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Merge pull request #1909 from heapo/shadow_sampling_fixes

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Fix arrayed texture LOD selection and depth comparison ordering
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bunnei 2018-12-19 13:10:37 -05:00 committed by GitHub
commit 3050f3a7ba
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 14 additions and 16 deletions
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30
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -1591,23 +1591,21 @@ private:
process_mode == Tegra::Shader::TextureProcessMode::LL ||
process_mode == Tegra::Shader::TextureProcessMode::LLA;
// LOD selection (either via bias or explicit textureLod) not supported in GL for
// sampler2DArrayShadow and samplerCubeArrayShadow.
const bool gl_lod_supported = !(
(texture_type == Tegra::Shader::TextureType::Texture2D && is_array && depth_compare) ||
(texture_type == Tegra::Shader::TextureType::TextureCube && !is_array &&
depth_compare));
(texture_type == Tegra::Shader::TextureType::TextureCube && is_array && depth_compare));
const std::string read_method = lod_needed && gl_lod_supported ? "textureLod(" : "texture(";
std::string texture = read_method + sampler + ", coord";
if (process_mode != Tegra::Shader::TextureProcessMode::None) {
UNIMPLEMENTED_IF(process_mode != Tegra::Shader::TextureProcessMode::None &&
!gl_lod_supported);
if (process_mode != Tegra::Shader::TextureProcessMode::None && gl_lod_supported) {
if (process_mode == Tegra::Shader::TextureProcessMode::LZ) {
if (gl_lod_supported) {
texture += ", 0";
} else {
// Lod 0 is emulated by a big negative bias
// in scenarios that are not supported by glsl
texture += ", -1000";
}
texture += ", 0.0";
} else {
// If present, lod or bias are always stored in the register indexed by the
// gpr20
@ -1645,15 +1643,15 @@ private:
if (depth_compare && !is_array && texture_type == Tegra::Shader::TextureType::Texture1D) {
coord += ",0.0";
}
if (is_array) {
coord += ',' + regs.GetRegisterAsInteger(array_register);
}
if (depth_compare) {
// Depth is always stored in the register signaled by gpr20
// or in the next register if lod or bias are used
const u64 depth_register = instr.gpr20.Value() + (lod_bias_enabled ? 1 : 0);
coord += ',' + regs.GetRegisterAsFloat(depth_register);
}
if (is_array) {
coord += ',' + regs.GetRegisterAsInteger(array_register);
}
coord += ");";
return std::make_pair(
coord, GetTextureCode(instr, texture_type, process_mode, depth_compare, is_array, 0));
@ -1686,15 +1684,15 @@ private:
}
}
if (is_array) {
coord += ',' + regs.GetRegisterAsInteger(array_register);
}
if (depth_compare) {
// Depth is always stored in the register signaled by gpr20
// or in the next register if lod or bias are used
const u64 depth_register = instr.gpr20.Value() + (lod_bias_enabled ? 1 : 0);
coord += ',' + regs.GetRegisterAsFloat(depth_register);
}
if (is_array) {
coord += ',' + regs.GetRegisterAsInteger(array_register);
}
coord += ");";
return std::make_pair(coord,