1 files changed, 117 insertions, 103 deletions

diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index e5ec35c77f..a94bbf3fdf 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1,14 +1,9 @@
-/**
- * \file context.c
- * Mesa context/visual/framebuffer management functions.
- * \author Brian Paul
- */
-
 /*
  * Mesa 3-D graphics library
- * Version:  6.5
+ * Version:  7.3
  *
- * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2008  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"),
@@ -28,6 +23,11 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
+/**
+ * \file context.c
+ * Mesa context/visual/framebuffer management functions.
+ * \author Brian Paul
+ */
 
 /**
  * \mainpage Mesa Main Module
@@ -77,6 +77,7 @@
 
 
 #include "glheader.h"
+#include "mfeatures.h"
 #include "imports.h"
 #if FEATURE_accum
 #include "accum.h"
@@ -151,10 +152,7 @@
 #include "shader/atifragshader.h"
 #endif
 #if _HAVE_FULL_GL
-#include "math/m_translate.h"
 #include "math/m_matrix.h"
-#include "math/m_xform.h"
-#include "math/mathmod.h"
 #endif
 
 #ifdef USE_SPARC_ASM
@@ -186,6 +184,7 @@ GLfloat _mesa_ubyte_to_float_color_tab[256];
 void
 _mesa_notifySwapBuffers(__GLcontext *ctx)
 {
+   FLUSH_VERTICES( ctx, 0 );
    if (ctx->Driver.Flush) {
       ctx->Driver.Flush(ctx);
    }
@@ -387,13 +386,9 @@ one_time_init( GLcontext *ctx )
 
       _mesa_init_sqrt_table();
 
-#if _HAVE_FULL_GL
-      _math_init();
-
       for (i = 0; i < 256; i++) {
          _mesa_ubyte_to_float_color_tab[i] = (float) i / 255.0F;
       }
-#endif
 
 #ifdef USE_SPARC_ASM
       _mesa_init_sparc_glapi_relocs();
@@ -429,6 +424,7 @@ one_time_init( GLcontext *ctx )
 static GLboolean
 alloc_shared_state( GLcontext *ctx )
 {
+   GLuint i;
    struct gl_shared_state *ss = CALLOC_STRUCT(gl_shared_state);
    if (!ss)
       return GL_FALSE;
@@ -470,36 +466,25 @@ alloc_shared_state( GLcontext *ctx )
    ss->ShaderObjects = _mesa_NewHashTable();
 #endif
 
-   ss->Default1D = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_1D);
-   if (!ss->Default1D)
-      goto cleanup;
-
-   ss->Default2D = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_2D);
-   if (!ss->Default2D)
-      goto cleanup;
-
-   ss->Default3D = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_3D);
-   if (!ss->Default3D)
-      goto cleanup;
-
-   ss->DefaultCubeMap = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_CUBE_MAP_ARB);
-   if (!ss->DefaultCubeMap)
-      goto cleanup;
-
-   ss->DefaultRect = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_RECTANGLE_NV);
-   if (!ss->DefaultRect)
-      goto cleanup;
-
-   ss->Default1DArray = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_1D_ARRAY_EXT);
-   if (!ss->Default1DArray)
-      goto cleanup;
-
-   ss->Default2DArray = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_2D_ARRAY_EXT);
-   if (!ss->Default2DArray)
-      goto cleanup;
+   /* Create default texture objects */
+   for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
+      /* NOTE: the order of these enums matches the TEXTURE_x_INDEX values */
+      static const GLenum targets[NUM_TEXTURE_TARGETS] = {
+         GL_TEXTURE_2D_ARRAY_EXT,
+         GL_TEXTURE_1D_ARRAY_EXT,
+         GL_TEXTURE_CUBE_MAP,
+         GL_TEXTURE_3D,
+         GL_TEXTURE_RECTANGLE_NV,
+         GL_TEXTURE_2D,
+         GL_TEXTURE_1D
+      };
+      ss->DefaultTex[i] = ctx->Driver.NewTextureObject(ctx, 0, targets[i]);
+      if (!ss->DefaultTex[i])
+         goto cleanup;
+   }
 
    /* sanity check */
-   assert(ss->Default1D->RefCount == 1);
+   assert(ss->DefaultTex[TEXTURE_1D_INDEX]->RefCount == 1);
 
    _glthread_INIT_MUTEX(ss->TexMutex);
    ss->TextureStateStamp = 0;
@@ -553,20 +538,10 @@ cleanup:
       _mesa_DeleteHashTable(ss->RenderBuffers);
 #endif
 
-   if (ss->Default1D)
-      (*ctx->Driver.DeleteTexture)(ctx, ss->Default1D);
-   if (ss->Default2D)
-      (*ctx->Driver.DeleteTexture)(ctx, ss->Default2D);
-   if (ss->Default3D)
-      (*ctx->Driver.DeleteTexture)(ctx, ss->Default3D);
-   if (ss->DefaultCubeMap)
-      (*ctx->Driver.DeleteTexture)(ctx, ss->DefaultCubeMap);
-   if (ss->DefaultRect)
-      (*ctx->Driver.DeleteTexture)(ctx, ss->DefaultRect);
-   if (ss->Default1DArray)
-      (*ctx->Driver.DeleteTexture)(ctx, ss->Default1DArray);
-   if (ss->Default2DArray)
-      (*ctx->Driver.DeleteTexture)(ctx, ss->Default2DArray);
+   for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
+      if (ss->DefaultTex[i])
+         ctx->Driver.DeleteTexture(ctx, ss->DefaultTex[i]);
+   }
 
    _mesa_free(ss);
 
@@ -581,7 +556,7 @@ static void
 delete_displaylist_cb(GLuint id, void *data, void *userData)
 {
 #if FEATURE_dlist
-   struct mesa_display_list *list = (struct mesa_display_list *) data;
+   struct gl_display_list *list = (struct gl_display_list *) data;
    GLcontext *ctx = (GLcontext *) userData;
    _mesa_delete_list(ctx, list);
 #endif
@@ -729,6 +704,8 @@ delete_renderbuffer_cb(GLuint id, void *data, void *userData)
 static void
 free_shared_state( GLcontext *ctx, struct gl_shared_state *ss )
 {
+   GLuint i;
+
    /*
     * Free display lists
     */
@@ -778,13 +755,9 @@ free_shared_state( GLcontext *ctx, struct gl_shared_state *ss )
     */
    ASSERT(ctx->Driver.DeleteTexture);
    /* the default textures */
-   ctx->Driver.DeleteTexture(ctx, ss->Default1D);
-   ctx->Driver.DeleteTexture(ctx, ss->Default2D);
-   ctx->Driver.DeleteTexture(ctx, ss->Default3D);
-   ctx->Driver.DeleteTexture(ctx, ss->DefaultCubeMap);
-   ctx->Driver.DeleteTexture(ctx, ss->DefaultRect);
-   ctx->Driver.DeleteTexture(ctx, ss->Default1DArray);
-   ctx->Driver.DeleteTexture(ctx, ss->Default2DArray);
+   for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
+      ctx->Driver.DeleteTexture(ctx, ss->DefaultTex[i]);
+   }
    /* all other textures */
    _mesa_HashDeleteAll(ss->TexObjects, delete_texture_cb, ctx);
    _mesa_DeleteHashTable(ss->TexObjects);
@@ -809,7 +782,7 @@ _mesa_init_current(GLcontext *ctx)
    }
 
    /* redo special cases: */
-   ASSIGN_4V( ctx->Current.Attrib[VERT_ATTRIB_WEIGHT], 1.0, 0.0, 0.0, 1.0 );
+   ASSIGN_4V( ctx->Current.Attrib[VERT_ATTRIB_WEIGHT], 1.0, 0.0, 0.0, 0.0 );
    ASSIGN_4V( ctx->Current.Attrib[VERT_ATTRIB_NORMAL], 0.0, 0.0, 1.0, 1.0 );
    ASSIGN_4V( ctx->Current.Attrib[VERT_ATTRIB_COLOR0], 1.0, 1.0, 1.0, 1.0 );
    ASSIGN_4V( ctx->Current.Attrib[VERT_ATTRIB_COLOR1], 0.0, 0.0, 0.0, 1.0 );
@@ -870,8 +843,8 @@ _mesa_init_constants(GLcontext *ctx)
    assert(MAX_TEXTURE_LEVELS >= MAX_3D_TEXTURE_LEVELS);
    assert(MAX_TEXTURE_LEVELS >= MAX_CUBE_TEXTURE_LEVELS);
 
-   assert(MAX_TEXTURE_UNITS >= MAX_TEXTURE_COORD_UNITS);
-   assert(MAX_TEXTURE_UNITS >= MAX_TEXTURE_IMAGE_UNITS);
+   /* Max texture size should be <= max viewport size (render to texture) */
+   assert((1 << (MAX_TEXTURE_LEVELS - 1)) <= MAX_WIDTH);
 
    /* Constants, may be overriden (usually only reduced) by device drivers */
    ctx->Const.MaxTextureLevels = MAX_TEXTURE_LEVELS;
@@ -935,6 +908,9 @@ _mesa_init_constants(GLcontext *ctx)
    ctx->Const.MaxVarying = MAX_VARYING;
 #endif
 
+   /* GL_ARB_framebuffer_object */
+   ctx->Const.MaxSamples = 0;
+
    /* sanity checks */
    ASSERT(ctx->Const.MaxTextureUnits == MIN2(ctx->Const.MaxTextureImageUnits,
                                              ctx->Const.MaxTextureCoordUnits));
@@ -963,13 +939,21 @@ check_context_limits(GLcontext *ctx)
    assert(ctx->Const.MaxTextureUnits <= MAX_TEXTURE_IMAGE_UNITS);
    assert(ctx->Const.MaxTextureUnits <= MAX_TEXTURE_COORD_UNITS);
 
-   assert(ctx->Const.MaxViewportWidth <= MAX_WIDTH);
-   assert(ctx->Const.MaxViewportHeight <= MAX_WIDTH);
+   /* number of coord units cannot be greater than number of image units */
+   assert(ctx->Const.MaxTextureCoordUnits <= ctx->Const.MaxTextureImageUnits);
+
+   assert(ctx->Const.MaxTextureLevels <= MAX_TEXTURE_LEVELS);
+   assert(ctx->Const.Max3DTextureLevels <= MAX_3D_TEXTURE_LEVELS);
+   assert(ctx->Const.MaxCubeTextureLevels <= MAX_CUBE_TEXTURE_LEVELS);
+   assert(ctx->Const.MaxTextureRectSize <= MAX_TEXTURE_RECT_SIZE);
 
    /* make sure largest texture image is <= MAX_WIDTH in size */
-   assert((1 << (ctx->Const.MaxTextureLevels -1 )) <= MAX_WIDTH);
-   assert((1 << (ctx->Const.MaxCubeTextureLevels -1 )) <= MAX_WIDTH);
-   assert((1 << (ctx->Const.Max3DTextureLevels -1 )) <= MAX_WIDTH);
+   assert((1 << (ctx->Const.MaxTextureLevels - 1)) <= MAX_WIDTH);
+   assert((1 << (ctx->Const.MaxCubeTextureLevels - 1)) <= MAX_WIDTH);
+   assert((1 << (ctx->Const.Max3DTextureLevels - 1)) <= MAX_WIDTH);
+
+   assert(ctx->Const.MaxViewportWidth <= MAX_WIDTH);
+   assert(ctx->Const.MaxViewportHeight <= MAX_WIDTH);
 
    assert(ctx->Const.MaxDrawBuffers <= MAX_DRAW_BUFFERS);
 
@@ -1063,7 +1047,6 @@ init_attrib_groups(GLcontext *ctx)
    /* Miscellaneous */
    ctx->NewState = _NEW_ALL;
    ctx->ErrorValue = (GLenum) GL_NO_ERROR;
-   ctx->_Facing = 0;
    ctx->varying_vp_inputs = ~0;
 
    return GL_TRUE;
@@ -1071,6 +1054,28 @@ init_attrib_groups(GLcontext *ctx)
 
 
 /**
+ * Update default objects in a GL context with respect to shared state.
+ *
+ * \param ctx GL context.
+ *
+ * Removes references to old default objects, (texture objects, program
+ * objects, etc.) and changes to reference those from the current shared
+ * state.
+ */
+static GLboolean
+update_default_objects(GLcontext *ctx)
+{
+   assert(ctx);
+
+   _mesa_update_default_objects_program(ctx);
+   _mesa_update_default_objects_texture(ctx);
+   _mesa_update_default_objects_buffer_objects(ctx);
+
+   return GL_TRUE;
+}
+
+
+/**
  * This is the default function we plug into all dispatch table slots
  * This helps prevents a segfault when someone calls a GL function without
  * first checking if the extension's supported.
@@ -1205,7 +1210,6 @@ _mesa_initialize_context(GLcontext *ctx,
 
    ctx->FragmentProgram._MaintainTexEnvProgram
       = (_mesa_getenv("MESA_TEX_PROG") != NULL);
-   ctx->FragmentProgram._UseTexEnvProgram = ctx->FragmentProgram._MaintainTexEnvProgram;
 
    ctx->VertexProgram._MaintainTnlProgram
       = (_mesa_getenv("MESA_TNL_PROG") != NULL);
@@ -1274,18 +1278,19 @@ _mesa_create_context(const GLvisual *visual,
 void
 _mesa_free_context_data( GLcontext *ctx )
 {
-   /* if we're destroying the current context, unbind it first */
-   if (ctx == _mesa_get_current_context()) {
-      _mesa_make_current(NULL, NULL, NULL);
-   }
-   else {
-      /* unreference WinSysDraw/Read buffers */
-      _mesa_unreference_framebuffer(&ctx->WinSysDrawBuffer);
-      _mesa_unreference_framebuffer(&ctx->WinSysReadBuffer);
-      _mesa_unreference_framebuffer(&ctx->DrawBuffer);
-      _mesa_unreference_framebuffer(&ctx->ReadBuffer);
+   if (!_mesa_get_current_context()){
+      /* No current context, but we may need one in order to delete
+       * texture objs, etc.  So temporarily bind the context now.
+       */
+      _mesa_make_current(ctx, NULL, NULL);
    }
 
+   /* unreference WinSysDraw/Read buffers */
+   _mesa_reference_framebuffer(&ctx->WinSysDrawBuffer, NULL);
+   _mesa_reference_framebuffer(&ctx->WinSysReadBuffer, NULL);
+   _mesa_reference_framebuffer(&ctx->DrawBuffer, NULL);
+   _mesa_reference_framebuffer(&ctx->ReadBuffer, NULL);
+
    _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current, NULL);
    _mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current, NULL);
    _mesa_reference_vertprog(ctx, &ctx->VertexProgram._TnlProgram, NULL);
@@ -1294,6 +1299,9 @@ _mesa_free_context_data( GLcontext *ctx )
    _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current, NULL);
    _mesa_reference_fragprog(ctx, &ctx->FragmentProgram._TexEnvProgram, NULL);
 
+#if FEATURE_attrib_stack
+   _mesa_free_attrib_data(ctx);
+#endif
    _mesa_free_lighting_data( ctx );
 #if FEATURE_evaluators
    _mesa_free_eval_data( ctx );
@@ -1331,6 +1339,11 @@ _mesa_free_context_data( GLcontext *ctx )
 
    if (ctx->Extensions.String)
       _mesa_free((void *) ctx->Extensions.String);
+
+   /* unbind the context if it's currently bound */
+   if (ctx == _mesa_get_current_context()) {
+      _mesa_make_current(NULL, NULL, NULL);
+   }
 }
 
 
@@ -1562,8 +1575,6 @@ void
 _mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer,
                     GLframebuffer *readBuffer )
 {
-   GET_CURRENT_CONTEXT(oldCtx);
-
    if (MESA_VERBOSE & VERBOSE_API)
       _mesa_debug(newCtx, "_mesa_make_current()\n");
 
@@ -1588,13 +1599,6 @@ _mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer,
    _glapi_set_context((void *) newCtx);
    ASSERT(_mesa_get_current_context() == newCtx);
 
-   if (oldCtx) {
-      _mesa_unreference_framebuffer(&oldCtx->WinSysDrawBuffer);
-      _mesa_unreference_framebuffer(&oldCtx->WinSysReadBuffer);
-      _mesa_unreference_framebuffer(&oldCtx->DrawBuffer);
-      _mesa_unreference_framebuffer(&oldCtx->ReadBuffer);
-   }
-         
    if (!newCtx) {
       _glapi_set_dispatch(NULL);  /* none current */
    }
@@ -1614,10 +1618,12 @@ _mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer,
           * or not bound to a user-created FBO.
           */
          if (!newCtx->DrawBuffer || newCtx->DrawBuffer->Name == 0) {
-         /* fix up the fb fields - these will end up wrong otherwise
-          * if the DRIdrawable changes, and everything relies on them.
-          * This is a bit messy (same as needed in _mesa_BindFramebufferEXT)
-	  */
+            /* KW: merge conflict here, revisit. 
+             */
+            /* fix up the fb fields - these will end up wrong otherwise
+             * if the DRIdrawable changes, and everything relies on them.
+             * This is a bit messy (same as needed in _mesa_BindFramebufferEXT)
+             */
             unsigned int i;
             GLenum buffers[MAX_DRAW_BUFFERS];
 
@@ -1631,9 +1637,11 @@ _mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer,
          }
          if (!newCtx->ReadBuffer || newCtx->ReadBuffer->Name == 0) {
             _mesa_reference_framebuffer(&newCtx->ReadBuffer, readBuffer);
-            _mesa_readbuffer_update_fields(newCtx, newCtx->Pixel.ReadBuffer);
          }
 
+         /* XXX only set this flag if we're really changing the draw/read
+          * framebuffer bindings.
+          */
 	 newCtx->NewState |= _NEW_BUFFERS;
 
 #if 1
@@ -1701,12 +1709,18 @@ GLboolean
 _mesa_share_state(GLcontext *ctx, GLcontext *ctxToShare)
 {
    if (ctx && ctxToShare && ctx->Shared && ctxToShare->Shared) {
-      ctx->Shared->RefCount--;
-      if (ctx->Shared->RefCount == 0) {
-         free_shared_state(ctx, ctx->Shared);
-      }
+      struct gl_shared_state *oldSharedState = ctx->Shared;
+
       ctx->Shared = ctxToShare->Shared;
       ctx->Shared->RefCount++;
+
+      update_default_objects(ctx);
+
+      oldSharedState->RefCount--;
+      if (oldSharedState->RefCount == 0) {
+         free_shared_state(ctx, oldSharedState);
+      }
+
       return GL_TRUE;
    }
    else {