents;
}
}
if (dstBlueIndex >= 0) {
- GLubyte *dst = dest;
+ GLchan *dst = dest;
GLuint i;
for (i = 0; i < n; i++) {
- dst[dstBlueIndex] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
+ CLAMPED_FLOAT_TO_CHAN(dst[dstBlueIndex], rgba[i][BCOMP]);
dst += dstComponents;
}
}
if (dstAlphaIndex >= 0) {
- GLubyte *dst = dest;
+ GLchan *dst = dest;
GLuint i;
for (i = 0; i < n; i++) {
- dst[dstAlphaIndex] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
+ CLAMPED_FLOAT_TO_CHAN(dst[dstAlphaIndex], rgba[i][ACOMP]);
dst += dstComponents;
}
}
if (dstIntensityIndex >= 0) {
- GLubyte *dst = dest;
+ GLchan *dst = dest;
GLuint i;
assert(dstIntensityIndex == 0);
assert(dstComponents == 1);
for (i = 0; i < n; i++) {
/* Intensity comes from red channel */
- dst[i] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
+ CLAMPED_FLOAT_TO_CHAN(dst[i], rgba[i][RCOMP]);
}
}
if (dstLuminanceIndex >= 0) {
- GLubyte *dst = dest;
+ GLchan *dst = dest;
GLuint i;
assert(dstLuminanceIndex == 0);
for (i = 0; i < n; i++) {
/* Luminance comes from red channel */
- dst[0] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
+ CLAMPED_FLOAT_TO_CHAN(dst[0], rgba[i][RCOMP]);
dst += dstComponents;
}
}
+ UNDEFARRAY(rgba); /* mac 32k limitation */
}
}
+/**
+ * Same as _mesa_unpack_color_span_chan(), but return GLfloat data
+ * instead of GLchan.
+ */
void
-_mesa_unpack_float_color_span( GLcontext *ctx,
+_mesa_unpack_color_span_float( GLcontext *ctx,
GLuint n, GLenum dstFormat, GLfloat dest[],
GLenum srcFormat, GLenum srcType,
const GLvoid *source,
- const struct gl_pixelstore_attrib *unpacking,
- GLboolean applyTransferOps, GLboolean clamp )
+ const struct gl_pixelstore_attrib *srcPacking,
+ GLuint transferOps )
{
ASSERT(dstFormat == GL_ALPHA ||
- dstFormat == GL_LUMINANCE ||
+ dstFormat == GL_LUMINANCE ||
dstFormat == GL_LUMINANCE_ALPHA ||
dstFormat == GL_INTENSITY ||
dstFormat == GL_RGB ||
srcType == GL_SHORT ||
srcType == GL_UNSIGNED_INT ||
srcType == GL_INT ||
+ srcType == GL_HALF_FLOAT_ARB ||
srcType == GL_FLOAT ||
srcType == GL_UNSIGNED_BYTE_3_3_2 ||
srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
srcType == GL_UNSIGNED_INT_10_10_10_2 ||
srcType == GL_UNSIGNED_INT_2_10_10_10_REV);
- /* this is intended for RGBA mode only */
- assert(ctx->Visual->RGBAflag);
-
- applyTransferOps &= (ctx->Pixel.ScaleOrBiasRGBA ||
- ctx->Pixel.MapColorFlag ||
- ctx->ColorMatrix.type != MATRIX_IDENTITY ||
- ctx->Pixel.ScaleOrBiasRGBApcm ||
- ctx->Pixel.ColorTableEnabled ||
- ctx->Pixel.PostColorMatrixColorTableEnabled ||
- ctx->Pixel.PostConvolutionColorTableEnabled ||
- ctx->Pixel.MinMaxEnabled ||
- ctx->Pixel.HistogramEnabled);
-
/* general solution, no special cases, yet */
{
- GLfloat rgba[MAX_WIDTH][4];
GLint dstComponents;
GLint dstRedIndex, dstGreenIndex, dstBlueIndex, dstAlphaIndex;
GLint dstLuminanceIndex, dstIntensityIndex;
+ DEFMARRAY(GLfloat, rgba, MAX_WIDTH, 4); /* mac 32k limitation */
+ CHECKARRAY(rgba, return); /* mac 32k limitation */
dstComponents = _mesa_components_in_format( dstFormat );
/* source & dest image formats should have been error checked by now */
if (srcFormat == GL_COLOR_INDEX) {
GLuint indexes[MAX_WIDTH];
extract_uint_indexes(n, indexes, srcFormat, srcType, source,
- unpacking);
+ srcPacking);
- if (applyTransferOps) {
- if (ctx->Pixel.MapColorFlag) {
- _mesa_map_ci(ctx, n, indexes);
- }
- if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset) {
- _mesa_shift_and_offset_ci(ctx, n, indexes);
- }
+ if (dstFormat == GL_COLOR_INDEX
+ && (transferOps & IMAGE_MAP_COLOR_BIT)) {
+ _mesa_map_ci(ctx, n, indexes);
+ }
+ if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
+ _mesa_shift_and_offset_ci(ctx, n, indexes);
}
if (dstFormat == GL_COLOR_INDEX) {
- /* convert to GLubyte and return */
+ /* convert to GLchan and return */
GLuint i;
for (i = 0; i < n; i++) {
- dest[i] = (GLubyte) (indexes[i] & 0xff);
+ dest[i] = (GLchan) (indexes[i] & 0xff);
}
+ UNDEFARRAY(rgba); /* mac 32k limitation */
return;
}
else {
/* Convert indexes to RGBA */
_mesa_map_ci_to_rgba(ctx, n, indexes, rgba);
}
+
+ /* Don't do RGBA scale/bias or RGBA->RGBA mapping if starting
+ * with color indexes.
+ */
+ transferOps &= ~(IMAGE_SCALE_BIAS_BIT | IMAGE_MAP_COLOR_BIT);
}
else {
+ /* non-color index data */
extract_float_rgba(n, rgba, srcFormat, srcType, source,
- unpacking->SwapBytes);
-
- if (applyTransferOps) {
- /* scale and bias colors */
- if (ctx->Pixel.ScaleOrBiasRGBA) {
- _mesa_scale_and_bias_rgba(ctx, n, rgba);
- }
- /* color map lookup */
- if (ctx->Pixel.MapColorFlag) {
- _mesa_map_rgba(ctx, n, rgba);
- }
- }
- }
-
- if (applyTransferOps) {
- /* GL_COLOR_TABLE lookup */
- if (ctx->Pixel.ColorTableEnabled) {
- _mesa_lookup_rgba(&ctx->ColorTable, n, rgba);
- }
- /* XXX convolution here */
- /* GL_POST_CONVOLUTION_COLOR_TABLE lookup */
- if (ctx->Pixel.PostConvolutionColorTableEnabled) {
- _mesa_lookup_rgba(&ctx->PostConvolutionColorTable, n, rgba);
- }
- /* color matrix transform */
- if (ctx->ColorMatrix.type != MATRIX_IDENTITY ||
- ctx->Pixel.ScaleOrBiasRGBApcm) {
- _mesa_transform_rgba(ctx, n, rgba);
- }
- /* GL_POST_COLOR_MATRIX_COLOR_TABLE lookup */
- if (ctx->Pixel.PostColorMatrixColorTableEnabled) {
- _mesa_lookup_rgba(&ctx->PostColorMatrixColorTable, n, rgba);
- }
- /* update histogram count */
- if (ctx->Pixel.HistogramEnabled) {
- _mesa_update_histogram(ctx, n, (CONST GLfloat (*)[4]) rgba);
- }
- /* XXX min/max here */
- if (ctx->Pixel.MinMaxEnabled) {
- _mesa_update_minmax(ctx, n, (CONST GLfloat (*)[4]) rgba);
- }
+ srcPacking->SwapBytes);
}
- /* clamp to [0,1] */
- if (clamp) {
- GLuint i;
- for (i = 0; i < n; i++) {
- rgba[i][RCOMP] = CLAMP(rgba[i][RCOMP], 0.0F, 1.0F);
- rgba[i][GCOMP] = CLAMP(rgba[i][GCOMP], 0.0F, 1.0F);
- rgba[i][BCOMP] = CLAMP(rgba[i][BCOMP], 0.0F, 1.0F);
- rgba[i][ACOMP] = CLAMP(rgba[i][ACOMP], 0.0F, 1.0F);
- }
+ if (transferOps) {
+ _mesa_apply_rgba_transfer_ops(ctx, transferOps, n, rgba);
}
/* Now determine which color channels we need to produce.
dstRedIndex = dstGreenIndex = dstBlueIndex = -1;
dstLuminanceIndex = dstIntensityIndex = -1;
break;
- case GL_LUMINANCE:
+ case GL_LUMINANCE:
dstLuminanceIndex = 0;
dstRedIndex = dstGreenIndex = dstBlueIndex = dstAlphaIndex = -1;
dstIntensityIndex = -1;
dstLuminanceIndex = dstIntensityIndex = -1;
break;
default:
- gl_problem(ctx, "bad dstFormat in _mesa_unpack_float_span()");
+ _mesa_problem(ctx, "bad dstFormat in _mesa_unpack_color_span_float()");
+ UNDEFARRAY(rgba); /* mac 32k limitation */
return;
}
- /* Now pack results in teh requested dstFormat */
+ /* Now pack results in the requested dstFormat */
if (dstRedIndex >= 0) {
GLfloat *dst = dest;
GLuint i;
dst += dstComponents;
}
}
+ UNDEFARRAY(rgba); /* mac 32k limitation */
}
}
-
-
/*
* Unpack a row of color index data from a client buffer according to
- * the pixel unpacking parameters. Apply pixel transfer ops if enabled
- * and applyTransferOps is true.
+ * the pixel unpacking parameters.
* This is (or will be) used by glDrawPixels, glTexImage[123]D, etc.
*
* Args: ctx - the context
* n - number of pixels
- * dstType - destination datatype
+ * dstType - destination data type
* dest - destination array
* srcType - source pixel type
* source - source data pointer
- * unpacking - pixel unpacking parameters
- * applyTransferOps - apply offset/bias/lookup ops?
+ * srcPacking - pixel unpacking parameters
+ * transferOps - the pixel transfer operations to apply
*/
void
_mesa_unpack_index_span( const GLcontext *ctx, GLuint n,
GLenum dstType, GLvoid *dest,
GLenum srcType, const GLvoid *source,
- const struct gl_pixelstore_attrib *unpacking,
- GLboolean applyTransferOps )
+ const struct gl_pixelstore_attrib *srcPacking,
+ GLuint transferOps )
{
ASSERT(srcType == GL_BITMAP ||
srcType == GL_UNSIGNED_BYTE ||
srcType == GL_SHORT ||
srcType == GL_UNSIGNED_INT ||
srcType == GL_INT ||
+ srcType == GL_HALF_FLOAT_ARB ||
srcType == GL_FLOAT);
ASSERT(dstType == GL_UNSIGNED_BYTE ||
dstType == GL_UNSIGNED_SHORT ||
dstType == GL_UNSIGNED_INT);
- applyTransferOps &= (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset || ctx->Pixel.MapColorFlag);
+
+ transferOps &= (IMAGE_MAP_COLOR_BIT | IMAGE_SHIFT_OFFSET_BIT);
/*
* Try simple cases first
*/
- if (!applyTransferOps && srcType == GL_UNSIGNED_BYTE
+ if (transferOps == 0 && srcType == GL_UNSIGNED_BYTE
&& dstType == GL_UNSIGNED_BYTE) {
MEMCPY(dest, source, n * sizeof(GLubyte));
}
- else if (!applyTransferOps && srcType == GL_UNSIGNED_INT
- && dstType == GL_UNSIGNED_INT && !unpacking->SwapBytes) {
+ else if (transferOps == 0 && srcType == GL_UNSIGNED_INT
+ && dstType == GL_UNSIGNED_INT && !srcPacking->SwapBytes) {
MEMCPY(dest, source, n * sizeof(GLuint));
}
else {
assert(n <= MAX_WIDTH);
extract_uint_indexes(n, indexes, GL_COLOR_INDEX, srcType, source,
- unpacking);
+ srcPacking);
- if (applyTransferOps) {
- if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset) {
- /* shift and offset indexes */
- _mesa_shift_and_offset_ci(ctx, n, indexes);
- }
- if (ctx->Pixel.MapColorFlag) {
- /* Apply lookup table */
- _mesa_map_ci(ctx, n, indexes);
- }
+ if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
+ /* shift and offset indexes */
+ _mesa_shift_and_offset_ci(ctx, n, indexes);
+ }
+ if (transferOps & IMAGE_MAP_COLOR_BIT) {
+ /* Apply lookup table */
+ _mesa_map_ci(ctx, n, indexes);
}
/* convert to dest type */
MEMCPY(dest, indexes, n * sizeof(GLuint));
break;
default:
- gl_problem(ctx, "bad dstType in _mesa_unpack_index_span");
+ _mesa_problem(ctx, "bad dstType in _mesa_unpack_index_span");
+ }
+ }
+}
+
+
+void
+_mesa_pack_index_span( const GLcontext *ctx, GLuint n,
+ GLenum dstType, GLvoid *dest, const GLuint *source,
+ const struct gl_pixelstore_attrib *dstPacking,
+ GLuint transferOps )
+{
+ GLuint indexes[MAX_WIDTH];
+
+ ASSERT(n <= MAX_WIDTH);
+
+ transferOps &= (IMAGE_MAP_COLOR_BIT | IMAGE_SHIFT_OFFSET_BIT);
+
+ if (transferOps & (IMAGE_MAP_COLOR_BIT | IMAGE_SHIFT_OFFSET_BIT)) {
+ /* make a copy of input */
+ MEMCPY(indexes, source, n * sizeof(GLuint));
+ if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
+ _mesa_shift_and_offset_ci( ctx, n, indexes);
+ }
+ if (transferOps & IMAGE_MAP_COLOR_BIT) {
+ _mesa_map_ci(ctx, n, indexes);
+ }
+ source = indexes;
+ }
+
+ switch (dstType) {
+ case GL_UNSIGNED_BYTE:
+ {
+ GLubyte *dst = (GLubyte *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ *dst++ = (GLubyte) source[i];
+ }
+ }
+ break;
+ case GL_BYTE:
+ {
+ GLbyte *dst = (GLbyte *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = (GLbyte) source[i];
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT:
+ {
+ GLushort *dst = (GLushort *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = (GLushort) source[i];
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap2( (GLushort *) dst, n );
+ }
+ }
+ break;
+ case GL_SHORT:
+ {
+ GLshort *dst = (GLshort *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = (GLshort) source[i];
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap2( (GLushort *) dst, n );
+ }
}
+ break;
+ case GL_UNSIGNED_INT:
+ {
+ GLuint *dst = (GLuint *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = (GLuint) source[i];
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap4( (GLuint *) dst, n );
+ }
+ }
+ break;
+ case GL_INT:
+ {
+ GLint *dst = (GLint *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = (GLint) source[i];
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap4( (GLuint *) dst, n );
+ }
+ }
+ break;
+ case GL_FLOAT:
+ {
+ GLfloat *dst = (GLfloat *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = (GLfloat) source[i];
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap4( (GLuint *) dst, n );
+ }
+ }
+ break;
+ case GL_HALF_FLOAT_ARB:
+ {
+ GLhalfARB *dst = (GLhalfARB *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = _mesa_float_to_half((GLfloat) source[i]);
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap2( (GLushort *) dst, n );
+ }
+ }
+ break;
+ default:
+ _mesa_problem(ctx, "bad type in _mesa_pack_index_span");
}
}
/*
* Unpack a row of stencil data from a client buffer according to
- * the pixel unpacking parameters. Apply pixel transfer ops if enabled
- * and applyTransferOps is true.
+ * the pixel unpacking parameters.
* This is (or will be) used by glDrawPixels
*
* Args: ctx - the context
* n - number of pixels
- * dstType - destination datatype
+ * dstType - destination data type
* dest - destination array
* srcType - source pixel type
* source - source data pointer
- * unpacking - pixel unpacking parameters
- * applyTransferOps - apply offset/bias/lookup ops?
+ * srcPacking - pixel unpacking parameters
+ * transferOps - apply offset/bias/lookup ops?
*/
void
_mesa_unpack_stencil_span( const GLcontext *ctx, GLuint n,
GLenum dstType, GLvoid *dest,
GLenum srcType, const GLvoid *source,
- const struct gl_pixelstore_attrib *unpacking,
- GLboolean applyTransferOps )
+ const struct gl_pixelstore_attrib *srcPacking,
+ GLuint transferOps )
{
ASSERT(srcType == GL_BITMAP ||
srcType == GL_UNSIGNED_BYTE ||
srcType == GL_SHORT ||
srcType == GL_UNSIGNED_INT ||
srcType == GL_INT ||
+ srcType == GL_HALF_FLOAT_ARB ||
srcType == GL_FLOAT);
ASSERT(dstType == GL_UNSIGNED_BYTE ||
dstType == GL_UNSIGNED_SHORT ||
dstType == GL_UNSIGNED_INT);
- applyTransferOps &= (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset || ctx->Pixel.MapColorFlag);
+ /* only shift and offset apply to stencil */
+ transferOps &= IMAGE_SHIFT_OFFSET_BIT;
/*
* Try simple cases first
*/
- if (!applyTransferOps && srcType == GL_UNSIGNED_BYTE
- && dstType == GL_UNSIGNED_BYTE) {
+ if (transferOps == 0 &&
+ srcType == GL_UNSIGNED_BYTE &&
+ dstType == GL_UNSIGNED_BYTE) {
MEMCPY(dest, source, n * sizeof(GLubyte));
}
- else if (!applyTransferOps && srcType == GL_UNSIGNED_INT
- && dstType == GL_UNSIGNED_INT && !unpacking->SwapBytes) {
+ else if (transferOps == 0 &&
+ srcType == GL_UNSIGNED_INT &&
+ dstType == GL_UNSIGNED_INT &&
+ !srcPacking->SwapBytes) {
MEMCPY(dest, source, n * sizeof(GLuint));
}
else {
assert(n <= MAX_WIDTH);
extract_uint_indexes(n, indexes, GL_COLOR_INDEX, srcType, source,
- unpacking);
+ srcPacking);
- if (applyTransferOps) {
- if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset) {
+ if (transferOps) {
+ if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
/* shift and offset indexes */
_mesa_shift_and_offset_ci(ctx, n, indexes);
}
dst[i] = (GLushort) (indexes[i] & 0xffff);
}
}
- break;
- case GL_UNSIGNED_INT:
- MEMCPY(dest, indexes, n * sizeof(GLuint));
- break;
- default:
- gl_problem(ctx, "bad dstType in _mesa_unpack_stencil_span");
+ break;
+ case GL_UNSIGNED_INT:
+ MEMCPY(dest, indexes, n * sizeof(GLuint));
+ break;
+ default:
+ _mesa_problem(ctx, "bad dstType in _mesa_unpack_stencil_span");
+ }
+ }
+}
+
+
+void
+_mesa_pack_stencil_span( const GLcontext *ctx, GLuint n,
+ GLenum dstType, GLvoid *dest, const GLstencil *source,
+ const struct gl_pixelstore_attrib *dstPacking )
+{
+ GLstencil stencil[MAX_WIDTH];
+
+ ASSERT(n <= MAX_WIDTH);
+
+ if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset ||
+ ctx->Pixel.MapStencilFlag) {
+ /* make a copy of input */
+ MEMCPY(stencil, source, n * sizeof(GLstencil));
+ if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset) {
+ _mesa_shift_and_offset_stencil( ctx, n, stencil );
+ }
+ if (ctx->Pixel.MapStencilFlag) {
+ _mesa_map_stencil( ctx, n, stencil );
+ }
+ source = stencil;
+ }
+
+ switch (dstType) {
+ case GL_UNSIGNED_BYTE:
+ if (sizeof(GLstencil) == 8) {
+ MEMCPY( dest, source, n );
+ }
+ else {
+ GLubyte *dst = (GLubyte *) dest;
+ GLuint i;
+ for (i=0;i<n;i++) {
+ dst[i] = (GLubyte) source[i];
+ }
+ }
+ break;
+ case GL_BYTE:
+ if (sizeof(GLstencil) == 8) {
+ MEMCPY( dest, source, n );
+ }
+ else {
+ GLbyte *dst = (GLbyte *) dest;
+ GLuint i;
+ for (i=0;i<n;i++) {
+ dst[i] = (GLbyte) source[i];
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT:
+ {
+ GLushort *dst = (GLushort *) dest;
+ GLuint i;
+ for (i=0;i<n;i++) {
+ dst[i] = (GLushort) source[i];
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap2( (GLushort *) dst, n );
+ }
+ }
+ break;
+ case GL_SHORT:
+ {
+ GLshort *dst = (GLshort *) dest;
+ GLuint i;
+ for (i=0;i<n;i++) {
+ dst[i] = (GLshort) source[i];
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap2( (GLushort *) dst, n );
+ }
+ }
+ break;
+ case GL_UNSIGNED_INT:
+ {
+ GLuint *dst = (GLuint *) dest;
+ GLuint i;
+ for (i=0;i<n;i++) {
+ dst[i] = (GLuint) source[i];
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap4( (GLuint *) dst, n );
+ }
+ }
+ break;
+ case GL_INT:
+ {
+ GLint *dst = (GLint *) dest;
+ GLuint i;
+ for (i=0;i<n;i++) {
+ *dst++ = (GLint) source[i];
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap4( (GLuint *) dst, n );
+ }
+ }
+ break;
+ case GL_FLOAT:
+ {
+ GLfloat *dst = (GLfloat *) dest;
+ GLuint i;
+ for (i=0;i<n;i++) {
+ dst[i] = (GLfloat) source[i];
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap4( (GLuint *) dst, n );
+ }
+ }
+ break;
+ case GL_HALF_FLOAT_ARB:
+ {
+ GLhalfARB *dst = (GLhalfARB *) dest;
+ GLuint i;
+ for (i=0;i<n;i++) {
+ dst[i] = _mesa_float_to_half( (float) source[i] );
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap2( (GLushort *) dst, n );
+ }
+ }
+ break;
+ case GL_BITMAP:
+ if (dstPacking->LsbFirst) {
+ GLubyte *dst = (GLubyte *) dest;
+ GLint shift = 0;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ if (shift == 0)
+ *dst = 0;
+ *dst |= ((source[i] != 0) << shift);
+ shift++;
+ if (shift == 8) {
+ shift = 0;
+ dst++;
+ }
+ }
+ }
+ else {
+ GLubyte *dst = (GLubyte *) dest;
+ GLint shift = 7;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ if (shift == 7)
+ *dst = 0;
+ *dst |= ((source[i] != 0) << shift);
+ shift--;
+ if (shift < 0) {
+ shift = 7;
+ dst++;
+ }
+ }
}
+ break;
+ default:
+ _mesa_problem(ctx, "bad type in _mesa_pack_index_span");
}
}
-
void
-_mesa_unpack_depth_span( const GLcontext *ctx, GLuint n, GLdepth *dest,
+_mesa_unpack_depth_span( const GLcontext *ctx, GLuint n, GLfloat *dest,
GLenum srcType, const GLvoid *source,
- const struct gl_pixelstore_attrib *unpacking,
- GLboolean applyTransferOps )
+ const struct gl_pixelstore_attrib *srcPacking )
{
- GLfloat *depth = MALLOC(n * sizeof(GLfloat));
- if (!depth)
- return;
+ (void) srcPacking;
switch (srcType) {
case GL_BYTE:
GLuint i;
const GLubyte *src = (const GLubyte *) source;
for (i = 0; i < n; i++) {
- depth[i] = BYTE_TO_FLOAT(src[i]);
+ dest[i] = BYTE_TO_FLOAT(src[i]);
}
}
break;
GLuint i;
const GLubyte *src = (const GLubyte *) source;
for (i = 0; i < n; i++) {
- depth[i] = UBYTE_TO_FLOAT(src[i]);
+ dest[i] = UBYTE_TO_FLOAT(src[i]);
}
}
break;
GLuint i;
const GLshort *src = (const GLshort *) source;
for (i = 0; i < n; i++) {
- depth[i] = SHORT_TO_FLOAT(src[i]);
+ dest[i] = SHORT_TO_FLOAT(src[i]);
}
}
break;
GLuint i;
const GLushort *src = (const GLushort *) source;
for (i = 0; i < n; i++) {
- depth[i] = USHORT_TO_FLOAT(src[i]);
+ dest[i] = USHORT_TO_FLOAT(src[i]);
}
}
break;
GLuint i;
const GLint *src = (const GLint *) source;
for (i = 0; i < n; i++) {
- depth[i] = INT_TO_FLOAT(src[i]);
+ dest[i] = INT_TO_FLOAT(src[i]);
}
}
break;
GLuint i;
const GLuint *src = (const GLuint *) source;
for (i = 0; i < n; i++) {
- depth[i] = UINT_TO_FLOAT(src[i]);
+ dest[i] = UINT_TO_FLOAT(src[i]);
}
}
break;
case GL_FLOAT:
- MEMCPY(depth, source, n * sizeof(GLfloat));
+ MEMCPY(dest, source, n * sizeof(GLfloat));
+ break;
+ case GL_HALF_FLOAT_ARB:
+ {
+ GLuint i;
+ const GLhalfARB *src = (const GLhalfARB *) source;
+ for (i = 0; i < n; i++) {
+ dest[i] = _mesa_half_to_float(src[i]);
+ }
+ }
break;
default:
- gl_problem(NULL, "bad type in _mesa_unpack_depth_span()");
- FREE(depth);
+ _mesa_problem(NULL, "bad type in _mesa_unpack_depth_span()");
return;
}
- /* apply depth scale and bias */
+ /* apply depth scale and bias and clamp to [0,1] */
if (ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0) {
GLuint i;
for (i = 0; i < n; i++) {
- depth[i] = depth[i] * ctx->Pixel.DepthScale + ctx->Pixel.DepthBias;
+ GLfloat d = dest[i] * ctx->Pixel.DepthScale + ctx->Pixel.DepthBias;
+ dest[i] = CLAMP(d, 0.0F, 1.0F);
}
}
+}
- /* clamp depth values to [0,1] and convert from floats to integers */
- {
- const GLfloat zs = ctx->Visual->DepthMaxF;
+
+/*
+ * Pack an array of depth values. The values are floats in [0,1].
+ */
+void
+_mesa_pack_depth_span( const GLcontext *ctx, GLuint n, GLvoid *dest,
+ GLenum dstType, const GLfloat *depthSpan,
+ const struct gl_pixelstore_attrib *dstPacking )
+{
+ GLfloat depthCopy[MAX_WIDTH];
+ const GLboolean bias_or_scale = ctx->Pixel.DepthBias != 0.0 ||
+ ctx->Pixel.DepthScale != 1.0;
+
+ ASSERT(n <= MAX_WIDTH);
+
+ if (bias_or_scale) {
GLuint i;
for (i = 0; i < n; i++) {
- dest[i] = (GLdepth) (CLAMP(depth[i], 0.0F, 1.0F) * zs);
+ GLfloat d;
+ d = depthSpan[i] * ctx->Pixel.DepthScale + ctx->Pixel.DepthBias;
+ depthCopy[i] = CLAMP(d, 0.0F, 1.0F);
}
+ depthSpan = depthCopy;
}
- FREE(depth);
+ switch (dstType) {
+ case GL_UNSIGNED_BYTE:
+ {
+ GLubyte *dst = (GLubyte *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = FLOAT_TO_UBYTE( depthSpan[i] );
+ }
+ }
+ break;
+ case GL_BYTE:
+ {
+ GLbyte *dst = (GLbyte *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = FLOAT_TO_BYTE( depthSpan[i] );
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT:
+ {
+ GLushort *dst = (GLushort *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = FLOAT_TO_USHORT( depthSpan[i] );
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap2( (GLushort *) dst, n );
+ }
+ }
+ break;
+ case GL_SHORT:
+ {
+ GLshort *dst = (GLshort *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = FLOAT_TO_SHORT( depthSpan[i] );
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap2( (GLushort *) dst, n );
+ }
+ }
+ break;
+ case GL_UNSIGNED_INT:
+ {
+ GLuint *dst = (GLuint *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = FLOAT_TO_UINT( depthSpan[i] );
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap4( (GLuint *) dst, n );
+ }
+ }
+ break;
+ case GL_INT:
+ {
+ GLint *dst = (GLint *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = FLOAT_TO_INT( depthSpan[i] );
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap4( (GLuint *) dst, n );
+ }
+ }
+ break;
+ case GL_FLOAT:
+ {
+ GLfloat *dst = (GLfloat *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = depthSpan[i];
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap4( (GLuint *) dst, n );
+ }
+ }
+ break;
+ case GL_HALF_FLOAT_ARB:
+ {
+ GLhalfARB *dst = (GLhalfARB *) dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[i] = _mesa_float_to_half(depthSpan[i]);
+ }
+ if (dstPacking->SwapBytes) {
+ _mesa_swap2( (GLushort *) dst, n );
+ }
+ }
+ break;
+ default:
+ _mesa_problem(ctx, "bad type in _mesa_pack_depth_span");
+ }
}
-
-/*
- * Unpack image data. Apply byteswapping, byte flipping (bitmap).
- * Return all image data in a contiguous block.
+/**
+ * Unpack image data. Apply byte swapping, byte flipping (bitmap).
+ * Return all image data in a contiguous block. This is used when we
+ * compile glDrawPixels, glTexImage, etc into a display list. We
+ * need a copy of the data in a standard format.
*/
void *
-_mesa_unpack_image( GLsizei width, GLsizei height, GLsizei depth,
+_mesa_unpack_image( GLuint dimensions,
+ GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLenum type, const GLvoid *pixels,
const struct gl_pixelstore_attrib *unpack )
{
}
{
- GLubyte *destBuffer = MALLOC(bytesPerRow * height * depth);
+ GLubyte *destBuffer = (GLubyte *) MALLOC(bytesPerRow * height * depth);
GLubyte *dst;
GLint img, row;
if (!destBuffer)
dst = destBuffer;
for (img = 0; img < depth; img++) {
for (row = 0; row < height; row++) {
- const GLvoid *src = _mesa_image_address(unpack, pixels,
+ const GLvoid *src = _mesa_image_address(dimensions, unpack, pixels,
width, height, format, type, img, row, 0);
MEMCPY(dst, src, bytesPerRow);
/* byte flipping/swapping */
}
}
+#endif
-/*
- * Unpack bitmap data. Resulting data will be in most-significant-bit-first
- * order with row alignment = 1 byte.
+
+/**
+ * Perform clipping for glDrawPixels. The image's window position
+ * and size, and the unpack skipPixels and skipRows are adjusted so
+ * that the image region is entirely within the window and scissor bounds.
+ * NOTE: this will only work when glPixelZoom is (1, 1).
+ *
+ * \return GL_TRUE if image is ready for drawing or
+ * GL_FALSE if image was completely clipped away (draw nothing)
*/
-GLvoid *
-_mesa_unpack_bitmap( GLint width, GLint height, const GLubyte *pixels,
- const struct gl_pixelstore_attrib *packing )
+GLboolean
+_mesa_clip_drawpixels(const GLcontext *ctx,
+ GLint *destX, GLint *destY,
+ GLsizei *width, GLsizei *height,
+ GLint *skipPixels, GLint *skipRows)
{
- GLint bytes, row, width_in_bytes;
- GLubyte *buffer, *dst;
-
- if (!pixels)
- return NULL;
-
- /* Alloc dest storage */
- bytes = ((width + 7) / 8 * height);
- buffer = (GLubyte *) MALLOC( bytes );
- if (!buffer)
- return NULL;
-
+ const GLframebuffer *buffer = ctx->DrawBuffer;
- width_in_bytes = CEILING( width, 8 );
- dst = buffer;
- for (row = 0; row < height; row++) {
- GLubyte *src = _mesa_image_address( packing, pixels, width, height,
- GL_COLOR_INDEX, GL_BITMAP,
- 0, row, 0 );
- if (!src) {
- FREE(buffer);
- return NULL;
- }
+ ASSERT(ctx->Pixel.ZoomX == 1.0F && ctx->Pixel.ZoomY == 1.0F);
- if (packing->SkipPixels == 0) {
- MEMCPY( dst, src, width_in_bytes );
- if (packing->LsbFirst) {
- flip_bytes( dst, width_in_bytes );
- }
- }
- else {
- /* handling SkipPixels is a bit tricky (no pun intended!) */
- GLint i;
- if (packing->LsbFirst) {
- GLubyte srcMask = 1 << (packing->SkipPixels & 0x7);
- GLubyte dstMask = 128;
- GLubyte *s = src;
- GLubyte *d = dst;
- *d = 0;
- for (i = 0; i < width; i++) {
- if (*s & srcMask) {
- *d |= dstMask;
- }
- if (srcMask == 128) {
- srcMask = 1;
- s++;
- }
- else {
- srcMask = srcMask << 1;
- }
- if (dstMask == 1) {
- dstMask = 128;
- d++;
- *d = 0;
- }
- else {
- dstMask = dstMask >> 1;
- }
- }
- }
- else {
- GLubyte srcMask = 128 >> (packing->SkipPixels & 0x7);
- GLubyte dstMask = 128;
- GLubyte *s = src;
- GLubyte *d = dst;
- *d = 0;
- for (i = 0; i < width; i++) {
- if (*s & srcMask) {
- *d |= dstMask;
- }
- if (srcMask == 1) {
- srcMask = 128;
- s++;
- }
- else {
- srcMask = srcMask >> 1;
- }
- if (dstMask == 1) {
- dstMask = 128;
- d++;
- *d = 0;
- }
- else {
- dstMask = dstMask >> 1;
- }
- }
- }
- }
- dst += width_in_bytes;
+ /* left clipping */
+ if (*destX < buffer->_Xmin) {
+ *skipPixels += (buffer->_Xmin - *destX);
+ *width -= (buffer->_Xmin - *destX);
+ *destX = buffer->_Xmin;
}
+ /* right clipping */
+ if (*destX + *width > buffer->_Xmax)
+ *width -= (*destX + *width - buffer->_Xmax);
+
+ if (*width <= 0)
+ return GL_FALSE;
+
+ /* bottom clipping */
+ if (*destY < buffer->_Ymin) {
+ *skipRows += (buffer->_Ymin - *destY);
+ *height -= (buffer->_Ymin - *destY);
+ *destY = buffer->_Ymin;
+ }
+ /* top clipping */
+ if (*destY + *height > buffer->_Ymax)
+ *height -= (*destY + *height - buffer->_Ymax);
- return buffer;
+ if (*height <= 0)
+ return GL_TRUE;
+
+ return GL_TRUE;
}
-/*
- * Pack bitmap data.
+/**
+ * Perform clipping for glReadPixels. The image's window position
+ * and size, and the pack skipPixels and skipRows are adjusted so
+ * that the image region is entirely within the window bounds.
+ * Note: this is different from _mesa_clip_drawpixels() in that the
+ * scissor box is ignored, and we use the bounds of the current "read"
+ * surface;
+ *
+ * \return GL_TRUE if image is ready for drawing or
+ * GL_FALSE if image was completely clipped away (draw nothing)
*/
-void
-_mesa_pack_bitmap( GLint width, GLint height, const GLubyte *source,
- GLubyte *dest, const struct gl_pixelstore_attrib *packing )
+GLboolean
+_mesa_clip_readpixels(const GLcontext *ctx,
+ GLint *srcX, GLint *srcY,
+ GLsizei *width, GLsizei *height,
+ GLint *skipPixels, GLint *skipRows)
{
- GLint row, width_in_bytes;
- const GLubyte *src;
+ const GLframebuffer *buffer = ctx->ReadBuffer;
- if (!source)
- return;
+ /* left clipping */
+ if (*srcX < 0) {
+ *skipPixels += (0 - *srcX);
+ *width -= (0 - *srcX);
+ *srcX = 0;
+ }
+ /* right clipping */
+ if (*srcX + *width > (GLsizei) buffer->Width)
+ *width -= (*srcX + *width - buffer->Width);
+
+ if (*width <= 0)
+ return GL_FALSE;
+
+ /* bottom clipping */
+ if (*srcY < 0) {
+ *skipRows += (0 - *srcY);
+ *height -= (0 - *srcY);
+ *srcY = 0;
+ }
+ /* top clipping */
+ if (*srcY + *height > (GLsizei) buffer->Height)
+ *height -= (*srcY + *height - buffer->Height);
- width_in_bytes = CEILING( width, 8 );
- src = source;
- for (row = 0; row < height; row++) {
- GLubyte *dst = _mesa_image_address( packing, dest, width, height,
- GL_COLOR_INDEX, GL_BITMAP,
- 0, row, 0 );
- if (!dst)
- return;
+ if (*height <= 0)
+ return GL_TRUE;
- if (packing->SkipPixels == 0) {
- MEMCPY( dst, src, width_in_bytes );
- if (packing->LsbFirst) {
- flip_bytes( dst, width_in_bytes );
- }
- }
- else {
- /* handling SkipPixels is a bit tricky (no pun intended!) */
- GLint i;
- if (packing->LsbFirst) {
- GLubyte srcMask = 1 << (packing->SkipPixels & 0x7);
- GLubyte dstMask = 128;
- const GLubyte *s = src;
- GLubyte *d = dst;
- *d = 0;
- for (i = 0; i < width; i++) {
- if (*s & srcMask) {
- *d |= dstMask;
- }
- if (srcMask == 128) {
- srcMask = 1;
- s++;
- }
- else {
- srcMask = srcMask << 1;
- }
- if (dstMask == 1) {
- dstMask = 128;
- d++;
- *d = 0;
- }
- else {
- dstMask = dstMask >> 1;
- }
- }
- }
- else {
- GLubyte srcMask = 128 >> (packing->SkipPixels & 0x7);
- GLubyte dstMask = 128;
- const GLubyte *s = src;
- GLubyte *d = dst;
- *d = 0;
- for (i = 0; i < width; i++) {
- if (*s & srcMask) {
- *d |= dstMask;
- }
- if (srcMask == 1) {
- srcMask = 128;
- s++;
- }
- else {
- srcMask = srcMask >> 1;
- }
- if (dstMask == 1) {
- dstMask = 128;
- d++;
- *d = 0;
- }
- else {
- dstMask = dstMask >> 1;
- }
- }
- }
- }
- src += width_in_bytes;
- }
+ return GL_TRUE;
}
+
projects / mesa.git / blobdiff