mesa: refactor: move pixel map/scale/bias code into image.c

pixel.c is just the API-related code now.

1 files changed, 11 insertions, 422 deletions

diff --git a/src/mesa/main/pixel.c b/src/mesa/main/pixel.c
index f14b225c1dc..c9c4289f699 100644
--- a/src/mesa/main/pixel.c
+++ b/src/mesa/main/pixel.c
@@ -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"
@@ -742,426 +748,6 @@ _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) / (GLfloat)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);
-   }
-}
-
-
-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;
-   }
-}
-
-
-/**********************************************************************/
 /*****                    State Management                        *****/
 /**********************************************************************/
 
@@ -1232,6 +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)