Method ProcessEffect

trinity/Shader/Tr2Shader.cpp:218–276

-------------------------------------------------------------------------------------- Description: Refreshes effect-dependent variables. --------------------------------------------------------------------------------------

//   Refreshes effect-dependent variables.
// --------------------------------------------------------------------------------------
void Tr2Shader::ProcessEffect()
{
	m_sortValue = 0;
	if( m_effect.techniques.empty() )
	{
		return;
	}
	auto& technique = m_effect.techniques[0];

	if( !technique.passes.empty() )
	{
		// Construct sort value so that the following parameters affect it, in the order given:
		// 1) Number of passes
		// 2) Pixel shader in the first pass
		// 3) Vertex shader in the first pass
		// 4) Render states set in the first pass

		unsigned int ps = technique.passes[0].stageInputs[PIXEL_SHADER].m_shader & 0x3ff;
		unsigned int vs = technique.passes[0].stageInputs[VERTEX_SHADER].m_shader & 0x3ff;
		unsigned int states = technique.passes[0].renderStates & 0x3ff;
		unsigned int numPasses = technique.passes.size() & 0x3;

		m_sortValue = ( numPasses << 30 ) | ( ps << 20 ) | ( vs << 10 ) | states;
	}

#if TRINITY_PLATFORM == TRINITY_DIRECTX12 || TRINITY_PLATFORM == TRINITY_METAL
	USE_MAIN_THREAD_RENDER_CONTEXT();

	for( auto& t : m_effect.techniques )
	{
		for( auto& pass : t.passes )
		{
			if( auto program = renderContext.m_esm.GetShaderProgram( pass.shaderProgram ) )
			{
				pass.indirectLayout = Tr2IndirectDrawBufferLayout( *program, renderContext );
			}
		}
	}

	m_hasVertexBufferAccessInRtShadow = false;
	const BlueSharedString techniqueName = BlueSharedString( "RtShadow" );
	auto effect = GetEffect();
	uint32_t techniqueIndex;
	if( GetTechniqueIndex( techniqueName, techniqueIndex ) )
	{
		for( const auto& library : effect.techniques[techniqueIndex].libraries )
		{
			for( const auto& localRegister : library.localInput.signature.registers )
			{
				if( localRegister.registerType == Tr2ShaderRegisterAL::CONSTANT_BUFFER &&
					localRegister.registerIndex == Tr2Renderer::GetPerObjectRTVertexBufferDataRegister() )
				{
					m_hasVertexBufferAccessInRtShadow = true;
				}
			}
		}
	}
#endif