internal static void InitGL(this EffectPass pass)
{
EffectPassProperties props = PropertyTable.GetValue(pass, x => { return(new EffectPassProperties(x)); });
//EffectPassProperties props = new EffectPassProperties(pass);
//if ()
//PropertyTable.Add(pass, props);
}
private static void SetShaderSamplers(this EffectPass pass, EffectPassProperties props, Shader shader, TextureCollection textures, SamplerStateCollection samplerStates)
{
foreach (var sampler in shader.Samplers)
{
var param = props.Effect.Parameters[sampler.parameter];
var texture = param.Data as Texture;
textures[sampler.textureSlot] = texture;
// If there is a sampler state set it.
if (sampler.state != null)
samplerStates[sampler.samplerSlot] = sampler.state;
}
}
private static void SetShaderSamplers(this EffectPass pass, EffectPassProperties props, Shader shader, TextureCollection textures, SamplerStateCollection samplerStates)
{
foreach (var sampler in shader.Samplers)
{
var param = props.Effect.Parameters[sampler.parameter];
var texture = param.Data as Texture;
textures[sampler.textureSlot] = texture;
// If there is a sampler state set it.
if (sampler.state != null)
{
samplerStates[sampler.samplerSlot] = sampler.state;
}
}
}
public static void ApplyGL(this EffectPass pass)
{
// Set/get the correct shader handle/cleanups.
//
// TODO: This "reapply" if the shader index changes
// trick is sort of ugly. We should probably rework
// this to use some sort of "technique/pass redirect".
//
EffectPassProperties props = PropertyTable.GetValue(pass, x => { return(new EffectPassProperties(pass)); });
if (props.Effect.OnApply())
{
props.Effect.CurrentTechnique.Passes[0].ApplyGL();
return;
}
var device = props.GraphicsDevice;
ShaderProgram program = props.ShaderCache.GetProgram(props.VertexShader, props.PixelShader);
GL.UseProgram(program.Program);
if (props.VertexShader != null)
{
device.VertexShader = props.VertexShader;
// Update the texture parameters.
pass.SetShaderSamplers(props, props.VertexShader, device.VertexTextures, device.VertexSamplerStates);
foreach (int paramIndex in props.VertexShaderParams)
{
EffectParameter param = props.Effect.Parameters[paramIndex];
SetEffectParameter(program, param);
}
// Update the constant buffers.
foreach (int c in props.VertexShader.CBuffers)
{
device.SetConstantBuffer(ShaderStage.Vertex, c, null);
}
}
if (props.PixelShader != null)
{
device.PixelShader = props.PixelShader;
// Update the texture parameters.
pass.SetShaderSamplers(props, props.PixelShader, device.Textures, device.SamplerStates);
foreach (int paramIndex in props.PixelShaderParams)
{
EffectParameter param = props.Effect.Parameters[paramIndex];
SetEffectParameter(program, param);
}
// Update the constant buffers.
foreach (int c in props.PixelShader.CBuffers)
{
device.SetConstantBuffer(ShaderStage.Pixel, c, null);
}
}
// Set the render states if we have some.
if (props.RasterizerState != null)
{
device.RasterizerState = props.RasterizerState;
}
if (props.BlendState != null)
{
device.BlendState = props.BlendState;
}
if (props.DepthStencilState != null)
{
device.DepthStencilState = props.DepthStencilState;
}
}
