Signed-off-by: Henri Verbeet hverbeet@codeweavers.com --- Like the SPIR-V equivalent, I'm unable to reproduce the issue myself, but the patch is reported as working by Matteo.
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 1fea6f92be0..6ce9178c561 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) { @@ -3273,6 +3277,9 @@ 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: @@ -3316,6 +3323,13 @@ 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;