Render udpates

apps/RenderCadenceCompositor/render/RuntimeShaderRenderer.cpp

@@ -71,6 +71,62 @@ bool RuntimeShaderRenderer::CommitShaderArtifact(const RuntimeShaderArtifact& ar
 	return true;
 }
 
+bool RuntimeShaderRenderer::CommitPreparedProgram(RuntimePreparedShaderProgram& preparedProgram, std::string& error)
+{
+	if (!preparedProgram.succeeded || preparedProgram.program == 0)
+	{
+		error = preparedProgram.error.empty() ? "Prepared runtime shader program is not valid." : preparedProgram.error;
+		return false;
+	}
+
+	if (!EnsureStaticGlResources(error))
+		return false;
+
+	DestroyProgram();
+	mProgram = preparedProgram.program;
+	mVertexShader = preparedProgram.vertexShader;
+	mFragmentShader = preparedProgram.fragmentShader;
+	mArtifact = preparedProgram.artifact;
+	preparedProgram.program = 0;
+	preparedProgram.vertexShader = 0;
+	preparedProgram.fragmentShader = 0;
+	return true;
+}
+
+bool RuntimeShaderRenderer::BuildPreparedProgram(
+	const std::string& layerId,
+	const std::string& sourceFingerprint,
+	const RuntimeShaderArtifact& artifact,
+	RuntimePreparedShaderProgram& preparedProgram)
+{
+	preparedProgram = RuntimePreparedShaderProgram();
+	preparedProgram.layerId = layerId;
+	preparedProgram.shaderId = artifact.shaderId;
+	preparedProgram.sourceFingerprint = sourceFingerprint;
+	preparedProgram.artifact = artifact;
+
+	if (artifact.fragmentShaderSource.empty())
+	{
+		preparedProgram.error = "Cannot prepare an empty fragment shader.";
+		return false;
+	}
+
+	if (!BuildProgram(
+		artifact.fragmentShaderSource,
+		preparedProgram.program,
+		preparedProgram.vertexShader,
+		preparedProgram.fragmentShader,
+		preparedProgram.error))
+	{
+		preparedProgram.ReleaseGl();
+		return false;
+	}
+
+	preparedProgram.succeeded = true;
+	AssignSamplerUniforms(preparedProgram.program);
+	return true;
+}
+
 void RuntimeShaderRenderer::RenderFrame(uint64_t frameIndex, unsigned width, unsigned height)
 {
 	if (mProgram == 0)
@@ -175,7 +231,7 @@ bool RuntimeShaderRenderer::BuildProgram(const std::string& fragmentShaderSource
 	return true;
 }
 
-void RuntimeShaderRenderer::AssignSamplerUniforms(GLuint program) const
+void RuntimeShaderRenderer::AssignSamplerUniforms(GLuint program)
 {
 	glUseProgram(program);
 	const GLint videoInputLocation = glGetUniformLocation(program, "gVideoInput");
@@ -219,7 +275,7 @@ void RuntimeShaderRenderer::BindRuntimeTextures()
 	glActiveTexture(GL_TEXTURE0);
 }
 
-bool RuntimeShaderRenderer::CompileShader(GLenum shaderType, const char* source, GLuint& shader, std::string& error) const
+bool RuntimeShaderRenderer::CompileShader(GLenum shaderType, const char* source, GLuint& shader, std::string& error)
 {
 	shader = glCreateShader(shaderType);
 	glShaderSource(shader, 1, &source, nullptr);