private void CreateShaders()
{
foreach (var shaderBytecode in effectBytecode.Stages)
{
var bytecodeRaw = shaderBytecode.Data;
var reflection = effectBytecode.Reflection;
// TODO CACHE Shaders with a bytecode hash
switch (shaderBytecode.Stage)
{
case ShaderStage.Vertex:
vertexShader = new VertexShader(GraphicsDevice.NativeDevice, bytecodeRaw);
// Note: input signature can be reused when reseting device since it only stores non-GPU data,
// so just keep it if it has already been created before.
if (inputSignature == null)
{
inputSignature = EffectInputSignature.GetOrCreateLayout(new EffectInputSignature(shaderBytecode.Id, bytecodeRaw));
}
break;
case ShaderStage.Domain:
domainShader = new DomainShader(GraphicsDevice.NativeDevice, bytecodeRaw);
break;
case ShaderStage.Hull:
hullShader = new HullShader(GraphicsDevice.NativeDevice, bytecodeRaw);
break;
case ShaderStage.Geometry:
if (reflection.ShaderStreamOutputDeclarations != null && reflection.ShaderStreamOutputDeclarations.Count > 0)
{
// Calculate the strides
var soStrides = new List <int>();
foreach (var streamOutputElement in reflection.ShaderStreamOutputDeclarations)
{
for (int i = soStrides.Count; i < (streamOutputElement.Stream + 1); i++)
{
soStrides.Add(0);
}
soStrides[streamOutputElement.Stream] += streamOutputElement.ComponentCount * sizeof(float);
}
var soElements = new StreamOutputElement[0]; // TODO CREATE StreamOutputElement from bytecode.Reflection.ShaderStreamOutputDeclarations
geometryShader = new GeometryShader(GraphicsDevice.NativeDevice, bytecodeRaw, soElements, soStrides.ToArray(), reflection.StreamOutputRasterizedStream);
}
else
{
geometryShader = new GeometryShader(GraphicsDevice.NativeDevice, bytecodeRaw);
}
break;
case ShaderStage.Pixel:
pixelShader = new PixelShader(GraphicsDevice.NativeDevice, bytecodeRaw);
break;
case ShaderStage.Compute:
computeShader = new ComputeShader(GraphicsDevice.NativeDevice, bytecodeRaw);
break;
}
}
}
private void CreateShaders()
{
using (GraphicsDevice.UseOpenGLCreationContext())
{
resourceId = GL.CreateProgram();
// Attach shaders
foreach (var shader in effectBytecode.Stages)
{
ShaderType shaderStage;
switch (shader.Stage)
{
case ShaderStage.Vertex:
shaderStage = ShaderType.VertexShader;
inputSignature = EffectInputSignature.GetOrCreateLayout(new EffectInputSignature(shader.Id, shader.Data));
break;
case ShaderStage.Pixel:
shaderStage = ShaderType.FragmentShader;
break;
default:
throw new Exception("Unsupported shader stage");
break;
}
#if SILICONSTUDIO_PARADOX_GRAPHICS_API_OPENGLES
var shaderSources = BinarySerialization.Read <ShaderLevelBytecode>(shader.Data);
var shaderSource = GraphicsDevice.IsOpenGLES2 ? shaderSources.DataES2 : shaderSources.DataES3;
#else
var shaderSource = shader.GetDataAsString();
#endif
var shaderId = GL.CreateShader(shaderStage);
GL.ShaderSource(shaderId, shaderSource);
GL.CompileShader(shaderId);
int compileStatus;
GL.GetShader(shaderId, ShaderParameter.CompileStatus, out compileStatus);
if (compileStatus != 1)
{
var glErrorMessage = GL.GetShaderInfoLog(shaderId);
throw new InvalidOperationException("Error while compiling GLSL shader. [{0}]".ToFormat(glErrorMessage));
}
GL.AttachShader(resourceId, shaderId);
}
#if !SILICONSTUDIO_PARADOX_GRAPHICS_API_OPENGLES
// Mark program as retrievable (necessary for later GL.GetProgramBinary).
GL.ProgramParameter(resourceId, AssemblyProgramParameterArb.ProgramBinaryRetrievableHint, 1);
#endif
// Link OpenGL program
GL.LinkProgram(resourceId);
// Check link results
int linkStatus;
GL.GetProgram(resourceId, ProgramParameter.LinkStatus, out linkStatus);
if (linkStatus != 1)
{
var infoLog = GL.GetProgramInfoLog(resourceId);
throw new InvalidOperationException("Error while linking GLSL shaders.\n" + infoLog);
}
if (inputSignature.Attributes.Count == 0) // the shader wasn't analyzed yet
{
// Build attributes list for shader signature
int activeAttribCount;
GL.GetProgram(resourceId, ProgramParameter.ActiveAttributes, out activeAttribCount);
for (int activeAttribIndex = 0; activeAttribIndex < activeAttribCount; ++activeAttribIndex)
{
int size;
ActiveAttribType type;
var attribName = GL.GetActiveAttrib(resourceId, activeAttribIndex, out size, out type);
#if SILICONSTUDIO_PLATFORM_ANDROID
var attribIndex = GL.GetAttribLocation(resourceId, new StringBuilder(attribName));
#else
var attribIndex = GL.GetAttribLocation(resourceId, attribName);
#endif
inputSignature.Attributes.Add(attribName, attribIndex);
}
}
CreateReflection(effectBytecode.Reflection, effectBytecode.Stages[0].Stage); // need to regenerate the Uniforms on OpenGL ES
#if SILICONSTUDIO_PARADOX_GRAPHICS_API_OPENGLES
// Allocate a buffer that can cache all the bound parameters
BoundUniforms = new byte[effectBytecode.Reflection.ConstantBuffers[0].Size];
#endif
}
// output the gathered errors
foreach (var message in reflectionResult.Messages)
{
Console.WriteLine(message);
}
if (reflectionResult.HasErrors)
{
throw new Exception("Exception");
}
}
