+static ALWAYS_INLINE void
+begin_conditional_render(struct gl_context *ctx, GLuint queryId, GLenum mode,
+ bool no_error)
+{
+ struct gl_query_object *q = NULL;
+
+ assert(ctx->Query.CondRenderMode == GL_NONE);
+
+ if (queryId != 0)
+ q = _mesa_lookup_query_object(ctx, queryId);
+
+ if (!no_error) {
+ /* Section 2.14 (Conditional Rendering) of the OpenGL 3.0 spec says:
+ *
+ * "The error INVALID_VALUE is generated if <id> is not the name of an
+ * existing query object query."
+ */
+ if (!q) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glBeginConditionalRender(bad queryId=%u)", queryId);
+ return;
+ }
+ assert(q->Id == queryId);
+
+ switch (mode) {
+ case GL_QUERY_WAIT:
+ case GL_QUERY_NO_WAIT:
+ case GL_QUERY_BY_REGION_WAIT:
+ case GL_QUERY_BY_REGION_NO_WAIT:
+ break; /* OK */
+ case GL_QUERY_WAIT_INVERTED:
+ case GL_QUERY_NO_WAIT_INVERTED:
+ case GL_QUERY_BY_REGION_WAIT_INVERTED:
+ case GL_QUERY_BY_REGION_NO_WAIT_INVERTED:
+ if (ctx->Extensions.ARB_conditional_render_inverted)
+ break; /* OK */
+ /* fallthrough - invalid */
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBeginConditionalRender(mode=%s)",
+ _mesa_enum_to_string(mode));
+ return;
+ }
+
+ /* Section 2.14 (Conditional Rendering) of the OpenGL 3.0 spec says:
+ *
+ * "The error INVALID_OPERATION is generated if <id> is the name of a
+ * query object with a target other than SAMPLES_PASSED, or <id> is
+ * the name of a query currently in progress."
+ */
+ if ((q->Target != GL_SAMPLES_PASSED &&
+ q->Target != GL_ANY_SAMPLES_PASSED &&
+ q->Target != GL_ANY_SAMPLES_PASSED_CONSERVATIVE &&
+ q->Target != GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB &&
+ q->Target != GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB) || q->Active) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glBeginConditionalRender()");
+ return;
+ }
+ }
+
+ ctx->Query.CondRenderQuery = q;
+ ctx->Query.CondRenderMode = mode;
+
+ if (ctx->Driver.BeginConditionalRender)
+ ctx->Driver.BeginConditionalRender(ctx, q, mode);
+}
+
+
+void GLAPIENTRY
+_mesa_BeginConditionalRender_no_error(GLuint queryId, GLenum mode)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ begin_conditional_render(ctx, queryId, mode, true);
+}
+
+