aiden/video-shader-toys
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Initial font work

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Aiden
2026-05-05 23:18:50 +10:00
parent fd0ebb8d40
commit 3e8b472f74
20 changed files with 873 additions and 84 deletions
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53
apps/LoopThroughWithOpenGLCompositing/ShaderCompiler.cpp
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@@ -4,6 +4,7 @@
#include "NativeHandles.h"
#include <fstream>
#include <cctype>
#include <regex>
#include <sstream>
#include <vector>
@@ -30,15 +31,29 @@ std::string SlangCBufferTypeForParameter(ShaderParameterType type)
case ShaderParameterType::Color: return "float4";
case ShaderParameterType::Boolean: return "bool";
case ShaderParameterType::Enum: return "int";
case ShaderParameterType::Text: return "";
}
return "float";
}
std::string CapitalizeIdentifier(const std::string& identifier)
{
if (identifier.empty())
return identifier;
std::string text = identifier;
text[0] = static_cast<char>(std::toupper(static_cast<unsigned char>(text[0])));
return text;
}
std::string BuildParameterUniforms(const std::vector<ShaderParameterDefinition>& parameters)
{
std::ostringstream source;
for (const ShaderParameterDefinition& definition : parameters)
{
if (definition.type == ShaderParameterType::Text)
continue;
source << "\t" << SlangCBufferTypeForParameter(definition.type) << " " << definition.id << ";\n";
}
return source.str();
}
@@ -60,6 +75,42 @@ std::string BuildTextureSamplerDeclarations(const std::vector<ShaderTextureAsset
return source.str();
}
std::string BuildTextSamplerDeclarations(const std::vector<ShaderParameterDefinition>& parameters)
{
std::ostringstream source;
for (const ShaderParameterDefinition& definition : parameters)
{
if (definition.type != ShaderParameterType::Text)
continue;
source << "Sampler2D<float4> " << definition.id << "Texture;\n";
}
if (source.tellp() > 0)
source << "\n";
return source.str();
}
std::string BuildTextHelpers(const std::vector<ShaderParameterDefinition>& parameters)
{
std::ostringstream source;
for (const ShaderParameterDefinition& definition : parameters)
{
if (definition.type != ShaderParameterType::Text)
continue;
const std::string suffix = CapitalizeIdentifier(definition.id);
source
<< "float sample" << suffix << "(float2 uv)\n"
<< "{\n"
<< "\treturn " << definition.id << "Texture.Sample(uv).r;\n"
<< "}\n\n"
<< "float4 draw" << suffix << "(float2 uv, float4 fillColor)\n"
<< "{\n"
<< "\tfloat alpha = sample" << suffix << "(uv) * fillColor.a;\n"
<< "\treturn float4(fillColor.rgb * alpha, alpha);\n"
<< "}\n\n";
}
return source.str();
}
std::string BuildHistorySwitchCases(const std::string& samplerPrefix, unsigned historyLength)
{
std::ostringstream source;
@@ -118,6 +169,8 @@ bool ShaderCompiler::BuildWrapperSlangSource(const ShaderPackage& shaderPackage,
wrapperSource = ReplaceAll(wrapperSource, "{{SOURCE_HISTORY_SAMPLERS}}", BuildHistorySamplerDeclarations("gSourceHistory", mMaxTemporalHistoryFrames));
wrapperSource = ReplaceAll(wrapperSource, "{{TEMPORAL_HISTORY_SAMPLERS}}", BuildHistorySamplerDeclarations("gTemporalHistory", mMaxTemporalHistoryFrames));
wrapperSource = ReplaceAll(wrapperSource, "{{TEXTURE_SAMPLERS}}", BuildTextureSamplerDeclarations(shaderPackage.textureAssets));
wrapperSource = ReplaceAll(wrapperSource, "{{TEXT_SAMPLERS}}", BuildTextSamplerDeclarations(shaderPackage.parameters));
wrapperSource = ReplaceAll(wrapperSource, "{{TEXT_HELPERS}}", BuildTextHelpers(shaderPackage.parameters));
wrapperSource = ReplaceAll(wrapperSource, "{{SOURCE_HISTORY_SWITCH_CASES}}", BuildHistorySwitchCases("gSourceHistory", mMaxTemporalHistoryFrames));
wrapperSource = ReplaceAll(wrapperSource, "{{TEMPORAL_HISTORY_SWITCH_CASES}}", BuildHistorySwitchCases("gTemporalHistory", mMaxTemporalHistoryFrames));
wrapperSource = ReplaceAll(wrapperSource, "{{USER_SHADER_INCLUDE}}", shaderPackage.shaderPath.generic_string());