Stefan Dösinger : wined3d: Don' t emulate clipplanes with ffp vp and fix a wrong if condition.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 85af0b2943825cf63666bc9a3eae214ca9a9cff0
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=85af0b2943825cf63666bc9a3e...

Author: Stefan Dösinger 
Date:   Mon Jun 22 16:25:37 2009 +0200

wined3d: Don't emulate clipplanes with ffp vp and fix a wrong if condition.

b2f09fd20421d0a5e179b42332ca63bc5ac17d8a accidentally got the
device->vs_clipping check wrong. The FFP replacement should emulate
clipping if GL can't do this natively with vertex shaders, not the
other way. Also don't emulate clipping if we're using fixed function
vertex processing because (a) clipping is always supported by GL in
this case, and (b), fragment.texcoord[7] is undefined. (Or in the
worst case set to something bad by the app).

---

dlls/wined3d/arb_program_shader.c |    3 +--
 dlls/wined3d/utils.c              |   15 +++++++++++----
 dlls/wined3d/wined3d_private.h    |    5 +++--
 3 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/dlls/wined3d/arb_program_shader.c b/dlls/wined3d/arb_program_shader.c
index 710cf68..0e6b307 100644
--- a/dlls/wined3d/arb_program_shader.c
+++ b/dlls/wined3d/arb_program_shader.c
@@ -5151,7 +5151,6 @@ static GLuint gen_arbfp_ffp_shader(const struct ffp_frag_settings *settings, IWi
     BOOL tempreg_used = FALSE, tfactor_used = FALSE;
     BOOL op_equal;
     const char *final_combiner_src = "ret";
-    IWineD3DDeviceImpl *device = stateblock->wineD3DDevice;

/* Find out which textures are read */
     for(stage = 0; stage < MAX_TEXTURES; stage++) {
@@ -5242,7 +5241,7 @@ static GLuint gen_arbfp_ffp_shader(const struct ffp_frag_settings *settings, IWi
                        srgb_sub_high, 0.0, 0.0, 0.0);
     }

-    if(ffp_clip_emul(stateblock) && device->vs_clipping) shader_addline(&buffer, "KIL fragment.texcoord[7];\n");
+    if(ffp_clip_emul(stateblock) && settings->emul_clipplanes) shader_addline(&buffer, "KIL fragment.texcoord[7];\n");

/* Generate texture sampling instructions) */
     for(stage = 0; stage < MAX_TEXTURES && settings->op[stage].cop != WINED3DTOP_DISABLE; stage++) {
diff --git a/dlls/wined3d/utils.c b/dlls/wined3d/utils.c
index 82d5527..b501bba 100644
--- a/dlls/wined3d/utils.c
+++ b/dlls/wined3d/utils.c
@@ -2091,6 +2091,7 @@ void gen_ffp_frag_op(IWineD3DStateBlockImpl *stateblock, struct ffp_frag_setting
     unsigned int i;
     DWORD ttff;
     DWORD cop, aop, carg0, carg1, carg2, aarg0, aarg1, aarg2;
+    IWineD3DDeviceImpl *device = stateblock->wineD3DDevice;

for(i = 0; i < GL_LIMITS(texture_stages); i++) {
         IWineD3DBaseTextureImpl *texture;
@@ -2144,8 +2145,7 @@ void gen_ffp_frag_op(IWineD3DStateBlockImpl *stateblock, struct ffp_frag_setting
         carg2 = (args[cop] & ARG2) ? stateblock->textureState[i][WINED3DTSS_COLORARG2] : ARG_UNUSED;
         carg0 = (args[cop] & ARG0) ? stateblock->textureState[i][WINED3DTSS_COLORARG0] : ARG_UNUSED;

-        if(is_invalid_op(stateblock->wineD3DDevice, i, cop,
-                         carg1, carg2, carg0)) {
+        if(is_invalid_op(device, i, cop, carg1, carg2, carg0)) {
             carg0 = ARG_UNUSED;
             carg2 = ARG_UNUSED;
             carg1 = WINED3DTA_CURRENT;
@@ -2204,8 +2204,7 @@ void gen_ffp_frag_op(IWineD3DStateBlockImpl *stateblock, struct ffp_frag_setting
             }
         }

-        if(is_invalid_op(stateblock->wineD3DDevice, i, aop,
-           aarg1, aarg2, aarg0)) {
+        if(is_invalid_op(device, i, aop, aarg1, aarg2, aarg0)) {
                aarg0 = ARG_UNUSED;
                aarg2 = ARG_UNUSED;
                aarg1 = WINED3DTA_CURRENT;
@@ -2284,6 +2283,14 @@ void gen_ffp_frag_op(IWineD3DStateBlockImpl *stateblock, struct ffp_frag_setting
     } else {
         settings->sRGB_write = 0;
     }
+    if(device->vs_clipping || !use_vs(stateblock)) {
+        /* No need to emulate clipplanes if GL supports native vertex shader clipping or if
+         * the fixed function vertex pipeline is used(which always supports clipplanes)
+         */
+        settings->emul_clipplanes = 0;
+    } else {
+        settings->emul_clipplanes = 1;
+    }
 }
 #undef GLINFO_LOCATION

diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index 3bbddd8..afef4af 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -1378,8 +1378,9 @@ struct texture_stage_op
 struct ffp_frag_settings {
     struct texture_stage_op     op[MAX_TEXTURES];
     enum fogmode fog;
-    /* Use an int instead of a char to get dword alignment */
-    unsigned int sRGB_write;
+    /* Use shorts instead of chars to get dword alignment */
+    unsigned short sRGB_write;
+    unsigned short emul_clipplanes;
 };

struct ffp_frag_desc