broadcom/vc5: Skip emitting textures that aren't used.

Fixes crashes when ARB_fp uses texture[1] but not 0, as in piglit's
fp-fragment-position.

diff --git a/src/gallium/drivers/vc5/vc5_emit.c b/src/gallium/drivers/vc5/vc5_emit.c
index 094d5482954f22cdbb949cc07ad0723fb30e1304..de4737eeec860b387ccb2761aac1bb53bf342366 100644 (file)
--- a/src/gallium/drivers/vc5/vc5_emit.c
+++ b/src/gallium/drivers/vc5/vc5_emit.c
@@ -201,8 +201,10 @@ emit_one_texture(struct vc5_context *vc5, struct vc5_texture_stateobj *stage_tex
 static void
 emit_textures(struct vc5_context *vc5, struct vc5_texture_stateobj *stage_tex)
 {
-        for (int i = 0; i < stage_tex->num_textures; i++)
-                emit_one_texture(vc5, stage_tex, i);
+        for (int i = 0; i < stage_tex->num_textures; i++) {
+                if (stage_tex->textures[i])
+                        emit_one_texture(vc5, stage_tex, i);
+        }
 }
 
 void