mesa: add depth_func() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

2 files changed, 31 insertions, 22 deletions

diff --git a/src/mesa/main/depth.c b/src/mesa/main/depth.c
index 1ea7d1af5c0..4bc000fd138 100644
--- a/src/mesa/main/depth.c
+++ b/src/mesa/main/depth.c
@@ -57,30 +57,27 @@ _mesa_ClearDepthf( GLclampf depth )
 }
 
 
-void GLAPIENTRY
-_mesa_DepthFunc( GLenum func )
+static ALWAYS_INLINE void
+depth_func(struct gl_context *ctx, GLenum func, bool no_error)
 {
-   GET_CURRENT_CONTEXT(ctx);
-
-   if (MESA_VERBOSE & VERBOSE_API)
-      _mesa_debug(ctx, "glDepthFunc %s\n", _mesa_enum_to_string(func));
-
    if (ctx->Depth.Func == func)
       return;
 
-   switch (func) {
-   case GL_LESS:    /* (default) pass if incoming z < stored z */
-   case GL_GEQUAL:
-   case GL_LEQUAL:
-   case GL_GREATER:
-   case GL_NOTEQUAL:
-   case GL_EQUAL:
-   case GL_ALWAYS:
-   case GL_NEVER:
-      break;
-   default:
-      _mesa_error( ctx, GL_INVALID_ENUM, "glDepth.Func" );
-      return;
+   if (!no_error) {
+      switch (func) {
+      case GL_LESS:    /* (default) pass if incoming z < stored z */
+      case GL_GEQUAL:
+      case GL_LEQUAL:
+      case GL_GREATER:
+      case GL_NOTEQUAL:
+      case GL_EQUAL:
+      case GL_ALWAYS:
+      case GL_NEVER:
+         break;
+      default:
+         _mesa_error(ctx, GL_INVALID_ENUM, "glDepth.Func");
+         return;
+      }
    }
 
    FLUSH_VERTICES(ctx, ctx->DriverFlags.NewDepth ? 0 : _NEW_DEPTH);
@@ -88,7 +85,19 @@ _mesa_DepthFunc( GLenum func )
    ctx->Depth.Func = func;
 
    if (ctx->Driver.DepthFunc)
-      ctx->Driver.DepthFunc( ctx, func );
+      ctx->Driver.DepthFunc(ctx, func);
+}
+
+
+void GLAPIENTRY
+_mesa_DepthFunc(GLenum func)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glDepthFunc %s\n", _mesa_enum_to_string(func));
+
+   depth_func(ctx, func, false);
 }
 
 
diff --git a/src/mesa/main/depth.h b/src/mesa/main/depth.h
index 5ff7a5e9e54..5760951c853 100644
--- a/src/mesa/main/depth.h
+++ b/src/mesa/main/depth.h
@@ -44,7 +44,7 @@ extern void GLAPIENTRY
 _mesa_ClearDepthf( GLclampf depth );
 
 extern void GLAPIENTRY
-_mesa_DepthFunc( GLenum func );
+_mesa_DepthFunc(GLenum func);
 
 extern void GLAPIENTRY
 _mesa_DepthMask( GLboolean flag );