[Mesa-dev] [RFC PATCH 1/2] i965/vec4: Extract function to set up vec4 prog key for precompiling.

[Paul Berry]

This will allow us to re-use it for precompiling geometry shaders.
---
 src/mesa/drivers/dri/i965/brw_vec4.cpp | 22 ++++++++++++++++++++++
 src/mesa/drivers/dri/i965/brw_vec4.h   |  4 ++++
 src/mesa/drivers/dri/i965/brw_vs.c     | 15 +--------------
 3 files changed, 27 insertions(+), 14 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp 
b/src/mesa/drivers/dri/i965/brw_vec4.cpp
index d3ee9a1..90db4c1 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp
@@ -1592,6 +1592,28 @@ brw_vs_emit(struct brw_context *brw,
 }
 
 
+void
+brw_vec4_setup_prog_key_for_precompile(struct gl_context *ctx,
+                                       struct brw_vec4_prog_key *key,
+                                       GLuint id, struct gl_program *prog)
+{
+   key->program_string_id = id;
+   key->clamp_vertex_color = ctx->API == API_OPENGL_COMPAT;
+
+   unsigned sampler_count = _mesa_fls(prog->SamplersUsed);
+   for (unsigned i = 0; i < sampler_count; i++) {
+      if (prog->ShadowSamplers & (1 << i)) {
+         /* Assume DEPTH_TEXTURE_MODE is the default: X, X, X, 1 */
+         key->tex.swizzles[i] =
+            MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_X, SWIZZLE_X, SWIZZLE_ONE);
+      } else {
+         /* Color sampler: assume no swizzling. */
+         key->tex.swizzles[i] = SWIZZLE_XYZW;
+      }
+   }
+}
+
+
 bool
 brw_vec4_prog_data_compare(const struct brw_vec4_prog_data *a,
                            const struct brw_vec4_prog_data *b)
diff --git a/src/mesa/drivers/dri/i965/brw_vec4.h 
b/src/mesa/drivers/dri/i965/brw_vec4.h
index 41d91e5..fa0dd2f 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.h
+++ b/src/mesa/drivers/dri/i965/brw_vec4.h
@@ -80,6 +80,10 @@ struct brw_vec4_prog_key {
 extern "C" {
 #endif
 
+void
+brw_vec4_setup_prog_key_for_precompile(struct gl_context *ctx,
+                                       struct brw_vec4_prog_key *key,
+                                       GLuint id, struct gl_program *prog);
 bool brw_vec4_prog_data_compare(const struct brw_vec4_prog_data *a,
                                 const struct brw_vec4_prog_data *b);
 void brw_vec4_prog_data_free(const struct brw_vec4_prog_data *prog_data);
diff --git a/src/mesa/drivers/dri/i965/brw_vs.c 
b/src/mesa/drivers/dri/i965/brw_vs.c
index c0ae3ed..3cab3fe 100644
--- a/src/mesa/drivers/dri/i965/brw_vs.c
+++ b/src/mesa/drivers/dri/i965/brw_vs.c
@@ -536,20 +536,7 @@ brw_vs_precompile(struct gl_context *ctx, struct 
gl_shader_program *prog)
 
    memset(&key, 0, sizeof(key));
 
-   key.base.program_string_id = bvp->id;
-   key.base.clamp_vertex_color = ctx->API == API_OPENGL_COMPAT;
-
-   unsigned sampler_count = _mesa_fls(vp->Base.SamplersUsed);
-   for (unsigned i = 0; i < sampler_count; i++) {
-      if (vp->Base.ShadowSamplers & (1 << i)) {
-         /* Assume DEPTH_TEXTURE_MODE is the default: X, X, X, 1 */
-         key.base.tex.swizzles[i] =
-            MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_X, SWIZZLE_X, SWIZZLE_ONE);
-      } else {
-         /* Color sampler: assume no swizzling. */
-         key.base.tex.swizzles[i] = SWIZZLE_XYZW;
-      }
-   }
+   brw_vec4_setup_prog_key_for_precompile(ctx, &key.base, bvp->id, &vp->Base);
 
    success = do_vs_prog(brw, prog, bvp, &key);
 
-- 
1.8.4.1

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