public VertexShader(string filePath)
{
FilePath = filePath;
SourceCode = File.ReadAllText(FilePath);
VertexShaderObjectHandle = SDL_gpu.GPU_CompileShader(SDL_gpu.GPU_ShaderEnum.GPU_VERTEX_SHADER, SourceCode);
if (VertexShaderObjectHandle == 0)
{
throw new ShaderException("Compilation failed.", SDL_gpu.GPU_GetShaderMessage());
}
CompileAndSetDefaultPixelShader();
if (PixelShaderObjectHandle == 0)
{
throw new ShaderException(
"Default Chroma pixel shader compilation failed. " +
"Report an issue - be sure to include GLSL errors or I'll f**k you up just like I did with this framework.", SDL_gpu.GPU_GetShaderMessage());
}
ProgramHandle = SDL_gpu.GPU_LinkShaders(PixelShaderObjectHandle, VertexShaderObjectHandle);
if (ProgramHandle == 0)
{
throw new ShaderException("Linkage failed.", SDL_gpu.GPU_GetShaderMessage());
}
CreateShaderBlock();
}
private void TryCompileVertexShader()
{
VertexShaderSourceCode = File.ReadAllText(VertexShaderFilePath);
VertexShaderObjectHandle = SDL_gpu.GPU_CompileShader(SDL_gpu.GPU_ShaderEnum.GPU_VERTEX_SHADER, VertexShaderSourceCode);
if (VertexShaderObjectHandle == 0)
{
throw new ShaderException("Vertex shader compilation failed.", SDL_gpu.GPU_GetShaderMessage());
}
}
private void TryCompilePixelShader()
{
PixelShaderSourceCode = File.ReadAllText(PixelShaderFilePath);
PixelShaderObjectHandle = SDL_gpu.GPU_CompileShader(SDL_gpu.GPU_ShaderEnum.GPU_PIXEL_SHADER, PixelShaderSourceCode);
if (PixelShaderObjectHandle == 0)
{
throw new ShaderException("Pixel shader compilation failed.", SDL_gpu.GPU_GetShaderMessage());
}
}
protected virtual void CompileAndSetDefaultPixelShader()
{
EnsureNotDisposed();
var shaderSourceStream = Assembly.GetExecutingAssembly()
.GetManifestResourceStream("Chroma.Resources.shader.default.frag");
using var sr = new StreamReader(shaderSourceStream !);
PixelShaderObjectHandle =
SDL_gpu.GPU_CompileShader(SDL_gpu.GPU_ShaderEnum.GPU_PIXEL_SHADER, sr.ReadToEnd());
}
protected void CompileAndSetDefaultVertexShader()
{
EnsureNotDisposed();
var shaderSourceStream = Assembly.GetExecutingAssembly()
.GetManifestResourceStream("Chroma.Resources.shader.default.vert");
using var sr = new StreamReader(shaderSourceStream);
VertexShaderObjectHandle =
SDL_gpu.GPU_CompileShader(SDL_gpu.GPU_ShaderEnum.GPU_VERTEX_SHADER, sr.ReadToEnd());
}