eden-emu/eden
14
3
Fork 4
Code Issues 3 Pull requests 4 Projects Releases 2 Packages Wiki Activity Actions

gl_shader_decompiler: Implement gl_ViewportIndex and gl_Layer in vertex shaders

Browse source 
This commit implements gl_ViewportIndex and gl_Layer in vertex and
geometry shaders. In the case it's used in a vertex shader, it requires
ARB_shader_viewport_layer_array. This extension is available on AMD and
Nvidia devices (mesa and proprietary drivers), but not available on
Intel on any platform. At the moment of writing this description I don't
know if this is a hardware limitation or a driver limitation.

In the case that ARB_shader_viewport_layer_array is not available,
writes to these registers on a vertex shader are ignored, with the
appropriate logging.
This commit is contained in:
ReinUsesLisp 2019-07-07 20:36:42 -03:00
parent 8afed6aae6
commit a650406899
10 changed files with 136 additions and 40 deletions
Download patch file Download diff file Expand all files Collapse all files

16
src/video_core/shader/shader_ir.cpp
View file

@ -89,6 +89,22 @@ Node ShaderIR::GetPhysicalInputAttribute(Tegra::Shader::Register physical_addres
}
Node ShaderIR::GetOutputAttribute(Attribute::Index index, u64 element, Node buffer) {
if (index == Attribute::Index::LayerViewportPointSize) {
switch (element) {
case 0:
UNIMPLEMENTED();
break;
case 1:
uses_layer = true;
break;
case 2:
uses_viewport_index = true;
break;
case 3:
uses_point_size = true;
break;
}
}
if (index == Attribute::Index::ClipDistances0123 ||
index == Attribute::Index::ClipDistances4567) {
const auto clip_index =