1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Mesa 3-D graphics library 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright (C) 2009-2010 VMware, Inc. All Rights Reserved. 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Permission is hereby granted, free of charge, to any person obtaining a 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * copy of this software and associated documentation files (the "Software"), 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * to deal in the Software without restriction, including without limitation 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * and/or sell copies of the Software, and to permit persons to whom the 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Software is furnished to do so, subject to the following conditions: 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The above copyright notice and this permission notice shall be included 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * in all copies or substantial portions of the Software. 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * \file pixeltransfer.c 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Pixel transfer operations (scale, bias, table lookups, etc) 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "glheader.h" 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "colormac.h" 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "pixeltransfer.h" 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "imports.h" 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "mtypes.h" 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Apply scale and bias factors to an array of RGBA pixels. 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_mesa_scale_and_bias_rgba(GLuint n, GLfloat rgba[][4], 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat rScale, GLfloat gScale, 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat bScale, GLfloat aScale, 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat rBias, GLfloat gBias, 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat bBias, GLfloat aBias) 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (rScale != 1.0 || rBias != 0.0) { 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < n; i++) { 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][RCOMP] = rgba[i][RCOMP] * rScale + rBias; 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (gScale != 1.0 || gBias != 0.0) { 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < n; i++) { 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][GCOMP] = rgba[i][GCOMP] * gScale + gBias; 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (bScale != 1.0 || bBias != 0.0) { 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < n; i++) { 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][BCOMP] = rgba[i][BCOMP] * bScale + bBias; 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (aScale != 1.0 || aBias != 0.0) { 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < n; i++) { 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][ACOMP] = rgba[i][ACOMP] * aScale + aBias; 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 75f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 76f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 77f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Apply pixel mapping to an array of floating point RGBA pixels. 78f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 79f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 80f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_mesa_map_rgba( const struct gl_context *ctx, GLuint n, GLfloat rgba[][4] ) 81f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 82f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat rscale = (GLfloat) (ctx->PixelMaps.RtoR.Size - 1); 83f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat gscale = (GLfloat) (ctx->PixelMaps.GtoG.Size - 1); 84f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat bscale = (GLfloat) (ctx->PixelMaps.BtoB.Size - 1); 85f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat ascale = (GLfloat) (ctx->PixelMaps.AtoA.Size - 1); 86f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat *rMap = ctx->PixelMaps.RtoR.Map; 87f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat *gMap = ctx->PixelMaps.GtoG.Map; 88f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat *bMap = ctx->PixelMaps.BtoB.Map; 89f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat *aMap = ctx->PixelMaps.AtoA.Map; 90f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 91f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i=0;i<n;i++) { 92f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat r = CLAMP(rgba[i][RCOMP], 0.0F, 1.0F); 93f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat g = CLAMP(rgba[i][GCOMP], 0.0F, 1.0F); 94f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat b = CLAMP(rgba[i][BCOMP], 0.0F, 1.0F); 95f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat a = CLAMP(rgba[i][ACOMP], 0.0F, 1.0F); 96f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][RCOMP] = rMap[F_TO_I(r * rscale)]; 97f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][GCOMP] = gMap[F_TO_I(g * gscale)]; 98f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][BCOMP] = bMap[F_TO_I(b * bscale)]; 99f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][ACOMP] = aMap[F_TO_I(a * ascale)]; 100f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 101f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 102f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 103f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 104f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Map color indexes to float rgba values. 105f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 106f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 107f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_mesa_map_ci_to_rgba( const struct gl_context *ctx, GLuint n, 108f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLuint index[], GLfloat rgba[][4] ) 109f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 110f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint rmask = ctx->PixelMaps.ItoR.Size - 1; 111f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint gmask = ctx->PixelMaps.ItoG.Size - 1; 112f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint bmask = ctx->PixelMaps.ItoB.Size - 1; 113f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint amask = ctx->PixelMaps.ItoA.Size - 1; 114f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat *rMap = ctx->PixelMaps.ItoR.Map; 115f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat *gMap = ctx->PixelMaps.ItoG.Map; 116f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat *bMap = ctx->PixelMaps.ItoB.Map; 117f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat *aMap = ctx->PixelMaps.ItoA.Map; 118f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 119f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i=0;i<n;i++) { 120f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][RCOMP] = rMap[index[i] & rmask]; 121f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][GCOMP] = gMap[index[i] & gmask]; 122f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][BCOMP] = bMap[index[i] & bmask]; 123f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][ACOMP] = aMap[index[i] & amask]; 124f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 125f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 126f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 127f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 128f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 129f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_mesa_scale_and_bias_depth(const struct gl_context *ctx, GLuint n, 130f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat depthValues[]) 131f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 132f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat scale = ctx->Pixel.DepthScale; 133f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLfloat bias = ctx->Pixel.DepthBias; 134f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 135f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < n; i++) { 136f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat d = depthValues[i] * scale + bias; 137f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org depthValues[i] = CLAMP(d, 0.0F, 1.0F); 138f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 139f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 140f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 141f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 142f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 143f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_mesa_scale_and_bias_depth_uint(const struct gl_context *ctx, GLuint n, 144f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint depthValues[]) 145f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 146f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLdouble max = (double) 0xffffffff; 147f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLdouble scale = ctx->Pixel.DepthScale; 148f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLdouble bias = ctx->Pixel.DepthBias * max; 149f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 150f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < n; i++) { 151f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLdouble d = (GLdouble) depthValues[i] * scale + bias; 152f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org d = CLAMP(d, 0.0, max); 153f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org depthValues[i] = (GLuint) d; 154f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 155f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 156f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 157f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 158f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Apply various pixel transfer operations to an array of RGBA pixels 159f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * as indicated by the transferOps bitmask 160f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 161f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 162f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_mesa_apply_rgba_transfer_ops(struct gl_context *ctx, GLbitfield transferOps, 163f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint n, GLfloat rgba[][4]) 164f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 165f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* scale & bias */ 166f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (transferOps & IMAGE_SCALE_BIAS_BIT) { 167f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org _mesa_scale_and_bias_rgba(n, rgba, 168f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ctx->Pixel.RedScale, ctx->Pixel.GreenScale, 169f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ctx->Pixel.BlueScale, ctx->Pixel.AlphaScale, 170f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ctx->Pixel.RedBias, ctx->Pixel.GreenBias, 171f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ctx->Pixel.BlueBias, ctx->Pixel.AlphaBias); 172f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 173f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* color map lookup */ 174f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (transferOps & IMAGE_MAP_COLOR_BIT) { 175f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org _mesa_map_rgba( ctx, n, rgba ); 176f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 177f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 178f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* clamping to [0,1] */ 179f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (transferOps & IMAGE_CLAMP_BIT) { 180f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 181f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < n; i++) { 182f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][RCOMP] = CLAMP(rgba[i][RCOMP], 0.0F, 1.0F); 183f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][GCOMP] = CLAMP(rgba[i][GCOMP], 0.0F, 1.0F); 184f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][BCOMP] = CLAMP(rgba[i][BCOMP], 0.0F, 1.0F); 185f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgba[i][ACOMP] = CLAMP(rgba[i][ACOMP], 0.0F, 1.0F); 186f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 187f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 188f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 189f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 190f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 191f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 192f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Apply color index shift and offset to an array of pixels. 193f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 194f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 195f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_mesa_shift_and_offset_ci(const struct gl_context *ctx, 196f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint n, GLuint indexes[]) 197f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 198f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLint shift = ctx->Pixel.IndexShift; 199f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLint offset = ctx->Pixel.IndexOffset; 200f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 201f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (shift > 0) { 202f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i=0;i<n;i++) { 203f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org indexes[i] = (indexes[i] << shift) + offset; 204f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 205f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 206f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org else if (shift < 0) { 207f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org shift = -shift; 208f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i=0;i<n;i++) { 209f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org indexes[i] = (indexes[i] >> shift) + offset; 210f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 211f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 212f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org else { 213f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i=0;i<n;i++) { 214f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org indexes[i] = indexes[i] + offset; 215f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 216f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 217f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 218f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 219f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 220f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 221f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 222f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Apply color index shift, offset and table lookup to an array 223f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * of color indexes; 224f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 225f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 226f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_mesa_apply_ci_transfer_ops(const struct gl_context *ctx, 227f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLbitfield transferOps, 228f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint n, GLuint indexes[]) 229f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 230f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (transferOps & IMAGE_SHIFT_OFFSET_BIT) { 231f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org _mesa_shift_and_offset_ci(ctx, n, indexes); 232f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 233f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (transferOps & IMAGE_MAP_COLOR_BIT) { 234f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLuint mask = ctx->PixelMaps.ItoI.Size - 1; 235f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 236f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < n; i++) { 237f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLuint j = indexes[i] & mask; 238f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org indexes[i] = F_TO_I(ctx->PixelMaps.ItoI.Map[j]); 239f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 240f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 241f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 242f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 243f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 244f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 245f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Apply stencil index shift, offset and table lookup to an array 246f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * of stencil values. 247f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 248f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 249f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_mesa_apply_stencil_transfer_ops(const struct gl_context *ctx, GLuint n, 250f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLubyte stencil[]) 251f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 252f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->Pixel.IndexShift != 0 || ctx->Pixel.IndexOffset != 0) { 253f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const GLint offset = ctx->Pixel.IndexOffset; 254f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLint shift = ctx->Pixel.IndexShift; 255f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 256f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (shift > 0) { 257f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < n; i++) { 258f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org stencil[i] = (stencil[i] << shift) + offset; 259f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 260f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 261f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org else if (shift < 0) { 262f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org shift = -shift; 263f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < n; i++) { 264f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org stencil[i] = (stencil[i] >> shift) + offset; 265f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 266f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 267f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org else { 268f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < n; i++) { 269f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org stencil[i] = stencil[i] + offset; 270f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 271f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 272f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 273f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->Pixel.MapStencilFlag) { 274f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint mask = ctx->PixelMaps.StoS.Size - 1; 275f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint i; 276f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < n; i++) { 277f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org stencil[i] = (GLubyte) ctx->PixelMaps.StoS.Map[ stencil[i] & mask ]; 278f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 279f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 280f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 281