Looks like we need at least one instruction for pixel shader.

diff --git a/src/mesa/drivers/dri/r300/r300_fixed_pipelines.h b/src/mesa/drivers/dri/r300/r300_fixed_pipelines.h
index e10318f..73b410f 100644 (file)
--- a/src/mesa/drivers/dri/r300/r300_fixed_pipelines.h
+++ b/src/mesa/drivers/dri/r300/r300_fixed_pipelines.h
@@ -99,6 +99,11 @@ static struct r300_pixel_shader_state FLAT_COLOR_PIXEL_SHADER={
                                },
                        alu: {
                                length: 0,
+                                       /* My understanding is that we need at least 1 instructions for pixel shader, 
+                                          in particular because alu_end==0 means there is one instruction */
+                               inst: {
+                                       PFS_NOP
+                                       }
                                },
                        node: {
                                { 0, 0, 0, 0},