initial check-inglxmisc-1-0-0-branch

2 files changed, 273 insertions, 0 deletions

diff --git a/xc/extras/Mesa/src/pixeltex.c b/xc/extras/Mesa/src/pixeltex.c
new file mode 100644
index 000000000..a42869912
--- /dev/null
+++ b/xc/extras/Mesa/src/pixeltex.c
@@ -0,0 +1,204 @@
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.3
+ * 
+ * Copyright (C) 1999-2000  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"),
+ * 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
+ * BRIAN PAUL 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.
+ */
+
+
+/*
+ * This file implements both the GL_SGIX_pixel_texture and
+ * GL_SIGS_pixel_texture extensions. Luckily, they pretty much
+ * overlap in functionality so we use the same state variables
+ * and execution code for both.
+ */
+
+
+#ifdef PC_HEADER
+#include "all.h"
+#else
+#include "glheader.h"
+#include "context.h"
+#include "pixeltex.h"
+#endif
+
+
+void
+_mesa_PixelTexGenSGIX(GLenum mode)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPixelTexGenSGIX");
+
+   switch (mode) {
+      case GL_NONE:
+         ctx->Pixel.FragmentRgbSource = GL_PIXEL_GROUP_COLOR_SGIS;
+         ctx->Pixel.FragmentAlphaSource = GL_PIXEL_GROUP_COLOR_SGIS;
+         break;
+      case GL_ALPHA:
+         ctx->Pixel.FragmentRgbSource = GL_PIXEL_GROUP_COLOR_SGIS;
+         ctx->Pixel.FragmentAlphaSource = GL_CURRENT_RASTER_COLOR;
+         break;
+      case GL_RGB:
+         ctx->Pixel.FragmentRgbSource = GL_CURRENT_RASTER_COLOR;
+         ctx->Pixel.FragmentAlphaSource = GL_PIXEL_GROUP_COLOR_SGIS;
+         break;
+      case GL_RGBA:
+         ctx->Pixel.FragmentRgbSource = GL_CURRENT_RASTER_COLOR;
+         ctx->Pixel.FragmentAlphaSource = GL_CURRENT_RASTER_COLOR;
+         break;
+      default:
+         gl_error(ctx, GL_INVALID_ENUM, "glPixelTexGenSGIX(mode)");
+         return;
+   }
+}
+
+
+void
+_mesa_PixelTexGenParameterfSGIS(GLenum target, GLfloat value)
+{
+   _mesa_PixelTexGenParameteriSGIS(target, (GLint) value);
+}
+
+
+void
+_mesa_PixelTexGenParameterfvSGIS(GLenum target, const GLfloat *value)
+{
+   _mesa_PixelTexGenParameteriSGIS(target, (GLint) *value);
+}
+
+
+void
+_mesa_PixelTexGenParameteriSGIS(GLenum target, GLint value)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPixelTexGenParameterSGIS");
+
+   if (value != GL_CURRENT_RASTER_COLOR && value != GL_PIXEL_GROUP_COLOR_SGIS) {
+      gl_error(ctx, GL_INVALID_ENUM, "glPixelTexGenParameterSGIS(value)");
+      return;
+   }
+
+   if (target == GL_PIXEL_FRAGMENT_RGB_SOURCE_SGIS) {
+      ctx->Pixel.FragmentRgbSource = (GLenum) value;
+   }
+   else if (target == GL_PIXEL_FRAGMENT_ALPHA_SOURCE_SGIS) {
+      ctx->Pixel.FragmentAlphaSource = (GLenum) value;
+   }
+   else {
+      gl_error(ctx, GL_INVALID_ENUM, "glPixelTexGenParameterSGIS(target)");
+   }
+}
+
+
+void
+_mesa_PixelTexGenParameterivSGIS(GLenum target, const GLint *value)
+{
+  _mesa_PixelTexGenParameteriSGIS(target, *value);
+}
+
+
+void
+_mesa_GetPixelTexGenParameterfvSGIS(GLenum target, GLfloat *value)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glGetPixelTexGenParameterfvSGIS");
+
+   if (target == GL_PIXEL_FRAGMENT_RGB_SOURCE_SGIS) {
+      *value = (GLfloat) ctx->Pixel.FragmentRgbSource;
+   }
+   else if (target == GL_PIXEL_FRAGMENT_ALPHA_SOURCE_SGIS) {
+      *value = (GLfloat) ctx->Pixel.FragmentAlphaSource;
+   }
+   else {
+      gl_error(ctx, GL_INVALID_ENUM, "glGetPixelTexGenParameterfvSGIS(target)");
+   }
+}
+
+
+void
+_mesa_GetPixelTexGenParameterivSGIS(GLenum target, GLint *value)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glGetPixelTexGenParameterivSGIS");
+
+   if (target == GL_PIXEL_FRAGMENT_RGB_SOURCE_SGIS) {
+      *value = (GLint) ctx->Pixel.FragmentRgbSource;
+   }
+   else if (target == GL_PIXEL_FRAGMENT_ALPHA_SOURCE_SGIS) {
+      *value = (GLint) ctx->Pixel.FragmentAlphaSource;
+   }
+   else {
+      gl_error(ctx, GL_INVALID_ENUM, "glGetPixelTexGenParameterivSGIS(target)");
+   }
+}
+
+
+
+/*
+ * Convert RGBA values into strq texture coordinates.
+ */
+void
+_mesa_pixeltexgen(GLcontext *ctx, GLuint n, const GLubyte rgba[][4],
+                  GLfloat s[], GLfloat t[], GLfloat r[], GLfloat q[])
+{
+   static GLboolean firstCall = GL_TRUE;
+   static GLfloat byteToFloat[256];
+
+   if (firstCall) {
+      GLuint i;
+      for (i = 0; i < 256; i++) {
+         byteToFloat[i] = i / 255.0F;
+      }
+      firstCall = GL_FALSE;
+   }
+
+   if (ctx->Pixel.FragmentRgbSource == GL_CURRENT_RASTER_COLOR) {
+      GLuint i;
+      for (i = 0; i < n; i++) {
+         s[i] = ctx->Current.RasterColor[RCOMP];
+         t[i] = ctx->Current.RasterColor[GCOMP];
+         r[i] = ctx->Current.RasterColor[BCOMP];
+      }
+   }
+   else {
+      GLuint i;
+      ASSERT(ctx->Pixel.FragmentRgbSource == GL_PIXEL_GROUP_COLOR_SGIS);
+      for (i = 0; i < n; i++) {
+         s[i] = byteToFloat[rgba[i][RCOMP]];
+         t[i] = byteToFloat[rgba[i][GCOMP]];
+         r[i] = byteToFloat[rgba[i][BCOMP]];
+      }
+   }
+
+   if (ctx->Pixel.FragmentAlphaSource == GL_CURRENT_RASTER_COLOR) {
+      GLuint i;
+      for (i = 0; i < n; i++) {
+         q[i] = ctx->Current.RasterColor[ACOMP];
+      }
+   }
+   else {
+      GLuint i;
+      ASSERT(ctx->Pixel.FragmentAlphaSource == GL_PIXEL_GROUP_COLOR_SGIS);
+      for (i = 0; i < n; i++) {
+         q[i] = byteToFloat[rgba[i][ACOMP]];
+      }
+   }
+}
diff --git a/xc/extras/Mesa/src/pixeltex.h b/xc/extras/Mesa/src/pixeltex.h
new file mode 100644
index 000000000..d4f0718c1
--- /dev/null
+++ b/xc/extras/Mesa/src/pixeltex.h
@@ -0,0 +1,69 @@
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.3
+ * 
+ * Copyright (C) 1999-2000  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"),
+ * 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 noti_mesa_PixelTexGenParameterfvce 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
+ * BRIAN PAUL 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.
+ */
+
+
+#ifndef PIXELTEX_H
+#define PIXELTEX_H
+
+
+extern void
+_mesa_PixelTexGenSGIX(GLenum mode);
+
+extern void
+_mesa_PixelTexGenParameterfSGIS(GLenum target, GLfloat value);
+
+#ifdef VMS
+#define _mesa_PixelTexGenParameterfvSGIS _mesa_PixelTexGenParameterfv
+#endif
+extern void
+_mesa_PixelTexGenParameterfvSGIS(GLenum target, const GLfloat *value);
+
+extern void
+_mesa_PixelTexGenParameteriSGIS(GLenum target, GLint value);
+
+#ifdef VMS
+#define _mesa_PixelTexGenParameterivSGIS _mesa_PixelTexGenParameteriv
+#endif
+extern void
+_mesa_PixelTexGenParameterivSGIS(GLenum target, const GLint *value);
+
+#ifdef VMS
+#define _mesa_GetPixelTexGenParameterfvSGIS _mesa_GetPixelTexGenParameterfv
+#endif
+extern void
+_mesa_GetPixelTexGenParameterfvSGIS(GLenum target, GLfloat *value);
+
+#ifdef VMS
+#define _mesa_GetPixelTexGenParameterivSGIS _mesa_GetPixelTexGenParameteriv
+#endif
+extern void
+_mesa_GetPixelTexGenParameterivSGIS(GLenum target, GLint *value);
+
+extern void
+_mesa_pixeltexgen(GLcontext *ctx, GLuint n, const GLubyte rgba[][4],
+                  GLfloat s[], GLfloat t[], GLfloat r[], GLfloat q[]);
+
+
+#endif