Stefan Dösinger : wined3d: Get rid of the TMP register in fragment shaders.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e6cc81d287f5118a8133d5e2197568112414cd73
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=e6cc81d287f5118a8133d5e2197568112414cd73

Author: Stefan Dösinger <stefan at codeweavers.com>
Date:   Thu May  7 19:09:07 2009 +0200

wined3d: Get rid of the TMP register in fragment shaders.

To be able keep the temporary register in the type independent NRM
instruction, the vertex temporary register is renamed to TA to match
the name of a pixel shader register.

---

 dlls/wined3d/arb_program_shader.c |   23 +++++++++++------------
 1 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/dlls/wined3d/arb_program_shader.c b/dlls/wined3d/arb_program_shader.c
index b52f173..769d31b 100644
--- a/dlls/wined3d/arb_program_shader.c
+++ b/dlls/wined3d/arb_program_shader.c
@@ -1013,8 +1013,8 @@ static void shader_hw_mov(const struct wined3d_shader_instruction *ins)
         if (((IWineD3DVertexShaderImpl *)shader)->rel_offset)
         {
             shader_arb_get_src_param(ins, &ins->src[0], 0, src0_param);
-            shader_addline(buffer, "ADD TMP.x, %s, helper_const.z;\n", src0_param);
-            shader_addline(buffer, "ARL A0.x, TMP.x;\n");
+            shader_addline(buffer, "ADD TA.x, %s, helper_const.z;\n", src0_param);
+            shader_addline(buffer, "ARL A0.x, TA.x;\n");
         }
         else
         {
@@ -1605,11 +1605,11 @@ static void shader_hw_nrm(const struct wined3d_shader_instruction *ins)
     char src_name[50];
 
     shader_arb_get_dst_param(ins, &ins->dst[0], dst_name);
-    shader_arb_get_src_param(ins, &ins->src[0], 0, src_name);
-    shader_addline(buffer, "DP3 TMP, %s, %s;\n", src_name, src_name);
-    shader_addline(buffer, "RSQ TMP, TMP.x;\n");
+    shader_arb_get_src_param(ins, &ins->src[0], 1 /* Use TB */, src_name);
+    shader_addline(buffer, "DP3 TA, %s, %s;\n", src_name, src_name);
+    shader_addline(buffer, "RSQ TA, TA.x;\n");
     /* dst.w = src[0].w * 1 / (src.x^2 + src.y^2 + src.z^2)^(1/2) according to msdn*/
-    shader_addline(buffer, "MUL%s %s, %s, TMP;\n", shader_arb_get_modifier(ins), dst_name,
+    shader_addline(buffer, "MUL%s %s, %s, TA;\n", shader_arb_get_modifier(ins), dst_name,
                    src_name);
 }
 
@@ -1927,7 +1927,6 @@ static GLuint shader_arb_generate_pshader(IWineD3DPixelShader *iface,
         }
     }
 
-    shader_addline(buffer, "TEMP TMP;\n");     /* Used in matrix ops */
     shader_addline(buffer, "TEMP TA;\n");      /* Used for modifiers */
     shader_addline(buffer, "TEMP TB;\n");      /* Used for modifiers */
     shader_addline(buffer, "TEMP TC;\n");      /* Used for modifiers */
@@ -1954,7 +1953,7 @@ static GLuint shader_arb_generate_pshader(IWineD3DPixelShader *iface,
     shader_generate_main((IWineD3DBaseShader *)This, buffer, reg_maps, function);
 
     if(args->srgb_correction) {
-        arbfp_add_sRGB_correction(buffer, fragcolor, "TMP", "TA", "TB");
+        arbfp_add_sRGB_correction(buffer, fragcolor, "TA", "TB", "TC");
         shader_addline(buffer, "MOV result.color, %s;\n", fragcolor);
     } else if(reg_maps->shader_version.major < 2) {
         shader_addline(buffer, "MOV result.color, %s;\n", fragcolor);
@@ -2017,7 +2016,7 @@ static GLuint shader_arb_generate_vshader(IWineD3DVertexShader *iface,
         This->baseShader.limits.constant_float =
                 min(95, This->baseShader.limits.constant_float);
 
-    shader_addline(buffer, "TEMP TMP;\n");
+    shader_addline(buffer, "TEMP TA;\n");
 
     /* Base Declarations */
     shader_generate_arb_declarations( (IWineD3DBaseShader*) This, reg_maps, buffer, &GLINFO_LOCATION, lconst_map);
@@ -2072,9 +2071,9 @@ static GLuint shader_arb_generate_vshader(IWineD3DVertexShader *iface,
      * 1.0 or -1.0 to turn the rendering upside down for offscreen rendering. PosFixup.x
      * contains 1.0 to allow a mad, but arb vs swizzles are too restricted for that.
      */
-    shader_addline(buffer, "MUL TMP, posFixup, TMP_OUT.w;\n");
-    shader_addline(buffer, "ADD TMP_OUT.x, TMP_OUT.x, TMP.z;\n");
-    shader_addline(buffer, "MAD TMP_OUT.y, TMP_OUT.y, posFixup.y, TMP.w;\n");
+    shader_addline(buffer, "MUL TA, posFixup, TMP_OUT.w;\n");
+    shader_addline(buffer, "ADD TMP_OUT.x, TMP_OUT.x, TA.z;\n");
+    shader_addline(buffer, "MAD TMP_OUT.y, TMP_OUT.y, posFixup.y, TA.w;\n");
 
     /* Z coord [0;1]->[-1;1] mapping, see comment in transform_projection in state.c
      * and the glsl equivalent