gles: track gl buffer contents in a shadow buffer

[apitrace] / helpers / glsize.hpp

diff --git a/helpers/glsize.hpp b/helpers/glsize.hpp
index 6ffba688df60ec227354e559088719a0278a9b82..9d39a3b717f6f812aee787d58a3be5a73623ad6d 100644 (file)
--- a/helpers/glsize.hpp
+++ b/helpers/glsize.hpp
@@ -301,6 +301,14 @@ _glArrayPointer_size(GLint size, GLenum type, GLsizei stride, GLsizei count)
         return 0;
     }
 
+    if (size == GL_BGRA) {
+        size = 4; 
+    }
+
+    if (size > 4) {
+        os::log("apitrace: warning: %s: unexpected size 0x%04X\n", __FUNCTION__, size);
+    }
+
     size_t elementSize = size*_gl_type_size(type);
     if (!stride) {
         stride = (GLsizei)elementSize;
@@ -332,6 +340,11 @@ _glDrawArrays_count(GLint first, GLsizei count)
 
 #define _glDrawArraysEXT_count _glDrawArrays_count
 
+/* Forward declaration for definition in gltrace.py */
+void
+_shadow_glGetBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size,
+                              GLvoid *data);
+
 static inline GLuint
 _glDrawElementsBaseVertex_count(GLsizei count, GLenum type, const GLvoid *indices, GLint basevertex)
 {
@@ -352,7 +365,7 @@ _glDrawElementsBaseVertex_count(GLsizei count, GLenum type, const GLvoid *indice
             return 0;
         }
         memset(temp, 0, size);
-        _glGetBufferSubData(GL_ELEMENT_ARRAY_BUFFER, offset, size, temp);
+        _shadow_glGetBufferSubData(GL_ELEMENT_ARRAY_BUFFER, offset, size, temp);
         indices = temp;
     } else {
         if (!indices) {