From 66a6050ad8a56d4d04624870e6845579bd0581b2 Mon Sep 17 00:00:00 2001
From: Timothy Arceri <timothy.arceri@collabora.com>
Date: Tue, 22 Nov 2016 18:25:20 +1100
Subject: [PATCH] mesa/glsl: move redeclares_gl_fragcoord to gl_shader

This is never used in gl_linked_shader other than as a temp
during linking so just use a temp instead.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
---
 src/compiler/glsl/glsl_parser_extras.cpp |  3 +--
 src/compiler/glsl/linker.cpp             | 21 ++++++++-------------
 src/mesa/main/mtypes.h                   |  3 ++-
 3 files changed, 11 insertions(+), 16 deletions(-)

diff --git a/src/compiler/glsl/glsl_parser_extras.cpp b/src/compiler/glsl/glsl_parser_extras.cpp
index d84a3f8f5f7..99bdfcc3408 100644
--- a/src/compiler/glsl/glsl_parser_extras.cpp
+++ b/src/compiler/glsl/glsl_parser_extras.cpp
@@ -1808,8 +1808,7 @@ set_shader_inout_layout(struct gl_shader *shader,
       break;
 
    case MESA_SHADER_FRAGMENT:
-      shader->info.redeclares_gl_fragcoord =
-         state->fs_redeclares_gl_fragcoord;
+      shader->redeclares_gl_fragcoord = state->fs_redeclares_gl_fragcoord;
       shader->info.uses_gl_fragcoord = state->fs_uses_gl_fragcoord;
       shader->info.pixel_center_integer = state->fs_pixel_center_integer;
       shader->info.origin_upper_left = state->fs_origin_upper_left;
diff --git a/src/compiler/glsl/linker.cpp b/src/compiler/glsl/linker.cpp
index 3846679c260..68761518290 100644
--- a/src/compiler/glsl/linker.cpp
+++ b/src/compiler/glsl/linker.cpp
@@ -1826,7 +1826,7 @@ link_fs_inout_layout_qualifiers(struct gl_shader_program *prog,
                                 struct gl_shader **shader_list,
                                 unsigned num_shaders)
 {
-   linked_shader->info.redeclares_gl_fragcoord = false;
+   bool redeclares_gl_fragcoord = false;
    linked_shader->info.uses_gl_fragcoord = false;
    linked_shader->info.origin_upper_left = false;
    linked_shader->info.pixel_center_integer = false;
@@ -1844,12 +1844,10 @@ link_fs_inout_layout_qualifiers(struct gl_shader_program *prog,
        *    it must be redeclared in all the fragment shaders in that program
        *    that have a static use gl_FragCoord."
        */
-      if ((linked_shader->info.redeclares_gl_fragcoord
-           && !shader->info.redeclares_gl_fragcoord
-           && shader->info.uses_gl_fragcoord)
-          || (shader->info.redeclares_gl_fragcoord
-              && !linked_shader->info.redeclares_gl_fragcoord
-              && linked_shader->info.uses_gl_fragcoord)) {
+      if ((redeclares_gl_fragcoord && !shader->redeclares_gl_fragcoord &&
+           shader->info.uses_gl_fragcoord)
+          || (shader->redeclares_gl_fragcoord && !redeclares_gl_fragcoord &&
+              linked_shader->info.uses_gl_fragcoord)) {
              linker_error(prog, "fragment shader defined with conflicting "
                          "layout qualifiers for gl_FragCoord\n");
       }
@@ -1859,8 +1857,7 @@ link_fs_inout_layout_qualifiers(struct gl_shader_program *prog,
        *   "All redeclarations of gl_FragCoord in all fragment shaders in a
        *    single program must have the same set of qualifiers."
        */
-      if (linked_shader->info.redeclares_gl_fragcoord &&
-          shader->info.redeclares_gl_fragcoord &&
+      if (redeclares_gl_fragcoord && shader->redeclares_gl_fragcoord &&
           (shader->info.origin_upper_left !=
            linked_shader->info.origin_upper_left ||
            shader->info.pixel_center_integer !=
@@ -1874,10 +1871,8 @@ link_fs_inout_layout_qualifiers(struct gl_shader_program *prog,
        * are multiple redeclarations, all the fields except uses_gl_fragcoord
        * are already known to be the same.
        */
-      if (shader->info.redeclares_gl_fragcoord ||
-          shader->info.uses_gl_fragcoord) {
-         linked_shader->info.redeclares_gl_fragcoord =
-            shader->info.redeclares_gl_fragcoord;
+      if (shader->redeclares_gl_fragcoord || shader->info.uses_gl_fragcoord) {
+         redeclares_gl_fragcoord = shader->redeclares_gl_fragcoord;
          linked_shader->info.uses_gl_fragcoord =
             linked_shader->info.uses_gl_fragcoord ||
             shader->info.uses_gl_fragcoord;
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index cb35aa1c95c..cbf2e958113 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2243,7 +2243,6 @@ struct gl_subroutine_function
 struct gl_shader_info
 {
    bool uses_gl_fragcoord;
-   bool redeclares_gl_fragcoord;
    bool PostDepthCoverage;
    bool InnerCoverage;
 
@@ -2435,6 +2434,8 @@ struct gl_shader
 
    bool ARB_fragment_coord_conventions_enable;
 
+   bool redeclares_gl_fragcoord;
+
    struct gl_shader_info info;
 };
 
-- 
2.30.2