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FramebufferShaderGen: Migrate over to fmt

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Continures the migration of the shader generators over to fmt.
This commit is contained in:
Lioncash
2020-10-19 16:47:28 -04:00
parent 213072b73a
commit df11615bde
1 changed files with 324 additions and 316 deletions
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546
Source/Core/VideoCommon/FramebufferShaderGen.cpp
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@ -4,12 +4,12 @@
#include "VideoCommon/FramebufferShaderGen.h" #include "VideoCommon/FramebufferShaderGen.h"
#include <sstream>
#include <string_view> #include <string_view>
#include "Common/Logging/Log.h" #include "Common/Logging/Log.h"
#include "VideoCommon/FramebufferManager.h" #include "VideoCommon/FramebufferManager.h"
#include "VideoCommon/ShaderGenCommon.h"
#include "VideoCommon/TextureDecoder.h" #include "VideoCommon/TextureDecoder.h"
#include "VideoCommon/VertexShaderGen.h" #include "VideoCommon/VertexShaderGen.h"
#include "VideoCommon/VideoCommon.h" #include "VideoCommon/VideoCommon.h"
@ -24,27 +24,27 @@ APIType GetAPIType()
return g_ActiveConfig.backend_info.api_type; return g_ActiveConfig.backend_info.api_type;
} }
void EmitUniformBufferDeclaration(std::ostringstream& ss) void EmitUniformBufferDeclaration(ShaderCode& code)
{ {
if (GetAPIType() == APIType::D3D) if (GetAPIType() == APIType::D3D)
ss << "cbuffer PSBlock : register(b0)\n"; code.WriteFmt("cbuffer PSBlock : register(b0)\n");
else else
ss << "UBO_BINDING(std140, 1) uniform PSBlock\n"; code.WriteFmt("UBO_BINDING(std140, 1) uniform PSBlock\n");
} }
void EmitSamplerDeclarations(std::ostringstream& ss, u32 start = 0, u32 end = 1, void EmitSamplerDeclarations(ShaderCode& code, u32 start = 0, u32 end = 1,
bool multisampled = false) bool multisampled = false)
{ {
switch (GetAPIType()) switch (GetAPIType())
{ {
case APIType::D3D: case APIType::D3D:
{ {
const char* array_type = multisampled ? "Texture2DMSArray<float4>" : "Texture2DArray<float4>";
for (u32 i = start; i < end; i++) for (u32 i = start; i < end; i++)
{ {
ss << (multisampled ? "Texture2DMSArray<float4>" : "Texture2DArray<float4>") << " tex" << i code.WriteFmt("{} tex{} : register(t{});\n", array_type, i, i);
<< " : register(t" << i << ");\n"; code.WriteFmt("SamplerState samp{} : register(s{});\n", i, i);
ss << "SamplerState"
<< " samp" << i << " : register(s" << i << ");\n";
} }
} }
break; break;
@ -52,10 +52,11 @@ void EmitSamplerDeclarations(std::ostringstream& ss, u32 start = 0, u32 end = 1,
case APIType::OpenGL: case APIType::OpenGL:
case APIType::Vulkan: case APIType::Vulkan:
{ {
const char* array_type = multisampled ? "sampler2DMSArray" : "sampler2DArray";
for (u32 i = start; i < end; i++) for (u32 i = start; i < end; i++)
{ {
ss << "SAMPLER_BINDING(" << i << ") uniform " code.WriteFmt("SAMPLER_BINDING({}) uniform {} samp{};\n", i, array_type, i);
<< (multisampled ? "sampler2DMSArray" : "sampler2DArray") << " samp" << i << ";\n";
} }
} }
break; break;
@ -64,17 +65,17 @@ void EmitSamplerDeclarations(std::ostringstream& ss, u32 start = 0, u32 end = 1,
} }
} }
void EmitSampleTexture(std::ostringstream& ss, u32 n, std::string_view coords) void EmitSampleTexture(ShaderCode& code, u32 n, std::string_view coords)
{ {
switch (GetAPIType()) switch (GetAPIType())
{ {
case APIType::D3D: case APIType::D3D:
ss << "tex" << n << ".Sample(samp" << n << ", " << coords << ')'; code.WriteFmt("tex{}.Sample(samp{}, {})", n, n, coords);
break; break;
case APIType::OpenGL: case APIType::OpenGL:
case APIType::Vulkan: case APIType::Vulkan:
ss << "texture(samp" << n << ", " << coords << ')'; code.WriteFmt("texture(samp{}, {})", n, coords);
break; break;
default: default:
@ -84,17 +85,17 @@ void EmitSampleTexture(std::ostringstream& ss, u32 n, std::string_view coords)
// Emits a texel fetch/load instruction. Assumes that "coords" is a 4-element vector, with z // Emits a texel fetch/load instruction. Assumes that "coords" is a 4-element vector, with z
// containing the layer, and w containing the mipmap level. // containing the layer, and w containing the mipmap level.
void EmitTextureLoad(std::ostringstream& ss, u32 n, std::string_view coords) void EmitTextureLoad(ShaderCode& code, u32 n, std::string_view coords)
{ {
switch (GetAPIType()) switch (GetAPIType())
{ {
case APIType::D3D: case APIType::D3D:
ss << "tex" << n << ".Load(" << coords << ')'; code.WriteFmt("tex{}.Load({})", n, coords);
break; break;
case APIType::OpenGL: case APIType::OpenGL:
case APIType::Vulkan: case APIType::Vulkan:
ss << "texelFetch(samp" << n << ", (" << coords << ").xyz, (" << coords << ").w)"; code.WriteFmt("texelFetch(samp{}, ({}).xyz, ({}).w)", n, coords, coords);
break; break;
default: default:
@ -102,7 +103,7 @@ void EmitTextureLoad(std::ostringstream& ss, u32 n, std::string_view coords)
} }
} }
void EmitVertexMainDeclaration(std::ostringstream& ss, u32 num_tex_inputs, u32 num_color_inputs, void EmitVertexMainDeclaration(ShaderCode& code, u32 num_tex_inputs, u32 num_color_inputs,
bool position_input, u32 num_tex_outputs, u32 num_color_outputs, bool position_input, u32 num_tex_outputs, u32 num_color_outputs,
std::string_view extra_inputs = {}) std::string_view extra_inputs = {})
{ {
@ -110,19 +111,19 @@ void EmitVertexMainDeclaration(std::ostringstream& ss, u32 num_tex_inputs, u32 n
{ {
case APIType::D3D: case APIType::D3D:
{ {
ss << "void main("; code.WriteFmt("void main(");
for (u32 i = 0; i < num_tex_inputs; i++) for (u32 i = 0; i < num_tex_inputs; i++)
ss << "in float3 rawtex" << i << " : TEXCOORD" << i << ", "; code.WriteFmt("in float3 rawtex{} : TEXCOORD{}, ", i, i);
for (u32 i = 0; i < num_color_inputs; i++) for (u32 i = 0; i < num_color_inputs; i++)
ss << "in float4 rawcolor" << i << " : COLOR" << i << ", "; code.WriteFmt("in float4 rawcolor{} : COLOR{}, ", i, i);
if (position_input) if (position_input)
ss << "in float4 rawpos : POSITION, "; code.WriteFmt("in float4 rawpos : POSITION, ");
ss << extra_inputs; code.WriteFmt("{}", extra_inputs);
for (u32 i = 0; i < num_tex_outputs; i++) for (u32 i = 0; i < num_tex_outputs; i++)
ss << "out float3 v_tex" << i << " : TEXCOORD" << i << ", "; code.WriteFmt("out float3 v_tex{} : TEXCOORD{}, ", i, i);
for (u32 i = 0; i < num_color_outputs; i++) for (u32 i = 0; i < num_color_outputs; i++)
ss << "out float4 v_col" << i << " : COLOR" << i << ", "; code.WriteFmt("out float4 v_col{} : COLOR{}, ", i, i);
ss << "out float4 opos : SV_Position)\n"; code.WriteFmt("out float4 opos : SV_Position)\n");
} }
break; break;
@ -131,36 +132,36 @@ void EmitVertexMainDeclaration(std::ostringstream& ss, u32 num_tex_inputs, u32 n
{ {
for (u32 i = 0; i < num_tex_inputs; i++) for (u32 i = 0; i < num_tex_inputs; i++)
{ {
ss << "ATTRIBUTE_LOCATION(" << (SHADER_TEXTURE0_ATTRIB + i) << ") in float3 rawtex" << i const auto attribute = SHADER_TEXTURE0_ATTRIB + i;
<< ";\n"; code.WriteFmt("ATTRIBUTE_LOCATION({}) in float3 rawtex{};\n", attribute, i);
} }
for (u32 i = 0; i < num_color_inputs; i++) for (u32 i = 0; i < num_color_inputs; i++)
{ {
ss << "ATTRIBUTE_LOCATION(" << (SHADER_COLOR0_ATTRIB + i) << ") in float4 rawcolor" << i const auto attribute = SHADER_COLOR0_ATTRIB + i;
<< ";\n"; code.WriteFmt("ATTRIBUTE_LOCATION({}) in float4 rawcolor{};\n", attribute, i);
} }
if (position_input) if (position_input)
ss << "ATTRIBUTE_LOCATION(" << SHADER_POSITION_ATTRIB << ") in float4 rawpos;\n"; code.WriteFmt("ATTRIBUTE_LOCATION({}) in float4 rawpos;\n", SHADER_POSITION_ATTRIB);
if (g_ActiveConfig.backend_info.bSupportsGeometryShaders) if (g_ActiveConfig.backend_info.bSupportsGeometryShaders)
{ {
ss << "VARYING_LOCATION(0) out VertexData {\n"; code.WriteFmt("VARYING_LOCATION(0) out VertexData {{\n");
for (u32 i = 0; i < num_tex_outputs; i++) for (u32 i = 0; i < num_tex_outputs; i++)
ss << " float3 v_tex" << i << ";\n"; code.WriteFmt(" float3 v_tex{};\n", i);
for (u32 i = 0; i < num_color_outputs; i++) for (u32 i = 0; i < num_color_outputs; i++)
ss << " float4 v_col" << i << ";\n"; code.WriteFmt(" float4 v_col{};\n", i);
ss << "};\n"; code.WriteFmt("}};\n");
} }
else else
{ {
for (u32 i = 0; i < num_tex_outputs; i++) for (u32 i = 0; i < num_tex_outputs; i++)
ss << "VARYING_LOCATION(" << i << ") out float3 v_tex" << i << ";\n"; code.WriteFmt("VARYING_LOCATION({}) out float3 v_tex{};\n", i, i);
for (u32 i = 0; i < num_color_outputs; i++) for (u32 i = 0; i < num_color_outputs; i++)
ss << "VARYING_LOCATION(" << (num_tex_inputs + i) << ") out float4 v_col" << i << ";\n"; code.WriteFmt("VARYING_LOCATION({}) out float4 v_col{};\n", num_tex_inputs + i, i);
} }
ss << "#define opos gl_Position\n"; code.WriteFmt("#define opos gl_Position\n");
ss << extra_inputs << '\n'; code.WriteFmt("{}\n", extra_inputs);
ss << "void main()\n"; code.WriteFmt("void main()\n");
} }
break; break;
default: default:
@ -168,7 +169,7 @@ void EmitVertexMainDeclaration(std::ostringstream& ss, u32 num_tex_inputs, u32 n
} }
} }
void EmitPixelMainDeclaration(std::ostringstream& ss, u32 num_tex_inputs, u32 num_color_inputs, void EmitPixelMainDeclaration(ShaderCode& code, u32 num_tex_inputs, u32 num_color_inputs,
std::string_view output_type = "float4", std::string_view output_type = "float4",
std::string_view extra_vars = {}, bool emit_frag_coord = false) std::string_view extra_vars = {}, bool emit_frag_coord = false)
{ {
@ -176,14 +177,14 @@ void EmitPixelMainDeclaration(std::ostringstream& ss, u32 num_tex_inputs, u32 nu
{ {
case APIType::D3D: case APIType::D3D:
{ {
ss << "void main("; code.WriteFmt("void main(");
for (u32 i = 0; i < num_tex_inputs; i++) for (u32 i = 0; i < num_tex_inputs; i++)
ss << "in float3 v_tex" << i << " : TEXCOORD" << i << ", "; code.WriteFmt("in float3 v_tex{} : TEXCOORD{}, ", i, i);
for (u32 i = 0; i < num_color_inputs; i++) for (u32 i = 0; i < num_color_inputs; i++)
ss << "in float4 v_col" << i << " : COLOR" << i << ", "; code.WriteFmt("in float4 v_col{} : COLOR{}, ", i, i);
if (emit_frag_coord) if (emit_frag_coord)
ss << "in float4 frag_coord : SV_Position, "; code.WriteFmt("in float4 frag_coord : SV_Position, ");
ss << extra_vars << "out " << output_type << " ocol0 : SV_Target)\n"; code.WriteFmt("{}out {} ocol0 : SV_Target)\n", extra_vars, output_type);
} }
break; break;
@ -192,26 +193,26 @@ void EmitPixelMainDeclaration(std::ostringstream& ss, u32 num_tex_inputs, u32 nu
{ {
if (g_ActiveConfig.backend_info.bSupportsGeometryShaders) if (g_ActiveConfig.backend_info.bSupportsGeometryShaders)
{ {
ss << "VARYING_LOCATION(0) in VertexData {\n"; code.WriteFmt("VARYING_LOCATION(0) in VertexData {{\n");
for (u32 i = 0; i < num_tex_inputs; i++) for (u32 i = 0; i < num_tex_inputs; i++)
ss << " in float3 v_tex" << i << ";\n"; code.WriteFmt(" in float3 v_tex{};\n", i);
for (u32 i = 0; i < num_color_inputs; i++) for (u32 i = 0; i < num_color_inputs; i++)
ss << " in float4 v_col" << i << ";\n"; code.WriteFmt(" in float4 v_col{};\n", i);
ss << "};\n"; code.WriteFmt("}};\n");
} }
else else
{ {
for (u32 i = 0; i < num_tex_inputs; i++) for (u32 i = 0; i < num_tex_inputs; i++)
ss << "VARYING_LOCATION(" << i << ") in float3 v_tex" << i << ";\n"; code.WriteFmt("VARYING_LOCATION({}) in float3 v_tex{};\n", i, i);
for (u32 i = 0; i < num_color_inputs; i++) for (u32 i = 0; i < num_color_inputs; i++)
ss << "VARYING_LOCATION(" << (num_tex_inputs + i) << ") in float4 v_col" << i << ";\n"; code.WriteFmt("VARYING_LOCATION({}) in float4 v_col{};\n", num_tex_inputs + i, i);
} }
ss << "FRAGMENT_OUTPUT_LOCATION(0) out " << output_type << " ocol0;\n"; code.WriteFmt("FRAGMENT_OUTPUT_LOCATION(0) out {} ocol0;\n", output_type);
ss << extra_vars << "\n"; code.WriteFmt("{}\n", extra_vars);
if (emit_frag_coord) if (emit_frag_coord)
ss << "#define frag_coord gl_FragCoord\n"; code.WriteFmt("#define frag_coord gl_FragCoord\n");
ss << "void main()\n"; code.WriteFmt("void main()\n");
} }
break; break;
@ -223,399 +224,406 @@ void EmitPixelMainDeclaration(std::ostringstream& ss, u32 num_tex_inputs, u32 nu
std::string GenerateScreenQuadVertexShader() std::string GenerateScreenQuadVertexShader()
{ {
std::ostringstream ss; ShaderCode code;
EmitVertexMainDeclaration(ss, 0, 0, false, 1, 0, EmitVertexMainDeclaration(code, 0, 0, false, 1, 0,
GetAPIType() == APIType::D3D ? "in uint id : SV_VertexID, " : GetAPIType() == APIType::D3D ? "in uint id : SV_VertexID, " :
"#define id gl_VertexID\n"); "#define id gl_VertexID\n");
ss << "{\n" code.WriteFmt(
"{{\n"
" v_tex0 = float3(float((id << 1) & 2), float(id & 2), 0.0f);\n" " v_tex0 = float3(float((id << 1) & 2), float(id & 2), 0.0f);\n"
" opos = float4(v_tex0.xy * float2(2.0f, -2.0f) + float2(-1.0f, 1.0f), 0.0f, 1.0f);\n"; " opos = float4(v_tex0.xy * float2(2.0f, -2.0f) + float2(-1.0f, 1.0f), 0.0f, 1.0f);\n");
// NDC space is flipped in Vulkan. We also flip in GL so that (0,0) is in the lower-left. // NDC space is flipped in Vulkan. We also flip in GL so that (0,0) is in the lower-left.
if (GetAPIType() == APIType::Vulkan || GetAPIType() == APIType::OpenGL) if (GetAPIType() == APIType::Vulkan || GetAPIType() == APIType::OpenGL)
ss << " opos.y = -opos.y;\n"; code.WriteFmt(" opos.y = -opos.y;\n");
ss << "}\n"; code.WriteFmt("}}\n");
return ss.str(); return code.GetBuffer();
} }
std::string GeneratePassthroughGeometryShader(u32 num_tex, u32 num_colors) std::string GeneratePassthroughGeometryShader(u32 num_tex, u32 num_colors)
{ {
std::ostringstream ss; ShaderCode code;
if (GetAPIType() == APIType::D3D) if (GetAPIType() == APIType::D3D)
{ {
ss << "struct VS_OUTPUT\n" code.WriteFmt("struct VS_OUTPUT\n"
"{\n"; "{{\n");
for (u32 i = 0; i < num_tex; i++) for (u32 i = 0; i < num_tex; i++)
ss << " float3 tex" << i << " : TEXCOORD" << i << ";\n"; code.WriteFmt(" float3 tex{} : TEXCOORD{};\n", i, i);
for (u32 i = 0; i < num_colors; i++) for (u32 i = 0; i < num_colors; i++)
ss << " float4 color" << i << " : COLOR" << i << ";\n"; code.WriteFmt(" float4 color{} : COLOR{};\n", i, i);
ss << " float4 position : SV_Position;\n" code.WriteFmt(" float4 position : SV_Position;\n"
"};\n"; "}};\n");
ss << "struct GS_OUTPUT\n" code.WriteFmt("struct GS_OUTPUT\n"
"{"; "{{");
for (u32 i = 0; i < num_tex; i++) for (u32 i = 0; i < num_tex; i++)
ss << " float3 tex" << i << " : TEXCOORD" << i << ";\n"; code.WriteFmt(" float3 tex{} : TEXCOORD{};\n", i, i);
for (u32 i = 0; i < num_colors; i++) for (u32 i = 0; i < num_colors; i++)
ss << " float4 color" << i << " : COLOR" << i << ";\n"; code.WriteFmt(" float4 color{} : COLOR{};\n", i, i);
ss << " float4 position : SV_Position;\n" code.WriteFmt(" float4 position : SV_Position;\n"
" uint slice : SV_RenderTargetArrayIndex;\n" " uint slice : SV_RenderTargetArrayIndex;\n"
"};\n\n"; "}};\n\n");
ss << "[maxvertexcount(6)]\n" code.WriteFmt("[maxvertexcount(6)]\n"
"void main(triangle VS_OUTPUT vso[3], inout TriangleStream<GS_OUTPUT> output)\n" "void main(triangle VS_OUTPUT vso[3], inout TriangleStream<GS_OUTPUT> output)\n"
"{\n" "{{\n"
" for (uint slice = 0; slice < 2u; slice++)\n" " for (uint slice = 0; slice < 2u; slice++)\n"
" {\n" " {{\n"
" for (int i = 0; i < 3; i++)\n" " for (int i = 0; i < 3; i++)\n"
" {\n" " {{\n"
" GS_OUTPUT gso;\n" " GS_OUTPUT gso;\n"
" gso.position = vso[i].position;\n"; " gso.position = vso[i].position;\n");
for (u32 i = 0; i < num_tex; i++) for (u32 i = 0; i < num_tex; i++)
ss << " gso.tex" << i << " = float3(vso[i].tex" << i << ".xy, float(slice));\n"; code.WriteFmt(" gso.tex{} = float3(vso[i].tex{}.xy, float(slice));\n", i, i);
for (u32 i = 0; i < num_colors; i++) for (u32 i = 0; i < num_colors; i++)
ss << " gso.color" << i << " = vso[i].color" << i << ";\n"; code.WriteFmt(" gso.color{} = vso[i].color{};\n", i, i);
ss << " gso.slice = slice;\n" code.WriteFmt(" gso.slice = slice;\n"
" output.Append(gso);\n" " output.Append(gso);\n"
" }\n" " }}\n"
" output.RestartStrip();\n" " output.RestartStrip();\n"
" }\n" " }}\n"
"}\n"; "}}\n");
} }
else if (GetAPIType() == APIType::OpenGL || GetAPIType() == APIType::Vulkan) else if (GetAPIType() == APIType::OpenGL || GetAPIType() == APIType::Vulkan)
{ {
ss << "layout(triangles) in;\n" code.WriteFmt("layout(triangles) in;\n"
"layout(triangle_strip, max_vertices = 6) out;\n"; "layout(triangle_strip, max_vertices = 6) out;\n");
if (num_tex > 0 || num_colors > 0) if (num_tex > 0 || num_colors > 0)
{ {
ss << "VARYING_LOCATION(0) in VertexData {\n"; code.WriteFmt("VARYING_LOCATION(0) in VertexData {{\n");
for (u32 i = 0; i < num_tex; i++) for (u32 i = 0; i < num_tex; i++)
ss << " float3 v_tex" << i << ";\n"; code.WriteFmt(" float3 v_tex{};\n", i);
for (u32 i = 0; i < num_colors; i++) for (u32 i = 0; i < num_colors; i++)
ss << " float4 v_col" << i << ";\n"; code.WriteFmt(" float4 v_col{};\n", i);
ss << "} v_in[];\n"; code.WriteFmt("}} v_in[];\n");
ss << "VARYING_LOCATION(0) out VertexData {\n"; code.WriteFmt("VARYING_LOCATION(0) out VertexData {{\n");
for (u32 i = 0; i < num_tex; i++) for (u32 i = 0; i < num_tex; i++)
ss << " float3 v_tex" << i << ";\n"; code.WriteFmt(" float3 v_tex{};\n", i);
for (u32 i = 0; i < num_colors; i++) for (u32 i = 0; i < num_colors; i++)
ss << " float4 v_col" << i << ";\n"; code.WriteFmt(" float4 v_col{};\n", i);
ss << "} v_out;\n"; code.WriteFmt("}} v_out;\n");
} }
ss << "\n" code.WriteFmt("\n"
"void main()\n" "void main()\n"
"{\n" "{{\n"
" for (int j = 0; j < 2; j++)\n" " for (int j = 0; j < 2; j++)\n"
" {\n" " {{\n"
" gl_Layer = j;\n"; " gl_Layer = j;\n");
// We have to explicitly unroll this loop otherwise the GL compiler gets cranky. // We have to explicitly unroll this loop otherwise the GL compiler gets cranky.
for (u32 v = 0; v < 3; v++) for (u32 v = 0; v < 3; v++)
{ {
ss << " gl_Position = gl_in[" << v << "].gl_Position;\n"; code.WriteFmt(" gl_Position = gl_in[{}].gl_Position;\n", v);
for (u32 i = 0; i < num_tex; i++) for (u32 i = 0; i < num_tex; i++)
ss << " v_out.v_tex" << i << " = float3(v_in[" << v << "].v_tex" << i {
<< ".xy, float(j));\n"; code.WriteFmt(" v_out.v_tex{} = float3(v_in[{}].v_tex{}.xy, float(j));\n", i, v, i);
for (u32 i = 0; i < num_colors; i++)
ss << " v_out.v_col" << i << " = v_in[" << v << "].v_col" << i << ";\n";
ss << " EmitVertex();\n\n";
} }
ss << " EndPrimitive();\n" for (u32 i = 0; i < num_colors; i++)
" }\n" code.WriteFmt(" v_out.v_col{} = v_in[{}].v_col{};\n", i, v, i);
"}\n"; code.WriteFmt(" EmitVertex();\n\n");
}
code.WriteFmt(" EndPrimitive();\n"
" }}\n"
"}}\n");
} }
return ss.str(); return code.GetBuffer();
} }
std::string GenerateTextureCopyVertexShader() std::string GenerateTextureCopyVertexShader()
{ {
std::ostringstream ss; ShaderCode code;
EmitUniformBufferDeclaration(ss); EmitUniformBufferDeclaration(code);
ss << "{" code.WriteFmt("{{"
" float2 src_offset;\n" " float2 src_offset;\n"
" float2 src_size;\n" " float2 src_size;\n"
"};\n\n"; "}};\n\n");
EmitVertexMainDeclaration(ss, 0, 0, false, 1, 0, EmitVertexMainDeclaration(code, 0, 0, false, 1, 0,
GetAPIType() == APIType::D3D ? "in uint id : SV_VertexID, " : GetAPIType() == APIType::D3D ? "in uint id : SV_VertexID, " :
"#define id gl_VertexID"); "#define id gl_VertexID");
ss << "{\n" code.WriteFmt(
"{{\n"
" v_tex0 = float3(float((id << 1) & 2), float(id & 2), 0.0f);\n" " v_tex0 = float3(float((id << 1) & 2), float(id & 2), 0.0f);\n"
" opos = float4(v_tex0.xy * float2(2.0f, -2.0f) + float2(-1.0f, 1.0f), 0.0f, 1.0f);\n" " opos = float4(v_tex0.xy * float2(2.0f, -2.0f) + float2(-1.0f, 1.0f), 0.0f, 1.0f);\n"
" v_tex0 = float3(src_offset + (src_size * v_tex0.xy), 0.0f);\n"; " v_tex0 = float3(src_offset + (src_size * v_tex0.xy), 0.0f);\n");
// NDC space is flipped in Vulkan. We also flip in GL so that (0,0) is in the lower-left. // NDC space is flipped in Vulkan. We also flip in GL so that (0,0) is in the lower-left.
if (GetAPIType() == APIType::Vulkan || GetAPIType() == APIType::OpenGL) if (GetAPIType() == APIType::Vulkan || GetAPIType() == APIType::OpenGL)
ss << " opos.y = -opos.y;\n"; code.WriteFmt(" opos.y = -opos.y;\n");
ss << "}\n"; code.WriteFmt("}}\n");
return ss.str(); return code.GetBuffer();
} }
std::string GenerateTextureCopyPixelShader() std::string GenerateTextureCopyPixelShader()
{ {
std::ostringstream ss; ShaderCode code;
EmitSamplerDeclarations(ss, 0, 1, false); EmitSamplerDeclarations(code, 0, 1, false);
EmitPixelMainDeclaration(ss, 1, 0); EmitPixelMainDeclaration(code, 1, 0);
ss << "{\n" code.WriteFmt("{{\n"
" ocol0 = "; " ocol0 = ");
EmitSampleTexture(ss, 0, "v_tex0"); EmitSampleTexture(code, 0, "v_tex0");
ss << ";\n" code.WriteFmt(";\n"
"}\n"; "}}\n");
return ss.str(); return code.GetBuffer();
} }
std::string GenerateColorPixelShader() std::string GenerateColorPixelShader()
{ {
std::ostringstream ss; ShaderCode code;
EmitPixelMainDeclaration(ss, 0, 1); EmitPixelMainDeclaration(code, 0, 1);
ss << "{\n" code.WriteFmt("{{\n"
" ocol0 = v_col0;\n" " ocol0 = v_col0;\n"
"}\n"; "}}\n");
return ss.str(); return code.GetBuffer();
} }
std::string GenerateResolveDepthPixelShader(u32 samples) std::string GenerateResolveDepthPixelShader(u32 samples)
{ {
std::ostringstream ss; ShaderCode code;
EmitSamplerDeclarations(ss, 0, 1, true); EmitSamplerDeclarations(code, 0, 1, true);
EmitPixelMainDeclaration(ss, 1, 0, "float", EmitPixelMainDeclaration(code, 1, 0, "float",
GetAPIType() == APIType::D3D ? "in float4 ipos : SV_Position, " : ""); GetAPIType() == APIType::D3D ? "in float4 ipos : SV_Position, " : "");
ss << "{\n" code.WriteFmt("{{\n"
" int layer = int(v_tex0.z);\n"; " int layer = int(v_tex0.z);\n");
if (GetAPIType() == APIType::D3D) if (GetAPIType() == APIType::D3D)
ss << " int3 coords = int3(int2(ipos.xy), layer);\n"; code.WriteFmt(" int3 coords = int3(int2(ipos.xy), layer);\n");
else else
ss << " int3 coords = int3(int2(gl_FragCoord.xy), layer);\n"; code.WriteFmt(" int3 coords = int3(int2(gl_FragCoord.xy), layer);\n");
// Take the minimum of all depth samples. // Take the minimum of all depth samples.
if (GetAPIType() == APIType::D3D) if (GetAPIType() == APIType::D3D)
ss << " ocol0 = tex0.Load(coords, 0).r;\n"; code.WriteFmt(" ocol0 = tex0.Load(coords, 0).r;\n");
else else
ss << " ocol0 = texelFetch(samp0, coords, 0).r;\n"; code.WriteFmt(" ocol0 = texelFetch(samp0, coords, 0).r;\n");
ss << " for (int i = 1; i < " << samples << "; i++)\n"; code.WriteFmt(" for (int i = 1; i < {}; i++)\n", samples);
if (GetAPIType() == APIType::D3D) if (GetAPIType() == APIType::D3D)
ss << " ocol0 = min(ocol0, tex0.Load(coords, i).r);\n"; code.WriteFmt(" ocol0 = min(ocol0, tex0.Load(coords, i).r);\n");
else else
ss << " ocol0 = min(ocol0, texelFetch(samp0, coords, i).r);\n"; code.WriteFmt(" ocol0 = min(ocol0, texelFetch(samp0, coords, i).r);\n");
ss << "}\n"; code.WriteFmt("}}\n");
return ss.str(); return code.GetBuffer();
} }
std::string GenerateClearVertexShader() std::string GenerateClearVertexShader()
{ {
std::ostringstream ss; ShaderCode code;
EmitUniformBufferDeclaration(ss); EmitUniformBufferDeclaration(code);
ss << "{\n" code.WriteFmt("{{\n"
" float4 clear_color;\n" " float4 clear_color;\n"
" float clear_depth;\n" " float clear_depth;\n"
"};\n"; "}};\n");
EmitVertexMainDeclaration(ss, 0, 0, false, 0, 1, EmitVertexMainDeclaration(code, 0, 0, false, 0, 1,
GetAPIType() == APIType::D3D ? "in uint id : SV_VertexID, " : GetAPIType() == APIType::D3D ? "in uint id : SV_VertexID, " :
"#define id gl_VertexID\n"); "#define id gl_VertexID\n");
ss << "{\n" code.WriteFmt(
"{{\n"
" float2 coord = float2(float((id << 1) & 2), float(id & 2));\n" " float2 coord = float2(float((id << 1) & 2), float(id & 2));\n"
" opos = float4(coord * float2(2.0f, -2.0f) + float2(-1.0f, 1.0f), clear_depth, 1.0f);\n" " opos = float4(coord * float2(2.0f, -2.0f) + float2(-1.0f, 1.0f), clear_depth, 1.0f);\n"
" v_col0 = clear_color;\n"; " v_col0 = clear_color;\n");
// NDC space is flipped in Vulkan // NDC space is flipped in Vulkan
if (GetAPIType() == APIType::Vulkan) if (GetAPIType() == APIType::Vulkan)
ss << " opos.y = -opos.y;\n"; code.WriteFmt(" opos.y = -opos.y;\n");
ss << "}\n"; code.WriteFmt("}}\n");
return ss.str(); return code.GetBuffer();
} }
std::string GenerateEFBPokeVertexShader() std::string GenerateEFBPokeVertexShader()
{ {
std::ostringstream ss; ShaderCode code;
EmitVertexMainDeclaration(ss, 0, 1, true, 0, 1); EmitVertexMainDeclaration(code, 0, 1, true, 0, 1);
ss << "{\n" code.WriteFmt("{{\n"
" v_col0 = rawcolor0;\n" " v_col0 = rawcolor0;\n"
" opos = float4(rawpos.xyz, 1.0f);\n"; " opos = float4(rawpos.xyz, 1.0f);\n");
if (g_ActiveConfig.backend_info.bSupportsLargePoints) if (g_ActiveConfig.backend_info.bSupportsLargePoints)
ss << " gl_PointSize = rawpos.w;\n"; code.WriteFmt(" gl_PointSize = rawpos.w;\n");
// NDC space is flipped in Vulkan. // NDC space is flipped in Vulkan.
if (GetAPIType() == APIType::Vulkan) if (GetAPIType() == APIType::Vulkan)
ss << " opos.y = -opos.y;\n"; code.WriteFmt(" opos.y = -opos.y;\n");
ss << "}\n"; code.WriteFmt("}}\n");
return ss.str(); return code.GetBuffer();
} }
std::string GenerateFormatConversionShader(EFBReinterpretType convtype, u32 samples) std::string GenerateFormatConversionShader(EFBReinterpretType convtype, u32 samples)
{ {
std::ostringstream ss; ShaderCode code;
EmitSamplerDeclarations(ss, 0, 1, samples > 1); EmitSamplerDeclarations(code, 0, 1, samples > 1);
EmitPixelMainDeclaration( EmitPixelMainDeclaration(
ss, 1, 0, "float4", code, 1, 0, "float4",
GetAPIType() == APIType::D3D ? GetAPIType() == APIType::D3D ?
(g_ActiveConfig.bSSAA ? (g_ActiveConfig.bSSAA ?
"in float4 ipos : SV_Position, in uint isample : SV_SampleIndex, " : "in float4 ipos : SV_Position, in uint isample : SV_SampleIndex, " :
"in float4 ipos : SV_Position, ") : "in float4 ipos : SV_Position, ") :
""); "");
ss << "{\n" code.WriteFmt("{{\n"
" int layer = int(v_tex0.z);\n"; " int layer = int(v_tex0.z);\n");
if (GetAPIType() == APIType::D3D) if (GetAPIType() == APIType::D3D)
ss << " int3 coords = int3(int2(ipos.xy), layer);\n"; code.WriteFmt(" int3 coords = int3(int2(ipos.xy), layer);\n");
else else
ss << " int3 coords = int3(int2(gl_FragCoord.xy), layer);\n"; code.WriteFmt(" int3 coords = int3(int2(gl_FragCoord.xy), layer);\n");
if (samples == 1) if (samples == 1)
{ {
// No MSAA at all. // No MSAA at all.
if (GetAPIType() == APIType::D3D) if (GetAPIType() == APIType::D3D)
ss << " float4 val = tex0.Load(int4(coords, 0));\n"; code.WriteFmt(" float4 val = tex0.Load(int4(coords, 0));\n");
else else
ss << " float4 val = texelFetch(samp0, coords, 0);\n"; code.WriteFmt(" float4 val = texelFetch(samp0, coords, 0);\n");
} }
else if (g_ActiveConfig.bSSAA) else if (g_ActiveConfig.bSSAA)
{ {
// Sample shading, shader runs once per sample // Sample shading, shader runs once per sample
if (GetAPIType() == APIType::D3D) if (GetAPIType() == APIType::D3D)
ss << " float4 val = tex0.Load(coords, isample);"; code.WriteFmt(" float4 val = tex0.Load(coords, isample);");
else else
ss << " float4 val = texelFetch(samp0, coords, gl_SampleID);"; code.WriteFmt(" float4 val = texelFetch(samp0, coords, gl_SampleID);");
} }
else else
{ {
// MSAA without sample shading, average out all samples. // MSAA without sample shading, average out all samples.
ss << " float4 val = float4(0.0f, 0.0f, 0.0f, 0.0f);\n"; code.WriteFmt(" float4 val = float4(0.0f, 0.0f, 0.0f, 0.0f);\n");
ss << " for (int i = 0; i < " << samples << "; i++)\n"; code.WriteFmt(" for (int i = 0; i < {}; i++)\n", samples);
if (GetAPIType() == APIType::D3D) if (GetAPIType() == APIType::D3D)
ss << " val += tex0.Load(coords, i);\n"; code.WriteFmt(" val += tex0.Load(coords, i);\n");
else else
ss << " val += texelFetch(samp0, coords, i);\n"; code.WriteFmt(" val += texelFetch(samp0, coords, i);\n");
ss << " val /= float(" << samples << ");\n"; code.WriteFmt(" val /= float({});\n", samples);
} }
switch (convtype) switch (convtype)
{ {
case EFBReinterpretType::RGB8ToRGBA6: case EFBReinterpretType::RGB8ToRGBA6:
ss << " int4 src8 = int4(round(val * 255.f));\n" code.WriteFmt(" int4 src8 = int4(round(val * 255.f));\n"
" int4 dst6;\n" " int4 dst6;\n"
" dst6.r = src8.r >> 2;\n" " dst6.r = src8.r >> 2;\n"
" dst6.g = ((src8.r & 0x3) << 4) | (src8.g >> 4);\n" " dst6.g = ((src8.r & 0x3) << 4) | (src8.g >> 4);\n"
" dst6.b = ((src8.g & 0xF) << 2) | (src8.b >> 6);\n" " dst6.b = ((src8.g & 0xF) << 2) | (src8.b >> 6);\n"
" dst6.a = src8.b & 0x3F;\n" " dst6.a = src8.b & 0x3F;\n"
" ocol0 = float4(dst6) / 63.f;\n"; " ocol0 = float4(dst6) / 63.f;\n");
break; break;
case EFBReinterpretType::RGB8ToRGB565: case EFBReinterpretType::RGB8ToRGB565:
ss << " ocol0 = val;\n"; code.WriteFmt(" ocol0 = val;\n");
break; break;
case EFBReinterpretType::RGBA6ToRGB8: case EFBReinterpretType::RGBA6ToRGB8:
ss << " int4 src6 = int4(round(val * 63.f));\n" code.WriteFmt(" int4 src6 = int4(round(val * 63.f));\n"
" int4 dst8;\n" " int4 dst8;\n"
" dst8.r = (src6.r << 2) | (src6.g >> 4);\n" " dst8.r = (src6.r << 2) | (src6.g >> 4);\n"
" dst8.g = ((src6.g & 0xF) << 4) | (src6.b >> 2);\n" " dst8.g = ((src6.g & 0xF) << 4) | (src6.b >> 2);\n"
" dst8.b = ((src6.b & 0x3) << 6) | src6.a;\n" " dst8.b = ((src6.b & 0x3) << 6) | src6.a;\n"
" dst8.a = 255;\n" " dst8.a = 255;\n"
" ocol0 = float4(dst8) / 255.f;\n"; " ocol0 = float4(dst8) / 255.f;\n");
break; break;
case EFBReinterpretType::RGBA6ToRGB565: case EFBReinterpretType::RGBA6ToRGB565:
ss << " ocol0 = val;\n"; code.WriteFmt(" ocol0 = val;\n");
break; break;
case EFBReinterpretType::RGB565ToRGB8: case EFBReinterpretType::RGB565ToRGB8:
ss << " ocol0 = val;\n"; code.WriteFmt(" ocol0 = val;\n");
break; break;
case EFBReinterpretType::RGB565ToRGBA6: case EFBReinterpretType::RGB565ToRGBA6:
// //
ss << " ocol0 = val;\n"; code.WriteFmt(" ocol0 = val;\n");
break; break;
} }
ss << "}\n"; code.WriteFmt("}}\n");
return ss.str(); return code.GetBuffer();
} }
std::string GenerateTextureReinterpretShader(TextureFormat from_format, TextureFormat to_format) std::string GenerateTextureReinterpretShader(TextureFormat from_format, TextureFormat to_format)
{ {
std::ostringstream ss; ShaderCode code;
EmitSamplerDeclarations(ss, 0, 1, false); EmitSamplerDeclarations(code, 0, 1, false);
EmitPixelMainDeclaration(ss, 1, 0, "float4", "", true); EmitPixelMainDeclaration(code, 1, 0, "float4", "", true);
ss << "{\n" code.WriteFmt("{{\n"
" int layer = int(v_tex0.z);\n" " int layer = int(v_tex0.z);\n"
" int4 coords = int4(int2(frag_coord.xy), layer, 0);\n"; " int4 coords = int4(int2(frag_coord.xy), layer, 0);\n");
// Convert to a 32-bit value encompassing all channels, filling the most significant bits with // Convert to a 32-bit value encompassing all channels, filling the most significant bits with
// zeroes. // zeroes.
ss << " uint raw_value;\n"; code.WriteFmt(" uint raw_value;\n");
switch (from_format) switch (from_format)
{ {
case TextureFormat::I8: case TextureFormat::I8:
case TextureFormat::C8: case TextureFormat::C8:
{ {
ss << " float4 temp_value = "; code.WriteFmt(" float4 temp_value = ");
EmitTextureLoad(ss, 0, "coords"); EmitTextureLoad(code, 0, "coords");
ss << ";\n" code.WriteFmt(";\n"
" raw_value = uint(temp_value.r * 255.0);\n"; " raw_value = uint(temp_value.r * 255.0);\n");
} }
break; break;
case TextureFormat::IA8: case TextureFormat::IA8:
{ {
ss << " float4 temp_value = "; code.WriteFmt(" float4 temp_value = ");
EmitTextureLoad(ss, 0, "coords"); EmitTextureLoad(code, 0, "coords");
ss << ";\n" code.WriteFmt(
" raw_value = uint(temp_value.r * 255.0) | (uint(temp_value.a * 255.0) << 8);\n"; ";\n"
" raw_value = uint(temp_value.r * 255.0) | (uint(temp_value.a * 255.0) << 8);\n");
} }
break; break;
case TextureFormat::I4: case TextureFormat::I4:
{ {
ss << " float4 temp_value = "; code.WriteFmt(" float4 temp_value = ");
EmitTextureLoad(ss, 0, "coords"); EmitTextureLoad(code, 0, "coords");
ss << ";\n" code.WriteFmt(";\n"
" raw_value = uint(temp_value.r * 15.0);\n"; " raw_value = uint(temp_value.r * 15.0);\n");
} }
break; break;
case TextureFormat::IA4: case TextureFormat::IA4:
{ {
ss << " float4 temp_value = "; code.WriteFmt(" float4 temp_value = ");
EmitTextureLoad(ss, 0, "coords"); EmitTextureLoad(code, 0, "coords");
ss << ";\n" code.WriteFmt(";\n"
" raw_value = uint(temp_value.r * 15.0) | (uint(temp_value.a * 15.0) << 4);\n"; " raw_value = uint(temp_value.r * 15.0) | (uint(temp_value.a * 15.0) << 4);\n");
} }
break; break;
case TextureFormat::RGB565: case TextureFormat::RGB565:
{ {
ss << " float4 temp_value = "; code.WriteFmt(" float4 temp_value = ");
EmitTextureLoad(ss, 0, "coords"); EmitTextureLoad(code, 0, "coords");
ss << ";\n" code.WriteFmt(";\n"
" raw_value = uint(temp_value.b * 31.0) | (uint(temp_value.g * 63.0) << 5) |\n" " raw_value = uint(temp_value.b * 31.0) | (uint(temp_value.g * 63.0) << 5) |\n"
" (uint(temp_value.r * 31.0) << 11);\n"; " (uint(temp_value.r * 31.0) << 11);\n");
} }
break; break;
case TextureFormat::RGB5A3: case TextureFormat::RGB5A3:
{ {
ss << " float4 temp_value = "; code.WriteFmt(" float4 temp_value = ");
EmitTextureLoad(ss, 0, "coords"); EmitTextureLoad(code, 0, "coords");
ss << ";\n"; code.WriteFmt(";\n");
// 0.8784 = 224 / 255 which is the maximum alpha value that can be represented in 3 bits // 0.8784 = 224 / 255 which is the maximum alpha value that can be represented in 3 bits
ss << " if (temp_value.a > 0.878f) {\n" code.WriteFmt(
" if (temp_value.a > 0.878f) {{\n"
" raw_value = (uint(temp_value.b * 31.0)) | (uint(temp_value.g * 31.0) << 5) |\n" " raw_value = (uint(temp_value.b * 31.0)) | (uint(temp_value.g * 31.0) << 5) |\n"
" (uint(temp_value.r * 31.0) << 10) | 0x8000u;\n" " (uint(temp_value.r * 31.0) << 10) | 0x8000u;\n"
" } else {\n" " }} else {{\n"
" raw_value = (uint(temp_value.b * 15.0)) | (uint(temp_value.g * 15.0) << 4) |\n" " raw_value = (uint(temp_value.b * 15.0)) | (uint(temp_value.g * 15.0) << 4) |\n"
" (uint(temp_value.r * 15.0) << 8) | (uint(temp_value.a * 7.0) << 12);\n" " (uint(temp_value.r * 15.0) << 8) | (uint(temp_value.a * 7.0) << 12);\n"
" }\n"; " }}\n");
} }
break; break;
@ -630,45 +638,45 @@ std::string GenerateTextureReinterpretShader(TextureFormat from_format, TextureF
case TextureFormat::I8: case TextureFormat::I8:
case TextureFormat::C8: case TextureFormat::C8:
{ {
ss << " float orgba = float(raw_value & 0xFFu) / 255.0;\n" code.WriteFmt(" float orgba = float(raw_value & 0xFFu) / 255.0;\n"
" ocol0 = float4(orgba, orgba, orgba, orgba);\n"; " ocol0 = float4(orgba, orgba, orgba, orgba);\n");
} }
break; break;
case TextureFormat::IA8: case TextureFormat::IA8:
{ {
ss << " float orgb = float(raw_value & 0xFFu) / 255.0;\n" code.WriteFmt(" float orgb = float(raw_value & 0xFFu) / 255.0;\n"
" ocol0 = float4(orgb, orgb, orgb, float((raw_value >> 8) & 0xFFu) / 255.0);\n"; " ocol0 = float4(orgb, orgb, orgb, float((raw_value >> 8) & 0xFFu) / 255.0);\n");
} }
break; break;
case TextureFormat::IA4: case TextureFormat::IA4:
{ {
ss << " float orgb = float(raw_value & 0xFu) / 15.0;\n" code.WriteFmt(" float orgb = float(raw_value & 0xFu) / 15.0;\n"
" ocol0 = float4(orgb, orgb, orgb, float((raw_value >> 4) & 0xFu) / 15.0);\n"; " ocol0 = float4(orgb, orgb, orgb, float((raw_value >> 4) & 0xFu) / 15.0);\n");
} }
break; break;
case TextureFormat::RGB565: case TextureFormat::RGB565:
{ {
ss << " ocol0 = float4(float((raw_value >> 10) & 0x1Fu) / 31.0,\n" code.WriteFmt(" ocol0 = float4(float((raw_value >> 10) & 0x1Fu) / 31.0,\n"
" float((raw_value >> 5) & 0x1Fu) / 31.0,\n" " float((raw_value >> 5) & 0x1Fu) / 31.0,\n"
" float(raw_value & 0x1Fu) / 31.0, 1.0);\n"; " float(raw_value & 0x1Fu) / 31.0, 1.0);\n");
} }
break; break;
case TextureFormat::RGB5A3: case TextureFormat::RGB5A3:
{ {
ss << " if ((raw_value & 0x8000u) != 0u) {\n" code.WriteFmt(" if ((raw_value & 0x8000u) != 0u) {{\n"
" ocol0 = float4(float((raw_value >> 10) & 0x1Fu) / 31.0,\n" " ocol0 = float4(float((raw_value >> 10) & 0x1Fu) / 31.0,\n"
" float((raw_value >> 5) & 0x1Fu) / 31.0,\n" " float((raw_value >> 5) & 0x1Fu) / 31.0,\n"
" float(raw_value & 0x1Fu) / 31.0, 1.0);\n" " float(raw_value & 0x1Fu) / 31.0, 1.0);\n"
" } else {\n" " }} else {{\n"
" ocol0 = float4(float((raw_value >> 8) & 0x0Fu) / 15.0,\n" " ocol0 = float4(float((raw_value >> 8) & 0x0Fu) / 15.0,\n"
" float((raw_value >> 4) & 0x0Fu) / 15.0,\n" " float((raw_value >> 4) & 0x0Fu) / 15.0,\n"
" float(raw_value & 0x0Fu) / 15.0,\n" " float(raw_value & 0x0Fu) / 15.0,\n"
" float((raw_value >> 12) & 0x07u) / 7.0);\n" " float((raw_value >> 12) & 0x07u) / 7.0);\n"
" }\n"; " }}\n");
} }
break; break;
default: default:
@ -676,64 +684,64 @@ std::string GenerateTextureReinterpretShader(TextureFormat from_format, TextureF
return "{}\n"; return "{}\n";
} }
ss << "}\n"; code.WriteFmt("}}\n");
return ss.str(); return code.GetBuffer();
} }
std::string GenerateEFBRestorePixelShader() std::string GenerateEFBRestorePixelShader()
{ {
std::ostringstream ss; ShaderCode code;
EmitSamplerDeclarations(ss, 0, 2, false); EmitSamplerDeclarations(code, 0, 2, false);
EmitPixelMainDeclaration(ss, 1, 0, "float4", EmitPixelMainDeclaration(code, 1, 0, "float4",
GetAPIType() == APIType::D3D ? "out float depth : SV_Depth, " : ""); GetAPIType() == APIType::D3D ? "out float depth : SV_Depth, " : "");
ss << "{\n" code.WriteFmt("{{\n"
" ocol0 = "; " ocol0 = ");
EmitSampleTexture(ss, 0, "v_tex0"); EmitSampleTexture(code, 0, "v_tex0");
ss << ";\n"; code.WriteFmt(";\n");
ss << " " << (GetAPIType() == APIType::D3D ? "depth" : "gl_FragDepth") << " = "; code.WriteFmt(" {} = ", GetAPIType() == APIType::D3D ? "depth" : "gl_FragDepth");
EmitSampleTexture(ss, 1, "v_tex0"); EmitSampleTexture(code, 1, "v_tex0");
ss << ".r;\n" code.WriteFmt(".r;\n"
"}\n"; "}}\n");
return ss.str(); return code.GetBuffer();
} }
std::string GenerateImGuiVertexShader() std::string GenerateImGuiVertexShader()
{ {
std::ostringstream ss; ShaderCode code;
// Uniform buffer contains the viewport size, and we transform in the vertex shader. // Uniform buffer contains the viewport size, and we transform in the vertex shader.
EmitUniformBufferDeclaration(ss); EmitUniformBufferDeclaration(code);
ss << "{\n" code.WriteFmt("{{\n"
"float2 u_rcp_viewport_size_mul2;\n" "float2 u_rcp_viewport_size_mul2;\n"
"};\n\n"; "}};\n\n");
EmitVertexMainDeclaration(ss, 1, 1, true, 1, 1); EmitVertexMainDeclaration(code, 1, 1, true, 1, 1);
ss << "{\n" code.WriteFmt("{{\n"
" v_tex0 = float3(rawtex0.xy, 0.0);\n" " v_tex0 = float3(rawtex0.xy, 0.0);\n"
" v_col0 = rawcolor0;\n" " v_col0 = rawcolor0;\n"
" opos = float4(rawpos.x * u_rcp_viewport_size_mul2.x - 1.0," " opos = float4(rawpos.x * u_rcp_viewport_size_mul2.x - 1.0,"
" 1.0 - rawpos.y * u_rcp_viewport_size_mul2.y, 0.0, 1.0);\n"; " 1.0 - rawpos.y * u_rcp_viewport_size_mul2.y, 0.0, 1.0);\n");
// NDC space is flipped in Vulkan. // NDC space is flipped in Vulkan.
if (GetAPIType() == APIType::Vulkan) if (GetAPIType() == APIType::Vulkan)
ss << " opos.y = -opos.y;\n"; code.WriteFmt(" opos.y = -opos.y;\n");
ss << "}\n"; code.WriteFmt("}}\n");
return ss.str(); return code.GetBuffer();
} }
std::string GenerateImGuiPixelShader() std::string GenerateImGuiPixelShader()
{ {
std::ostringstream ss; ShaderCode code;
EmitSamplerDeclarations(ss, 0, 1, false); EmitSamplerDeclarations(code, 0, 1, false);
EmitPixelMainDeclaration(ss, 1, 1); EmitPixelMainDeclaration(code, 1, 1);
ss << "{\n" code.WriteFmt("{{\n"
" ocol0 = "; " ocol0 = ");
EmitSampleTexture(ss, 0, "float3(v_tex0.xy, 0.0)"); EmitSampleTexture(code, 0, "float3(v_tex0.xy, 0.0)");
ss << " * v_col0;\n" code.WriteFmt(" * v_col0;\n"
"}\n"; "}}\n");
return ss.str(); return code.GetBuffer();
} }
} // namespace FramebufferShaderGen } // namespace FramebufferShaderGen