ShaderGen: Support writing integer colors when logic op is enabled

This is required for D3D to support logic op.
This commit is contained in:
Stenzek 2017-09-03 16:32:37 +10:00
parent 3dd675e613
commit 0622979d3b
6 changed files with 68 additions and 19 deletions

View File

@ -10,6 +10,19 @@
// STATE_TO_SAVE
BPMemory bpmem;
bool BlendMode::UseLogicOp() const
{
// Logicop bit has lowest priority.
if (subtract || blendenable || !logicopenable)
return false;
// Fast path for Kirby's Return to Dreamland, they use it with dstAlpha.
if (logicmode == BlendMode::NOOP)
return false;
return true;
}
float FogParam0::GetA() const
{
// scale mantissa from 11 to 23 bits

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@ -648,6 +648,8 @@ union BlendMode
BitField<12, 4, LogicOp> logicmode;
u32 hex;
bool UseLogicOp() const;
};
union FogParam0

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@ -175,6 +175,7 @@ PixelShaderUid GetPixelShaderUid()
uid_data->rgba6_format =
bpmem.zcontrol.pixel_format == PEControl::RGBA6_Z24 && !g_ActiveConfig.bForceTrueColor;
uid_data->dither = bpmem.blendmode.dither && uid_data->rgba6_format;
uid_data->uint_output = bpmem.blendmode.UseLogicOp();
u32 numStages = uid_data->genMode_numtevstages + 1;
@ -434,7 +435,7 @@ static void SampleTexture(ShaderCode& out, const char* texcoords, const char* te
static void WriteAlphaTest(ShaderCode& out, const pixel_shader_uid_data* uid_data, APIType ApiType,
bool per_pixel_depth, bool use_dual_source);
static void WriteFog(ShaderCode& out, const pixel_shader_uid_data* uid_data);
static void WriteColor(ShaderCode& out, const pixel_shader_uid_data* uid_data,
static void WriteColor(ShaderCode& out, APIType api_type, const pixel_shader_uid_data* uid_data,
bool use_dual_source);
ShaderCode GeneratePixelShaderCode(APIType ApiType, const ShaderHostConfig& host_config,
@ -568,8 +569,12 @@ ShaderCode GeneratePixelShaderCode(APIType ApiType, const ShaderHostConfig& host
else // D3D
{
out.Write("void main(\n");
out.Write(" out float4 ocol0 : SV_Target0,\n"
" out float4 ocol1 : SV_Target1,\n%s"
if (uid_data->uint_output)
out.Write(" out uint4 ocol0 : SV_Target,\n");
else
out.Write(" out float4 ocol0 : SV_Target0,\n"
" out float4 ocol1 : SV_Target1,\n");
out.Write("%s"
" in float4 rawpos : SV_Position,\n",
uid_data->per_pixel_depth ? " out float depth : SV_Depth,\n" : "");
@ -778,7 +783,7 @@ ShaderCode GeneratePixelShaderCode(APIType ApiType, const ShaderHostConfig& host
WriteFog(out, uid_data);
// Write the color and alpha values to the framebuffer
WriteColor(out, uid_data, use_dual_source);
WriteColor(out, ApiType, uid_data, use_dual_source);
if (uid_data->bounding_box)
{
@ -1302,8 +1307,19 @@ static void WriteFog(ShaderCode& out, const pixel_shader_uid_data* uid_data)
out.Write("\tprev.rgb = (prev.rgb * (256 - ifog) + " I_FOGCOLOR ".rgb * ifog) >> 8;\n");
}
static void WriteColor(ShaderCode& out, const pixel_shader_uid_data* uid_data, bool use_dual_source)
static void WriteColor(ShaderCode& out, APIType api_type, const pixel_shader_uid_data* uid_data,
bool use_dual_source)
{
// D3D requires that the shader outputs be uint when writing to a uint render target for logic op.
if (api_type == APIType::D3D && uid_data->uint_output)
{
if (uid_data->rgba6_format)
out.Write("\tocol0 = uint4(prev & 0xFC);\n");
else
out.Write("\tocol0 = uint4(prev);\n");
return;
}
if (uid_data->rgba6_format)
out.Write("\tocol0.rgb = float3(prev.rgb >> 2) / 63.0;\n");
else

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@ -43,7 +43,8 @@ struct pixel_shader_uid_data
u32 numColorChans : 2;
u32 rgba6_format : 1;
u32 dither : 1;
u32 pad : 16;
u32 uint_output : 1;
u32 pad : 15;
u32 texMtxInfo_n_projection : 8; // 8x1 bit
u32 tevindref_bi0 : 3;

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@ -25,6 +25,7 @@ PixelShaderUid GetPixelShaderUid()
(bpmem.ztex2.op != ZTEXTURE_DISABLE && bpmem.UseLateDepthTest()) ||
(!g_ActiveConfig.bFastDepthCalc && bpmem.zmode.testenable && !uid_data->early_depth) ||
(bpmem.zmode.testenable && bpmem.genMode.zfreeze);
uid_data->uint_output = bpmem.blendmode.UseLogicOp();
return out;
}
@ -1164,18 +1165,29 @@ ShaderCode GenPixelShader(APIType ApiType, const ShaderHostConfig& host_config,
" }\n"
"\n");
// TODO: Do we still want to support two pass alpha blending?
out.Write(" if (bpmem_rgba6_format)\n"
" ocol0.rgb = float3(TevResult.rgb >> 2) / 63.0;\n"
" else\n"
" ocol0.rgb = float3(TevResult.rgb) / 255.0;\n"
"\n"
" if (bpmem_dstalpha != 0u)\n");
out.Write(" ocol0.a = float(%s >> 2) / 63.0;\n",
BitfieldExtract("bpmem_dstalpha", ConstantAlpha().alpha).c_str());
out.Write(" else\n"
" ocol0.a = float(TevResult.a >> 2) / 63.0;\n"
" \n");
// D3D requires that the shader outputs be uint when writing to a uint render target for logic op.
if (ApiType == APIType::D3D && uid_data->uint_output)
{
out.Write(" if (bpmem_rgba6_format)\n"
" ocol0 = uint4(TevResult & 0xFC);\n"
" else\n"
" ocol0 = uint4(TevResult);\n"
"\n");
}
else
{
out.Write(" if (bpmem_rgba6_format)\n"
" ocol0.rgb = float3(TevResult.rgb >> 2) / 63.0;\n"
" else\n"
" ocol0.rgb = float3(TevResult.rgb) / 255.0;\n"
"\n"
" if (bpmem_dstalpha != 0u)\n");
out.Write(" ocol0.a = float(%s >> 2) / 63.0;\n",
BitfieldExtract("bpmem_dstalpha", ConstantAlpha().alpha).c_str());
out.Write(" else\n"
" ocol0.a = float(TevResult.a >> 2) / 63.0;\n"
" \n");
}
if (use_dual_source)
{
@ -1260,7 +1272,11 @@ void EnumeratePixelShaderUids(const std::function<void(const PixelShaderUid&)>&
continue;
puid->per_pixel_depth = per_pixel_depth != 0;
callback(uid);
for (u32 uint_output = 0; uint_output < 2; uint_output++)
{
puid->uint_output = uint_output;
callback(uid);
}
}
}
}

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@ -15,6 +15,7 @@ struct pixel_ubershader_uid_data
u32 num_texgens : 4;
u32 early_depth : 1;
u32 per_pixel_depth : 1;
u32 uint_output : 1;
u32 NumValues() const { return sizeof(pixel_ubershader_uid_data); }
};