From c5c713721285282c1ed466d287435a88b7b533ad Mon Sep 17 00:00:00 2001
From: =?utf8?q?Stefan=20D=C3=B6singer?= <stefan@codeweavers.com>
Date: Thu, 9 Apr 2015 22:48:17 +0200
Subject: [PATCH] wined3d: Simplify alpha test and color keying in GLSL.

---
 dlls/wined3d/glsl_shader.c | 35 +++++++++++++++++++++++++++++++++--
 dlls/wined3d/state.c       |  3 ---
 2 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
index c67243f27bb..1a1b6b01fc4 100644
--- a/dlls/wined3d/glsl_shader.c
+++ b/dlls/wined3d/glsl_shader.c
@@ -7572,6 +7572,37 @@ static void glsl_fragment_pipe_invalidate_constants(struct wined3d_context *cont
     context->constant_update_mask |= WINED3D_SHADER_CONST_FFP_PS;
 }
 
+static void glsl_fragment_pipe_alpha_test(struct wined3d_context *context,
+        const struct wined3d_state *state, DWORD state_id)
+{
+    const struct wined3d_gl_info *gl_info = context->gl_info;
+    int glParm;
+    float ref;
+
+    TRACE("context %p, state %p, state_id %#x.\n", context, state, state_id);
+
+    if (state->render_states[WINED3D_RS_ALPHATESTENABLE])
+    {
+        gl_info->gl_ops.gl.p_glEnable(GL_ALPHA_TEST);
+        checkGLcall("glEnable GL_ALPHA_TEST");
+    }
+    else
+    {
+        gl_info->gl_ops.gl.p_glDisable(GL_ALPHA_TEST);
+        checkGLcall("glDisable GL_ALPHA_TEST");
+        return;
+    }
+
+    ref = ((float)state->render_states[WINED3D_RS_ALPHAREF]) / 255.0f;
+    glParm = wined3d_gl_compare_func(state->render_states[WINED3D_RS_ALPHAFUNC]);
+
+    if (glParm)
+    {
+        gl_info->gl_ops.gl.p_glAlphaFunc(glParm, ref);
+        checkGLcall("glAlphaFunc");
+    }
+}
+
 static const struct StateEntryTemplate glsl_fragment_pipe_state_template[] =
 {
     {STATE_VDECL,                                               {STATE_VDECL,                                                glsl_fragment_pipe_vdecl               }, WINED3D_GL_EXT_NONE },
@@ -7651,8 +7682,8 @@ static const struct StateEntryTemplate glsl_fragment_pipe_state_template[] =
     {STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),                   {STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),                    glsl_fragment_pipe_shader              }, WINED3D_GL_EXT_NONE },
     {STATE_RENDER(WINED3D_RS_ALPHAFUNC),                        {STATE_RENDER(WINED3D_RS_ALPHATESTENABLE),                   NULL                                   }, WINED3D_GL_EXT_NONE },
     {STATE_RENDER(WINED3D_RS_ALPHAREF),                         {STATE_RENDER(WINED3D_RS_ALPHATESTENABLE),                   NULL                                   }, WINED3D_GL_EXT_NONE },
-    {STATE_RENDER(WINED3D_RS_ALPHATESTENABLE),                  {STATE_RENDER(WINED3D_RS_ALPHATESTENABLE),                   state_alpha_test                       }, WINED3D_GL_EXT_NONE },
-    {STATE_RENDER(WINED3D_RS_COLORKEYENABLE),                   {STATE_RENDER(WINED3D_RS_ALPHATESTENABLE),                   NULL                                   }, WINED3D_GL_EXT_NONE },
+    {STATE_RENDER(WINED3D_RS_ALPHATESTENABLE),                  {STATE_RENDER(WINED3D_RS_ALPHATESTENABLE),                   glsl_fragment_pipe_alpha_test          }, WINED3D_GL_EXT_NONE },
+    {STATE_RENDER(WINED3D_RS_COLORKEYENABLE),                   {STATE_SHADER(WINED3D_SHADER_TYPE_PIXEL),                    NULL                                   }, WINED3D_GL_EXT_NONE },
     {STATE_RENDER(WINED3D_RS_FOGENABLE),                        {STATE_RENDER(WINED3D_RS_FOGENABLE),                         glsl_fragment_pipe_fog                 }, WINED3D_GL_EXT_NONE },
     {STATE_RENDER(WINED3D_RS_FOGTABLEMODE),                     {STATE_RENDER(WINED3D_RS_FOGENABLE),                         NULL                                   }, WINED3D_GL_EXT_NONE },
     {STATE_RENDER(WINED3D_RS_FOGVERTEXMODE),                    {STATE_RENDER(WINED3D_RS_FOGENABLE),                         NULL                                   }, WINED3D_GL_EXT_NONE },
diff --git a/dlls/wined3d/state.c b/dlls/wined3d/state.c
index edf1e71a99f..b3ac4f178c5 100644
--- a/dlls/wined3d/state.c
+++ b/dlls/wined3d/state.c
@@ -528,9 +528,6 @@ void state_alpha_test(struct wined3d_context *context, const struct wined3d_stat
         context_apply_state(context, state, STATE_TEXTURESTAGE(0, WINED3D_TSS_ALPHA_OP));
     context->last_was_ckey = enable_ckey;
 
-    if (context->d3d_info->shader_color_key)
-        enable_ckey = FALSE;
-
     if (state->render_states[WINED3D_RS_ALPHATESTENABLE]
             || (state->render_states[WINED3D_RS_COLORKEYENABLE] && enable_ckey))
     {
-- 
2.11.4.GIT