[Mesa-dev] [PATCH 2/5] mesa: rename PreferDP4 to OptimizeForAOS.

[Matt Turner]

This flag was really just a proxy for determining whether the backend
was vector (AOS) or scalar (SOA). It will be used to apply a future
optimization only for vector backends.
---
 src/glsl/glsl_parser_extras.cpp              | 2 +-
 src/mesa/drivers/dri/i965/brw_context.c      | 2 +-
 src/mesa/drivers/dri/r200/r200_context.c     | 2 +-
 src/mesa/drivers/dri/radeon/radeon_context.c | 2 +-
 src/mesa/main/ffvertex_prog.c                | 2 +-
 src/mesa/main/mtypes.h                       | 9 ++++++---
 src/mesa/program/programopt.c                | 2 +-
 src/mesa/state_tracker/st_context.c          | 2 +-
 8 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
index 5f19368..c759569 100644
--- a/src/glsl/glsl_parser_extras.cpp
+++ b/src/glsl/glsl_parser_extras.cpp
@@ -1591,7 +1591,7 @@ do_common_optimization(exec_list *ir, bool linked,
    progress = do_copy_propagation(ir) || progress;
    progress = do_copy_propagation_elements(ir) || progress;
 
-   if (options->PreferDP4 && !linked)
+   if (options->OptimizeForAOS && !linked)
       progress = opt_flip_matrices(ir) || progress;
 
    if (linked)
diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index 78c06fc..da34e3d 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -478,7 +478,7 @@ brw_initialize_context_constants(struct brw_context *brw)
       ctx->ShaderCompilerOptions[i].LowerClipDistance = true;
    }
 
-   ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].PreferDP4 = true;
+   ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = true;
 }
 
 /**
diff --git a/src/mesa/drivers/dri/r200/r200_context.c b/src/mesa/drivers/dri/r200/r200_context.c
index 5c53720..982f1a2 100644
--- a/src/mesa/drivers/dri/r200/r200_context.c
+++ b/src/mesa/drivers/dri/r200/r200_context.c
@@ -338,7 +338,7 @@ GLboolean r200CreateContext( gl_api api,
    ctx->Const.MaxDrawBuffers = 1;
    ctx->Const.MaxColorAttachments = 1;
 
-   ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].PreferDP4 = GL_TRUE;
+   ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = GL_TRUE;
 
    /* Install the customized pipeline:
     */
diff --git a/src/mesa/drivers/dri/radeon/radeon_context.c b/src/mesa/drivers/dri/radeon/radeon_context.c
index 02dbe06..2658f69 100644
--- a/src/mesa/drivers/dri/radeon/radeon_context.c
+++ b/src/mesa/drivers/dri/radeon/radeon_context.c
@@ -301,7 +301,7 @@ r100CreateContext( gl_api api,
    ctx->Const.MaxColorAttachments = 1;
    ctx->Const.MaxRenderbufferSize = 2048;
 
-   ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].PreferDP4 = true;
+   ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = true;
 
    /* Install the customized pipeline:
     */
diff --git a/src/mesa/main/ffvertex_prog.c b/src/mesa/main/ffvertex_prog.c
index 074fbf9..93c941a 100644
--- a/src/mesa/main/ffvertex_prog.c
+++ b/src/mesa/main/ffvertex_prog.c
@@ -1676,7 +1676,7 @@ _mesa_get_fixed_func_vertex_program(struct gl_context *ctx)
          return NULL;
 
       create_new_program( &key, prog,
-                          ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].PreferDP4,
+                          ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS,
                           ctx->Const.VertexProgram.MaxTemps );
 
 #if 0
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index f93bb56..a35f44b 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2724,10 +2724,13 @@ struct gl_shader_compiler_options
    GLuint MaxUnrollIterations;
 
    /**
-    * Prefer DP4 instructions (rather than MUL/MAD) for matrix * vector
-    * operations, such as position transformation.
+    * Optimize code for array of structures backends.
+    *
+    * This is a proxy for:
+    *   - preferring DP4 instructions (rather than MUL/MAD) for
+    *     matrix * vector operations, such as position transformation.
     */
-   GLboolean PreferDP4;
+   GLboolean OptimizeForAOS;
 
    struct gl_sl_pragmas DefaultPragmas; /**< Default #pragma settings */
 };
diff --git a/src/mesa/program/programopt.c b/src/mesa/program/programopt.c
index 7e00572..92a8831 100644
--- a/src/mesa/program/programopt.c
+++ b/src/mesa/program/programopt.c
@@ -218,7 +218,7 @@ _mesa_insert_mvp_mad_code(struct gl_context *ctx, struct gl_vertex_program *vpro
 void
 _mesa_insert_mvp_code(struct gl_context *ctx, struct gl_vertex_program *vprog)
 {
-   if (ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].PreferDP4)
+   if (ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS)
       _mesa_insert_mvp_dp4_code( ctx, vprog );
    else
       _mesa_insert_mvp_mad_code( ctx, vprog );
diff --git a/src/mesa/state_tracker/st_context.c b/src/mesa/state_tracker/st_context.c
index 2cc3567..9437bf8 100644
--- a/src/mesa/state_tracker/st_context.c
+++ b/src/mesa/state_tracker/st_context.c
@@ -240,7 +240,7 @@ struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
     * driver prefers DP4 or MUL/MAD for vertex transformation.
     */
    if (debug_get_option_mesa_mvp_dp4())
-      ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].PreferDP4 = GL_TRUE;
+      ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = GL_TRUE;
 
    return st_create_context_priv(ctx, pipe, options);
 }
-- 
1.8.3.2