xserver and mesa git update 28-12-2010

1 files changed, 566 insertions, 0 deletions

diff --git a/mesalib/src/mesa/main/pixeltransfer.c b/mesalib/src/mesa/main/pixeltransfer.c
new file mode 100644
index 000000000..67173ce3e
--- /dev/null
+++ b/mesalib/src/mesa/main/pixeltransfer.c
@@ -0,0 +1,566 @@
+/*

+ * Mesa 3-D graphics library

+ *

+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

+ * Copyright (C) 2009-2010  VMware, Inc.  All Rights Reserved.

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice shall be included

+ * in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

+ * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

+ */

+

+

+/**

+ * \file pixeltransfer.c

+ * Pixel transfer operations (scale, bias, table lookups, etc)

+ */

+

+

+#include "glheader.h"

+#include "colormac.h"

+#include "pixeltransfer.h"

+#include "imports.h"

+

+

+/*

+ * 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 struct gl_context *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 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_RED:

+         /* replace RGB with RGB */

+         for (i = 0; i < n; i++) {

+            GLint jR = IROUND(rgba[i][RCOMP] * scale);

+            jR = CLAMP(jR, 0, max);

+            rgba[i][RCOMP] = lut[jR * 3 + 0];

+         }

+         break;

+      case GL_RG:

+         /* replace RG with RG */

+         for (i = 0; i < n; i++) {

+            GLint jR = IROUND(rgba[i][RCOMP] * scale);

+            GLint jG = IROUND(rgba[i][GCOMP] * scale);

+            jR = CLAMP(jR, 0, max);

+            jG = CLAMP(jG, 0, max);

+            rgba[i][RCOMP] = lut[jR * 3 + 0];

+            rgba[i][GCOMP] = lut[jG * 3 + 1];

+         }

+         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 struct gl_context *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 struct gl_context *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 struct gl_context *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 struct gl_context *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

+ */

+void

+_mesa_apply_rgba_transfer_ops(struct gl_context *ctx, GLbitfield transferOps,

+                              GLuint n, GLfloat rgba[][4])

+{

+   /* scale & bias */

+   if (transferOps & IMAGE_SCALE_BIAS_BIT) {

+      _mesa_scale_and_bias_rgba(n, rgba,

+                                ctx->Pixel.RedScale, ctx->Pixel.GreenScale,

+                                ctx->Pixel.BlueScale, ctx->Pixel.AlphaScale,

+                                ctx->Pixel.RedBias, ctx->Pixel.GreenBias,

+                                ctx->Pixel.BlueBias, ctx->Pixel.AlphaBias);

+   }

+   /* color map lookup */

+   if (transferOps & IMAGE_MAP_COLOR_BIT) {

+      _mesa_map_rgba( ctx, n, rgba );

+   }

+

+   /* clamping to [0,1] */

+   if (transferOps & IMAGE_CLAMP_BIT) {

+      GLuint i;

+      for (i = 0; i < n; i++) {

+         rgba[i][RCOMP] = CLAMP(rgba[i][RCOMP], 0.0F, 1.0F);

+         rgba[i][GCOMP] = CLAMP(rgba[i][GCOMP], 0.0F, 1.0F);

+         rgba[i][BCOMP] = CLAMP(rgba[i][BCOMP], 0.0F, 1.0F);

+         rgba[i][ACOMP] = CLAMP(rgba[i][ACOMP], 0.0F, 1.0F);

+      }

+   }

+}

+

+

+/*

+ * Apply color index shift and offset to an array of pixels.

+ */

+void

+_mesa_shift_and_offset_ci(const struct gl_context *ctx,

+                          GLuint n, GLuint indexes[])

+{

+   GLint shift = ctx->Pixel.IndexShift;

+   GLint offset = ctx->Pixel.IndexOffset;

+   GLuint i;

+   if (shift > 0) {

+      for (i=0;i<n;i++) {

+         indexes[i] = (indexes[i] << shift) + offset;

+      }

+   }

+   else if (shift < 0) {

+      shift = -shift;

+      for (i=0;i<n;i++) {

+         indexes[i] = (indexes[i] >> shift) + offset;

+      }

+   }

+   else {

+      for (i=0;i<n;i++) {

+         indexes[i] = indexes[i] + offset;

+      }

+   }

+}

+

+

+

+/**

+ * Apply color index shift, offset and table lookup to an array

+ * of color indexes;

+ */

+void

+_mesa_apply_ci_transfer_ops(const struct gl_context *ctx,

+                            GLbitfield transferOps,

+                            GLuint n, GLuint indexes[])

+{

+   if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {

+      _mesa_shift_and_offset_ci(ctx, n, indexes);

+   }

+   if (transferOps & IMAGE_MAP_COLOR_BIT) {

+      const GLuint mask = ctx->PixelMaps.ItoI.Size - 1;

+      GLuint i;

+      for (i = 0; i < n; i++) {

+         const GLuint j = indexes[i] & mask;

+         indexes[i] = IROUND(ctx->PixelMaps.ItoI.Map[j]);

+      }

+   }

+}

+

+

+/**

+ * Apply stencil index shift, offset and table lookup to an array

+ * of stencil values.

+ */

+void

+_mesa_apply_stencil_transfer_ops(const struct gl_context *ctx, GLuint n,

+                                 GLstencil stencil[])

+{

+   if (ctx->Pixel.IndexShift != 0 || ctx->Pixel.IndexOffset != 0) {

+      const GLint offset = ctx->Pixel.IndexOffset;

+      GLint shift = ctx->Pixel.IndexShift;

+      GLuint i;

+      if (shift > 0) {

+         for (i = 0; i < n; i++) {

+            stencil[i] = (stencil[i] << shift) + offset;

+         }

+      }

+      else if (shift < 0) {

+         shift = -shift;

+         for (i = 0; i < n; i++) {

+            stencil[i] = (stencil[i] >> shift) + offset;

+         }

+      }

+      else {

+         for (i = 0; i < n; i++) {

+            stencil[i] = stencil[i] + offset;

+         }

+      }

+   }

+   if (ctx->Pixel.MapStencilFlag) {

+      GLuint mask = ctx->PixelMaps.StoS.Size - 1;

+      GLuint i;

+      for (i = 0; i < n; i++) {

+         stencil[i] = (GLstencil)ctx->PixelMaps.StoS.Map[ stencil[i] & mask ];

+      }

+   }

+}