pixel.c revision 60c5ad80416e2e87984ea003fac07c55effa5939
/* Copyright (c) 2001, Stanford University
* All rights reserved
*
* See the file LICENSE.txt for information on redistributing this software.
*/
#include "cr_pixeldata.h"
#include "cr_error.h"
#include "cr_mem.h"
#include "cr_version.h"
/**
* Maybe export this someday.
*/
static int crSizeOfType( GLenum type )
{
switch (type) {
#ifdef CR_OPENGL_VERSION_1_2
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
#endif
case GL_UNSIGNED_BYTE:
case GL_BYTE:
return 1;
case GL_BITMAP:
return 0; /* special case */
#ifdef CR_OPENGL_VERSION_1_2
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
#endif
case GL_UNSIGNED_SHORT:
case GL_SHORT:
return 2;
#ifdef CR_OPENGL_VERSION_1_2
case GL_UNSIGNED_INT_8_8_8_8:
case GL_UNSIGNED_INT_8_8_8_8_REV:
case GL_UNSIGNED_INT_10_10_10_2:
case GL_UNSIGNED_INT_2_10_10_10_REV:
#endif
case GL_UNSIGNED_INT:
case GL_INT:
case GL_FLOAT:
return 4;
case GL_DOUBLE:
return 8;
default:
crError( "Unknown pixel type in crSizeOfType: 0x%x", (unsigned int) type );
return 0;
}
}
/**
* Compute bytes per pixel for the given format/type combination.
* \return bytes per pixel or -1 for invalid format or type, 0 for bitmap data.
*/
int crPixelSize( GLenum format, GLenum type )
{
int bytes = 1; /* picky Windows compiler, we override later */
switch (type) {
#ifdef CR_OPENGL_VERSION_1_2
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
return 1;
#endif
case GL_UNSIGNED_BYTE:
case GL_BYTE:
bytes = 1;
break;
case GL_BITMAP:
return 0; /* special case */
#ifdef CR_OPENGL_VERSION_1_2
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
return 2;
#endif
case GL_UNSIGNED_SHORT:
case GL_SHORT:
bytes = 2;
break;
#ifdef CR_OPENGL_VERSION_1_2
case GL_UNSIGNED_INT_8_8_8_8:
case GL_UNSIGNED_INT_8_8_8_8_REV:
case GL_UNSIGNED_INT_10_10_10_2:
case GL_UNSIGNED_INT_2_10_10_10_REV:
return 4;
#endif
case GL_UNSIGNED_INT:
case GL_INT:
case GL_FLOAT:
bytes = 4;
break;
default:
crWarning( "Unknown pixel type in crPixelSize: type:0x%x(fmt:0x%x)", (unsigned int) type, (unsigned int) format);
return 0;
}
switch (format) {
case GL_COLOR_INDEX:
case GL_STENCIL_INDEX:
case GL_DEPTH_COMPONENT:
case GL_RED:
case GL_GREEN:
case GL_BLUE:
case GL_ALPHA:
case GL_LUMINANCE:
case GL_INTENSITY:
break;
case GL_LUMINANCE_ALPHA:
bytes *= 2;
break;
case GL_RGB:
#ifdef CR_OPENGL_VERSION_1_2
case GL_BGR:
#endif
bytes *= 3;
break;
case GL_RGBA:
#ifdef GL_ABGR_EXT
case GL_ABGR_EXT:
#endif
#ifdef CR_OPENGL_VERSION_1_2
case GL_BGRA:
#endif
bytes *= 4;
break;
default:
crWarning( "Unknown pixel format in crPixelSize: type:0x%x(fmt:0x%x)", (unsigned int) type, (unsigned int) format);
return 0;
}
return bytes;
}
#define BYTE_TO_FLOAT(b) ((b) * (1.0/127.0))
#define FLOAT_TO_BYTE(f) ((GLbyte) ((f) * 127.0))
#define UBYTE_TO_FLOAT(b) ((b) * (1.0/255.0))
#define FLOAT_TO_UBYTE(f) ((GLbyte) ((f) * 255.0))
#define SHORT_TO_FLOAT(s) ((s) * (1.0/32768.0))
#define FLOAT_TO_SHORT(f) ((GLshort) ((f) * 32768.0))
#define USHORT_TO_FLOAT(s) ((s) * (1.0/65535.0))
#define FLOAT_TO_USHORT(f) ((GLushort) ((f) * 65535.0))
#define INT_TO_FLOAT(i) ((i) * (1.0F/2147483647.0))
#define FLOAT_TO_INT(f) ((GLint) ((f) * 2147483647.0))
#define UINT_TO_FLOAT(i) ((i) * (1.0F / 4294967295.0F))
#define FLOAT_TO_UINT(f) ((GLuint) ((f) * 4294967295.0))
#ifdef _MSC_VER
/** @todo bird: MSC takes 5..20 mins to compile get_row and/or put_row with global
* optimizations enabled. It varies a bit between 8.0/64 and 7.1/32 - the latter seems
* to be fine with just disabling opts for get_row, while the former needs both to be
* disabled to compile it a decent time. It seems this isn't important code after all,
* so we're not overly worried about the performance degration. Even so, we might want
* to look into it before long, perhaps checking with Visual C++ 9.0 (aka 2008). */
# pragma optimize("g", off)
#endif
/*
* Pack src pixel data into tmpRow array as either GLfloat[][1] or
* GLfloat[][4] depending on whether the format is for colors.
*/
static void
get_row(const char *src, GLenum srcFormat, GLenum srcType,
GLsizei width, GLfloat *tmpRow)
{
const GLbyte *bSrc = (GLbyte *) src;
const GLubyte *ubSrc = (GLubyte *) src;
const GLshort *sSrc = (GLshort *) src;
const GLushort *usSrc = (GLushort *) src;
const GLint *iSrc = (GLint *) src;
const GLuint *uiSrc = (GLuint *) src;
const GLfloat *fSrc = (GLfloat *) src;
const GLdouble *dSrc = (GLdouble *) src;
int i;
if (srcFormat == GL_COLOR_INDEX || srcFormat == GL_STENCIL_INDEX) {
switch (srcType) {
case GL_BYTE:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) bSrc[i];
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) ubSrc[i];
break;
case GL_SHORT:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) sSrc[i];
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) usSrc[i];
break;
case GL_INT:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) iSrc[i];
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) uiSrc[i];
break;
case GL_FLOAT:
for (i = 0; i < width; i++)
tmpRow[i] = fSrc[i];
break;
case GL_DOUBLE:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) dSrc[i];
break;
default:
crError("unexpected type in get_row in pixel.c");
}
}
else if (srcFormat == GL_DEPTH_COMPONENT) {
switch (srcType) {
case GL_BYTE:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) BYTE_TO_FLOAT(bSrc[i]);
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) UBYTE_TO_FLOAT(ubSrc[i]);
break;
case GL_SHORT:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) SHORT_TO_FLOAT(sSrc[i]);
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) USHORT_TO_FLOAT(usSrc[i]);
break;
case GL_INT:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) INT_TO_FLOAT(bSrc[i]);
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) UINT_TO_FLOAT(bSrc[i]);
break;
case GL_FLOAT:
for (i = 0; i < width; i++)
tmpRow[i] = fSrc[i];
break;
case GL_DOUBLE:
for (i = 0; i < width; i++)
tmpRow[i] = (GLfloat) dSrc[i];
break;
default:
crError("unexpected type in get_row in pixel.c");
}
}
else if (srcFormat == GL_RED || srcFormat == GL_GREEN ||
srcFormat == GL_BLUE || srcFormat == GL_ALPHA) {
int dst;
if (srcFormat == GL_RED)
dst = 0;
else if (srcFormat == GL_GREEN)
dst = 1;
else if (srcFormat == GL_BLUE)
dst = 2;
else
dst = 3;
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = 0.0;
tmpRow[i*4+1] = 0.0;
tmpRow[i*4+2] = 0.0;
tmpRow[i*4+3] = 1.0;
}
switch (srcType) {
case GL_BYTE:
for (i = 0; i < width; i++, dst += 4)
tmpRow[dst] = (GLfloat) BYTE_TO_FLOAT(bSrc[i]);
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++, dst += 4)
tmpRow[dst] = (GLfloat) UBYTE_TO_FLOAT(ubSrc[i]);
break;
case GL_SHORT:
for (i = 0; i < width; i++, dst += 4)
tmpRow[dst] = (GLfloat) SHORT_TO_FLOAT(sSrc[i]);
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++, dst += 4)
tmpRow[dst] = (GLfloat) USHORT_TO_FLOAT(usSrc[i]);
break;
case GL_INT:
for (i = 0; i < width; i++, dst += 4)
tmpRow[dst] = (GLfloat) INT_TO_FLOAT(iSrc[i]);
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++, dst += 4)
tmpRow[dst] = (GLfloat) UINT_TO_FLOAT(uiSrc[i]);
break;
case GL_FLOAT:
for (i = 0; i < width; i++, dst += 4)
tmpRow[dst] = fSrc[i];
break;
case GL_DOUBLE:
for (i = 0; i < width; i++, dst += 4)
tmpRow[dst] = (GLfloat) fSrc[i];
break;
default:
crError("unexpected type in get_row in pixel.c");
}
}
else if (srcFormat == GL_LUMINANCE) {
switch (srcType) {
case GL_BYTE:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) BYTE_TO_FLOAT(bSrc[i]);
tmpRow[i*4+3] = 1.0;
}
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) UBYTE_TO_FLOAT(ubSrc[i]);
tmpRow[i*4+3] = 1.0;
}
break;
case GL_SHORT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) SHORT_TO_FLOAT(sSrc[i]);
tmpRow[i*4+3] = 1.0;
}
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) USHORT_TO_FLOAT(usSrc[i]);
tmpRow[i*4+3] = 1.0;
}
break;
case GL_INT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) INT_TO_FLOAT(iSrc[i]);
tmpRow[i*4+3] = 1.0;
}
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) UINT_TO_FLOAT(uiSrc[i]);
tmpRow[i*4+3] = 1.0;
}
break;
case GL_FLOAT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2] = fSrc[i];
tmpRow[i*4+3] = 1.0;
}
break;
case GL_DOUBLE:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2] = (GLfloat) dSrc[i];
tmpRow[i*4+3] = 1.0;
}
break;
default:
crError("unexpected type in get_row in pixel.c");
}
}
else if (srcFormat == GL_INTENSITY) {
switch (srcType) {
case GL_BYTE:
for (i = 0; i < width; i++)
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2] = tmpRow[i*4+3]
= (GLfloat) BYTE_TO_FLOAT(bSrc[i]);
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++)
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2] = tmpRow[i*4+3]
= (GLfloat) UBYTE_TO_FLOAT(ubSrc[i]);
break;
case GL_SHORT:
for (i = 0; i < width; i++)
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2] = tmpRow[i*4+3]
= (GLfloat) SHORT_TO_FLOAT(sSrc[i]);
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++)
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2] = tmpRow[i*4+3]
= (GLfloat) USHORT_TO_FLOAT(usSrc[i]);
break;
case GL_INT:
for (i = 0; i < width; i++)
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2] = tmpRow[i*4+3]
= (GLfloat) INT_TO_FLOAT(iSrc[i]);
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++)
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2] = tmpRow[i*4+3]
= UINT_TO_FLOAT(uiSrc[i]);
break;
case GL_FLOAT:
for (i = 0; i < width; i++)
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2] = tmpRow[i*4+3]
= fSrc[i];
break;
case GL_DOUBLE:
for (i = 0; i < width; i++)
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2] = tmpRow[i*4+3]
= (GLfloat) dSrc[i];
break;
default:
crError("unexpected type in get_row in pixel.c");
}
}
else if (srcFormat == GL_LUMINANCE_ALPHA) {
switch (srcType) {
case GL_BYTE:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) BYTE_TO_FLOAT(bSrc[i*2+0]);
tmpRow[i*4+3] = (GLfloat) BYTE_TO_FLOAT(bSrc[i*2+1]);
}
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) UBYTE_TO_FLOAT(ubSrc[i*2+0]);
tmpRow[i*4+3] = (GLfloat) UBYTE_TO_FLOAT(ubSrc[i*2+1]);
}
break;
case GL_SHORT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) SHORT_TO_FLOAT(sSrc[i*2+0]);
tmpRow[i*4+3] = (GLfloat) SHORT_TO_FLOAT(sSrc[i*2+1]);
}
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) USHORT_TO_FLOAT(usSrc[i*2+0]);
tmpRow[i*4+3] = (GLfloat) USHORT_TO_FLOAT(usSrc[i*2+1]);
}
break;
case GL_INT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) INT_TO_FLOAT(iSrc[i*2+0]);
tmpRow[i*4+3] = (GLfloat) INT_TO_FLOAT(iSrc[i*2+1]);
}
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) UINT_TO_FLOAT(uiSrc[i*2+0]);
tmpRow[i*4+3] = (GLfloat) UINT_TO_FLOAT(uiSrc[i*2+1]);
}
break;
case GL_FLOAT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2] = fSrc[i*2+0];
tmpRow[i*4+3] = fSrc[i*2+1];
}
break;
case GL_DOUBLE:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = tmpRow[i*4+1] = tmpRow[i*4+2]
= (GLfloat) dSrc[i*2+0];
tmpRow[i*4+3] = (GLfloat) dSrc[i*2+1];
}
break;
default:
crError("unexpected type in get_row in pixel.c");
}
}
else if (srcFormat == GL_RGB
#ifdef CR_OPENGL_VERSION_1_2
|| srcFormat == GL_BGR
#endif
) {
int r, b;
if (srcFormat == GL_RGB) {
r = 0; b = 2;
}
else {
r = 2; b = 0;
}
switch (srcType) {
case GL_BYTE:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) BYTE_TO_FLOAT(bSrc[i*3+r]);
tmpRow[i*4+1] = (GLfloat) BYTE_TO_FLOAT(bSrc[i*3+1]);
tmpRow[i*4+2] = (GLfloat) BYTE_TO_FLOAT(bSrc[i*3+b]);
tmpRow[i*4+3] = 1.0;
}
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) UBYTE_TO_FLOAT(ubSrc[i*3+r]);
tmpRow[i*4+1] = (GLfloat) UBYTE_TO_FLOAT(ubSrc[i*3+1]);
tmpRow[i*4+2] = (GLfloat) UBYTE_TO_FLOAT(ubSrc[i*3+b]);
tmpRow[i*4+3] = 1.0;
}
break;
case GL_SHORT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) SHORT_TO_FLOAT(sSrc[i*3+r]);
tmpRow[i*4+1] = (GLfloat) SHORT_TO_FLOAT(sSrc[i*3+1]);
tmpRow[i*4+2] = (GLfloat) SHORT_TO_FLOAT(sSrc[i*3+b]);
tmpRow[i*4+3] = 1.0;
}
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) USHORT_TO_FLOAT(usSrc[i*3+r]);
tmpRow[i*4+1] = (GLfloat) USHORT_TO_FLOAT(usSrc[i*3+1]);
tmpRow[i*4+2] = (GLfloat) USHORT_TO_FLOAT(usSrc[i*3+b]);
tmpRow[i*4+3] = 1.0;
}
break;
case GL_INT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) INT_TO_FLOAT(iSrc[i*3+r]);
tmpRow[i*4+1] = (GLfloat) INT_TO_FLOAT(iSrc[i*3+1]);
tmpRow[i*4+2] = (GLfloat) INT_TO_FLOAT(iSrc[i*3+b]);
tmpRow[i*4+3] = 1.0;
}
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) UINT_TO_FLOAT(uiSrc[i*3+r]);
tmpRow[i*4+1] = (GLfloat) UINT_TO_FLOAT(uiSrc[i*3+1]);
tmpRow[i*4+2] = (GLfloat) UINT_TO_FLOAT(uiSrc[i*3+b]);
tmpRow[i*4+3] = 1.0;
}
break;
case GL_FLOAT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = fSrc[i*3+r];
tmpRow[i*4+1] = fSrc[i*3+1];
tmpRow[i*4+2] = fSrc[i*3+b];
tmpRow[i*4+3] = 1.0;
}
break;
case GL_DOUBLE:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) dSrc[i*3+r];
tmpRow[i*4+1] = (GLfloat) dSrc[i*3+1];
tmpRow[i*4+2] = (GLfloat) dSrc[i*3+b];
tmpRow[i*4+3] = 1.0;
}
break;
#ifdef CR_OPENGL_VERSION_1_2
case GL_UNSIGNED_BYTE_3_3_2:
for (i = 0; i < width; i++) {
tmpRow[i*4+r] = (GLfloat) ((ubSrc[i] >> 5) ) / 7.0f;
tmpRow[i*4+1] = (GLfloat) ((ubSrc[i] >> 2) & 0x7) / 7.0f;
tmpRow[i*4+b] = (GLfloat) ((ubSrc[i] ) & 0x3) / 3.0f;
tmpRow[i*4+3] = 1.0;
}
break;
case GL_UNSIGNED_BYTE_2_3_3_REV:
for (i = 0; i < width; i++) {
tmpRow[i*4+r] = (GLfloat) ((ubSrc[i] ) & 0x7) / 7.0f;
tmpRow[i*4+1] = (GLfloat) ((ubSrc[i] >> 3) & 0x7) / 7.0f;
tmpRow[i*4+b] = (GLfloat) ((ubSrc[i] >> 6) ) / 3.0f;
tmpRow[i*4+3] = 1.0;
}
break;
case GL_UNSIGNED_SHORT_5_6_5:
for (i = 0; i < width; i++) {
tmpRow[i*4+r] = (GLfloat) ((usSrc[i] >> 11) & 0x1f) / 31.0f;
tmpRow[i*4+1] = (GLfloat) ((usSrc[i] >> 5) & 0x3f) / 63.0f;
tmpRow[i*4+b] = (GLfloat) ((usSrc[i] ) & 0x1f) / 31.0f;
tmpRow[i*4+3] = 1.0;
}
break;
case GL_UNSIGNED_SHORT_5_6_5_REV:
for (i = 0; i < width; i++) {
tmpRow[i*4+r] = (GLfloat) ((usSrc[i] ) & 0x1f) / 31.0f;
tmpRow[i*4+1] = (GLfloat) ((usSrc[i] >> 5) & 0x3f) / 63.0f;
tmpRow[i*4+b] = (GLfloat) ((usSrc[i] >> 11) & 0x1f) / 31.0f;
tmpRow[i*4+3] = 1.0;
}
break;
#endif
default:
crError("unexpected type in get_row in pixel.c");
}
}
else if (srcFormat == GL_RGBA
#ifdef CR_OPENGL_VERSION_1_2
|| srcFormat == GL_BGRA
#endif
) {
int r, b;
if (srcFormat == GL_RGB) {
r = 0; b = 2;
}
else {
r = 2; b = 0;
}
switch (srcType) {
case GL_BYTE:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) BYTE_TO_FLOAT(bSrc[i*4+r]);
tmpRow[i*4+1] = (GLfloat) BYTE_TO_FLOAT(bSrc[i*4+1]);
tmpRow[i*4+2] = (GLfloat) BYTE_TO_FLOAT(bSrc[i*4+b]);
tmpRow[i*4+3] = (GLfloat) BYTE_TO_FLOAT(bSrc[i*4+3]);
}
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) UBYTE_TO_FLOAT(ubSrc[i*4+r]);
tmpRow[i*4+1] = (GLfloat) UBYTE_TO_FLOAT(ubSrc[i*4+1]);
tmpRow[i*4+2] = (GLfloat) UBYTE_TO_FLOAT(ubSrc[i*4+b]);
tmpRow[i*4+3] = (GLfloat) UBYTE_TO_FLOAT(ubSrc[i*4+3]);
}
break;
case GL_SHORT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) SHORT_TO_FLOAT(sSrc[i*4+r]);
tmpRow[i*4+1] = (GLfloat) SHORT_TO_FLOAT(sSrc[i*4+1]);
tmpRow[i*4+2] = (GLfloat) SHORT_TO_FLOAT(sSrc[i*4+b]);
tmpRow[i*4+3] = (GLfloat) SHORT_TO_FLOAT(sSrc[i*4+3]);
}
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) USHORT_TO_FLOAT(usSrc[i*4+r]);
tmpRow[i*4+1] = (GLfloat) USHORT_TO_FLOAT(usSrc[i*4+1]);
tmpRow[i*4+2] = (GLfloat) USHORT_TO_FLOAT(usSrc[i*4+b]);
tmpRow[i*4+3] = (GLfloat) USHORT_TO_FLOAT(usSrc[i*4+3]);
}
break;
case GL_INT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) INT_TO_FLOAT(iSrc[i*4+r]);
tmpRow[i*4+1] = (GLfloat) INT_TO_FLOAT(iSrc[i*4+1]);
tmpRow[i*4+2] = (GLfloat) INT_TO_FLOAT(iSrc[i*4+b]);
tmpRow[i*4+3] = (GLfloat) INT_TO_FLOAT(iSrc[i*4+3]);
}
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) UINT_TO_FLOAT(uiSrc[i*4+r]);
tmpRow[i*4+1] = (GLfloat) UINT_TO_FLOAT(uiSrc[i*4+1]);
tmpRow[i*4+2] = (GLfloat) UINT_TO_FLOAT(uiSrc[i*4+b]);
tmpRow[i*4+3] = (GLfloat) UINT_TO_FLOAT(uiSrc[i*4+3]);
}
break;
case GL_FLOAT:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = fSrc[i*4+r];
tmpRow[i*4+1] = fSrc[i*4+1];
tmpRow[i*4+2] = fSrc[i*4+b];
tmpRow[i*4+3] = fSrc[i*4+3];
}
break;
case GL_DOUBLE:
for (i = 0; i < width; i++) {
tmpRow[i*4+0] = (GLfloat) dSrc[i*4+r];
tmpRow[i*4+1] = (GLfloat) dSrc[i*4+1];
tmpRow[i*4+2] = (GLfloat) dSrc[i*4+b];
tmpRow[i*4+3] = (GLfloat) dSrc[i*4+3];
}
break;
#ifdef CR_OPENGL_VERSION_1_2
case GL_UNSIGNED_SHORT_5_5_5_1:
for (i = 0; i < width; i++) {
tmpRow[i*4+r] = (GLfloat) ((usSrc[i] >> 11) ) / 31.0f;
tmpRow[i*4+1] = (GLfloat) ((usSrc[i] >> 6) & 0x1f) / 31.0f;
tmpRow[i*4+b] = (GLfloat) ((usSrc[i] >> 1) & 0x1f) / 31.0f;
tmpRow[i*4+3] = (GLfloat) ((usSrc[i] ) & 0x01);
}
break;
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
for (i = 0; i < width; i++) {
tmpRow[i*4+r] = (GLfloat) ((usSrc[i] ) & 0x1f) / 31.0f;
tmpRow[i*4+1] = (GLfloat) ((usSrc[i] >> 5) & 0x1f) / 31.0f;
tmpRow[i*4+b] = (GLfloat) ((usSrc[i] >> 10) & 0x1f) / 31.0f;
tmpRow[i*4+3] = (GLfloat) ((usSrc[i] >> 15) );
}
break;
case GL_UNSIGNED_SHORT_4_4_4_4:
for (i = 0; i < width; i++) {
tmpRow[i*4+r] = (GLfloat) ((usSrc[i] >> 12) & 0xf) / 15.0f;
tmpRow[i*4+1] = (GLfloat) ((usSrc[i] >> 8) & 0xf) / 15.0f;
tmpRow[i*4+b] = (GLfloat) ((usSrc[i] >> 4) & 0xf) / 15.0f;
tmpRow[i*4+3] = (GLfloat) ((usSrc[i] ) & 0xf) / 15.0f;
}
break;
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
for (i = 0; i < width; i++) {
tmpRow[i*4+r] = (GLfloat) ((usSrc[i] ) & 0xf) / 15.0f;
tmpRow[i*4+1] = (GLfloat) ((usSrc[i] >> 4) & 0xf) / 15.0f;
tmpRow[i*4+b] = (GLfloat) ((usSrc[i] >> 8) & 0xf) / 15.0f;
tmpRow[i*4+3] = (GLfloat) ((usSrc[i] >> 12) & 0xf) / 15.0f;
}
break;
case GL_UNSIGNED_INT_8_8_8_8:
for (i = 0; i < width; i++) {
tmpRow[i*4+r] = (GLfloat) ((uiSrc[i] >> 24) & 0xff) / 255.0f;
tmpRow[i*4+1] = (GLfloat) ((uiSrc[i] >> 16) & 0xff) / 255.0f;
tmpRow[i*4+b] = (GLfloat) ((uiSrc[i] >> 8) & 0xff) / 255.0f;
tmpRow[i*4+3] = (GLfloat) ((uiSrc[i] ) & 0xff) / 255.0f;
}
break;
case GL_UNSIGNED_INT_8_8_8_8_REV:
for (i = 0; i < width; i++) {
tmpRow[i*4+r] = (GLfloat) ((uiSrc[i] ) & 0xff) / 255.0f;
tmpRow[i*4+1] = (GLfloat) ((uiSrc[i] >> 8) & 0xff) / 255.0f;
tmpRow[i*4+b] = (GLfloat) ((uiSrc[i] >> 16) & 0xff) / 255.0f;
tmpRow[i*4+3] = (GLfloat) ((uiSrc[i] >> 24) & 0xff) / 255.0f;
}
break;
case GL_UNSIGNED_INT_10_10_10_2:
for (i = 0; i < width; i++) {
tmpRow[i*4+r] = (GLfloat) ((uiSrc[i] >> 22) & 0x3ff) / 1023.0f;
tmpRow[i*4+1] = (GLfloat) ((uiSrc[i] >> 12) & 0x3ff) / 1023.0f;
tmpRow[i*4+b] = (GLfloat) ((uiSrc[i] >> 2) & 0x3ff) / 1023.0f;
tmpRow[i*4+3] = (GLfloat) ((uiSrc[i] ) & 0x003) / 3.0f;
}
break;
case GL_UNSIGNED_INT_2_10_10_10_REV:
for (i = 0; i < width; i++) {
tmpRow[i*4+r] = (GLfloat) ((uiSrc[i] ) & 0x3ff) / 1023.0f;
tmpRow[i*4+1] = (GLfloat) ((uiSrc[i] >> 10) & 0x3ff) / 1023.0f;
tmpRow[i*4+b] = (GLfloat) ((uiSrc[i] >> 20) & 0x3ff) / 1023.0f;
tmpRow[i*4+3] = (GLfloat) ((uiSrc[i] >> 30) & 0x003) / 3.0f;
}
break;
#endif
default:
crError("unexpected type in get_row in pixel.c");
}
}
else{
crError("unexpected source format in get_row in pixel.c");
}
}
static void put_row(char *dst, GLenum dstFormat, GLenum dstType,
GLsizei width, const GLfloat *tmpRow)
{
GLbyte *bDst = (GLbyte *) dst;
GLubyte *ubDst = (GLubyte *) dst;
GLshort *sDst = (GLshort *) dst;
GLushort *usDst = (GLushort *) dst;
GLint *iDst = (GLint *) dst;
GLuint *uiDst = (GLuint *) dst;
GLfloat *fDst = (GLfloat *) dst;
GLdouble *dDst = (GLdouble *) dst;
int i;
if (dstFormat == GL_COLOR_INDEX || dstFormat == GL_STENCIL_INDEX) {
switch (dstType) {
case GL_BYTE:
for (i = 0; i < width; i++)
bDst[i] = (GLbyte) tmpRow[i];
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++)
ubDst[i] = (GLubyte) tmpRow[i];
break;
case GL_SHORT:
for (i = 0; i < width; i++)
sDst[i] = (GLshort) tmpRow[i];
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++)
usDst[i] = (GLushort) tmpRow[i];
break;
case GL_INT:
for (i = 0; i < width; i++)
iDst[i] = (GLint) tmpRow[i];
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++)
uiDst[i] = (GLuint) tmpRow[i];
break;
case GL_FLOAT:
for (i = 0; i < width; i++)
fDst[i] = tmpRow[i];
break;
case GL_DOUBLE:
for (i = 0; i < width; i++)
dDst[i] = tmpRow[i];
break;
default:
crError("unexpected type in put_row in pixel.c");
}
}
else if (dstFormat == GL_DEPTH_COMPONENT) {
switch (dstType) {
case GL_BYTE:
for (i = 0; i < width; i++)
bDst[i] = FLOAT_TO_BYTE(tmpRow[i]);
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++)
ubDst[i] = FLOAT_TO_UBYTE(tmpRow[i]);
break;
case GL_SHORT:
for (i = 0; i < width; i++)
sDst[i] = FLOAT_TO_SHORT(tmpRow[i]);
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++)
sDst[i] = FLOAT_TO_SHORT(tmpRow[i]);
break;
case GL_INT:
for (i = 0; i < width; i++)
bDst[i] = (GLbyte) FLOAT_TO_INT(tmpRow[i]);
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++)
bDst[i] = (GLbyte) FLOAT_TO_UINT(tmpRow[i]);
break;
case GL_FLOAT:
for (i = 0; i < width; i++)
fDst[i] = tmpRow[i];
break;
case GL_DOUBLE:
for (i = 0; i < width; i++)
dDst[i] = tmpRow[i];
break;
default:
crError("unexpected type in put_row in pixel.c");
}
}
else if (dstFormat == GL_RED || dstFormat == GL_GREEN ||
dstFormat == GL_BLUE || dstFormat == GL_ALPHA ||
dstFormat == GL_LUMINANCE || dstFormat == GL_INTENSITY) {
int index;
if (dstFormat == GL_RED)
index = 0;
else if (dstFormat == GL_LUMINANCE)
index = 0;
else if (dstFormat == GL_INTENSITY)
index = 0;
else if (dstFormat == GL_GREEN)
index = 1;
else if (dstFormat == GL_BLUE)
index = 2;
else
index = 3;
switch (dstType) {
case GL_BYTE:
for (i = 0; i < width; i++)
bDst[i] = FLOAT_TO_BYTE(tmpRow[i*4+index]);
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++)
ubDst[i] = FLOAT_TO_UBYTE(tmpRow[i*4+index]);
break;
case GL_SHORT:
for (i = 0; i < width; i++)
sDst[i] = FLOAT_TO_SHORT(tmpRow[i*4+index]);
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++)
usDst[i] = FLOAT_TO_USHORT(tmpRow[i*4+index]);
break;
case GL_INT:
for (i = 0; i < width; i++)
iDst[i] = FLOAT_TO_INT(tmpRow[i*4+index]);
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++)
uiDst[i] = FLOAT_TO_UINT(tmpRow[i*4+index]);
break;
case GL_FLOAT:
for (i = 0; i < width; i++)
fDst[i] = tmpRow[i*4+index];
break;
case GL_DOUBLE:
for (i = 0; i < width; i++)
dDst[i] = tmpRow[i*4+index];
break;
default:
crError("unexpected type in put_row in pixel.c");
}
}
else if (dstFormat == GL_LUMINANCE_ALPHA) {
switch (dstType) {
case GL_BYTE:
for (i = 0; i < width; i++) {
bDst[i*2+0] = FLOAT_TO_BYTE(tmpRow[i*4+0]);
bDst[i*2+1] = FLOAT_TO_BYTE(tmpRow[i*4+3]);
}
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++) {
ubDst[i*2+0] = FLOAT_TO_UBYTE(tmpRow[i*4+0]);
ubDst[i*2+1] = FLOAT_TO_UBYTE(tmpRow[i*4+3]);
}
break;
case GL_SHORT:
for (i = 0; i < width; i++) {
sDst[i*2+0] = FLOAT_TO_SHORT(tmpRow[i*4+0]);
sDst[i*2+1] = FLOAT_TO_SHORT(tmpRow[i*4+3]);
}
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++) {
usDst[i*2+0] = FLOAT_TO_USHORT(tmpRow[i*4+0]);
usDst[i*2+1] = FLOAT_TO_USHORT(tmpRow[i*4+3]);
}
break;
case GL_INT:
for (i = 0; i < width; i++) {
iDst[i*2+0] = FLOAT_TO_INT(tmpRow[i*4+0]);
iDst[i*2+1] = FLOAT_TO_INT(tmpRow[i*4+3]);
}
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++) {
uiDst[i*2+0] = FLOAT_TO_UINT(tmpRow[i*4+0]);
uiDst[i*2+1] = FLOAT_TO_UINT(tmpRow[i*4+3]);
}
break;
case GL_FLOAT:
for (i = 0; i < width; i++) {
fDst[i*2+0] = tmpRow[i*4+0];
fDst[i*2+1] = tmpRow[i*4+3];
}
break;
case GL_DOUBLE:
for (i = 0; i < width; i++) {
dDst[i*2+0] = tmpRow[i*4+0];
dDst[i*2+1] = tmpRow[i*4+3];
}
break;
default:
crError("unexpected type in put_row in pixel.c");
}
}
else if (dstFormat == GL_RGB
#ifdef CR_OPENGL_VERSION_1_2
|| dstFormat == GL_BGR
#endif
) {
int r, b;
if (dstFormat == GL_RGB) {
r = 0; b = 2;
}
else {
r = 2; b = 0;
}
switch (dstType) {
case GL_BYTE:
for (i = 0; i < width; i++) {
bDst[i*3+r] = FLOAT_TO_BYTE(tmpRow[i*4+0]);
bDst[i*3+1] = FLOAT_TO_BYTE(tmpRow[i*4+1]);
bDst[i*3+b] = FLOAT_TO_BYTE(tmpRow[i*4+2]);
}
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++) {
ubDst[i*3+r] = FLOAT_TO_UBYTE(tmpRow[i*4+0]);
ubDst[i*3+1] = FLOAT_TO_UBYTE(tmpRow[i*4+1]);
ubDst[i*3+b] = FLOAT_TO_UBYTE(tmpRow[i*4+2]);
}
break;
case GL_SHORT:
for (i = 0; i < width; i++) {
sDst[i*3+r] = FLOAT_TO_SHORT(tmpRow[i*4+0]);
sDst[i*3+1] = FLOAT_TO_SHORT(tmpRow[i*4+1]);
sDst[i*3+b] = FLOAT_TO_SHORT(tmpRow[i*4+2]);
}
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++) {
usDst[i*3+r] = FLOAT_TO_USHORT(tmpRow[i*4+0]);
usDst[i*3+1] = FLOAT_TO_USHORT(tmpRow[i*4+1]);
usDst[i*3+b] = FLOAT_TO_USHORT(tmpRow[i*4+2]);
}
break;
case GL_INT:
for (i = 0; i < width; i++) {
iDst[i*3+r] = FLOAT_TO_INT(tmpRow[i*4+0]);
iDst[i*3+1] = FLOAT_TO_INT(tmpRow[i*4+1]);
iDst[i*3+b] = FLOAT_TO_INT(tmpRow[i*4+2]);
}
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++) {
uiDst[i*3+r] = FLOAT_TO_UINT(tmpRow[i*4+0]);
uiDst[i*3+1] = FLOAT_TO_UINT(tmpRow[i*4+1]);
uiDst[i*3+b] = FLOAT_TO_UINT(tmpRow[i*4+2]);
}
break;
case GL_FLOAT:
for (i = 0; i < width; i++) {
fDst[i*3+r] = tmpRow[i*4+0];
fDst[i*3+1] = tmpRow[i*4+1];
fDst[i*3+b] = tmpRow[i*4+2];
}
break;
case GL_DOUBLE:
for (i = 0; i < width; i++) {
dDst[i*3+r] = tmpRow[i*4+0];
dDst[i*3+1] = tmpRow[i*4+1];
dDst[i*3+b] = tmpRow[i*4+2];
}
break;
#ifdef CR_OPENGL_VERSION_1_2
case GL_UNSIGNED_BYTE_3_3_2:
for (i = 0; i < width; i++) {
int red = (int) (tmpRow[i*4+r] * 7.0);
int green = (int) (tmpRow[i*4+1] * 7.0);
int blue = (int) (tmpRow[i*4+b] * 3.0);
ubDst[i] = (red << 5) | (green << 2) | blue;
}
break;
case GL_UNSIGNED_BYTE_2_3_3_REV:
for (i = 0; i < width; i++) {
int red = (int) (tmpRow[i*4+r] * 7.0);
int green = (int) (tmpRow[i*4+1] * 7.0);
int blue = (int) (tmpRow[i*4+b] * 3.0);
ubDst[i] = red | (green << 3) | (blue << 6);
}
break;
case GL_UNSIGNED_SHORT_5_6_5:
for (i = 0; i < width; i++) {
int red = (int) (tmpRow[i*4+r] * 31.0);
int green = (int) (tmpRow[i*4+1] * 63.0);
int blue = (int) (tmpRow[i*4+b] * 31.0);
usDst[i] = (red << 11) | (green << 5) | blue;
}
break;
case GL_UNSIGNED_SHORT_5_6_5_REV:
for (i = 0; i < width; i++) {
int red = (int) (tmpRow[i*4+r] * 31.0);
int green = (int) (tmpRow[i*4+1] * 63.0);
int blue = (int) (tmpRow[i*4+b] * 31.0);
usDst[i] = (blue << 11) | (green << 5) | red;
}
break;
#endif
default:
crError("unexpected type in put_row in pixel.c");
}
}
else if (dstFormat == GL_RGBA
#ifdef CR_OPENGL_VERSION_1_2
|| dstFormat == GL_BGRA
#endif
) {
int r, b;
if (dstFormat == GL_RGB) {
r = 0; b = 2;
}
else {
r = 2; b = 0;
}
switch (dstType) {
case GL_BYTE:
for (i = 0; i < width; i++) {
bDst[i*4+r] = FLOAT_TO_BYTE(tmpRow[i*4+0]);
bDst[i*4+1] = FLOAT_TO_BYTE(tmpRow[i*4+1]);
bDst[i*4+b] = FLOAT_TO_BYTE(tmpRow[i*4+2]);
bDst[i*4+3] = FLOAT_TO_BYTE(tmpRow[i*4+3]);
}
break;
case GL_UNSIGNED_BYTE:
for (i = 0; i < width; i++) {
ubDst[i*4+r] = FLOAT_TO_UBYTE(tmpRow[i*4+0]);
ubDst[i*4+1] = FLOAT_TO_UBYTE(tmpRow[i*4+1]);
ubDst[i*4+b] = FLOAT_TO_UBYTE(tmpRow[i*4+2]);
ubDst[i*4+3] = FLOAT_TO_UBYTE(tmpRow[i*4+3]);
}
break;
case GL_SHORT:
for (i = 0; i < width; i++) {
sDst[i*4+r] = FLOAT_TO_SHORT(tmpRow[i*4+0]);
sDst[i*4+1] = FLOAT_TO_SHORT(tmpRow[i*4+1]);
sDst[i*4+b] = FLOAT_TO_SHORT(tmpRow[i*4+2]);
sDst[i*4+3] = FLOAT_TO_SHORT(tmpRow[i*4+3]);
}
break;
case GL_UNSIGNED_SHORT:
for (i = 0; i < width; i++) {
usDst[i*4+r] = FLOAT_TO_USHORT(tmpRow[i*4+0]);
usDst[i*4+1] = FLOAT_TO_USHORT(tmpRow[i*4+1]);
usDst[i*4+b] = FLOAT_TO_USHORT(tmpRow[i*4+2]);
usDst[i*4+3] = FLOAT_TO_USHORT(tmpRow[i*4+3]);
}
break;
case GL_INT:
for (i = 0; i < width; i++) {
iDst[i*4+r] = FLOAT_TO_INT(tmpRow[i*4+0]);
iDst[i*4+1] = FLOAT_TO_INT(tmpRow[i*4+1]);
iDst[i*4+b] = FLOAT_TO_INT(tmpRow[i*4+2]);
iDst[i*4+3] = FLOAT_TO_INT(tmpRow[i*4+3]);
}
break;
case GL_UNSIGNED_INT:
for (i = 0; i < width; i++) {
uiDst[i*4+r] = FLOAT_TO_UINT(tmpRow[i*4+0]);
uiDst[i*4+1] = FLOAT_TO_UINT(tmpRow[i*4+1]);
uiDst[i*4+b] = FLOAT_TO_UINT(tmpRow[i*4+2]);
uiDst[i*4+3] = FLOAT_TO_UINT(tmpRow[i*4+3]);
}
break;
case GL_FLOAT:
for (i = 0; i < width; i++) {
fDst[i*4+r] = tmpRow[i*4+0];
fDst[i*4+1] = tmpRow[i*4+1];
fDst[i*4+b] = tmpRow[i*4+2];
fDst[i*4+3] = tmpRow[i*4+3];
}
break;
case GL_DOUBLE:
for (i = 0; i < width; i++) {
dDst[i*4+r] = tmpRow[i*4+0];
dDst[i*4+1] = tmpRow[i*4+1];
dDst[i*4+b] = tmpRow[i*4+2];
dDst[i*4+3] = tmpRow[i*4+3];
}
break;
#ifdef CR_OPENGL_VERSION_1_2
case GL_UNSIGNED_SHORT_5_5_5_1:
for (i = 0; i < width; i++) {
int red = (int) (tmpRow[i*4+r] * 31.0);
int green = (int) (tmpRow[i*4+1] * 31.0);
int blue = (int) (tmpRow[i*4+b] * 31.0);
int alpha = (int) (tmpRow[i*4+3]);
usDst[i] = (red << 11) | (green << 6) | (blue << 1) | alpha;
}
break;
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
for (i = 0; i < width; i++) {
int red = (int) (tmpRow[i*4+r] * 31.0);
int green = (int) (tmpRow[i*4+1] * 31.0);
int blue = (int) (tmpRow[i*4+b] * 31.0);
int alpha = (int) (tmpRow[i*4+3]);
usDst[i] = (alpha << 15) | (blue << 10) | (green << 5) | red;
}
break;
case GL_UNSIGNED_SHORT_4_4_4_4:
for (i = 0; i < width; i++) {
int red = (int) (tmpRow[i*4+r] * 15.0f);
int green = (int) (tmpRow[i*4+1] * 15.0f);
int blue = (int) (tmpRow[i*4+b] * 15.0f);
int alpha = (int) (tmpRow[i*4+3] * 15.0f);
usDst[i] = (red << 12) | (green << 8) | (blue << 4) | alpha;
}
break;
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
for (i = 0; i < width; i++) {
int red = (int) (tmpRow[i*4+r] * 15.0f);
int green = (int) (tmpRow[i*4+1] * 15.0f);
int blue = (int) (tmpRow[i*4+b] * 15.0f);
int alpha = (int) (tmpRow[i*4+3] * 15.0f);
usDst[i] = (alpha << 12) | (blue << 8) | (green << 4) | red;
}
break;
case GL_UNSIGNED_INT_8_8_8_8:
for (i = 0; i < width; i++) {
int red = (int) (tmpRow[i*4+r] * 255.0f);
int green = (int) (tmpRow[i*4+1] * 255.0f);
int blue = (int) (tmpRow[i*4+b] * 255.0f);
int alpha = (int) (tmpRow[i*4+3] * 255.0f);
uiDst[i] = (red << 24) | (green << 16) | (blue << 8) | alpha;
}
break;
case GL_UNSIGNED_INT_8_8_8_8_REV:
for (i = 0; i < width; i++) {
int red = (int) (tmpRow[i*4+r] * 255.0f);
int green = (int) (tmpRow[i*4+1] * 255.0f);
int blue = (int) (tmpRow[i*4+b] * 255.0f);
int alpha = (int) (tmpRow[i*4+3] * 255.0f);
uiDst[i] = (alpha << 24) | (blue << 16) | (green << 8) | red;
}
break;
case GL_UNSIGNED_INT_10_10_10_2:
for (i = 0; i < width; i++) {
int red = (int) (tmpRow[i*4+r] * 1023.0f);
int green = (int) (tmpRow[i*4+1] * 1023.0f);
int blue = (int) (tmpRow[i*4+b] * 1023.0f);
int alpha = (int) (tmpRow[i*4+3] * 3.0f);
uiDst[i] = (red << 22) | (green << 12) | (blue << 2) | alpha;
}
break;
case GL_UNSIGNED_INT_2_10_10_10_REV:
for (i = 0; i < width; i++) {
int red = (int) (tmpRow[i*4+r] * 1023.0f);
int green = (int) (tmpRow[i*4+1] * 1023.0f);
int blue = (int) (tmpRow[i*4+b] * 1023.0f);
int alpha = (int) (tmpRow[i*4+3] * 3.0f);
uiDst[i] = (alpha << 30) | (blue << 20) | (green << 10) | red;
}
break;
#endif
default:
crError("unexpected type in put_row in pixel.c");
}
}
else{
crError("unexpected dest type in put_row in pixel.c");
}
}
#ifdef _MSC_VER
# pragma optimize("", on) /* bird: see #pragma optimize("g", off) above. */
#endif
/**
* Byte-swap an array of GLushorts
*/
static void
swap2(GLushort *us, GLuint n)
{
GLuint i;
for (i = 0; i < n; i++) {
us[i] = (us[i] >> 8) | (us[i] << 8);
}
}
/**
* Byte-swap an array of GLuints
*/
static void
swap4(GLuint *ui, GLuint n)
{
GLuint i;
for (i = 0; i < n; i++) {
GLuint b = ui[i];
ui[i] = (b >> 24)
| ((b >> 8) & 0xff00)
| ((b << 8) & 0xff0000)
| ((b << 24) & 0xff000000);
}
}
/**
* Return number of bytes of storage needed to accomodate an
* image with the given format, type, and size.
* \return size in bytes or -1 if bad format or type
*/
unsigned int crImageSize( GLenum format, GLenum type, GLsizei width, GLsizei height )
{
unsigned int bytes = width * height;
if (type == GL_BITMAP)
{
/* This was wrong in the old code! */
bytes = ((width + 7) / 8) * height;
}
else if (GL_DEPTH_COMPONENT==format && type!=GL_FLOAT)
{
/*GL_DEPTH_COMPONENT with GL_UNSIGNED_BYTE seems is more that 1 byte per pixel*/
bytes = 4 * width * height * crPixelSize( format, type );
}
else
{
bytes = width * height * crPixelSize( format, type );
}
return bytes;
}
/**
* Return number of bytes of storage needed to accomodate a
* 3D texture with the give format, type, and size.
* \return size in bytes or -1 if bad format or type
*/
unsigned int crTextureSize( GLenum format, GLenum type, GLsizei width, GLsizei height, GLsizei depth )
{
unsigned int bytes = width * height;
if (type == GL_BITMAP)
{
/*
* Not sure about this one, so just multiply
* by the depth?
*/
bytes = ((width + 7) / 8) * height * depth;
}
else
{
bytes = width * height * depth * crPixelSize( format, type );
}
return bytes;
}
static const CRPixelPackState defaultPacking = {
0, /* rowLength */
0, /* skipRows */
0, /* skipPixels */
1, /* alignment */
0, /* imageHeight */
0, /* skipImages */
GL_FALSE, /* swapBytes */
GL_FALSE /* psLSBFirst */
};
void crPixelCopy1D( GLvoid *dstPtr, GLenum dstFormat, GLenum dstType,
const GLvoid *srcPtr, GLenum srcFormat, GLenum srcType,
GLsizei width, const CRPixelPackState *srcPacking )
{
crPixelCopy2D( width, 1,
dstPtr, dstFormat, dstType, NULL, /* dst */
srcPtr, srcFormat, srcType, srcPacking ); /* src */
}
void crPixelCopy2D( GLsizei width, GLsizei height,
GLvoid *dstPtr, GLenum dstFormat, GLenum dstType,
const CRPixelPackState *dstPacking,
const GLvoid *srcPtr, GLenum srcFormat, GLenum srcType,
const CRPixelPackState *srcPacking )
{
const char *src = (const char *) srcPtr;
char *dst = (char *) dstPtr;
int srcBytesPerPixel;
int dstBytesPerPixel;
int srcBytesPerRow;
int dstBytesPerRow;
int srcRowStrideBytes;
int dstRowStrideBytes;
int bytesPerRow;
int i;
if (!dstPacking)
dstPacking = &defaultPacking;
if (!srcPacking)
srcPacking = &defaultPacking;
if (srcType == GL_BITMAP)
{
CRASSERT(dstType == GL_BITMAP);
bytesPerRow = (width + 7) / 8;
if (srcPacking->rowLength > 0)
srcRowStrideBytes = (srcPacking->rowLength + 7) / 8;
else
srcRowStrideBytes = bytesPerRow;
dstRowStrideBytes = bytesPerRow;
for (i=0; i<height; i++) {
crMemcpy( (void *) dst, (const void *) src, bytesPerRow );
dst += dstRowStrideBytes;
src += srcRowStrideBytes;
}
}
else
{
CRASSERT(dstType != GL_BITMAP);
srcBytesPerPixel = crPixelSize( srcFormat, srcType );
dstBytesPerPixel = crPixelSize( dstFormat, dstType );
if (srcBytesPerPixel < 0 || dstBytesPerPixel < 0)
return;
/* Stride between rows (in bytes) */
if (srcPacking->rowLength > 0)
srcRowStrideBytes = srcPacking->rowLength * srcBytesPerPixel;
else
srcRowStrideBytes = width * srcBytesPerPixel;
if (dstPacking->rowLength > 0)
dstRowStrideBytes = dstPacking->rowLength * dstBytesPerPixel;
else
dstRowStrideBytes = width * dstBytesPerPixel;
/* bytes per row */
srcBytesPerRow = width * srcBytesPerPixel;
dstBytesPerRow = width * dstBytesPerPixel;
/* handle the alignment */
if (srcPacking->alignment != 1) {
i = ((long) src) % srcPacking->alignment;
if (i)
src += srcPacking->alignment - i;
i = (long) srcRowStrideBytes % srcPacking->alignment;
if (i)
srcRowStrideBytes += srcPacking->alignment - i;
}
if (dstPacking->alignment != 1) {
i = ((long) dst) % dstPacking->alignment;
if (i)
dst += dstPacking->alignment - i;
i = (long) dstRowStrideBytes % dstPacking->alignment;
if (i)
dstRowStrideBytes += dstPacking->alignment - i;
}
/* handle skip rows */
src += srcPacking->skipRows * srcRowStrideBytes;
dst += dstPacking->skipRows * dstRowStrideBytes;
/* handle skip pixels */
src += srcPacking->skipPixels * srcBytesPerPixel;
dst += dstPacking->skipPixels * dstBytesPerPixel;
/* we don't do LSBFirst yet */
if (srcPacking->psLSBFirst)
crError( "Sorry, no lsbfirst for you" );
if (dstPacking->psLSBFirst)
crError( "Sorry, no lsbfirst for you" );
if (srcFormat == dstFormat && srcType == dstType)
{
CRASSERT(srcBytesPerRow == dstBytesPerRow);
if (srcBytesPerRow==srcRowStrideBytes
&& srcRowStrideBytes==dstRowStrideBytes)
{
crMemcpy( (void *) dst, (const void *) src, height * srcBytesPerRow );
}
else
//crDebug("Sending texture, BytesPerRow!=RowStrideBytes");
for (i = 0; i < height; i++)
{
crMemcpy( (void *) dst, (const void *) src, srcBytesPerRow );
#if 0
/* check if src XOR dst swapping */
if (srcPacking->swapBytes ^ dstPacking->swapBytes) {
const GLint size = crSizeOfType(srcType);
CRASSERT(srcType == dstType);
if (size == 2) {
swap2((GLushort *) dst, srcBytesPerRow / size);
}
else if (size == 4) {
swap4((GLuint *) dst, srcBytesPerRow / size);
}
}
#endif
dst += dstRowStrideBytes;
src += srcRowStrideBytes;
}
}
else
{
/* need to do format and/or type conversion */
char *swapRow = NULL;
GLfloat *tmpRow = crAlloc( 4 * width * sizeof(GLfloat) );
crDebug("Converting texture format");
if (!tmpRow)
crError("Out of memory in crPixelCopy2D");
if (srcPacking->swapBytes) {
swapRow = (char *) crAlloc(width * srcBytesPerPixel);
if (!swapRow) {
crError("Out of memory in crPixelCopy2D");
}
}
for (i = 0; i < height; i++)
{
/* get src row as floats */
if (srcPacking->swapBytes) {
const GLint size = crSizeOfType(srcType);
const GLint bytes = width * srcBytesPerPixel;
crMemcpy(swapRow, src, bytes);
if (size == 2)
swap2((GLushort *) swapRow, bytes / 2);
else if (size == 4)
swap4((GLuint *) swapRow, bytes / 4);
get_row(swapRow, srcFormat, srcType, width, tmpRow);
}
else {
get_row(src, srcFormat, srcType, width, tmpRow);
}
/* store floats in dest row */
if (dstPacking->swapBytes) {
const GLint size = crSizeOfType(dstType);
const GLint bytes = dstBytesPerPixel * width;
put_row(dst, dstFormat, dstType, width, tmpRow);
if (size == 2)
swap2((GLushort *) dst, bytes / 2);
else if (size == 4)
swap4((GLuint *) dst, bytes / 4);
}
else {
put_row(dst, dstFormat, dstType, width, tmpRow);
}
/* increment pointers for next row */
dst += dstRowStrideBytes;
src += srcRowStrideBytes;
}
crFree(tmpRow);
if (swapRow)
crFree(swapRow);
}
}
}
void crPixelCopy3D( GLsizei width, GLsizei height, GLsizei depth,
GLvoid *dstPtr, GLenum dstFormat, GLenum dstType,
const CRPixelPackState *dstPacking,
const GLvoid *srcPtr, GLenum srcFormat, GLenum srcType,
const CRPixelPackState *srcPacking )
{
int tex_size = 0;
(void)srcPacking;
(void)srcType;
(void)srcFormat;
(void)dstPacking;
/*@todo this should be implemented properly*/
crWarning( "crPixelCopy3D: simply crMemcpy'ing from srcPtr to dstPtr" );
if (dstFormat != srcFormat)
crWarning( "crPixelCopy3D: formats don't match!" );
if (dstType != srcType)
crWarning( "crPixelCopy3D: formats don't match!" );
tex_size = RT_MIN (crTextureSize( dstFormat, dstType, width, height, depth ),
crTextureSize( srcFormat, srcType, width, height, depth ));
crMemcpy( (void *) dstPtr, (void *) srcPtr, tex_size );
}
/* Round N up to the next multiple of 8 */
#define CEIL8(N) (((N) + 7) & ~0x7)
void crBitmapCopy( GLsizei width, GLsizei height, GLubyte *dstPtr,
const GLubyte *srcPtr, const CRPixelPackState *srcPacking )
{
if (srcPacking->psLSBFirst == GL_FALSE &&
(srcPacking->rowLength == 0 || srcPacking->rowLength == width) &&
srcPacking->skipRows == 0 &&
srcPacking->skipPixels == 0 &&
srcPacking->alignment == 1) {
/* simple case */
crMemcpy(dstPtr, srcPtr, CEIL8(width) * height / 8);
}
else {
/* general case */
const GLubyte *srcRow;
const GLint dst_row_length = CEIL8(width) / 8;
GLubyte *dstRow;
GLint src_row_length;
GLint i, j;
if (srcPacking->rowLength > 0)
src_row_length = srcPacking->rowLength;
else
src_row_length = width;
switch (srcPacking->alignment) {
case 1:
src_row_length = ( ( src_row_length + 7 ) & ~7 ) >> 3;
break;
case 2:
src_row_length = ( ( src_row_length + 15 ) & ~15 ) >> 3;
break;
case 4:
src_row_length = ( ( src_row_length + 31 ) & ~31 ) >> 3;
break;
case 8:
src_row_length = ( ( src_row_length + 63 ) & ~63 ) >> 3;
break;
default:
crError( "Invalid unpack alignment in crBitmapCopy");
return;
}
/* src_row_length and dst_row_length are in bytes */
srcRow = srcPtr + src_row_length * srcPacking->skipRows;
dstRow = dstPtr;
if (srcPacking->psLSBFirst) {
for (j = 0; j < height; j++) {
crMemZero(dstRow, dst_row_length);
for (i = 0; i < width; i++) {
const GLint iByte = (i + srcPacking->skipPixels) / 8;
const GLint iBit = (i + srcPacking->skipPixels) % 8;
const GLubyte b = srcRow[iByte];
if (b & (1 << iBit))
dstRow[i / 8] |= (128 >> (i % 8));
}
srcRow += src_row_length;
dstRow += dst_row_length;
}
}
else {
/* unpack MSB first */
for (j = 0; j < height; j++) {
crMemZero(dstRow, dst_row_length);
for (i = 0; i < width; i++) {
const GLint iByte = (i + srcPacking->skipPixels) / 8;
const GLint iBit = (i + srcPacking->skipPixels) % 8;
const GLubyte b = srcRow[iByte];
if (b & (128 >> iBit))
dstRow[i / 8] |= (128 >> (i % 8));
}
srcRow += src_row_length;
dstRow += dst_row_length;
}
}
}
}