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-rw-r--r--src/gallium/drivers/i915/i915_fpc_translate.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/src/gallium/drivers/i915/i915_fpc_translate.c b/src/gallium/drivers/i915/i915_fpc_translate.c
index 9e20010c4a1..cd8219e1121 100644
--- a/src/gallium/drivers/i915/i915_fpc_translate.c
+++ b/src/gallium/drivers/i915/i915_fpc_translate.c
@@ -1174,15 +1174,27 @@ void
i915_translate_fragment_program( struct i915_context *i915,
struct i915_fragment_shader *fs)
{
- struct i915_fp_compile *p = i915_init_compile(i915, fs);
+ struct i915_fp_compile *p;
const struct tgsi_token *tokens = fs->state.tokens;
-
- i915_find_wpos_space(p);
+ struct tgsi_shader_info info;
#if 0
tgsi_dump(tokens, 0);
#endif
+ tgsi_scan_shader(tokens, &info);
+
+ /* hw doesn't seem to like empty frag programs, even when the depth write
+ * fixup gets emitted below - may that one is fishy, too? */
+ if (info.num_instructions == 1) {
+ i915_use_passthrough_shader(fs);
+
+ return;
+ }
+
+ p = i915_init_compile(i915, fs);
+ i915_find_wpos_space(p);
+
i915_translate_instructions(p, tokens);
i915_fixup_depth_write(p);