vc4: Skip re-emitting the shader_rec if it's unchanged.

It's a bunch of work for us to emit it (and its uniforms), more work for
the kernel to validate it, and additional work for the CLE to read
it. Improves es2gears framerate by about 50%.

Signed-off-by: Eric Anholt <[email protected]>

1 files changed, 48 insertions, 0 deletions

diff --git a/src/gallium/drivers/vc4/vc4_uniforms.c b/src/gallium/drivers/vc4/vc4_uniforms.c
index 5613d6b28c0..d4c71376a55 100644
--- a/src/gallium/drivers/vc4/vc4_uniforms.c
+++ b/src/gallium/drivers/vc4/vc4_uniforms.c
@@ -284,3 +284,51 @@ vc4_write_uniforms(struct vc4_context *vc4, struct vc4_compiled_shader *shader,
 
         cl_end(&vc4->uniforms, uniforms);
 }
+
+void
+vc4_set_shader_uniform_dirty_flags(struct vc4_compiled_shader *shader)
+{
+        uint32_t dirty = 0;
+
+        for (int i = 0; i < shader->uniforms.count; i++) {
+                switch (shader->uniforms.contents[i]) {
+                case QUNIFORM_CONSTANT:
+                        break;
+                case QUNIFORM_UNIFORM:
+                case QUNIFORM_UBO_ADDR:
+                        dirty |= VC4_DIRTY_CONSTBUF;
+                        break;
+
+                case QUNIFORM_VIEWPORT_X_SCALE:
+                case QUNIFORM_VIEWPORT_Y_SCALE:
+                case QUNIFORM_VIEWPORT_Z_OFFSET:
+                case QUNIFORM_VIEWPORT_Z_SCALE:
+                        dirty |= VC4_DIRTY_VIEWPORT;
+                        break;
+
+                case QUNIFORM_USER_CLIP_PLANE:
+                        dirty |= VC4_DIRTY_CLIP;
+                        break;
+
+                case QUNIFORM_TEXTURE_CONFIG_P0:
+                case QUNIFORM_TEXTURE_CONFIG_P1:
+                case QUNIFORM_TEXTURE_CONFIG_P2:
+                case QUNIFORM_TEXTURE_BORDER_COLOR:
+                case QUNIFORM_TEXRECT_SCALE_X:
+                case QUNIFORM_TEXRECT_SCALE_Y:
+                        dirty |= VC4_DIRTY_TEXSTATE;
+                        break;
+
+                case QUNIFORM_BLEND_CONST_COLOR:
+                        dirty |= VC4_DIRTY_BLEND_COLOR;
+                        break;
+
+                case QUNIFORM_STENCIL:
+                case QUNIFORM_ALPHA_REF:
+                        dirty |= VC4_DIRTY_ZSA;
+                        break;
+                }
+        }
+
+        shader->uniform_dirty_bits = dirty;
+}