Module: wine
Branch: master
Commit: c9227bccc5a1bf94fbf5bf335fae7f4b16c888ed
URL: http://source.winehq.org/git/wine.git/?a=commit;h=c9227bccc5a1bf94fbf5bf335…
Author: Henri Verbeet <hverbeet(a)codeweavers.com>
Date: Mon Jun 15 14:07:33 2015 +0200
wined3d: Implement SM4 discard in the GLSL shader backend.
---
dlls/wined3d/glsl_shader.c | 35 +++++++++++++++++++++--------------
1 file changed, 21 insertions(+), 14 deletions(-)
diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
index f69a2ce..fa96fbe 100644
--- a/dlls/wined3d/glsl_shader.c
+++ b/dlls/wined3d/glsl_shader.c
@@ -4704,22 +4704,29 @@ static void shader_glsl_texreg2rgb(const struct wined3d_shader_instruction *ins)
* If any of the first 3 components are < 0, discard this pixel */
static void shader_glsl_texkill(const struct wined3d_shader_instruction *ins)
{
- struct glsl_dst_param dst_param;
+ if (ins->ctx->reg_maps->shader_version.major >= 4)
+ {
+ struct glsl_src_param src_param;
- /* The argument is a destination parameter, and no writemasks are allowed */
- shader_glsl_add_dst_param(ins, &ins->dst[0], &dst_param);
- if (ins->ctx->reg_maps->shader_version.major >= 2)
+ shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_0, &src_param);
+ shader_addline(ins->ctx->buffer, "if (bool(floatBitsToUint(%s))) discard;\n", src_param.param_str);
+ }
+ else
{
- if (ins->ctx->reg_maps->shader_version.major >= 4)
- FIXME("SM4 discard not implemented.\n");
- /* 2.0 shaders compare all 4 components in texkill */
- shader_addline(ins->ctx->buffer, "if (any(lessThan(%s.xyzw, vec4(0.0)))) discard;\n", dst_param.reg_name);
- } else {
- /* 1.X shaders only compare the first 3 components, probably due to the nature of the texkill
- * instruction as a tex* instruction, and phase, which kills all a / w components. Even if all
- * 4 components are defined, only the first 3 are used
- */
- shader_addline(ins->ctx->buffer, "if (any(lessThan(%s.xyz, vec3(0.0)))) discard;\n", dst_param.reg_name);
+ struct glsl_dst_param dst_param;
+
+ /* The argument is a destination parameter, and no writemasks are allowed */
+ shader_glsl_add_dst_param(ins, &ins->dst[0], &dst_param);
+
+ /* 2.0 shaders compare all 4 components in texkill. */
+ if (ins->ctx->reg_maps->shader_version.major >= 2)
+ shader_addline(ins->ctx->buffer, "if (any(lessThan(%s.xyzw, vec4(0.0)))) discard;\n", dst_param.reg_name);
+ /* 1.x shaders only compare the first 3 components, probably due to
+ * the nature of the texkill instruction as a tex* instruction, and
+ * phase, which kills all .w components. Even if all 4 components are
+ * defined, only the first 3 are used. */
+ else
+ shader_addline(ins->ctx->buffer, "if (any(lessThan(%s.xyz, vec3(0.0)))) discard;\n", dst_param.reg_name);
}
}