mesa: refactor: move pixel map/scale/bias code into image.c
pixel.c is just the API-related code now.
This commit is contained in:
Brian Paul
committed by
Keith Whitwell
Keith Whitwell
parent
533c1dbe75
commit
18d2822905
@@ -2,7 +2,7 @@
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* Mesa 3-D graphics library
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* Version: 7.1
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*
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* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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@@ -1011,6 +1011,426 @@ _mesa_pack_bitmap( GLint width, GLint height, const GLubyte *source,
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}
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/**********************************************************************/
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/***** Pixel processing functions ******/
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/**********************************************************************/
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/*
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* Apply scale and bias factors to an array of RGBA pixels.
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*/
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void
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_mesa_scale_and_bias_rgba(GLuint n, GLfloat rgba[][4],
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GLfloat rScale, GLfloat gScale,
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GLfloat bScale, GLfloat aScale,
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GLfloat rBias, GLfloat gBias,
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GLfloat bBias, GLfloat aBias)
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{
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if (rScale != 1.0 || rBias != 0.0) {
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GLuint i;
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for (i = 0; i < n; i++) {
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rgba[i][RCOMP] = rgba[i][RCOMP] * rScale + rBias;
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}
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}
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if (gScale != 1.0 || gBias != 0.0) {
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GLuint i;
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for (i = 0; i < n; i++) {
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rgba[i][GCOMP] = rgba[i][GCOMP] * gScale + gBias;
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}
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}
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if (bScale != 1.0 || bBias != 0.0) {
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GLuint i;
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for (i = 0; i < n; i++) {
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rgba[i][BCOMP] = rgba[i][BCOMP] * bScale + bBias;
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}
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}
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if (aScale != 1.0 || aBias != 0.0) {
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GLuint i;
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for (i = 0; i < n; i++) {
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rgba[i][ACOMP] = rgba[i][ACOMP] * aScale + aBias;
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}
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}
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}
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/*
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* Apply pixel mapping to an array of floating point RGBA pixels.
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*/
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void
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_mesa_map_rgba( const GLcontext *ctx, GLuint n, GLfloat rgba[][4] )
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{
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const GLfloat rscale = (GLfloat) (ctx->PixelMaps.RtoR.Size - 1);
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const GLfloat gscale = (GLfloat) (ctx->PixelMaps.GtoG.Size - 1);
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const GLfloat bscale = (GLfloat) (ctx->PixelMaps.BtoB.Size - 1);
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const GLfloat ascale = (GLfloat) (ctx->PixelMaps.AtoA.Size - 1);
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const GLfloat *rMap = ctx->PixelMaps.RtoR.Map;
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const GLfloat *gMap = ctx->PixelMaps.GtoG.Map;
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const GLfloat *bMap = ctx->PixelMaps.BtoB.Map;
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const GLfloat *aMap = ctx->PixelMaps.AtoA.Map;
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GLuint i;
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for (i=0;i<n;i++) {
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GLfloat r = CLAMP(rgba[i][RCOMP], 0.0F, 1.0F);
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GLfloat g = CLAMP(rgba[i][GCOMP], 0.0F, 1.0F);
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GLfloat b = CLAMP(rgba[i][BCOMP], 0.0F, 1.0F);
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GLfloat a = CLAMP(rgba[i][ACOMP], 0.0F, 1.0F);
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rgba[i][RCOMP] = rMap[IROUND(r * rscale)];
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rgba[i][GCOMP] = gMap[IROUND(g * gscale)];
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rgba[i][BCOMP] = bMap[IROUND(b * bscale)];
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rgba[i][ACOMP] = aMap[IROUND(a * ascale)];
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}
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}
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/*
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* Apply the color matrix and post color matrix scaling and biasing.
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*/
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void
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_mesa_transform_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4])
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{
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const GLfloat rs = ctx->Pixel.PostColorMatrixScale[0];
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const GLfloat rb = ctx->Pixel.PostColorMatrixBias[0];
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const GLfloat gs = ctx->Pixel.PostColorMatrixScale[1];
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const GLfloat gb = ctx->Pixel.PostColorMatrixBias[1];
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const GLfloat bs = ctx->Pixel.PostColorMatrixScale[2];
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const GLfloat bb = ctx->Pixel.PostColorMatrixBias[2];
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const GLfloat as = ctx->Pixel.PostColorMatrixScale[3];
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const GLfloat ab = ctx->Pixel.PostColorMatrixBias[3];
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const GLfloat *m = ctx->ColorMatrixStack.Top->m;
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GLuint i;
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for (i = 0; i < n; i++) {
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const GLfloat r = rgba[i][RCOMP];
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const GLfloat g = rgba[i][GCOMP];
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const GLfloat b = rgba[i][BCOMP];
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const GLfloat a = rgba[i][ACOMP];
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rgba[i][RCOMP] = (m[0] * r + m[4] * g + m[ 8] * b + m[12] * a) * rs + rb;
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rgba[i][GCOMP] = (m[1] * r + m[5] * g + m[ 9] * b + m[13] * a) * gs + gb;
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rgba[i][BCOMP] = (m[2] * r + m[6] * g + m[10] * b + m[14] * a) * bs + bb;
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rgba[i][ACOMP] = (m[3] * r + m[7] * g + m[11] * b + m[15] * a) * as + ab;
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}
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}
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/**
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* Apply a color table lookup to an array of floating point RGBA colors.
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*/
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void
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_mesa_lookup_rgba_float(const struct gl_color_table *table,
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GLuint n, GLfloat rgba[][4])
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{
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const GLint max = table->Size - 1;
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const GLfloat scale = (GLfloat) max;
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const GLfloat *lut = table->TableF;
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GLuint i;
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if (!table->TableF || table->Size == 0)
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return;
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switch (table->_BaseFormat) {
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case GL_INTENSITY:
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/* replace RGBA with I */
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for (i = 0; i < n; i++) {
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GLint j = IROUND(rgba[i][RCOMP] * scale);
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GLfloat c = lut[CLAMP(j, 0, max)];
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rgba[i][RCOMP] =
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rgba[i][GCOMP] =
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rgba[i][BCOMP] =
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rgba[i][ACOMP] = c;
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}
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break;
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case GL_LUMINANCE:
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/* replace RGB with L */
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for (i = 0; i < n; i++) {
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GLint j = IROUND(rgba[i][RCOMP] * scale);
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GLfloat c = lut[CLAMP(j, 0, max)];
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rgba[i][RCOMP] =
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rgba[i][GCOMP] =
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rgba[i][BCOMP] = c;
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}
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break;
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case GL_ALPHA:
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/* replace A with A */
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for (i = 0; i < n; i++) {
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GLint j = IROUND(rgba[i][ACOMP] * scale);
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rgba[i][ACOMP] = lut[CLAMP(j, 0, max)];
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}
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break;
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case GL_LUMINANCE_ALPHA:
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/* replace RGBA with LLLA */
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for (i = 0; i < n; i++) {
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GLint jL = IROUND(rgba[i][RCOMP] * scale);
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GLint jA = IROUND(rgba[i][ACOMP] * scale);
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GLfloat luminance, alpha;
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jL = CLAMP(jL, 0, max);
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jA = CLAMP(jA, 0, max);
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luminance = lut[jL * 2 + 0];
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alpha = lut[jA * 2 + 1];
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rgba[i][RCOMP] =
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rgba[i][GCOMP] =
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rgba[i][BCOMP] = luminance;
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rgba[i][ACOMP] = alpha;;
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}
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break;
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case GL_RGB:
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/* replace RGB with RGB */
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for (i = 0; i < n; i++) {
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GLint jR = IROUND(rgba[i][RCOMP] * scale);
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GLint jG = IROUND(rgba[i][GCOMP] * scale);
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GLint jB = IROUND(rgba[i][BCOMP] * scale);
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jR = CLAMP(jR, 0, max);
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jG = CLAMP(jG, 0, max);
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jB = CLAMP(jB, 0, max);
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rgba[i][RCOMP] = lut[jR * 3 + 0];
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rgba[i][GCOMP] = lut[jG * 3 + 1];
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rgba[i][BCOMP] = lut[jB * 3 + 2];
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}
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break;
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case GL_RGBA:
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/* replace RGBA with RGBA */
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for (i = 0; i < n; i++) {
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GLint jR = IROUND(rgba[i][RCOMP] * scale);
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GLint jG = IROUND(rgba[i][GCOMP] * scale);
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GLint jB = IROUND(rgba[i][BCOMP] * scale);
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GLint jA = IROUND(rgba[i][ACOMP] * scale);
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jR = CLAMP(jR, 0, max);
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jG = CLAMP(jG, 0, max);
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jB = CLAMP(jB, 0, max);
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jA = CLAMP(jA, 0, max);
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rgba[i][RCOMP] = lut[jR * 4 + 0];
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rgba[i][GCOMP] = lut[jG * 4 + 1];
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rgba[i][BCOMP] = lut[jB * 4 + 2];
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rgba[i][ACOMP] = lut[jA * 4 + 3];
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}
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break;
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default:
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_mesa_problem(NULL, "Bad format in _mesa_lookup_rgba_float");
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return;
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}
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}
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/**
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* Apply a color table lookup to an array of ubyte/RGBA colors.
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*/
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void
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_mesa_lookup_rgba_ubyte(const struct gl_color_table *table,
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GLuint n, GLubyte rgba[][4])
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{
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const GLubyte *lut = table->TableUB;
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const GLfloat scale = (GLfloat) (table->Size - 1) / (GLfloat)255.0;
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GLuint i;
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if (!table->TableUB || table->Size == 0)
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return;
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switch (table->_BaseFormat) {
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case GL_INTENSITY:
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/* replace RGBA with I */
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if (table->Size == 256) {
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for (i = 0; i < n; i++) {
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const GLubyte c = lut[rgba[i][RCOMP]];
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rgba[i][RCOMP] =
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rgba[i][GCOMP] =
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rgba[i][BCOMP] =
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rgba[i][ACOMP] = c;
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}
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}
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else {
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for (i = 0; i < n; i++) {
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GLint j = IROUND((GLfloat) rgba[i][RCOMP] * scale);
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rgba[i][RCOMP] =
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rgba[i][GCOMP] =
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rgba[i][BCOMP] =
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rgba[i][ACOMP] = lut[j];
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}
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}
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break;
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case GL_LUMINANCE:
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/* replace RGB with L */
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if (table->Size == 256) {
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for (i = 0; i < n; i++) {
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const GLubyte c = lut[rgba[i][RCOMP]];
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rgba[i][RCOMP] =
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rgba[i][GCOMP] =
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rgba[i][BCOMP] = c;
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}
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}
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else {
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for (i = 0; i < n; i++) {
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GLint j = IROUND((GLfloat) rgba[i][RCOMP] * scale);
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rgba[i][RCOMP] =
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rgba[i][GCOMP] =
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rgba[i][BCOMP] = lut[j];
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}
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}
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break;
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case GL_ALPHA:
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/* replace A with A */
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if (table->Size == 256) {
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for (i = 0; i < n; i++) {
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rgba[i][ACOMP] = lut[rgba[i][ACOMP]];
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}
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}
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else {
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for (i = 0; i < n; i++) {
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GLint j = IROUND((GLfloat) rgba[i][ACOMP] * scale);
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rgba[i][ACOMP] = lut[j];
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}
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}
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break;
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case GL_LUMINANCE_ALPHA:
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/* replace RGBA with LLLA */
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if (table->Size == 256) {
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for (i = 0; i < n; i++) {
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GLubyte l = lut[rgba[i][RCOMP] * 2 + 0];
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GLubyte a = lut[rgba[i][ACOMP] * 2 + 1];;
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rgba[i][RCOMP] =
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rgba[i][GCOMP] =
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rgba[i][BCOMP] = l;
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rgba[i][ACOMP] = a;
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}
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}
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else {
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for (i = 0; i < n; i++) {
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GLint jL = IROUND((GLfloat) rgba[i][RCOMP] * scale);
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GLint jA = IROUND((GLfloat) rgba[i][ACOMP] * scale);
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GLubyte luminance = lut[jL * 2 + 0];
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GLubyte alpha = lut[jA * 2 + 1];
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rgba[i][RCOMP] =
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rgba[i][GCOMP] =
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rgba[i][BCOMP] = luminance;
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rgba[i][ACOMP] = alpha;
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}
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}
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break;
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case GL_RGB:
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if (table->Size == 256) {
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for (i = 0; i < n; i++) {
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rgba[i][RCOMP] = lut[rgba[i][RCOMP] * 3 + 0];
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rgba[i][GCOMP] = lut[rgba[i][GCOMP] * 3 + 1];
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rgba[i][BCOMP] = lut[rgba[i][BCOMP] * 3 + 2];
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}
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}
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else {
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for (i = 0; i < n; i++) {
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GLint jR = IROUND((GLfloat) rgba[i][RCOMP] * scale);
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GLint jG = IROUND((GLfloat) rgba[i][GCOMP] * scale);
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GLint jB = IROUND((GLfloat) rgba[i][BCOMP] * scale);
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rgba[i][RCOMP] = lut[jR * 3 + 0];
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rgba[i][GCOMP] = lut[jG * 3 + 1];
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rgba[i][BCOMP] = lut[jB * 3 + 2];
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}
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}
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break;
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case GL_RGBA:
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if (table->Size == 256) {
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for (i = 0; i < n; i++) {
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rgba[i][RCOMP] = lut[rgba[i][RCOMP] * 4 + 0];
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rgba[i][GCOMP] = lut[rgba[i][GCOMP] * 4 + 1];
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rgba[i][BCOMP] = lut[rgba[i][BCOMP] * 4 + 2];
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rgba[i][ACOMP] = lut[rgba[i][ACOMP] * 4 + 3];
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}
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}
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else {
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for (i = 0; i < n; i++) {
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GLint jR = IROUND((GLfloat) rgba[i][RCOMP] * scale);
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GLint jG = IROUND((GLfloat) rgba[i][GCOMP] * scale);
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GLint jB = IROUND((GLfloat) rgba[i][BCOMP] * scale);
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GLint jA = IROUND((GLfloat) rgba[i][ACOMP] * scale);
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CLAMPED_FLOAT_TO_CHAN(rgba[i][RCOMP], lut[jR * 4 + 0]);
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CLAMPED_FLOAT_TO_CHAN(rgba[i][GCOMP], lut[jG * 4 + 1]);
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CLAMPED_FLOAT_TO_CHAN(rgba[i][BCOMP], lut[jB * 4 + 2]);
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CLAMPED_FLOAT_TO_CHAN(rgba[i][ACOMP], lut[jA * 4 + 3]);
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}
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}
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break;
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default:
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_mesa_problem(NULL, "Bad format in _mesa_lookup_rgba_chan");
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return;
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}
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}
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/*
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* Map color indexes to float rgba values.
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*/
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void
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_mesa_map_ci_to_rgba( const GLcontext *ctx, GLuint n,
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const GLuint index[], GLfloat rgba[][4] )
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{
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GLuint rmask = ctx->PixelMaps.ItoR.Size - 1;
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GLuint gmask = ctx->PixelMaps.ItoG.Size - 1;
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GLuint bmask = ctx->PixelMaps.ItoB.Size - 1;
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GLuint amask = ctx->PixelMaps.ItoA.Size - 1;
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const GLfloat *rMap = ctx->PixelMaps.ItoR.Map;
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const GLfloat *gMap = ctx->PixelMaps.ItoG.Map;
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const GLfloat *bMap = ctx->PixelMaps.ItoB.Map;
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const GLfloat *aMap = ctx->PixelMaps.ItoA.Map;
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GLuint i;
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for (i=0;i<n;i++) {
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rgba[i][RCOMP] = rMap[index[i] & rmask];
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rgba[i][GCOMP] = gMap[index[i] & gmask];
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rgba[i][BCOMP] = bMap[index[i] & bmask];
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rgba[i][ACOMP] = aMap[index[i] & amask];
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}
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}
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/**
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* Map ubyte color indexes to ubyte/RGBA values.
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*/
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void
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_mesa_map_ci8_to_rgba8(const GLcontext *ctx, GLuint n, const GLubyte index[],
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GLubyte rgba[][4])
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{
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GLuint rmask = ctx->PixelMaps.ItoR.Size - 1;
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GLuint gmask = ctx->PixelMaps.ItoG.Size - 1;
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GLuint bmask = ctx->PixelMaps.ItoB.Size - 1;
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GLuint amask = ctx->PixelMaps.ItoA.Size - 1;
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const GLubyte *rMap = ctx->PixelMaps.ItoR.Map8;
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const GLubyte *gMap = ctx->PixelMaps.ItoG.Map8;
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const GLubyte *bMap = ctx->PixelMaps.ItoB.Map8;
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const GLubyte *aMap = ctx->PixelMaps.ItoA.Map8;
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GLuint i;
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for (i=0;i<n;i++) {
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rgba[i][RCOMP] = rMap[index[i] & rmask];
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rgba[i][GCOMP] = gMap[index[i] & gmask];
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rgba[i][BCOMP] = bMap[index[i] & bmask];
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rgba[i][ACOMP] = aMap[index[i] & amask];
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}
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}
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void
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_mesa_scale_and_bias_depth(const GLcontext *ctx, GLuint n,
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GLfloat depthValues[])
|
||||
{
|
||||
const GLfloat scale = ctx->Pixel.DepthScale;
|
||||
const GLfloat bias = ctx->Pixel.DepthBias;
|
||||
GLuint i;
|
||||
for (i = 0; i < n; i++) {
|
||||
GLfloat d = depthValues[i] * scale + bias;
|
||||
depthValues[i] = CLAMP(d, 0.0F, 1.0F);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
_mesa_scale_and_bias_depth_uint(const GLcontext *ctx, GLuint n,
|
||||
GLuint depthValues[])
|
||||
{
|
||||
const GLdouble max = (double) 0xffffffff;
|
||||
const GLdouble scale = ctx->Pixel.DepthScale;
|
||||
const GLdouble bias = ctx->Pixel.DepthBias * max;
|
||||
GLuint i;
|
||||
for (i = 0; i < n; i++) {
|
||||
GLdouble d = (GLdouble) depthValues[i] * scale + bias;
|
||||
d = CLAMP(d, 0.0, max);
|
||||
depthValues[i] = (GLuint) d;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Apply various pixel transfer operations to an array of RGBA pixels
|
||||
* as indicated by the transferOps bitmask
|
||||
|
||||
@@ -2,7 +2,7 @@
|
||||
* Mesa 3-D graphics library
|
||||
* Version: 7.1
|
||||
*
|
||||
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
|
||||
* Copyright (C) 1999-2008 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"),
|
||||
@@ -111,6 +111,51 @@ _mesa_pack_bitmap( GLint width, GLint height, const GLubyte *source,
|
||||
GLubyte *dest, const struct gl_pixelstore_attrib *packing );
|
||||
|
||||
|
||||
/** \name Pixel processing functions */
|
||||
/*@{*/
|
||||
|
||||
extern void
|
||||
_mesa_scale_and_bias_rgba(GLuint n, GLfloat rgba[][4],
|
||||
GLfloat rScale, GLfloat gScale,
|
||||
GLfloat bScale, GLfloat aScale,
|
||||
GLfloat rBias, GLfloat gBias,
|
||||
GLfloat bBias, GLfloat aBias);
|
||||
|
||||
extern void
|
||||
_mesa_map_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4]);
|
||||
|
||||
|
||||
extern void
|
||||
_mesa_transform_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4]);
|
||||
|
||||
|
||||
extern void
|
||||
_mesa_lookup_rgba_float(const struct gl_color_table *table,
|
||||
GLuint n, GLfloat rgba[][4]);
|
||||
|
||||
extern void
|
||||
_mesa_lookup_rgba_ubyte(const struct gl_color_table *table,
|
||||
GLuint n, GLubyte rgba[][4]);
|
||||
|
||||
|
||||
extern void
|
||||
_mesa_map_ci_to_rgba(const GLcontext *ctx,
|
||||
GLuint n, const GLuint index[], GLfloat rgba[][4]);
|
||||
|
||||
|
||||
extern void
|
||||
_mesa_map_ci8_to_rgba8(const GLcontext *ctx, GLuint n, const GLubyte index[],
|
||||
GLubyte rgba[][4]);
|
||||
|
||||
|
||||
extern void
|
||||
_mesa_scale_and_bias_depth(const GLcontext *ctx, GLuint n,
|
||||
GLfloat depthValues[]);
|
||||
|
||||
extern void
|
||||
_mesa_scale_and_bias_depth_uint(const GLcontext *ctx, GLuint n,
|
||||
GLuint depthValues[]);
|
||||
|
||||
extern void
|
||||
_mesa_apply_rgba_transfer_ops(GLcontext *ctx, GLbitfield transferOps,
|
||||
GLuint n, GLfloat rgba[][4]);
|
||||
|
||||
@@ -1,8 +1,8 @@
|
||||
/*
|
||||
* Mesa 3-D graphics library
|
||||
* Version: 6.5.3
|
||||
* Version: 7.1
|
||||
*
|
||||
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
|
||||
* Copyright (C) 1999-2008 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"),
|
||||
@@ -22,6 +22,12 @@
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
|
||||
/**
|
||||
* \file pixel.c
|
||||
* Pixel transfer functions (glPixelZoom, glPixelMap, glPixelTransfer)
|
||||
*/
|
||||
|
||||
#include "glheader.h"
|
||||
#include "bufferobj.h"
|
||||
#include "colormac.h"
|
||||
@@ -741,411 +747,6 @@ _mesa_PixelTransferi( GLenum pname, GLint param )
|
||||
|
||||
|
||||
|
||||
/**********************************************************************/
|
||||
/***** Pixel processing functions ******/
|
||||
/**********************************************************************/
|
||||
|
||||
/*
|
||||
* Apply scale and bias factors to an array of RGBA pixels.
|
||||
*/
|
||||
void
|
||||
_mesa_scale_and_bias_rgba(GLuint n, GLfloat rgba[][4],
|
||||
GLfloat rScale, GLfloat gScale,
|
||||
GLfloat bScale, GLfloat aScale,
|
||||
GLfloat rBias, GLfloat gBias,
|
||||
GLfloat bBias, GLfloat aBias)
|
||||
{
|
||||
if (rScale != 1.0 || rBias != 0.0) {
|
||||
GLuint i;
|
||||
for (i = 0; i < n; i++) {
|
||||
rgba[i][RCOMP] = rgba[i][RCOMP] * rScale + rBias;
|
||||
}
|
||||
}
|
||||
if (gScale != 1.0 || gBias != 0.0) {
|
||||
GLuint i;
|
||||
for (i = 0; i < n; i++) {
|
||||
rgba[i][GCOMP] = rgba[i][GCOMP] * gScale + gBias;
|
||||
}
|
||||
}
|
||||
if (bScale != 1.0 || bBias != 0.0) {
|
||||
GLuint i;
|
||||
for (i = 0; i < n; i++) {
|
||||
rgba[i][BCOMP] = rgba[i][BCOMP] * bScale + bBias;
|
||||
}
|
||||
}
|
||||
if (aScale != 1.0 || aBias != 0.0) {
|
||||
GLuint i;
|
||||
for (i = 0; i < n; i++) {
|
||||
rgba[i][ACOMP] = rgba[i][ACOMP] * aScale + aBias;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Apply pixel mapping to an array of floating point RGBA pixels.
|
||||
*/
|
||||
void
|
||||
_mesa_map_rgba( const GLcontext *ctx, GLuint n, GLfloat rgba[][4] )
|
||||
{
|
||||
const GLfloat rscale = (GLfloat) (ctx->PixelMaps.RtoR.Size - 1);
|
||||
const GLfloat gscale = (GLfloat) (ctx->PixelMaps.GtoG.Size - 1);
|
||||
const GLfloat bscale = (GLfloat) (ctx->PixelMaps.BtoB.Size - 1);
|
||||
const GLfloat ascale = (GLfloat) (ctx->PixelMaps.AtoA.Size - 1);
|
||||
const GLfloat *rMap = ctx->PixelMaps.RtoR.Map;
|
||||
const GLfloat *gMap = ctx->PixelMaps.GtoG.Map;
|
||||
const GLfloat *bMap = ctx->PixelMaps.BtoB.Map;
|
||||
const GLfloat *aMap = ctx->PixelMaps.AtoA.Map;
|
||||
GLuint i;
|
||||
for (i=0;i<n;i++) {
|
||||
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)];
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Apply the color matrix and post color matrix scaling and biasing.
|
||||
*/
|
||||
void
|
||||
_mesa_transform_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4])
|
||||
{
|
||||
const GLfloat rs = ctx->Pixel.PostColorMatrixScale[0];
|
||||
const GLfloat rb = ctx->Pixel.PostColorMatrixBias[0];
|
||||
const GLfloat gs = ctx->Pixel.PostColorMatrixScale[1];
|
||||
const GLfloat gb = ctx->Pixel.PostColorMatrixBias[1];
|
||||
const GLfloat bs = ctx->Pixel.PostColorMatrixScale[2];
|
||||
const GLfloat bb = ctx->Pixel.PostColorMatrixBias[2];
|
||||
const GLfloat as = ctx->Pixel.PostColorMatrixScale[3];
|
||||
const GLfloat ab = ctx->Pixel.PostColorMatrixBias[3];
|
||||
const GLfloat *m = ctx->ColorMatrixStack.Top->m;
|
||||
GLuint i;
|
||||
for (i = 0; i < n; i++) {
|
||||
const GLfloat r = rgba[i][RCOMP];
|
||||
const GLfloat g = rgba[i][GCOMP];
|
||||
const GLfloat b = rgba[i][BCOMP];
|
||||
const GLfloat a = rgba[i][ACOMP];
|
||||
rgba[i][RCOMP] = (m[0] * r + m[4] * g + m[ 8] * b + m[12] * a) * rs + rb;
|
||||
rgba[i][GCOMP] = (m[1] * r + m[5] * g + m[ 9] * b + m[13] * a) * gs + gb;
|
||||
rgba[i][BCOMP] = (m[2] * r + m[6] * g + m[10] * b + m[14] * a) * bs + bb;
|
||||
rgba[i][ACOMP] = (m[3] * r + m[7] * g + m[11] * b + m[15] * a) * as + ab;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Apply a color table lookup to an array of floating point RGBA colors.
|
||||
*/
|
||||
void
|
||||
_mesa_lookup_rgba_float(const struct gl_color_table *table,
|
||||
GLuint n, GLfloat rgba[][4])
|
||||
{
|
||||
const GLint max = table->Size - 1;
|
||||
const GLfloat scale = (GLfloat) max;
|
||||
const GLfloat *lut = table->TableF;
|
||||
GLuint i;
|
||||
|
||||
if (!table->TableF || table->Size == 0)
|
||||
return;
|
||||
|
||||
switch (table->_BaseFormat) {
|
||||
case GL_INTENSITY:
|
||||
/* replace RGBA with I */
|
||||
for (i = 0; i < n; i++) {
|
||||
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;
|
||||
}
|
||||
break;
|
||||
case GL_LUMINANCE:
|
||||
/* replace RGB with L */
|
||||
for (i = 0; i < n; i++) {
|
||||
GLint j = IROUND(rgba[i][RCOMP] * scale);
|
||||
GLfloat c = lut[CLAMP(j, 0, max)];
|
||||
rgba[i][RCOMP] =
|
||||
rgba[i][GCOMP] =
|
||||
rgba[i][BCOMP] = c;
|
||||
}
|
||||
break;
|
||||
case GL_ALPHA:
|
||||
/* replace A with A */
|
||||
for (i = 0; i < n; i++) {
|
||||
GLint j = IROUND(rgba[i][ACOMP] * scale);
|
||||
rgba[i][ACOMP] = lut[CLAMP(j, 0, max)];
|
||||
}
|
||||
break;
|
||||
case GL_LUMINANCE_ALPHA:
|
||||
/* replace RGBA with LLLA */
|
||||
for (i = 0; i < n; i++) {
|
||||
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;;
|
||||
}
|
||||
break;
|
||||
case GL_RGB:
|
||||
/* replace RGB with RGB */
|
||||
for (i = 0; i < n; i++) {
|
||||
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];
|
||||
}
|
||||
break;
|
||||
case GL_RGBA:
|
||||
/* replace RGBA with RGBA */
|
||||
for (i = 0; i < n; i++) {
|
||||
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];
|
||||
rgba[i][ACOMP] = lut[jA * 4 + 3];
|
||||
}
|
||||
break;
|
||||
default:
|
||||
_mesa_problem(NULL, "Bad format in _mesa_lookup_rgba_float");
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Apply a color table lookup to an array of ubyte/RGBA colors.
|
||||
*/
|
||||
void
|
||||
_mesa_lookup_rgba_ubyte(const struct gl_color_table *table,
|
||||
GLuint n, GLubyte rgba[][4])
|
||||
{
|
||||
const GLubyte *lut = table->TableUB;
|
||||
const GLfloat scale = (GLfloat) (table->Size - 1) / 255.0;
|
||||
GLuint i;
|
||||
|
||||
if (!table->TableUB || table->Size == 0)
|
||||
return;
|
||||
|
||||
switch (table->_BaseFormat) {
|
||||
case GL_INTENSITY:
|
||||
/* replace RGBA with I */
|
||||
if (table->Size == 256) {
|
||||
for (i = 0; i < n; i++) {
|
||||
const GLubyte c = lut[rgba[i][RCOMP]];
|
||||
rgba[i][RCOMP] =
|
||||
rgba[i][GCOMP] =
|
||||
rgba[i][BCOMP] =
|
||||
rgba[i][ACOMP] = c;
|
||||
}
|
||||
}
|
||||
else {
|
||||
for (i = 0; i < n; i++) {
|
||||
GLint j = IROUND((GLfloat) rgba[i][RCOMP] * scale);
|
||||
rgba[i][RCOMP] =
|
||||
rgba[i][GCOMP] =
|
||||
rgba[i][BCOMP] =
|
||||
rgba[i][ACOMP] = lut[j];
|
||||
}
|
||||
}
|
||||
break;
|
||||
case GL_LUMINANCE:
|
||||
/* replace RGB with L */
|
||||
if (table->Size == 256) {
|
||||
for (i = 0; i < n; i++) {
|
||||
const GLubyte c = lut[rgba[i][RCOMP]];
|
||||
rgba[i][RCOMP] =
|
||||
rgba[i][GCOMP] =
|
||||
rgba[i][BCOMP] = c;
|
||||
}
|
||||
}
|
||||
else {
|
||||
for (i = 0; i < n; i++) {
|
||||
GLint j = IROUND((GLfloat) rgba[i][RCOMP] * scale);
|
||||
rgba[i][RCOMP] =
|
||||
rgba[i][GCOMP] =
|
||||
rgba[i][BCOMP] = lut[j];
|
||||
}
|
||||
}
|
||||
break;
|
||||
case GL_ALPHA:
|
||||
/* replace A with A */
|
||||
if (table->Size == 256) {
|
||||
for (i = 0; i < n; i++) {
|
||||
rgba[i][ACOMP] = lut[rgba[i][ACOMP]];
|
||||
}
|
||||
}
|
||||
else {
|
||||
for (i = 0; i < n; i++) {
|
||||
GLint j = IROUND((GLfloat) rgba[i][ACOMP] * scale);
|
||||
rgba[i][ACOMP] = lut[j];
|
||||
}
|
||||
}
|
||||
break;
|
||||
case GL_LUMINANCE_ALPHA:
|
||||
/* replace RGBA with LLLA */
|
||||
if (table->Size == 256) {
|
||||
for (i = 0; i < n; i++) {
|
||||
GLubyte l = lut[rgba[i][RCOMP] * 2 + 0];
|
||||
GLubyte a = lut[rgba[i][ACOMP] * 2 + 1];;
|
||||
rgba[i][RCOMP] =
|
||||
rgba[i][GCOMP] =
|
||||
rgba[i][BCOMP] = l;
|
||||
rgba[i][ACOMP] = a;
|
||||
}
|
||||
}
|
||||
else {
|
||||
for (i = 0; i < n; i++) {
|
||||
GLint jL = IROUND((GLfloat) rgba[i][RCOMP] * scale);
|
||||
GLint jA = IROUND((GLfloat) rgba[i][ACOMP] * scale);
|
||||
GLubyte luminance = lut[jL * 2 + 0];
|
||||
GLubyte alpha = lut[jA * 2 + 1];
|
||||
rgba[i][RCOMP] =
|
||||
rgba[i][GCOMP] =
|
||||
rgba[i][BCOMP] = luminance;
|
||||
rgba[i][ACOMP] = alpha;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case GL_RGB:
|
||||
if (table->Size == 256) {
|
||||
for (i = 0; i < n; i++) {
|
||||
rgba[i][RCOMP] = lut[rgba[i][RCOMP] * 3 + 0];
|
||||
rgba[i][GCOMP] = lut[rgba[i][GCOMP] * 3 + 1];
|
||||
rgba[i][BCOMP] = lut[rgba[i][BCOMP] * 3 + 2];
|
||||
}
|
||||
}
|
||||
else {
|
||||
for (i = 0; i < n; i++) {
|
||||
GLint jR = IROUND((GLfloat) rgba[i][RCOMP] * scale);
|
||||
GLint jG = IROUND((GLfloat) rgba[i][GCOMP] * scale);
|
||||
GLint jB = IROUND((GLfloat) rgba[i][BCOMP] * scale);
|
||||
rgba[i][RCOMP] = lut[jR * 3 + 0];
|
||||
rgba[i][GCOMP] = lut[jG * 3 + 1];
|
||||
rgba[i][BCOMP] = lut[jB * 3 + 2];
|
||||
}
|
||||
}
|
||||
break;
|
||||
case GL_RGBA:
|
||||
if (table->Size == 256) {
|
||||
for (i = 0; i < n; i++) {
|
||||
rgba[i][RCOMP] = lut[rgba[i][RCOMP] * 4 + 0];
|
||||
rgba[i][GCOMP] = lut[rgba[i][GCOMP] * 4 + 1];
|
||||
rgba[i][BCOMP] = lut[rgba[i][BCOMP] * 4 + 2];
|
||||
rgba[i][ACOMP] = lut[rgba[i][ACOMP] * 4 + 3];
|
||||
}
|
||||
}
|
||||
else {
|
||||
for (i = 0; i < n; i++) {
|
||||
GLint jR = IROUND((GLfloat) rgba[i][RCOMP] * scale);
|
||||
GLint jG = IROUND((GLfloat) rgba[i][GCOMP] * scale);
|
||||
GLint jB = IROUND((GLfloat) rgba[i][BCOMP] * scale);
|
||||
GLint jA = IROUND((GLfloat) rgba[i][ACOMP] * scale);
|
||||
CLAMPED_FLOAT_TO_CHAN(rgba[i][RCOMP], lut[jR * 4 + 0]);
|
||||
CLAMPED_FLOAT_TO_CHAN(rgba[i][GCOMP], lut[jG * 4 + 1]);
|
||||
CLAMPED_FLOAT_TO_CHAN(rgba[i][BCOMP], lut[jB * 4 + 2]);
|
||||
CLAMPED_FLOAT_TO_CHAN(rgba[i][ACOMP], lut[jA * 4 + 3]);
|
||||
}
|
||||
}
|
||||
break;
|
||||
default:
|
||||
_mesa_problem(NULL, "Bad format in _mesa_lookup_rgba_chan");
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
* Map color indexes to float rgba values.
|
||||
*/
|
||||
void
|
||||
_mesa_map_ci_to_rgba( const GLcontext *ctx, GLuint n,
|
||||
const GLuint index[], GLfloat rgba[][4] )
|
||||
{
|
||||
GLuint rmask = ctx->PixelMaps.ItoR.Size - 1;
|
||||
GLuint gmask = ctx->PixelMaps.ItoG.Size - 1;
|
||||
GLuint bmask = ctx->PixelMaps.ItoB.Size - 1;
|
||||
GLuint amask = ctx->PixelMaps.ItoA.Size - 1;
|
||||
const GLfloat *rMap = ctx->PixelMaps.ItoR.Map;
|
||||
const GLfloat *gMap = ctx->PixelMaps.ItoG.Map;
|
||||
const GLfloat *bMap = ctx->PixelMaps.ItoB.Map;
|
||||
const GLfloat *aMap = ctx->PixelMaps.ItoA.Map;
|
||||
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];
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Map ubyte color indexes to ubyte/RGBA values.
|
||||
*/
|
||||
void
|
||||
_mesa_map_ci8_to_rgba8(const GLcontext *ctx, GLuint n, const GLubyte index[],
|
||||
GLubyte rgba[][4])
|
||||
{
|
||||
GLuint rmask = ctx->PixelMaps.ItoR.Size - 1;
|
||||
GLuint gmask = ctx->PixelMaps.ItoG.Size - 1;
|
||||
GLuint bmask = ctx->PixelMaps.ItoB.Size - 1;
|
||||
GLuint amask = ctx->PixelMaps.ItoA.Size - 1;
|
||||
const GLubyte *rMap = ctx->PixelMaps.ItoR.Map8;
|
||||
const GLubyte *gMap = ctx->PixelMaps.ItoG.Map8;
|
||||
const GLubyte *bMap = ctx->PixelMaps.ItoB.Map8;
|
||||
const GLubyte *aMap = ctx->PixelMaps.ItoA.Map8;
|
||||
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
|
||||
_mesa_scale_and_bias_depth(const GLcontext *ctx, GLuint n,
|
||||
GLfloat depthValues[])
|
||||
{
|
||||
const GLfloat scale = ctx->Pixel.DepthScale;
|
||||
const GLfloat bias = ctx->Pixel.DepthBias;
|
||||
GLuint i;
|
||||
for (i = 0; i < n; i++) {
|
||||
GLfloat d = depthValues[i] * scale + bias;
|
||||
depthValues[i] = CLAMP(d, 0.0F, 1.0F);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**********************************************************************/
|
||||
/***** State Management *****/
|
||||
/**********************************************************************/
|
||||
@@ -1217,6 +818,9 @@ update_image_transfer_state(GLcontext *ctx)
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Update meas pixel transfer derived state.
|
||||
*/
|
||||
void _mesa_update_pixel( GLcontext *ctx, GLuint new_state )
|
||||
{
|
||||
if (new_state & _NEW_COLOR_MATRIX)
|
||||
|
||||
@@ -1,13 +1,8 @@
|
||||
/**
|
||||
* \file pixel.h
|
||||
* Pixel operations.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Mesa 3-D graphics library
|
||||
* Version: 6.5.2
|
||||
* Version: 7.1
|
||||
*
|
||||
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
|
||||
* Copyright (C) 1999-2008 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"),
|
||||
@@ -28,6 +23,12 @@
|
||||
*/
|
||||
|
||||
|
||||
/**
|
||||
* \file pixel.h
|
||||
* Pixel operations.
|
||||
*/
|
||||
|
||||
|
||||
#ifndef PIXEL_H
|
||||
#define PIXEL_H
|
||||
|
||||
|
||||
Reference in New Issue
Block a user