Merge branch 'origin' into i915-unification

1 files changed, 61 insertions, 16 deletions

diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c
index d15af22b7db..c9f8a0656e8 100644
--- a/src/mesa/main/texstate.c
+++ b/src/mesa/main/texstate.c
@@ -1,6 +1,6 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.5.3
+ * Version:  7.1
  *
  * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
  *
@@ -1141,26 +1141,29 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
 /*                       Texture Parameters                           */
 /**********************************************************************/
 
+/**
+ * Check if a coordinate wrap mode is supported for the texture target.
+ * \return GL_TRUE if legal, GL_FALSE otherwise
+ */
 static GLboolean 
-_mesa_validate_texture_wrap_mode(GLcontext * ctx,
-				 GLenum target, GLenum eparam)
+validate_texture_wrap_mode(GLcontext * ctx, GLenum target, GLenum wrap)
 {
    const struct gl_extensions * const e = & ctx->Extensions;
 
-   if (eparam == GL_CLAMP || eparam == GL_CLAMP_TO_EDGE ||
-       (eparam == GL_CLAMP_TO_BORDER && e->ARB_texture_border_clamp)) {
+   if (wrap == GL_CLAMP || wrap == GL_CLAMP_TO_EDGE ||
+       (wrap == GL_CLAMP_TO_BORDER && e->ARB_texture_border_clamp)) {
       /* any texture target */
       return GL_TRUE;
    }
    else if (target != GL_TEXTURE_RECTANGLE_NV &&
-	    (eparam == GL_REPEAT ||
-	     (eparam == GL_MIRRORED_REPEAT &&
+	    (wrap == GL_REPEAT ||
+	     (wrap == GL_MIRRORED_REPEAT &&
 	      e->ARB_texture_mirrored_repeat) ||
-	     (eparam == GL_MIRROR_CLAMP_EXT &&
+	     (wrap == GL_MIRROR_CLAMP_EXT &&
 	      (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) ||
-	     (eparam == GL_MIRROR_CLAMP_TO_EDGE_EXT &&
+	     (wrap == GL_MIRROR_CLAMP_TO_EDGE_EXT &&
 	      (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) ||
-	     (eparam == GL_MIRROR_CLAMP_TO_BORDER_EXT &&
+	     (wrap == GL_MIRROR_CLAMP_TO_BORDER_EXT &&
 	      (e->EXT_texture_mirror_clamp)))) {
       /* non-rectangle texture */
       return GL_TRUE;
@@ -1283,7 +1286,7 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
       case GL_TEXTURE_WRAP_S:
          if (texObj->WrapS == eparam)
             return;
-         if (_mesa_validate_texture_wrap_mode(ctx, texObj->Target, eparam)) {
+         if (validate_texture_wrap_mode(ctx, texObj->Target, eparam)) {
             FLUSH_VERTICES(ctx, _NEW_TEXTURE);
             texObj->WrapS = eparam;
          }
@@ -1294,7 +1297,7 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
       case GL_TEXTURE_WRAP_T:
          if (texObj->WrapT == eparam)
             return;
-         if (_mesa_validate_texture_wrap_mode(ctx, texObj->Target, eparam)) {
+         if (validate_texture_wrap_mode(ctx, texObj->Target, eparam)) {
             FLUSH_VERTICES(ctx, _NEW_TEXTURE);
             texObj->WrapT = eparam;
          }
@@ -1305,7 +1308,7 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
       case GL_TEXTURE_WRAP_R:
          if (texObj->WrapR == eparam)
             return;
-         if (_mesa_validate_texture_wrap_mode(ctx, texObj->Target, eparam)) {
+         if (validate_texture_wrap_mode(ctx, texObj->Target, eparam)) {
             FLUSH_VERTICES(ctx, _NEW_TEXTURE);
             texObj->WrapR = eparam;
          }
@@ -1515,7 +1518,7 @@ _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
          return;
    }
 
-   texObj->Complete = GL_FALSE;
+   texObj->_Complete = GL_FALSE;
 
    if (ctx->Driver.TexParameter) {
       (*ctx->Driver.TexParameter)( ctx, target, texObj, pname, params );
@@ -2793,6 +2796,47 @@ update_texture_matrices( GLcontext *ctx )
 
 
 /**
+ * Update texture object's _Function field.  We need to do this
+ * whenever any of the texture object's shadow-related fields change
+ * or when we start/stop using a fragment program.
+ *
+ * This function could be expanded someday to update additional per-object
+ * fields that depend on assorted state changes.
+ */
+static void
+update_texture_compare_function(GLcontext *ctx,
+                                struct gl_texture_object *tObj)
+{
+   /* XXX temporarily disable this test since it breaks the GLSL
+    * shadow2D(), etc. functions.
+    */
+   if (0 /*ctx->FragmentProgram._Current*/) {
+      /* Texel/coordinate comparison is ignored for programs.
+       * See GL_ARB_fragment_program/shader spec for details.
+       */
+      tObj->_Function = GL_NONE;
+   }
+   else if (tObj->CompareFlag) {
+      /* GL_SGIX_shadow */
+      if (tObj->CompareOperator == GL_TEXTURE_LEQUAL_R_SGIX) {
+         tObj->_Function = GL_LEQUAL;
+      }
+      else {
+         ASSERT(tObj->CompareOperator == GL_TEXTURE_GEQUAL_R_SGIX);
+         tObj->_Function = GL_GEQUAL;
+      }
+   }
+   else if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB) {
+      /* GL_ARB_shadow */
+      tObj->_Function = tObj->CompareFunc;
+   }
+   else {
+      tObj->_Function = GL_NONE;  /* pass depth through as grayscale */
+   }
+}
+
+
+/**
  * Helper function for determining which texture object (1D, 2D, cube, etc)
  * should actually be used.
  */
@@ -2802,12 +2846,13 @@ texture_override(GLcontext *ctx,
                  struct gl_texture_object *texObj, GLuint textureBit)
 {
    if (!texUnit->_ReallyEnabled && (enableBits & textureBit)) {
-      if (!texObj->Complete) {
+      if (!texObj->_Complete) {
          _mesa_test_texobj_completeness(ctx, texObj);
       }
-      if (texObj->Complete) {
+      if (texObj->_Complete) {
          texUnit->_ReallyEnabled = textureBit;
          texUnit->_Current = texObj;
+         update_texture_compare_function(ctx, texObj);
       }
    }
 }