[try 3] wined3d: Implement support for projective textures in ps 2.0 and later

[Fabian Bieler]

-------------- next part --------------
From 74bf24f2748b38140575aeeff298c7698abb529f Mon Sep 17 00:00:00 2001
From: Fabian Bieler <der.fabe at gmx.net>
Date: Thu, 29 Mar 2007 18:44:57 +0200
Subject: [PATCH] wined3d: Implement support for projective textures in ps 2.0 and later

---
 dlls/wined3d/baseshader.c            |    3 +++
 dlls/wined3d/glsl_shader.c           |    9 +++++++--
 dlls/wined3d/wined3d_private_types.h |    3 +++
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/dlls/wined3d/baseshader.c b/dlls/wined3d/baseshader.c
index 3446570..f4230d7 100644
--- a/dlls/wined3d/baseshader.c
+++ b/dlls/wined3d/baseshader.c
@@ -941,6 +941,9 @@ void shader_trace_init(
                             default:
                                 TRACE("_(%u)", op);
                         }
+                    } else if (curOpcode->opcode == WINED3DSIO_TEX &&
+                               This->baseShader.hex_version >= WINED3DPS_VERSION(2,0)) {
+                        if(opcode_token & WINED3DSI_TEXLD_PROJECT) TRACE("p");
                     }
 
                     /* Destination token */
diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
index 2508eaa..707c325 100644
--- a/dlls/wined3d/glsl_shader.c
+++ b/dlls/wined3d/glsl_shader.c
@@ -1472,8 +1472,13 @@ void pshader_glsl_tex(SHADER_OPCODE_ARG* arg) {
         }
     } else {
         sampler_idx = arg->src[1] & WINED3DSP_REGNUM_MASK;
-        /* TODO: Handle D3DSI_TEXLD_PROJECTED... */
-        projected = FALSE;
+        if(arg->opcode_token & WINED3DSI_TEXLD_PROJECT) {
+                /* ps 2.0 texldp instruction always divides by the fourth component. */
+                projected = TRUE;
+                mask = WINED3DSP_WRITEMASK_3;
+        } else {
+            projected = FALSE;
+        }
     }
 
     sampler_type = arg->reg_maps->samplers[sampler_idx] & WINED3DSP_TEXTURETYPE_MASK;
diff --git a/dlls/wined3d/wined3d_private_types.h b/dlls/wined3d/wined3d_private_types.h
index 01f5d26..3550910 100644
--- a/dlls/wined3d/wined3d_private_types.h
+++ b/dlls/wined3d/wined3d_private_types.h
@@ -291,6 +291,9 @@ typedef enum _WINED3DSHADER_INSTRUCTION_OPCODE_TYPE {
 
 #define WINED3DSHADER_INSTRUCTION_PREDICATED (1 << 28)
 
+/* Undocumented opcode control to identify projective texture lookups in ps 2.0 and later */
+#define WINED3DSI_TEXLD_PROJECT 0x00010000
+
 /** Shader version tokens, and shader end tokens **/
 
 #define WINED3DPS_VERSION(major, minor) (0xFFFF0000 | ((major) << 8) | (minor))
-- 
1.4.4.1