mesa: new _mesa_valid_to_render() function

[mesa.git] / src / mesa / shader / arbprogram.c

diff --git a/src/mesa/shader/arbprogram.c b/src/mesa/shader/arbprogram.c
index 317d623a22846953b41c873acda770bc09b289ef..39136efadac2e755de8d7f43813150a2d8887ee3 100644 (file)
--- a/src/mesa/shader/arbprogram.c
+++ b/src/mesa/shader/arbprogram.c
@@ -254,6 +254,8 @@ _mesa_EnableVertexAttribArrayARB(GLuint index)
       return;
    }
 
+   ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));
+
    FLUSH_VERTICES(ctx, _NEW_ARRAY);
    ctx->Array.ArrayObj->VertexAttrib[index].Enabled = GL_TRUE;
    ctx->Array.ArrayObj->_Enabled |= _NEW_ARRAY_ATTRIB(index);
@@ -273,6 +275,8 @@ _mesa_DisableVertexAttribArrayARB(GLuint index)
       return;
    }
 
+   ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));
+
    FLUSH_VERTICES(ctx, _NEW_ARRAY);
    ctx->Array.ArrayObj->VertexAttrib[index].Enabled = GL_FALSE;
    ctx->Array.ArrayObj->_Enabled &= ~_NEW_ARRAY_ATTRIB(index);
@@ -299,32 +303,41 @@ _mesa_GetVertexAttribdvARB(GLuint index, GLenum pname, GLdouble *params)
 }
 
 
+/**
+ * Return info for a generic vertex attribute array (no alias with
+ * legacy vertex attributes (pos, normal, color, etc)).
+ */
 void GLAPIENTRY
 _mesa_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
 {
+   const struct gl_client_array *array;
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
-   if (index >= MAX_VERTEX_PROGRAM_ATTRIBS) {
+   if (index >= MAX_VERTEX_GENERIC_ATTRIBS) {
       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribfvARB(index)");
       return;
    }
 
+   ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));
+
+   array = &ctx->Array.ArrayObj->VertexAttrib[index];
+
    switch (pname) {
       case GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB:
-         params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].Enabled;
+         params[0] = (GLfloat) array->Enabled;
          break;
       case GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB:
-         params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].Size;
+         params[0] = (GLfloat) array->Size;
          break;
       case GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB:
-         params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].Stride;
+         params[0] = (GLfloat) array->Stride;
          break;
       case GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB:
-         params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].Type;
+         params[0] = (GLfloat) array->Type;
          break;
       case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB:
-         params[0] = ctx->Array.ArrayObj->VertexAttrib[index].Normalized;
+         params[0] = array->Normalized;
          break;
       case GL_CURRENT_VERTEX_ATTRIB_ARB:
          if (index == 0) {
@@ -336,7 +349,7 @@ _mesa_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
          COPY_4V(params, ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + index]);
          break;
       case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB:
-         params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].BufferObj->Name;
+         params[0] = (GLfloat) array->BufferObj->Name;
          break;
       default:
          _mesa_error(ctx, GL_INVALID_ENUM, "glGetVertexAttribfvARB(pname)");
@@ -380,6 +393,8 @@ _mesa_GetVertexAttribPointervARB(GLuint index, GLenum pname, GLvoid **pointer)
       return;
    }
 
+   ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));
+
    *pointer = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[index].Ptr;
 }