Henri Verbeet : wined3d: Implement the "precise" flag in the GLSL shader backend.
Alexandre Julliard
julliard at winehq.org
Mon Jun 7 15:02:03 CDT 2021
Module: wine
Branch: stable
Commit: 15f4d9c60e1ce111220951b6489368b3438fa8a0
URL: https://source.winehq.org/git/wine.git/?a=commit;h=15f4d9c60e1ce111220951b6489368b3438fa8a0
Author: Henri Verbeet <hverbeet at codeweavers.com>
Date: Tue Jan 19 14:34:53 2021 +0100
wined3d: Implement the "precise" flag in the GLSL shader backend.
Signed-off-by: Henri Verbeet <hverbeet at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
(cherry picked from commit 7a54209d4bb5df18ac8fcdf26d8aa73e770403c4)
Signed-off-by: Michael Stefaniuc <mstefani at winehq.org>
---
dlls/wined3d/glsl_shader.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
index 7423b2003a6..b3bbd6f9f7f 100644
--- a/dlls/wined3d/glsl_shader.c
+++ b/dlls/wined3d/glsl_shader.c
@@ -2540,6 +2540,10 @@ static void shader_generate_glsl_declarations(const struct wined3d_context_gl *c
/* Temporary variables for matrix operations */
shader_addline(buffer, "vec4 tmp0;\n");
shader_addline(buffer, "vec4 tmp1;\n");
+ if (gl_info->supported[ARB_GPU_SHADER5])
+ shader_addline(buffer, "precise vec4 tmp_precise;\n");
+ else
+ shader_addline(buffer, "/* precise */ vec4 tmp_precise;\n");
if (!shader->load_local_constsF)
{
@@ -3268,6 +3272,9 @@ static DWORD shader_glsl_append_dst_ext(struct wined3d_string_buffer *buffer,
if ((mask = shader_glsl_add_dst_param(ins, dst, &glsl_dst)))
{
+ if (ins->flags & WINED3DSI_PRECISE_XYZW)
+ sprintf(glsl_dst.reg_name, "tmp_precise");
+
switch (data_type)
{
case WINED3D_DATA_FLOAT:
@@ -3309,6 +3316,13 @@ static void shader_glsl_add_instruction_modifiers(const struct wined3d_shader_in
if (!ins->dst_count) return;
+ if (ins->flags & WINED3DSI_PRECISE_XYZW)
+ {
+ shader_glsl_add_dst_param(ins, &ins->dst[0], &dst_param);
+ shader_addline(ins->ctx->buffer, "%s%s = tmp_precise%s;\n",
+ dst_param.reg_name, dst_param.mask_str, dst_param.mask_str);
+ }
+
modifiers = ins->dst[0].modifiers;
if (!modifiers) return;
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