mesa: Remove redundant _mesa_has_shader_subroutine

The checks in _mesa_has_shader_subroutine are slightly different than
_mesa_has_ARB_shader_subroutine, but they're not different in a way
that matters.  The only way to have ctx->Version >= 40 is if
ctx->Extensions.ARB_shader_subroutine is set.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>

3 files changed, 16 insertions, 26 deletions

diff --git a/src/mesa/main/context.h b/src/mesa/main/context.h
index 1871388..9a609dd 100644
--- a/src/mesa/main/context.h
+++ b/src/mesa/main/context.h
@@ -339,16 +339,6 @@ _mesa_has_compute_shaders(const struct gl_context *ctx)
 }
 
 /**
- * Checks if the context supports shader subroutines.
- */
-static inline bool
-_mesa_has_shader_subroutine(const struct gl_context *ctx)
-{
-   return ctx->API == API_OPENGL_CORE &&
-      (ctx->Version >= 40 || ctx->Extensions.ARB_shader_subroutine);
-}
-
-/**
  * Checks if the context supports tessellation.
  */
 static inline GLboolean
diff --git a/src/mesa/main/program_resource.c b/src/mesa/main/program_resource.c
index 5726ce1..19aaf48 100644
--- a/src/mesa/main/program_resource.c
+++ b/src/mesa/main/program_resource.c
@@ -49,18 +49,18 @@ supported_interface_enum(struct gl_context *ctx, GLenum iface)
    case GL_FRAGMENT_SUBROUTINE:
    case GL_VERTEX_SUBROUTINE_UNIFORM:
    case GL_FRAGMENT_SUBROUTINE_UNIFORM:
-      return _mesa_has_shader_subroutine(ctx);
+      return _mesa_has_ARB_shader_subroutine(ctx);
    case GL_GEOMETRY_SUBROUTINE:
    case GL_GEOMETRY_SUBROUTINE_UNIFORM:
-      return _mesa_has_geometry_shaders(ctx) && _mesa_has_shader_subroutine(ctx);
+      return _mesa_has_geometry_shaders(ctx) && _mesa_has_ARB_shader_subroutine(ctx);
    case GL_COMPUTE_SUBROUTINE:
    case GL_COMPUTE_SUBROUTINE_UNIFORM:
-      return _mesa_has_compute_shaders(ctx) && _mesa_has_shader_subroutine(ctx);
+      return _mesa_has_compute_shaders(ctx) && _mesa_has_ARB_shader_subroutine(ctx);
    case GL_TESS_CONTROL_SUBROUTINE:
    case GL_TESS_EVALUATION_SUBROUTINE:
    case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
    case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
-      return _mesa_has_tessellation(ctx) && _mesa_has_shader_subroutine(ctx);
+      return _mesa_has_tessellation(ctx) && _mesa_has_ARB_shader_subroutine(ctx);
    default:
       return false;
    }
@@ -514,20 +514,20 @@ _mesa_GetProgramResourceLocation(GLuint program, GLenum programInterface,
 
    case GL_VERTEX_SUBROUTINE_UNIFORM:
    case GL_FRAGMENT_SUBROUTINE_UNIFORM:
-      if (!_mesa_has_shader_subroutine(ctx))
+      if (!_mesa_has_ARB_shader_subroutine(ctx))
          goto fail;
       break;
    case GL_GEOMETRY_SUBROUTINE_UNIFORM:
-      if (!_mesa_has_geometry_shaders(ctx) || !_mesa_has_shader_subroutine(ctx))
+      if (!_mesa_has_geometry_shaders(ctx) || !_mesa_has_ARB_shader_subroutine(ctx))
          goto fail;
       break;
    case GL_COMPUTE_SUBROUTINE_UNIFORM:
-      if (!_mesa_has_compute_shaders(ctx) || !_mesa_has_shader_subroutine(ctx))
+      if (!_mesa_has_compute_shaders(ctx) || !_mesa_has_ARB_shader_subroutine(ctx))
          goto fail;
       break;
    case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
    case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
-      if (!_mesa_has_tessellation(ctx) || !_mesa_has_shader_subroutine(ctx))
+      if (!_mesa_has_tessellation(ctx) || !_mesa_has_ARB_shader_subroutine(ctx))
          goto fail;
       break;
    default:
diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index d969955..4ebc39f 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -2344,7 +2344,7 @@ _mesa_GetSubroutineUniformLocation(GLuint program, GLenum shadertype,
    GLenum resource_type;
    gl_shader_stage stage;
 
-   if (!_mesa_has_shader_subroutine(ctx)) {
+   if (!_mesa_has_ARB_shader_subroutine(ctx)) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
       return -1;
    }
@@ -2379,7 +2379,7 @@ _mesa_GetSubroutineIndex(GLuint program, GLenum shadertype,
    GLenum resource_type;
    gl_shader_stage stage;
 
-   if (!_mesa_has_shader_subroutine(ctx)) {
+   if (!_mesa_has_ARB_shader_subroutine(ctx)) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
       return -1;
    }
@@ -2423,7 +2423,7 @@ _mesa_GetActiveSubroutineUniformiv(GLuint program, GLenum shadertype,
    GLenum resource_type;
    int count, i, j;
 
-   if (!_mesa_has_shader_subroutine(ctx)) {
+   if (!_mesa_has_ARB_shader_subroutine(ctx)) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
       return;
    }
@@ -2509,7 +2509,7 @@ _mesa_GetActiveSubroutineUniformName(GLuint program, GLenum shadertype,
    GLenum resource_type;
    gl_shader_stage stage;
 
-   if (!_mesa_has_shader_subroutine(ctx)) {
+   if (!_mesa_has_ARB_shader_subroutine(ctx)) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
       return;
    }
@@ -2548,7 +2548,7 @@ _mesa_GetActiveSubroutineName(GLuint program, GLenum shadertype,
    GLenum resource_type;
    gl_shader_stage stage;
 
-   if (!_mesa_has_shader_subroutine(ctx)) {
+   if (!_mesa_has_ARB_shader_subroutine(ctx)) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
       return;
    }
@@ -2584,7 +2584,7 @@ _mesa_UniformSubroutinesuiv(GLenum shadertype, GLsizei count,
    gl_shader_stage stage;
    int i;
 
-   if (!_mesa_has_shader_subroutine(ctx)) {
+   if (!_mesa_has_ARB_shader_subroutine(ctx)) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
       return;
    }
@@ -2667,7 +2667,7 @@ _mesa_GetUniformSubroutineuiv(GLenum shadertype, GLint location,
    struct gl_linked_shader *sh;
    gl_shader_stage stage;
 
-   if (!_mesa_has_shader_subroutine(ctx)) {
+   if (!_mesa_has_ARB_shader_subroutine(ctx)) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
       return;
    }
@@ -2709,7 +2709,7 @@ _mesa_GetProgramStageiv(GLuint program, GLenum shadertype,
    struct gl_linked_shader *sh;
    gl_shader_stage stage;
 
-   if (!_mesa_has_shader_subroutine(ctx)) {
+   if (!_mesa_has_ARB_shader_subroutine(ctx)) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
       return;
    }