glsl2: Add a constructor for _mesa_glsl_parse_state

Coming changes to the handling of built-in functions necessitate this.

3 files changed, 64 insertions, 0 deletions

diff --git a/src/glsl/Makefile b/src/glsl/Makefile
index 7bf95fbfc2..2b040377b0 100644
--- a/src/glsl/Makefile
+++ b/src/glsl/Makefile
@@ -93,6 +93,7 @@ INCLUDES = \
 	-I../mesa \
 	-I../mapi \
 	-I../mesa/shader \
+	-I../../include \
 	$(LIBRARY_INCLUDES)
 
 ALL_SOURCES = \
diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
index cb7b6d36a2..bcf2579733 100644
--- a/src/glsl/glsl_parser_extras.cpp
+++ b/src/glsl/glsl_parser_extras.cpp
@@ -34,6 +34,47 @@ extern "C" {
 #include "glsl_parser_extras.h"
 #include "glsl_parser.h"
 
+_mesa_glsl_parse_state::_mesa_glsl_parse_state(struct __GLcontextRec *ctx,
+					       GLenum target, void *mem_ctx)
+{
+   switch (target) {
+   case GL_VERTEX_SHADER:   this->target = vertex_shader; break;
+   case GL_FRAGMENT_SHADER: this->target = fragment_shader; break;
+   case GL_GEOMETRY_SHADER: this->target = geometry_shader; break;
+   }
+
+   this->scanner = NULL;
+   this->translation_unit.make_empty();
+   this->symbols = new(mem_ctx) glsl_symbol_table;
+   this->info_log = talloc_strdup(mem_ctx, "");
+   this->error = false;
+   this->loop_or_switch_nesting = NULL;
+   this->ARB_texture_rectangle_enable = true;
+
+   if (ctx != NULL) {
+      this->extensions = &ctx->Extensions;
+
+      this->Const.MaxLights = ctx->Const.MaxLights;
+      this->Const.MaxClipPlanes = ctx->Const.MaxClipPlanes;
+      this->Const.MaxTextureUnits = ctx->Const.MaxTextureUnits;
+      this->Const.MaxTextureCoords = ctx->Const.MaxTextureCoordUnits;
+      this->Const.MaxVertexAttribs = ctx->Const.VertexProgram.MaxAttribs;
+      this->Const.MaxVertexUniformComponents = ctx->Const.VertexProgram.MaxUniformComponents;
+      this->Const.MaxVaryingFloats = ctx->Const.MaxVarying * 4;
+      this->Const.MaxVertexTextureImageUnits = ctx->Const.MaxVertexTextureImageUnits;
+      this->Const.MaxCombinedTextureImageUnits = ctx->Const.MaxCombinedTextureImageUnits;
+      this->Const.MaxTextureImageUnits = ctx->Const.MaxTextureImageUnits;
+      this->Const.MaxFragmentUniformComponents = ctx->Const.FragmentProgram.MaxUniformComponents;
+
+      this->Const.MaxDrawBuffers = ctx->Const.MaxDrawBuffers;
+   } else {
+      static struct gl_extensions null_extensions;
+
+      memset(&null_extensions, 0, sizeof(null_extensions));
+      this->extensions = &null_extensions;
+   }
+}
+
 const char *
 _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target)
 {
diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h
index fed6e8c823..e2efbd9ac9 100644
--- a/src/glsl/glsl_parser_extras.h
+++ b/src/glsl/glsl_parser_extras.h
@@ -35,7 +35,29 @@ enum _mesa_glsl_parser_targets {
    ir_shader
 };
 
+struct __GLcontextRec;
+
 struct _mesa_glsl_parse_state {
+   _mesa_glsl_parse_state(struct __GLcontextRec *ctx, GLenum target,
+			  void *mem_ctx);
+
+   /* Callers of this talloc-based new need not call delete. It's
+    * easier to just talloc_free 'ctx' (or any of its ancestors). */
+   static void* operator new(size_t size, void *ctx)
+   {
+      void *mem = talloc_zero_size(ctx, size);
+      assert(mem != NULL);
+
+      return mem;
+   }
+
+   /* If the user *does* call delete, that's OK, we will just
+    * talloc_free in that case. */
+   static void operator delete(void *mem)
+   {
+      talloc_free(mem);
+   }
+
    void *scanner;
    exec_list translation_unit;
    glsl_symbol_table *symbols;