-/* $Id: pixel.c,v 1.19 2000/11/22 07:32:17 joukj Exp $ */
+/* $Id: pixel.c,v 1.29 2001/05/23 23:55:01 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
*
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2001 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"),
_mesa_PixelZoom( GLfloat xfactor, GLfloat yfactor )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPixelZoom");
+ if (ctx->Pixel.ZoomX == xfactor &&
+ ctx->Pixel.ZoomY == yfactor)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.ZoomX = xfactor;
ctx->Pixel.ZoomY = yfactor;
- ctx->NewState |= _NEW_PIXEL;
}
{
/* NOTE: this call can't be compiled into the display list */
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPixelStore");
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (pname) {
case GL_PACK_SWAP_BYTES:
+ if (param == (GLint)ctx->Pack.SwapBytes)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
ctx->Pack.SwapBytes = param ? GL_TRUE : GL_FALSE;
break;
case GL_PACK_LSB_FIRST:
+ if (param == (GLint)ctx->Pack.LsbFirst)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
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;
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
+ return;
}
+ if (ctx->Pack.RowLength == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
+ 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;
+ if (param<0) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
+ return;
+ }
+ if (ctx->Pack.ImageHeight == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
+ 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;
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
+ return;
}
+ if (ctx->Pack.SkipPixels == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
+ 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;
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
+ return;
}
+ if (ctx->Pack.SkipRows == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
+ ctx->Pack.SkipRows = param;
break;
case GL_PACK_SKIP_IMAGES:
if (param<0) {
- gl_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
- }
- else {
- ctx->Pack.SkipImages = param;
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
+ return;
}
+ if (ctx->Pack.SkipImages == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
+ ctx->Pack.SkipImages = 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)" );
+ if (param!=1 && param!=2 && param!=4 && param!=8) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
+ return;
}
+ if (ctx->Pack.Alignment == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
+ ctx->Pack.Alignment = param;
break;
case GL_UNPACK_SWAP_BYTES:
+ if (param == (GLint)ctx->Unpack.SwapBytes)
+ return;
+ if ((GLint)ctx->Unpack.SwapBytes == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
ctx->Unpack.SwapBytes = param ? GL_TRUE : GL_FALSE;
break;
case GL_UNPACK_LSB_FIRST:
+ if (param == (GLint)ctx->Unpack.LsbFirst)
+ return;
+ if ((GLint)ctx->Unpack.LsbFirst == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
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;
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
+ return;
}
+ if (ctx->Unpack.RowLength == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
+ 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;
+ if (param<0) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
+ return;
+ }
+ if (ctx->Unpack.ImageHeight == param)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
+ 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;
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
+ return;
}
+ if (ctx->Unpack.SkipPixels == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
+ 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;
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
+ return;
}
+ if (ctx->Unpack.SkipRows == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
+ ctx->Unpack.SkipRows = param;
break;
case GL_UNPACK_SKIP_IMAGES:
if (param < 0) {
- gl_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
- }
- else {
- ctx->Unpack.SkipImages = param;
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" );
+ return;
}
+ if (ctx->Unpack.SkipImages == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
+ ctx->Unpack.SkipImages = 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" );
+ if (param!=1 && param!=2 && param!=4 && param!=8) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore" );
+ return;
}
+ if (ctx->Unpack.Alignment == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PACKUNPACK);
+ ctx->Unpack.Alignment = param;
break;
default:
- gl_error( ctx, GL_INVALID_ENUM, "glPixelStore" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glPixelStore" );
+ return;
}
-
- ctx->NewState |= _NEW_PACKUNPACK;
}
{
GLint i;
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPixelMapfv");
-
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
if (mapsize<0 || mapsize>MAX_PIXEL_MAP_TABLE) {
- gl_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );
return;
}
}
}
if (!ok) {
- gl_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );
+ _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );
return;
}
}
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
+
switch (map) {
case GL_PIXEL_MAP_S_TO_S:
ctx->Pixel.MapStoSsize = mapsize;
}
break;
default:
- gl_error( ctx, GL_INVALID_ENUM, "glPixelMapfv(map)" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glPixelMapfv(map)" );
}
- ctx->NewState |= _NEW_PIXEL;
}
{
GET_CURRENT_CONTEXT(ctx);
GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetPixelMapfv");
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (map) {
case GL_PIXEL_MAP_I_TO_I:
MEMCPY(values,ctx->Pixel.MapAtoA,ctx->Pixel.MapAtoAsize*sizeof(GLfloat));
break;
default:
- gl_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" );
}
}
{
GET_CURRENT_CONTEXT(ctx);
GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetPixelMapfv");
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (map) {
case GL_PIXEL_MAP_I_TO_I:
}
break;
default:
- gl_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" );
}
}
{
GET_CURRENT_CONTEXT(ctx);
GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetPixelMapfv");
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (map) {
case GL_PIXEL_MAP_I_TO_I:
}
break;
default:
- gl_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" );
}
}
_mesa_PixelTransferf( GLenum pname, GLfloat param )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPixelTransfer");
-
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (pname) {
case GL_MAP_COLOR:
+ if (ctx->Pixel.MapColorFlag == param ? GL_TRUE : GL_FALSE)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.MapColorFlag = param ? GL_TRUE : GL_FALSE;
break;
case GL_MAP_STENCIL:
+ if (ctx->Pixel.MapStencilFlag == param ? GL_TRUE : GL_FALSE)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.MapStencilFlag = param ? GL_TRUE : GL_FALSE;
break;
case GL_INDEX_SHIFT:
+ if (ctx->Pixel.IndexShift == (GLint) param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.IndexShift = (GLint) param;
break;
case GL_INDEX_OFFSET:
+ if (ctx->Pixel.IndexOffset == (GLint) param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.IndexOffset = (GLint) param;
break;
case GL_RED_SCALE:
+ if (ctx->Pixel.RedScale == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.RedScale = param;
break;
case GL_RED_BIAS:
+ if (ctx->Pixel.RedBias == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.RedBias = param;
break;
case GL_GREEN_SCALE:
+ if (ctx->Pixel.GreenScale == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.GreenScale = param;
break;
case GL_GREEN_BIAS:
+ if (ctx->Pixel.GreenBias == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.GreenBias = param;
break;
case GL_BLUE_SCALE:
+ if (ctx->Pixel.BlueScale == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.BlueScale = param;
break;
case GL_BLUE_BIAS:
+ if (ctx->Pixel.BlueBias == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.BlueBias = param;
break;
case GL_ALPHA_SCALE:
+ if (ctx->Pixel.AlphaScale == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.AlphaScale = param;
break;
case GL_ALPHA_BIAS:
+ if (ctx->Pixel.AlphaBias == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.AlphaBias = param;
break;
case GL_DEPTH_SCALE:
+ if (ctx->Pixel.DepthScale == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.DepthScale = param;
break;
case GL_DEPTH_BIAS:
+ if (ctx->Pixel.DepthBias == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.DepthBias = param;
break;
case GL_POST_COLOR_MATRIX_RED_SCALE:
+ if (ctx->Pixel.PostColorMatrixScale[0] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostColorMatrixScale[0] = param;
break;
case GL_POST_COLOR_MATRIX_RED_BIAS:
+ if (ctx->Pixel.PostColorMatrixBias[0] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostColorMatrixBias[0] = param;
break;
case GL_POST_COLOR_MATRIX_GREEN_SCALE:
+ if (ctx->Pixel.PostColorMatrixScale[1] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostColorMatrixScale[1] = param;
break;
case GL_POST_COLOR_MATRIX_GREEN_BIAS:
+ if (ctx->Pixel.PostColorMatrixBias[1] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostColorMatrixBias[1] = param;
break;
case GL_POST_COLOR_MATRIX_BLUE_SCALE:
+ if (ctx->Pixel.PostColorMatrixScale[2] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostColorMatrixScale[2] = param;
break;
case GL_POST_COLOR_MATRIX_BLUE_BIAS:
+ if (ctx->Pixel.PostColorMatrixBias[2] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostColorMatrixBias[2] = param;
break;
case GL_POST_COLOR_MATRIX_ALPHA_SCALE:
+ if (ctx->Pixel.PostColorMatrixScale[3] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostColorMatrixScale[3] = param;
break;
case GL_POST_COLOR_MATRIX_ALPHA_BIAS:
+ if (ctx->Pixel.PostColorMatrixBias[3] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostColorMatrixBias[3] = param;
break;
case GL_POST_CONVOLUTION_RED_SCALE:
+ if (ctx->Pixel.PostConvolutionScale[0] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostConvolutionScale[0] = param;
break;
case GL_POST_CONVOLUTION_RED_BIAS:
+ if (ctx->Pixel.PostConvolutionBias[0] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostConvolutionBias[0] = param;
break;
case GL_POST_CONVOLUTION_GREEN_SCALE:
+ if (ctx->Pixel.PostConvolutionScale[1] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostConvolutionScale[1] = param;
break;
case GL_POST_CONVOLUTION_GREEN_BIAS:
+ if (ctx->Pixel.PostConvolutionBias[1] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostConvolutionBias[1] = param;
break;
case GL_POST_CONVOLUTION_BLUE_SCALE:
+ if (ctx->Pixel.PostConvolutionScale[2] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostConvolutionScale[2] = param;
break;
case GL_POST_CONVOLUTION_BLUE_BIAS:
+ if (ctx->Pixel.PostConvolutionBias[2] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostConvolutionBias[2] = param;
break;
case GL_POST_CONVOLUTION_ALPHA_SCALE:
+ if (ctx->Pixel.PostConvolutionScale[2] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostConvolutionScale[2] = param;
break;
case GL_POST_CONVOLUTION_ALPHA_BIAS:
+ if (ctx->Pixel.PostConvolutionBias[2] == param)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostConvolutionBias[2] = param;
break;
default:
- gl_error( ctx, GL_INVALID_ENUM, "glPixelTransfer(pname)" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glPixelTransfer(pname)" );
return;
}
-
- /* signal to recompute the bitmask */
- ctx->NewState |= _NEW_PIXEL;
}
* Apply scale and bias factors to an array of RGBA pixels.
*/
void
-_mesa_scale_and_bias_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4])
+_mesa_scale_and_bias_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4],
+ GLfloat rScale, GLfloat gScale,
+ GLfloat bScale, GLfloat aScale,
+ GLfloat rBias, GLfloat gBias,
+ GLfloat bBias, GLfloat aBias)
{
- if (ctx->Pixel.RedScale != 1.0 || ctx->Pixel.RedBias != 0.0) {
- const GLfloat scale = ctx->Pixel.RedScale;
- const GLfloat bias = ctx->Pixel.RedBias;
+ if (rScale != 1.0 || rBias != 0.0) {
GLuint i;
for (i = 0; i < n; i++) {
- rgba[i][RCOMP] = rgba[i][RCOMP] * scale + bias;
+ rgba[i][RCOMP] = rgba[i][RCOMP] * rScale + rBias;
}
}
- if (ctx->Pixel.GreenScale != 1.0 || ctx->Pixel.GreenBias != 0.0) {
- const GLfloat scale = ctx->Pixel.GreenScale;
- const GLfloat bias = ctx->Pixel.GreenBias;
+ if (gScale != 1.0 || gBias != 0.0) {
GLuint i;
for (i = 0; i < n; i++) {
- rgba[i][GCOMP] = rgba[i][GCOMP] * scale + bias;
+ rgba[i][GCOMP] = rgba[i][GCOMP] * gScale + gBias;
}
}
- if (ctx->Pixel.BlueScale != 1.0 || ctx->Pixel.BlueBias != 0.0) {
- const GLfloat scale = ctx->Pixel.BlueScale;
- const GLfloat bias = ctx->Pixel.BlueBias;
+ if (bScale != 1.0 || bBias != 0.0) {
GLuint i;
for (i = 0; i < n; i++) {
- rgba[i][BCOMP] = rgba[i][BCOMP] * scale + bias;
+ rgba[i][BCOMP] = rgba[i][BCOMP] * bScale + bBias;
}
}
- if (ctx->Pixel.AlphaScale != 1.0 || ctx->Pixel.AlphaBias != 0.0) {
- const GLfloat scale = ctx->Pixel.AlphaScale;
- const GLfloat bias = ctx->Pixel.AlphaBias;
+ if (aScale != 1.0 || aBias != 0.0) {
GLuint i;
for (i = 0; i < n; i++) {
- rgba[i][ACOMP] = rgba[i][ACOMP] * scale + bias;
+ rgba[i][ACOMP] = rgba[i][ACOMP] * aScale + aBias;
}
}
}
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)];
+ GLfloat r = CLAMP(rgba[i][RCOMP], 0.0F, 1.0F);
+ GLfloat g = CLAMP(rgba[i][GCOMP], 0.0F, 1.0F);
+ GLfloat b = CLAMP(rgba[i][BCOMP], 0.0F, 1.0F);
+ GLfloat a = CLAMP(rgba[i][ACOMP], 0.0F, 1.0F);
+ rgba[i][RCOMP] = rMap[IROUND(r * rscale)];
+ rgba[i][GCOMP] = gMap[IROUND(g * gscale)];
+ rgba[i][BCOMP] = bMap[IROUND(b * bscale)];
+ rgba[i][ACOMP] = aMap[IROUND(a * ascale)];
}
}
GLuint n, GLfloat rgba[][4])
{
ASSERT(table->FloatTable);
- if (!table->Table)
+ if (!table->Table || table->Size == 0)
return;
switch (table->Format) {
case GL_INTENSITY:
/* replace RGBA with I */
if (!table->FloatTable) {
- const GLfloat scale = (GLfloat) (table->Size - 1);
+ const GLint max = table->Size - 1;
+ const GLfloat scale = (GLfloat) max;
const GLchan *lut = (const GLchan *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
- GLint j = (GLint) (rgba[i][RCOMP] * scale + 0.5F);
- GLfloat c = CHAN_TO_FLOAT(lut[j]);
+ GLint j = IROUND(rgba[i][RCOMP] * scale);
+ GLfloat c = CHAN_TO_FLOAT(lut[CLAMP(j, 0, 1)]);
rgba[i][RCOMP] = rgba[i][GCOMP] =
rgba[i][BCOMP] = rgba[i][ACOMP] = c;
}
}
else {
- const GLfloat scale = (GLfloat) (table->Size - 1);
+ const GLint max = table->Size - 1;
+ const GLfloat scale = (GLfloat) max;
const GLfloat *lut = (const GLfloat *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
- GLint j = (GLint) (rgba[i][RCOMP] * scale + 0.5F);
- GLfloat c = lut[j];
+ GLint j = IROUND(rgba[i][RCOMP] * scale);
+ GLfloat c = lut[CLAMP(j, 0, max)];
rgba[i][RCOMP] = rgba[i][GCOMP] =
rgba[i][BCOMP] = rgba[i][ACOMP] = c;
}
case GL_LUMINANCE:
/* replace RGB with L */
if (!table->FloatTable) {
- const GLfloat scale = (GLfloat) (table->Size - 1);
+ const GLint max = table->Size - 1;
+ const GLfloat scale = (GLfloat) max;
const GLchan *lut = (const GLchan *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
- GLint j = (GLint) (rgba[i][RCOMP] * scale + 0.5F);
- GLfloat c = CHAN_TO_FLOAT(lut[j]);
+ GLint j = IROUND(rgba[i][RCOMP] * scale);
+ GLfloat c = CHAN_TO_FLOAT(lut[CLAMP(j, 0, max)]);
rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = c;
}
}
else {
- const GLfloat scale = (GLfloat) (table->Size - 1);
+ const GLint max = table->Size - 1;
+ const GLfloat scale = (GLfloat) max;
const GLfloat *lut = (const GLfloat *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
- GLint j = (GLint) (rgba[i][RCOMP] * scale + 0.5F);
- GLfloat c = lut[j];
+ GLint j = IROUND(rgba[i][RCOMP] * scale);
+ GLfloat c = lut[CLAMP(j, 0, max)];
rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = c;
}
}
case GL_ALPHA:
/* replace A with A */
if (!table->FloatTable) {
- const GLfloat scale = (GLfloat) (table->Size - 1);
+ const GLint max = table->Size - 1;
+ const GLfloat scale = (GLfloat) max;
const GLchan *lut = (const GLchan *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
- GLint j = (GLint) (rgba[i][ACOMP] * scale + 0.5F);
- rgba[i][ACOMP] = CHAN_TO_FLOAT(lut[j]);
+ GLint j = IROUND(rgba[i][ACOMP] * scale);
+ rgba[i][ACOMP] = CHAN_TO_FLOAT(lut[CLAMP(j, 0, max)]);
}
}
else {
- const GLfloat scale = (GLfloat) (table->Size - 1);
+ const GLint max = table->Size - 1;
+ const GLfloat scale = (GLfloat) max;
const GLfloat *lut = (const GLfloat *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
- GLint j = (GLint) (rgba[i][ACOMP] * scale + 0.5F);
- rgba[i][ACOMP] = lut[j];
+ GLint j = IROUND(rgba[i][ACOMP] * scale);
+ rgba[i][ACOMP] = lut[CLAMP(j, 0, max)];
}
}
break;
case GL_LUMINANCE_ALPHA:
/* replace RGBA with LLLA */
if (!table->FloatTable) {
- const GLfloat scale = (GLfloat) (table->Size - 1);
+ const GLint max = table->Size - 1;
+ const GLfloat scale = (GLfloat) max;
const GLchan *lut = (const GLchan *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
- GLint jL = (GLint) (rgba[i][RCOMP] * scale + 0.5F);
- GLint jA = (GLint) (rgba[i][ACOMP] * scale + 0.5F);
- GLfloat luminance = CHAN_TO_FLOAT(lut[jL * 2 + 0]);
- GLfloat alpha = CHAN_TO_FLOAT(lut[jA * 2 + 1]);
+ GLint jL = IROUND(rgba[i][RCOMP] * scale);
+ GLint jA = IROUND(rgba[i][ACOMP] * scale);
+ GLfloat luminance, alpha;
+ jL = CLAMP(jL, 0, max);
+ jA = CLAMP(jA, 0, max);
+ luminance = CHAN_TO_FLOAT(lut[jL * 2 + 0]);
+ alpha = CHAN_TO_FLOAT(lut[jA * 2 + 1]);
rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = luminance;
rgba[i][ACOMP] = alpha;;
}
}
else {
- const GLfloat scale = (GLfloat) (table->Size - 1);
+ const GLint max = table->Size - 1;
+ const GLfloat scale = (GLfloat) max;
const GLfloat *lut = (const GLfloat *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
- GLint jL = (GLint) (rgba[i][RCOMP] * scale + 0.5F);
- GLint jA = (GLint) (rgba[i][ACOMP] * scale + 0.5F);
- GLfloat luminance = lut[jL * 2 + 0];
- GLfloat alpha = lut[jA * 2 + 1];
+ GLint jL = IROUND(rgba[i][RCOMP] * scale);
+ GLint jA = IROUND(rgba[i][ACOMP] * scale);
+ GLfloat luminance, alpha;
+ jL = CLAMP(jL, 0, max);
+ jA = CLAMP(jA, 0, max);
+ luminance = lut[jL * 2 + 0];
+ alpha = lut[jA * 2 + 1];
rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = luminance;
rgba[i][ACOMP] = alpha;;
}
case GL_RGB:
/* replace RGB with RGB */
if (!table->FloatTable) {
- const GLfloat scale = (GLfloat) (table->Size - 1);
+ const GLint max = table->Size - 1;
+ const GLfloat scale = (GLfloat) max;
const GLchan *lut = (const GLchan *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
- GLint jR = (GLint) (rgba[i][RCOMP] * scale + 0.5F);
- GLint jG = (GLint) (rgba[i][GCOMP] * scale + 0.5F);
- GLint jB = (GLint) (rgba[i][BCOMP] * scale + 0.5F);
+ GLint jR = IROUND(rgba[i][RCOMP] * scale);
+ GLint jG = IROUND(rgba[i][GCOMP] * scale);
+ GLint jB = IROUND(rgba[i][BCOMP] * scale);
+ jR = CLAMP(jR, 0, max);
+ jG = CLAMP(jG, 0, max);
+ jB = CLAMP(jB, 0, max);
rgba[i][RCOMP] = CHAN_TO_FLOAT(lut[jR * 3 + 0]);
rgba[i][GCOMP] = CHAN_TO_FLOAT(lut[jG * 3 + 1]);
rgba[i][BCOMP] = CHAN_TO_FLOAT(lut[jB * 3 + 2]);
}
}
else {
- const GLfloat scale = (GLfloat) (table->Size - 1);
+ const GLint max = table->Size - 1;
+ const GLfloat scale = (GLfloat) max;
const GLfloat *lut = (const GLfloat *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
- GLint jR = (GLint) (rgba[i][RCOMP] * scale + 0.5F);
- GLint jG = (GLint) (rgba[i][GCOMP] * scale + 0.5F);
- GLint jB = (GLint) (rgba[i][BCOMP] * scale + 0.5F);
+ GLint jR = IROUND(rgba[i][RCOMP] * scale);
+ GLint jG = IROUND(rgba[i][GCOMP] * scale);
+ GLint jB = IROUND(rgba[i][BCOMP] * scale);
+ jR = CLAMP(jR, 0, max);
+ jG = CLAMP(jG, 0, max);
+ jB = CLAMP(jB, 0, max);
rgba[i][RCOMP] = lut[jR * 3 + 0];
rgba[i][GCOMP] = lut[jG * 3 + 1];
rgba[i][BCOMP] = lut[jB * 3 + 2];
case GL_RGBA:
/* replace RGBA with RGBA */
if (!table->FloatTable) {
- const GLfloat scale = (GLfloat) (table->Size - 1);
+ const GLint max = table->Size - 1;
+ const GLfloat scale = (GLfloat) max;
const GLchan *lut = (const GLchan *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
- GLint jR = (GLint) (rgba[i][RCOMP] * scale + 0.5F);
- GLint jG = (GLint) (rgba[i][GCOMP] * scale + 0.5F);
- GLint jB = (GLint) (rgba[i][BCOMP] * scale + 0.5F);
- GLint jA = (GLint) (rgba[i][ACOMP] * scale + 0.5F);
+ GLint jR = IROUND(rgba[i][RCOMP] * scale);
+ GLint jG = IROUND(rgba[i][GCOMP] * scale);
+ GLint jB = IROUND(rgba[i][BCOMP] * scale);
+ GLint jA = IROUND(rgba[i][ACOMP] * scale);
+ jR = CLAMP(jR, 0, max);
+ jG = CLAMP(jG, 0, max);
+ jB = CLAMP(jB, 0, max);
+ jA = CLAMP(jA, 0, max);
rgba[i][RCOMP] = CHAN_TO_FLOAT(lut[jR * 4 + 0]);
rgba[i][GCOMP] = CHAN_TO_FLOAT(lut[jG * 4 + 1]);
rgba[i][BCOMP] = CHAN_TO_FLOAT(lut[jB * 4 + 2]);
}
}
else {
- const GLfloat scale = (GLfloat) (table->Size - 1);
+ const GLint max = table->Size - 1;
+ const GLfloat scale = (GLfloat) max;
const GLfloat *lut = (const GLfloat *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
- GLint jR = (GLint) (rgba[i][RCOMP] * scale + 0.5F);
- GLint jG = (GLint) (rgba[i][GCOMP] * scale + 0.5F);
- GLint jB = (GLint) (rgba[i][BCOMP] * scale + 0.5F);
- GLint jA = (GLint) (rgba[i][ACOMP] * scale + 0.5F);
+ GLint jR = IROUND(rgba[i][RCOMP] * scale);
+ GLint jG = IROUND(rgba[i][GCOMP] * scale);
+ GLint jB = IROUND(rgba[i][BCOMP] * scale);
+ GLint jA = IROUND(rgba[i][ACOMP] * scale);
+ jR = CLAMP(jR, 0, max);
+ jG = CLAMP(jG, 0, max);
+ jB = CLAMP(jB, 0, max);
+ jA = CLAMP(jA, 0, max);
rgba[i][RCOMP] = lut[jR * 4 + 0];
rgba[i][GCOMP] = lut[jG * 4 + 1];
rgba[i][BCOMP] = lut[jB * 4 + 2];
}
break;
default:
- gl_problem(NULL, "Bad format in _mesa_lookup_rgba");
+ _mesa_problem(NULL, "Bad format in _mesa_lookup_rgba");
return;
}
}
const GLfloat *aMap = ctx->Pixel.MapItoA;
GLuint i;
for (i=0;i<n;i++) {
- rgba[i][RCOMP] = FLOAT_TO_CHAN(rMap[index[i] & rmask]);
- rgba[i][GCOMP] = FLOAT_TO_CHAN(gMap[index[i] & gmask]);
- rgba[i][BCOMP] = FLOAT_TO_CHAN(bMap[index[i] & bmask]);
- rgba[i][ACOMP] = FLOAT_TO_CHAN(aMap[index[i] & amask]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][RCOMP], rMap[index[i] & rmask]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][GCOMP], gMap[index[i] & gmask]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][BCOMP], bMap[index[i] & bmask]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][ACOMP], aMap[index[i] & amask]);
}
#endif
}
const GLfloat *aMap = ctx->Pixel.MapItoA;
GLuint i;
for (i=0;i<n;i++) {
- rgba[i][RCOMP] = FLOAT_TO_CHAN(rMap[index[i] & rmask]);
- rgba[i][GCOMP] = FLOAT_TO_CHAN(gMap[index[i] & gmask]);
- rgba[i][BCOMP] = FLOAT_TO_CHAN(bMap[index[i] & bmask]);
- rgba[i][ACOMP] = FLOAT_TO_CHAN(aMap[index[i] & amask]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][RCOMP], rMap[index[i] & rmask]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][GCOMP], gMap[index[i] & gmask]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][BCOMP], bMap[index[i] & bmask]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][ACOMP], aMap[index[i] & amask]);
}
#endif
}
stencil[i] = ctx->Pixel.MapStoS[ stencil[i] & mask ];
}
}
+
+
+
+/*
+ * This function converts an array of GLchan colors to GLfloat colors.
+ * Most importantly, it undoes the non-uniform quantization of pixel
+ * values introduced when we convert shallow (< 8 bit) pixel values
+ * to GLubytes in the ctx->Driver.ReadRGBASpan() functions.
+ * This fixes a number of OpenGL conformance failures when running on
+ * 16bpp displays, for example.
+ */
+void
+_mesa_chan_to_float_span(const GLcontext *ctx, GLuint n,
+ CONST GLchan rgba[][4], GLfloat rgbaf[][4])
+{
+ const GLuint rShift = CHAN_BITS - ctx->Visual.redBits;
+ const GLuint gShift = CHAN_BITS - ctx->Visual.greenBits;
+ const GLuint bShift = CHAN_BITS - ctx->Visual.blueBits;
+ GLuint aShift;
+ const GLfloat rScale = 1.0 / (GLfloat) ((1 << ctx->Visual.redBits ) - 1);
+ const GLfloat gScale = 1.0 / (GLfloat) ((1 << ctx->Visual.greenBits) - 1);
+ const GLfloat bScale = 1.0 / (GLfloat) ((1 << ctx->Visual.blueBits ) - 1);
+ GLfloat aScale;
+ GLuint i;
+
+ if (ctx->Visual.alphaBits > 0) {
+ aShift = CHAN_BITS - ctx->Visual.alphaBits;
+ aScale = 1.0 / (GLfloat) ((1 << ctx->Visual.alphaBits) - 1);
+ }
+ else {
+ aShift = 0;
+ aScale = 1.0F / CHAN_MAXF;
+ }
+
+ for (i = 0; i < n; i++) {
+ const GLint r = rgba[i][RCOMP] >> rShift;
+ const GLint g = rgba[i][GCOMP] >> gShift;
+ const GLint b = rgba[i][BCOMP] >> bShift;
+ const GLint a = rgba[i][ACOMP] >> aShift;
+ rgbaf[i][RCOMP] = (GLfloat) r * rScale;
+ rgbaf[i][GCOMP] = (GLfloat) g * gScale;
+ rgbaf[i][BCOMP] = (GLfloat) b * bScale;
+ rgbaf[i][ACOMP] = (GLfloat) a * aScale;
+ }
+}
projects / mesa.git / blobdiff