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D3D / VideoCommon: generate HLSL from SPIRV

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This commit is contained in:
iwubcode
2022-05-04 00:41:34 -05:00
parent 3790c99a7d
commit 5dd2704416
20 changed files with 780 additions and 1121 deletions
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113
Source/Core/VideoCommon/ShaderGenCommon.cpp
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@ -93,20 +93,7 @@ std::string GetDiskShaderCacheFileName(APIType api_type, const char* type, bool
void WriteIsNanHeader(ShaderCode& out, APIType api_type)
{
if (api_type == APIType::D3D)
{
out.Write("bool dolphin_isnan(float f) {{\n"
" // Workaround for the HLSL compiler deciding that isnan can never be true and\n"
" // optimising away the call, even though the value can actually be NaN\n"
" // Just look for the bit pattern that indicates NaN instead\n"
" return (asint(f) & 0x7FFFFFFF) > 0x7F800000;\n"
"}}\n\n");
// If isfinite is needed, (asint(f) & 0x7F800000) != 0x7F800000 can be used
}
else
{
out.Write("#define dolphin_isnan(f) isnan(f)\n");
}
out.Write("#define dolphin_isnan(f) isnan(f)\n");
}
void WriteBitfieldExtractHeader(ShaderCode& out, APIType api_type,
@ -135,14 +122,15 @@ void WriteBitfieldExtractHeader(ShaderCode& out, APIType api_type,
static void DefineOutputMember(ShaderCode& object, APIType api_type, std::string_view qualifier,
std::string_view type, std::string_view name, int var_index,
std::string_view semantic = {}, int semantic_index = -1)
ShaderStage stage, std::string_view semantic = {},
int semantic_index = -1)
{
object.Write("\t{} {} {}", qualifier, type, name);
if (var_index != -1)
object.Write("{}", var_index);
if (api_type == APIType::D3D && !semantic.empty())
if (api_type == APIType::D3D && !semantic.empty() && stage == ShaderStage::Geometry)
{
if (semantic_index != -1)
object.Write(" : {}{}", semantic, semantic_index);
@ -154,30 +142,83 @@ static void DefineOutputMember(ShaderCode& object, APIType api_type, std::string
}
void GenerateVSOutputMembers(ShaderCode& object, APIType api_type, u32 texgens,
const ShaderHostConfig& host_config, std::string_view qualifier)
const ShaderHostConfig& host_config, std::string_view qualifier,
ShaderStage stage)
{
DefineOutputMember(object, api_type, qualifier, "float4", "pos", -1, "SV_Position");
DefineOutputMember(object, api_type, qualifier, "float4", "colors_", 0, "COLOR", 0);
DefineOutputMember(object, api_type, qualifier, "float4", "colors_", 1, "COLOR", 1);
for (unsigned int i = 0; i < texgens; ++i)
DefineOutputMember(object, api_type, qualifier, "float3", "tex", i, "TEXCOORD", i);
if (!host_config.fast_depth_calc)
DefineOutputMember(object, api_type, qualifier, "float4", "clipPos", -1, "TEXCOORD", texgens);
if (host_config.per_pixel_lighting)
// SPIRV-Cross names all semantics as "TEXCOORD"
// Unfortunately Geometry shaders (which also uses this function)
// aren't supported. The output semantic name needs to match
// up with the input semantic name for both the next stage (pixel shader)
// and the previous stage (vertex shader), so
// we need to handle geometry in a special way...
if (api_type == APIType::D3D && stage == ShaderStage::Geometry)
{
DefineOutputMember(object, api_type, qualifier, "float3", "Normal", -1, "TEXCOORD",
texgens + 1);
DefineOutputMember(object, api_type, qualifier, "float3", "WorldPos", -1, "TEXCOORD",
texgens + 2);
DefineOutputMember(object, api_type, qualifier, "float4", "pos", -1, stage, "TEXCOORD", 0);
DefineOutputMember(object, api_type, qualifier, "float4", "colors_", 0, stage, "TEXCOORD", 1);
DefineOutputMember(object, api_type, qualifier, "float4", "colors_", 1, stage, "TEXCOORD", 2);
const unsigned int index_base = 3;
unsigned int index_offset = 0;
if (host_config.backend_geometry_shaders)
{
DefineOutputMember(object, api_type, qualifier, "float", "clipDist", 0, stage, "TEXCOORD",
index_base + index_offset);
DefineOutputMember(object, api_type, qualifier, "float", "clipDist", 1, stage, "TEXCOORD",
index_base + index_offset + 1);
index_offset += 2;
}
for (unsigned int i = 0; i < texgens; ++i)
{
DefineOutputMember(object, api_type, qualifier, "float3", "tex", i, stage, "TEXCOORD",
index_base + index_offset + i);
}
index_offset += texgens;
if (!host_config.fast_depth_calc)
{
DefineOutputMember(object, api_type, qualifier, "float4", "clipPos", -1, stage, "TEXCOORD",
index_base + index_offset);
index_offset++;
}
if (host_config.per_pixel_lighting)
{
DefineOutputMember(object, api_type, qualifier, "float3", "Normal", -1, stage, "TEXCOORD",
index_base + index_offset);
DefineOutputMember(object, api_type, qualifier, "float3", "WorldPos", -1, stage, "TEXCOORD",
index_base + index_offset + 1);
index_offset += 2;
}
}
if (host_config.backend_geometry_shaders)
else
{
DefineOutputMember(object, api_type, qualifier, "float", "clipDist", 0, "SV_ClipDistance", 0);
DefineOutputMember(object, api_type, qualifier, "float", "clipDist", 1, "SV_ClipDistance", 1);
DefineOutputMember(object, api_type, qualifier, "float4", "pos", -1, stage, "SV_Position");
DefineOutputMember(object, api_type, qualifier, "float4", "colors_", 0, stage, "COLOR", 0);
DefineOutputMember(object, api_type, qualifier, "float4", "colors_", 1, stage, "COLOR", 1);
if (host_config.backend_geometry_shaders)
{
DefineOutputMember(object, api_type, qualifier, "float", "clipDist", 0, stage,
"SV_ClipDistance", 0);
DefineOutputMember(object, api_type, qualifier, "float", "clipDist", 1, stage,
"SV_ClipDistance", 1);
}
for (unsigned int i = 0; i < texgens; ++i)
DefineOutputMember(object, api_type, qualifier, "float3", "tex", i, stage, "TEXCOORD", i);
if (!host_config.fast_depth_calc)
DefineOutputMember(object, api_type, qualifier, "float4", "clipPos", -1, stage, "TEXCOORD",
texgens);
if (host_config.per_pixel_lighting)
{
DefineOutputMember(object, api_type, qualifier, "float3", "Normal", -1, stage, "TEXCOORD",
texgens + 1);
DefineOutputMember(object, api_type, qualifier, "float3", "WorldPos", -1, stage, "TEXCOORD",
texgens + 2);
}
}
}