re organisation

apps/LoopThroughWithOpenGLCompositing/gl/pipeline/OpenGLRenderPass.h

@@ -0,0 +1,47 @@
+#pragma once
+
+#include "OpenGLRenderer.h"
+#include "ShaderTypes.h"
+#include "VideoIOFormat.h"
+
+#include <functional>
+#include <string>
+#include <vector>
+
+class OpenGLRenderPass
+{
+public:
+	using LayerProgram = OpenGLRenderer::LayerProgram;
+	using TextBindingUpdater = std::function<bool(const RuntimeRenderState&, LayerProgram::TextBinding&, std::string&)>;
+	using GlobalParamsUpdater = std::function<bool(const RuntimeRenderState&, unsigned, unsigned)>;
+
+	explicit OpenGLRenderPass(OpenGLRenderer& renderer);
+
+	void Render(
+		bool hasInputSource,
+		const std::vector<RuntimeRenderState>& layerStates,
+		unsigned inputFrameWidth,
+		unsigned inputFrameHeight,
+		unsigned captureTextureWidth,
+		VideoIOPixelFormat inputPixelFormat,
+		unsigned historyCap,
+		const TextBindingUpdater& updateTextBinding,
+		const GlobalParamsUpdater& updateGlobalParams);
+
+private:
+	void RenderDecodePass(unsigned inputFrameWidth, unsigned inputFrameHeight, unsigned captureTextureWidth, VideoIOPixelFormat inputPixelFormat);
+	void RenderShaderProgram(
+		GLuint sourceTexture,
+		GLuint destinationFrameBuffer,
+		LayerProgram& layerProgram,
+		const RuntimeRenderState& state,
+		unsigned inputFrameWidth,
+		unsigned inputFrameHeight,
+		unsigned historyCap,
+		const TextBindingUpdater& updateTextBinding,
+		const GlobalParamsUpdater& updateGlobalParams);
+	void BindLayerTextureAssets(const LayerProgram& layerProgram);
+	void UnbindLayerTextureAssets(const LayerProgram& layerProgram, unsigned historyCap);
+
+	OpenGLRenderer& mRenderer;
+};