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third_party_mesa3d/src/mesa/main/pixel.c

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clean-up of header includes (Daryll)
1999-11-08 07:36:43 +00:00
/* $Id: pixel.c,v 1.4 1999/11/08 07:36:44 brianp Exp $ */
Initial revision
1999-08-19 00:55:39 +00:00
/*
* Mesa 3-D graphics library
* Version: 3.1
*
* Copyright (C) 1999 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
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* glPixelStore, glPixelTransfer, glPixelMap, glPixelZoom, etc.
*/
#ifdef PC_HEADER
#include "all.h"
#else
Fixed includes & added a few hooks for the DRI.
1999-10-08 09:27:09 +00:00
#ifndef XFree86Server
Initial revision
1999-08-19 00:55:39 +00:00
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
Fixed includes & added a few hooks for the DRI.
1999-10-08 09:27:09 +00:00
#else
#include "GL/xf86glx.h"
#endif
Initial revision
1999-08-19 00:55:39 +00:00
#include "context.h"
#include "macros.h"
#include "pixel.h"
#include "types.h"
#endif
/**********************************************************************/
/***** glPixelZoom *****/
/**********************************************************************/
void gl_PixelZoom( GLcontext *ctx, GLfloat xfactor, GLfloat yfactor )
{
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPixelZoom");
ctx->Pixel.ZoomX = xfactor;
ctx->Pixel.ZoomY = yfactor;
}
/**********************************************************************/
/***** glPixelStore *****/
/**********************************************************************/
void gl_PixelStorei( GLcontext *ctx, GLenum pname, GLint param )
{
/* NOTE: this call can't be compiled into the display list */
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPixelStore");
switch (pname) {
case GL_PACK_SWAP_BYTES:
ctx->Pack.SwapBytes = param ? GL_TRUE : GL_FALSE;
break;
case GL_PACK_LSB_FIRST:
ctx->Pack.LsbFirst = param ? GL_TRUE : GL_FALSE;
break;
case GL_PACK_ROW_LENGTH:
if (param<0) {
gl_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
}
else {
ctx->Pack.RowLength = param;
}
break;
case GL_PACK_IMAGE_HEIGHT:
if (param<0)
gl_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
else
ctx->Pack.ImageHeight = param;
break;
case GL_PACK_SKIP_PIXELS:
if (param<0) {
gl_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
}
else {
ctx->Pack.SkipPixels = param;
}
break;
case GL_PACK_SKIP_ROWS:
if (param<0) {
gl_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
}
else {
ctx->Pack.SkipRows = param;
}
break;
case GL_PACK_ALIGNMENT:
if (param==1 || param==2 || param==4 || param==8) {
ctx->Pack.Alignment = param;
}
else {
gl_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
}
break;
case GL_UNPACK_SWAP_BYTES:
ctx->Unpack.SwapBytes = param ? GL_TRUE : GL_FALSE;
break;
case GL_UNPACK_LSB_FIRST:
ctx->Unpack.LsbFirst = param ? GL_TRUE : GL_FALSE;
break;
case GL_UNPACK_ROW_LENGTH:
if (param<0) {
gl_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
}
else {
ctx->Unpack.RowLength = param;
}
break;
case GL_UNPACK_IMAGE_HEIGHT:
if (param<0)
gl_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
else
ctx->Unpack.ImageHeight = param;
break;
case GL_UNPACK_SKIP_PIXELS:
if (param<0) {
gl_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
}
else {
ctx->Unpack.SkipPixels = param;
}
break;
case GL_UNPACK_SKIP_ROWS:
if (param<0) {
gl_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
}
else {
ctx->Unpack.SkipRows = param;
}
break;
case GL_UNPACK_ALIGNMENT:
if (param==1 || param==2 || param==4 || param==8) {
ctx->Unpack.Alignment = param;
}
else {
gl_error( ctx, GL_INVALID_VALUE, "glPixelStore" );
}
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glPixelStore" );
}
}
/**********************************************************************/
/***** glPixelMap *****/
/**********************************************************************/
void gl_PixelMapfv( GLcontext *ctx,
GLenum map, GLint mapsize, const GLfloat *values )
{
GLint i;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPixelMapfv");
if (mapsize<0 || mapsize>MAX_PIXEL_MAP_TABLE) {
gl_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );
return;
}
if (map>=GL_PIXEL_MAP_S_TO_S && map<=GL_PIXEL_MAP_I_TO_A) {
/* test that mapsize is a power of two */
GLuint p;
GLboolean ok = GL_FALSE;
for (p=1; p<=MAX_PIXEL_MAP_TABLE; p=p<<1) {
if ( (p&mapsize) == p ) {
ok = GL_TRUE;
break;
}
}
if (!ok) {
gl_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );
return;
}
}
switch (map) {
case GL_PIXEL_MAP_S_TO_S:
ctx->Pixel.MapStoSsize = mapsize;
for (i=0;i<mapsize;i++) {
ctx->Pixel.MapStoS[i] = (GLint) values[i];
}
break;
case GL_PIXEL_MAP_I_TO_I:
ctx->Pixel.MapItoIsize = mapsize;
for (i=0;i<mapsize;i++) {
ctx->Pixel.MapItoI[i] = (GLint) values[i];
}
break;
case GL_PIXEL_MAP_I_TO_R:
ctx->Pixel.MapItoRsize = mapsize;
for (i=0;i<mapsize;i++) {
GLfloat val = CLAMP( values[i], 0.0, 1.0 );
ctx->Pixel.MapItoR[i] = val;
ctx->Pixel.MapItoR8[i] = (GLint) (val * 255.0F);
}
break;
case GL_PIXEL_MAP_I_TO_G:
ctx->Pixel.MapItoGsize = mapsize;
for (i=0;i<mapsize;i++) {
GLfloat val = CLAMP( values[i], 0.0, 1.0 );
ctx->Pixel.MapItoG[i] = val;
ctx->Pixel.MapItoG8[i] = (GLint) (val * 255.0F);
}
break;
case GL_PIXEL_MAP_I_TO_B:
ctx->Pixel.MapItoBsize = mapsize;
for (i=0;i<mapsize;i++) {
GLfloat val = CLAMP( values[i], 0.0, 1.0 );
ctx->Pixel.MapItoB[i] = val;
ctx->Pixel.MapItoB8[i] = (GLint) (val * 255.0F);
}
break;
case GL_PIXEL_MAP_I_TO_A:
ctx->Pixel.MapItoAsize = mapsize;
for (i=0;i<mapsize;i++) {
GLfloat val = CLAMP( values[i], 0.0, 1.0 );
ctx->Pixel.MapItoA[i] = val;
ctx->Pixel.MapItoA8[i] = (GLint) (val * 255.0F);
}
break;
case GL_PIXEL_MAP_R_TO_R:
ctx->Pixel.MapRtoRsize = mapsize;
for (i=0;i<mapsize;i++) {
ctx->Pixel.MapRtoR[i] = CLAMP( values[i], 0.0, 1.0 );
}
break;
case GL_PIXEL_MAP_G_TO_G:
ctx->Pixel.MapGtoGsize = mapsize;
for (i=0;i<mapsize;i++) {
ctx->Pixel.MapGtoG[i] = CLAMP( values[i], 0.0, 1.0 );
}
break;
case GL_PIXEL_MAP_B_TO_B:
ctx->Pixel.MapBtoBsize = mapsize;
for (i=0;i<mapsize;i++) {
ctx->Pixel.MapBtoB[i] = CLAMP( values[i], 0.0, 1.0 );
}
break;
case GL_PIXEL_MAP_A_TO_A:
ctx->Pixel.MapAtoAsize = mapsize;
for (i=0;i<mapsize;i++) {
ctx->Pixel.MapAtoA[i] = CLAMP( values[i], 0.0, 1.0 );
}
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glPixelMapfv(map)" );
}
}
void gl_GetPixelMapfv( GLcontext *ctx, GLenum map, GLfloat *values )
{
GLint i;
ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetPixelMapfv");
switch (map) {
case GL_PIXEL_MAP_I_TO_I:
for (i=0;i<ctx->Pixel.MapItoIsize;i++) {
values[i] = (GLfloat) ctx->Pixel.MapItoI[i];
}
break;
case GL_PIXEL_MAP_S_TO_S:
for (i=0;i<ctx->Pixel.MapStoSsize;i++) {
values[i] = (GLfloat) ctx->Pixel.MapStoS[i];
}
break;
case GL_PIXEL_MAP_I_TO_R:
MEMCPY(values,ctx->Pixel.MapItoR,ctx->Pixel.MapItoRsize*sizeof(GLfloat));
break;
case GL_PIXEL_MAP_I_TO_G:
MEMCPY(values,ctx->Pixel.MapItoG,ctx->Pixel.MapItoGsize*sizeof(GLfloat));
break;
case GL_PIXEL_MAP_I_TO_B:
MEMCPY(values,ctx->Pixel.MapItoB,ctx->Pixel.MapItoBsize*sizeof(GLfloat));
break;
case GL_PIXEL_MAP_I_TO_A:
MEMCPY(values,ctx->Pixel.MapItoA,ctx->Pixel.MapItoAsize*sizeof(GLfloat));
break;
case GL_PIXEL_MAP_R_TO_R:
MEMCPY(values,ctx->Pixel.MapRtoR,ctx->Pixel.MapRtoRsize*sizeof(GLfloat));
break;
case GL_PIXEL_MAP_G_TO_G:
MEMCPY(values,ctx->Pixel.MapGtoG,ctx->Pixel.MapGtoGsize*sizeof(GLfloat));
break;
case GL_PIXEL_MAP_B_TO_B:
MEMCPY(values,ctx->Pixel.MapBtoB,ctx->Pixel.MapBtoBsize*sizeof(GLfloat));
break;
case GL_PIXEL_MAP_A_TO_A:
MEMCPY(values,ctx->Pixel.MapAtoA,ctx->Pixel.MapAtoAsize*sizeof(GLfloat));
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" );
}
}
void gl_GetPixelMapuiv( GLcontext *ctx, GLenum map, GLuint *values )
{
GLint i;
ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetPixelMapfv");
switch (map) {
case GL_PIXEL_MAP_I_TO_I:
MEMCPY(values, ctx->Pixel.MapItoI, ctx->Pixel.MapItoIsize*sizeof(GLint));
break;
case GL_PIXEL_MAP_S_TO_S:
MEMCPY(values, ctx->Pixel.MapStoS, ctx->Pixel.MapStoSsize*sizeof(GLint));
break;
case GL_PIXEL_MAP_I_TO_R:
for (i=0;i<ctx->Pixel.MapItoRsize;i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapItoR[i] );
}
break;
case GL_PIXEL_MAP_I_TO_G:
for (i=0;i<ctx->Pixel.MapItoGsize;i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapItoG[i] );
}
break;
case GL_PIXEL_MAP_I_TO_B:
for (i=0;i<ctx->Pixel.MapItoBsize;i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapItoB[i] );
}
break;
case GL_PIXEL_MAP_I_TO_A:
for (i=0;i<ctx->Pixel.MapItoAsize;i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapItoA[i] );
}
break;
case GL_PIXEL_MAP_R_TO_R:
for (i=0;i<ctx->Pixel.MapRtoRsize;i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapRtoR[i] );
}
break;
case GL_PIXEL_MAP_G_TO_G:
for (i=0;i<ctx->Pixel.MapGtoGsize;i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapGtoG[i] );
}
break;
case GL_PIXEL_MAP_B_TO_B:
for (i=0;i<ctx->Pixel.MapBtoBsize;i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapBtoB[i] );
}
break;
case GL_PIXEL_MAP_A_TO_A:
for (i=0;i<ctx->Pixel.MapAtoAsize;i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapAtoA[i] );
}
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" );
}
}
void gl_GetPixelMapusv( GLcontext *ctx, GLenum map, GLushort *values )
{
GLint i;
ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetPixelMapfv");
switch (map) {
case GL_PIXEL_MAP_I_TO_I:
for (i=0;i<ctx->Pixel.MapItoIsize;i++) {
values[i] = (GLushort) ctx->Pixel.MapItoI[i];
}
break;
case GL_PIXEL_MAP_S_TO_S:
for (i=0;i<ctx->Pixel.MapStoSsize;i++) {
values[i] = (GLushort) ctx->Pixel.MapStoS[i];
}
break;
case GL_PIXEL_MAP_I_TO_R:
for (i=0;i<ctx->Pixel.MapItoRsize;i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapItoR[i] );
}
break;
case GL_PIXEL_MAP_I_TO_G:
for (i=0;i<ctx->Pixel.MapItoGsize;i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapItoG[i] );
}
break;
case GL_PIXEL_MAP_I_TO_B:
for (i=0;i<ctx->Pixel.MapItoBsize;i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapItoB[i] );
}
break;
case GL_PIXEL_MAP_I_TO_A:
for (i=0;i<ctx->Pixel.MapItoAsize;i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapItoA[i] );
}
break;
case GL_PIXEL_MAP_R_TO_R:
for (i=0;i<ctx->Pixel.MapRtoRsize;i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapRtoR[i] );
}
break;
case GL_PIXEL_MAP_G_TO_G:
for (i=0;i<ctx->Pixel.MapGtoGsize;i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapGtoG[i] );
}
break;
case GL_PIXEL_MAP_B_TO_B:
for (i=0;i<ctx->Pixel.MapBtoBsize;i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapBtoB[i] );
}
break;
case GL_PIXEL_MAP_A_TO_A:
for (i=0;i<ctx->Pixel.MapAtoAsize;i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapAtoA[i] );
}
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" );
}
}
/**********************************************************************/
/***** glPixelTransfer *****/
/**********************************************************************/
/*
* Implements glPixelTransfer[fi] whether called immediately or from a
* display list.
*/
void gl_PixelTransferf( GLcontext *ctx, GLenum pname, GLfloat param )
{
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPixelTransfer");
switch (pname) {
case GL_MAP_COLOR:
ctx->Pixel.MapColorFlag = param ? GL_TRUE : GL_FALSE;
break;
case GL_MAP_STENCIL:
ctx->Pixel.MapStencilFlag = param ? GL_TRUE : GL_FALSE;
break;
case GL_INDEX_SHIFT:
ctx->Pixel.IndexShift = (GLint) param;
break;
case GL_INDEX_OFFSET:
ctx->Pixel.IndexOffset = (GLint) param;
break;
case GL_RED_SCALE:
ctx->Pixel.RedScale = param;
break;
case GL_RED_BIAS:
ctx->Pixel.RedBias = param;
break;
case GL_GREEN_SCALE:
ctx->Pixel.GreenScale = param;
break;
case GL_GREEN_BIAS:
ctx->Pixel.GreenBias = param;
break;
case GL_BLUE_SCALE:
ctx->Pixel.BlueScale = param;
break;
case GL_BLUE_BIAS:
ctx->Pixel.BlueBias = param;
break;
case GL_ALPHA_SCALE:
ctx->Pixel.AlphaScale = param;
break;
case GL_ALPHA_BIAS:
ctx->Pixel.AlphaBias = param;
break;
case GL_DEPTH_SCALE:
ctx->Pixel.DepthScale = param;
break;
case GL_DEPTH_BIAS:
ctx->Pixel.DepthBias = param;
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glPixelTransfer(pname)" );
return;
}
if (ctx->Pixel.RedScale!=1.0F || ctx->Pixel.RedBias!=0.0F ||
ctx->Pixel.GreenScale!=1.0F || ctx->Pixel.GreenBias!=0.0F ||
ctx->Pixel.BlueScale!=1.0F || ctx->Pixel.BlueBias!=0.0F ||
ctx->Pixel.AlphaScale!=1.0F || ctx->Pixel.AlphaBias!=0.0F) {
ctx->Pixel.ScaleOrBiasRGBA = GL_TRUE;
}
else {
ctx->Pixel.ScaleOrBiasRGBA = GL_FALSE;
}
}
/*
* Pixel processing functions
*/
/*
* Apply scale and bias factors to an array of RGBA pixels.
*/
void gl_scale_and_bias_color( const GLcontext *ctx, GLuint n,
GLfloat red[], GLfloat green[],
GLfloat blue[], GLfloat alpha[] )
{
GLuint i;
for (i=0;i<n;i++) {
GLfloat r = red[i] * ctx->Pixel.RedScale + ctx->Pixel.RedBias;
GLfloat g = green[i] * ctx->Pixel.GreenScale + ctx->Pixel.GreenBias;
GLfloat b = blue[i] * ctx->Pixel.BlueScale + ctx->Pixel.BlueBias;
GLfloat a = alpha[i] * ctx->Pixel.AlphaScale + ctx->Pixel.AlphaBias;
red[i] = CLAMP( r, 0.0F, 1.0F );
green[i] = CLAMP( g, 0.0F, 1.0F );
blue[i] = CLAMP( b, 0.0F, 1.0F );
alpha[i] = CLAMP( a, 0.0F, 1.0F );
}
}
/*
* Apply scale and bias factors to an array of RGBA pixels.
*/
void gl_scale_and_bias_rgba( const GLcontext *ctx, GLuint n, GLubyte rgba[][4] )
{
GLfloat rbias = ctx->Pixel.RedBias * 255.0F;
GLfloat gbias = ctx->Pixel.GreenBias * 255.0F;
GLfloat bbias = ctx->Pixel.BlueBias * 255.0F;
GLfloat abias = ctx->Pixel.AlphaBias * 255.0F;
GLuint i;
for (i=0;i<n;i++) {
GLint r = (GLint) (rgba[i][RCOMP] * ctx->Pixel.RedScale + rbias);
GLint g = (GLint) (rgba[i][GCOMP] * ctx->Pixel.GreenScale + gbias);
GLint b = (GLint) (rgba[i][BCOMP] * ctx->Pixel.BlueScale + bbias);
GLint a = (GLint) (rgba[i][ACOMP] * ctx->Pixel.AlphaScale + abias);
rgba[i][RCOMP] = CLAMP( r, 0, 255 );
rgba[i][GCOMP] = CLAMP( g, 0, 255 );
rgba[i][BCOMP] = CLAMP( b, 0, 255 );
rgba[i][ACOMP] = CLAMP( a, 0, 255 );
}
}
added a few more scale/bias/lookup functions (for future use)
1999-10-30 08:20:57 +00:00
/*
* Apply scale and bias factors to an array of RGBA pixels.
*/
void gl_scale_and_bias_rgba_float( const GLcontext *ctx, GLuint n, GLfloat rgba[][4] )
{
if (ctx->Pixel.RedScale != 1.0 || ctx->Pixel.RedBias != 0.0) {
const GLfloat scale = ctx->Pixel.RedScale;
const GLfloat bias = ctx->Pixel.RedBias;
GLuint i;
for (i = 0; i < n; i++) {
rgba[i][RCOMP] = rgba[i][RCOMP] * scale + bias;
}
}
if (ctx->Pixel.GreenScale != 1.0 || ctx->Pixel.GreenBias != 0.0) {
const GLfloat scale = ctx->Pixel.GreenScale;
const GLfloat bias = ctx->Pixel.GreenBias;
GLuint i;
for (i = 0; i < n; i++) {
rgba[i][GCOMP] = rgba[i][GCOMP] * scale + bias;
}
}
if (ctx->Pixel.BlueScale != 1.0 || ctx->Pixel.BlueBias != 0.0) {
const GLfloat scale = ctx->Pixel.BlueScale;
const GLfloat bias = ctx->Pixel.BlueBias;
GLuint i;
for (i = 0; i < n; i++) {
rgba[i][BCOMP] = rgba[i][BCOMP] * scale + bias;
}
}
if (ctx->Pixel.AlphaScale != 1.0 || ctx->Pixel.AlphaBias != 0.0) {
const GLfloat scale = ctx->Pixel.AlphaScale;
const GLfloat bias = ctx->Pixel.AlphaBias;
GLuint i;
for (i = 0; i < n; i++) {
rgba[i][ACOMP] = rgba[i][ACOMP] * scale + bias;
}
}
}
Initial revision
1999-08-19 00:55:39 +00:00
/*
* Apply pixel mapping to an array of RGBA pixels.
*/
void gl_map_rgba( const GLcontext *ctx, GLuint n, GLubyte rgba[][4] )
{
GLfloat rscale = (ctx->Pixel.MapRtoRsize - 1) / 255.0F;
GLfloat gscale = (ctx->Pixel.MapGtoGsize - 1) / 255.0F;
GLfloat bscale = (ctx->Pixel.MapBtoBsize - 1) / 255.0F;
GLfloat ascale = (ctx->Pixel.MapAtoAsize - 1) / 255.0F;
GLuint i;
for (i=0;i<n;i++) {
GLint ir = (GLint) (rgba[i][RCOMP] * rscale);
GLint ig = (GLint) (rgba[i][GCOMP] * gscale);
GLint ib = (GLint) (rgba[i][BCOMP] * bscale);
GLint ia = (GLint) (rgba[i][ACOMP] * ascale);
rgba[i][RCOMP] = (GLint) (ctx->Pixel.MapRtoR[ir] * 255.0F);
rgba[i][GCOMP] = (GLint) (ctx->Pixel.MapGtoG[ig] * 255.0F);
rgba[i][BCOMP] = (GLint) (ctx->Pixel.MapBtoB[ib] * 255.0F);
rgba[i][ACOMP] = (GLint) (ctx->Pixel.MapAtoA[ia] * 255.0F);
}
}
added a few more scale/bias/lookup functions (for future use)
1999-10-30 08:20:57 +00:00
/*
* Apply pixel mapping to an array of floating point RGBA pixels.
*/
void gl_map_rgba_float( const GLcontext *ctx, GLuint n, GLfloat rgba[][4] )
{
const GLfloat rscale = ctx->Pixel.MapRtoRsize - 1;
const GLfloat gscale = ctx->Pixel.MapGtoGsize - 1;
const GLfloat bscale = ctx->Pixel.MapBtoBsize - 1;
const GLfloat ascale = ctx->Pixel.MapAtoAsize - 1;
const GLfloat *rMap = ctx->Pixel.MapRtoR;
const GLfloat *gMap = ctx->Pixel.MapGtoG;
const GLfloat *bMap = ctx->Pixel.MapBtoB;
const GLfloat *aMap = ctx->Pixel.MapAtoA;
GLuint i;
for (i=0;i<n;i++) {
rgba[i][RCOMP] = rMap[(GLint) (rgba[i][RCOMP] * rscale + 0.5F)];
rgba[i][GCOMP] = gMap[(GLint) (rgba[i][GCOMP] * gscale + 0.5F)];
rgba[i][BCOMP] = bMap[(GLint) (rgba[i][BCOMP] * bscale + 0.5F)];
rgba[i][ACOMP] = aMap[(GLint) (rgba[i][ACOMP] * ascale + 0.5F)];
}
}
Initial revision
1999-08-19 00:55:39 +00:00
/*
* Apply pixel mapping to an array of RGBA pixels.
*/
void gl_map_color( const GLcontext *ctx, GLuint n,
GLfloat red[], GLfloat green[],
GLfloat blue[], GLfloat alpha[] )
{
added a few more scale/bias/lookup functions (for future use)
1999-10-30 08:20:57 +00:00
GLfloat rscale = ctx->Pixel.MapRtoRsize - 1;
GLfloat gscale = ctx->Pixel.MapGtoGsize - 1;
GLfloat bscale = ctx->Pixel.MapBtoBsize - 1;
GLfloat ascale = ctx->Pixel.MapAtoAsize - 1;
Initial revision
1999-08-19 00:55:39 +00:00
GLuint i;
for (i=0;i<n;i++) {
added a few more scale/bias/lookup functions (for future use)
1999-10-30 08:20:57 +00:00
red[i] = ctx->Pixel.MapRtoR[ (GLint) (red[i] * rscale + 0.5F) ];
green[i] = ctx->Pixel.MapGtoG[ (GLint) (green[i] * gscale + 0.5F) ];
blue[i] = ctx->Pixel.MapBtoB[ (GLint) (blue[i] * bscale + 0.5F) ];
alpha[i] = ctx->Pixel.MapAtoA[ (GLint) (alpha[i] * ascale + 0.5F) ];
Initial revision
1999-08-19 00:55:39 +00:00
}
}
/*
* Apply color index shift and offset to an array of pixels.
*/
void gl_shift_and_offset_ci( const GLcontext *ctx, GLuint n, GLuint indexes[] )
{
GLint shift = ctx->Pixel.IndexShift;
GLint offset = ctx->Pixel.IndexOffset;
GLuint i;
if (shift > 0) {
for (i=0;i<n;i++) {
indexes[i] = (indexes[i] << shift) + offset;
}
}
else if (shift < 0) {
shift = -shift;
for (i=0;i<n;i++) {
indexes[i] = (indexes[i] >> shift) + offset;
}
}
else {
for (i=0;i<n;i++) {
indexes[i] = indexes[i] + offset;
}
}
}
/*
* Apply color index mapping to color indexes.
*/
void gl_map_ci( const GLcontext *ctx, GLuint n, GLuint index[] )
{
GLuint mask = ctx->Pixel.MapItoIsize - 1;
GLuint i;
for (i=0;i<n;i++) {
index[i] = ctx->Pixel.MapItoI[ index[i] & mask ];
}
}
/*
added a few more scale/bias/lookup functions (for future use)
1999-10-30 08:20:57 +00:00
* Map color indexes to rgba values.
Initial revision
1999-08-19 00:55:39 +00:00
*/
void gl_map_ci_to_rgba( const GLcontext *ctx, GLuint n, const GLuint index[],
GLubyte rgba[][4] )
{
GLuint rmask = ctx->Pixel.MapItoRsize - 1;
GLuint gmask = ctx->Pixel.MapItoGsize - 1;
GLuint bmask = ctx->Pixel.MapItoBsize - 1;
GLuint amask = ctx->Pixel.MapItoAsize - 1;
const GLubyte *rMap = ctx->Pixel.MapItoR8;
const GLubyte *gMap = ctx->Pixel.MapItoG8;
const GLubyte *bMap = ctx->Pixel.MapItoB8;
const GLubyte *aMap = ctx->Pixel.MapItoA8;
GLuint i;
for (i=0;i<n;i++) {
rgba[i][RCOMP] = rMap[index[i] & rmask];
rgba[i][GCOMP] = gMap[index[i] & gmask];
rgba[i][BCOMP] = bMap[index[i] & bmask];
rgba[i][ACOMP] = aMap[index[i] & amask];
}
}
added a few more scale/bias/lookup functions (for future use)
1999-10-30 08:20:57 +00:00
/*
* Map color indexes to float rgba values.
*/
void gl_map_ci_to_rgba_float( const GLcontext *ctx, GLuint n, const GLuint index[],
GLfloat rgba[][4] )
{
GLuint rmask = ctx->Pixel.MapItoRsize - 1;
GLuint gmask = ctx->Pixel.MapItoGsize - 1;
GLuint bmask = ctx->Pixel.MapItoBsize - 1;
GLuint amask = ctx->Pixel.MapItoAsize - 1;
const GLfloat *rMap = ctx->Pixel.MapItoR;
const GLfloat *gMap = ctx->Pixel.MapItoG;
const GLfloat *bMap = ctx->Pixel.MapItoB;
const GLfloat *aMap = ctx->Pixel.MapItoA;
GLuint i;
for (i=0;i<n;i++) {
rgba[i][RCOMP] = rMap[index[i] & rmask];
rgba[i][GCOMP] = gMap[index[i] & gmask];
rgba[i][BCOMP] = bMap[index[i] & bmask];
rgba[i][ACOMP] = aMap[index[i] & amask];
}
}
Initial revision
1999-08-19 00:55:39 +00:00
/*
* Map 8-bit color indexes to rgb values.
*/
void gl_map_ci8_to_rgba( const GLcontext *ctx, GLuint n, const GLubyte index[],
GLubyte rgba[][4] )
{
GLuint rmask = ctx->Pixel.MapItoRsize - 1;
GLuint gmask = ctx->Pixel.MapItoGsize - 1;
GLuint bmask = ctx->Pixel.MapItoBsize - 1;
GLuint amask = ctx->Pixel.MapItoAsize - 1;
const GLubyte *rMap = ctx->Pixel.MapItoR8;
const GLubyte *gMap = ctx->Pixel.MapItoG8;
const GLubyte *bMap = ctx->Pixel.MapItoB8;
const GLubyte *aMap = ctx->Pixel.MapItoA8;
GLuint i;
for (i=0;i<n;i++) {
rgba[i][RCOMP] = rMap[index[i] & rmask];
rgba[i][GCOMP] = gMap[index[i] & gmask];
rgba[i][BCOMP] = bMap[index[i] & bmask];
rgba[i][ACOMP] = aMap[index[i] & amask];
}
}
void gl_map_ci_to_color( const GLcontext *ctx, GLuint n, const GLuint index[],
GLfloat r[], GLfloat g[],
GLfloat b[], GLfloat a[] )
{
GLuint rmask = ctx->Pixel.MapItoRsize - 1;
GLuint gmask = ctx->Pixel.MapItoGsize - 1;
GLuint bmask = ctx->Pixel.MapItoBsize - 1;
GLuint amask = ctx->Pixel.MapItoAsize - 1;
GLuint i;
for (i=0;i<n;i++) {
r[i] = ctx->Pixel.MapItoR[index[i] & rmask];
g[i] = ctx->Pixel.MapItoG[index[i] & gmask];
b[i] = ctx->Pixel.MapItoB[index[i] & bmask];
a[i] = ctx->Pixel.MapItoA[index[i] & amask];
}
}
void gl_shift_and_offset_stencil( const GLcontext *ctx, GLuint n,
GLstencil stencil[] )
{
GLuint i;
GLint shift = ctx->Pixel.IndexShift;
GLint offset = ctx->Pixel.IndexOffset;
if (shift > 0) {
for (i=0;i<n;i++) {
stencil[i] = (stencil[i] << shift) + offset;
}
}
else if (shift < 0) {
shift = -shift;
for (i=0;i<n;i++) {
stencil[i] = (stencil[i] >> shift) + offset;
}
}
else {
for (i=0;i<n;i++) {
stencil[i] = stencil[i] + offset;
}
}
}
void gl_map_stencil( const GLcontext *ctx, GLuint n, GLstencil stencil[] )
{
GLuint mask = ctx->Pixel.MapStoSsize - 1;
GLuint i;
for (i=0;i<n;i++) {
stencil[i] = ctx->Pixel.MapStoS[ stencil[i] & mask ];
}
}
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