- Backend update from GZDoom - mainly for GLES2 support.

2025-05-30 00:41:24 +00:00 · 2021-09-18 12:20:28 +02:00 · 2021-09-18 12:20:28 +02:00 · a3d9cd9a68
commit a3d9cd9a68
parent 11aea1c5d4
66 changed files with 9558 additions and 126 deletions
--- a/source/common/rendering/gles/gles_renderstate.h
+++ b/source/common/rendering/gles/gles_renderstate.h
@ -0,0 +1,152 @@
+// 
+//---------------------------------------------------------------------------
+//
+// Copyright(C) 2009-2016 Christoph Oelckers
+// All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with this program.  If not, see http://www.gnu.org/licenses/
+//
+//--------------------------------------------------------------------------
+//
+
+#ifndef __GL_RENDERSTATE_H
+#define __GL_RENDERSTATE_H
+
+#include <algorithm>
+#include <string.h>
+#include "matrix.h"
+#include "hw_renderstate.h"
+#include "hw_material.h"
+#include "c_cvars.h"
+#include "hwrenderer/data/hw_viewpointuniforms.h"
+
+namespace OpenGLESRenderer
+{
+
+class FShader;
+struct HWSectorPlane;
+
+class FGLRenderState final : public FRenderState
+{
+	uint8_t mLastDepthClamp : 1;
+
+	float mGlossiness, mSpecularLevel;
+	float mShaderTimer;
+
+	int mEffectState;
+	int mTempTM = TM_NORMAL;
+
+	FRenderStyle stRenderStyle;
+	int stSrcBlend, stDstBlend;
+	bool stAlphaTest;
+	bool stSplitEnabled;
+	int stBlendEquation;
+
+	FShader *activeShader;
+
+	int mNumDrawBuffers = 1;
+
+	bool ApplyShader();
+	void ApplyState();
+
+	// Texture binding state
+	FMaterial *lastMaterial = nullptr;
+	int lastClamp = 0;
+	int lastTranslation = 0;
+	int maxBoundMaterial = -1;
+	size_t mLastMappedLightIndex = SIZE_MAX;
+
+	IVertexBuffer *mCurrentVertexBuffer;
+	int mCurrentVertexOffsets[2];	// one per binding point
+	IIndexBuffer *mCurrentIndexBuffer;
+
+	HWViewpointUniforms* mHwUniforms = nullptr;
+
+public:
+
+	FGLRenderState()
+	{
+		Reset();
+	}
+
+	void Reset();
+
+	void ClearLastMaterial()
+	{
+		lastMaterial = nullptr;
+	}
+
+	void ApplyMaterial(FMaterial *mat, int clampmode, int translation, int overrideshader);
+
+	void Apply();
+	void ApplyBuffers();
+	void ApplyBlendMode();
+
+	void ResetVertexBuffer()
+	{
+		// forces rebinding with the next 'apply' call.
+		mCurrentVertexBuffer = nullptr;
+		mCurrentIndexBuffer = nullptr;
+	}
+
+	void SetSpecular(float glossiness, float specularLevel)
+	{
+		mGlossiness = glossiness;
+		mSpecularLevel = specularLevel;
+	}
+
+	void EnableDrawBuffers(int count, bool apply = false) override
+	{
+		/*
+		count = std::min(count, 3);
+		if (mNumDrawBuffers != count)
+		{
+			static GLenum buffers[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
+			glDrawBuffers(count, buffers);
+			mNumDrawBuffers = count;
+		}
+		if (apply) Apply();
+		*/
+	}
+
+	void ToggleState(int state, bool on);
+
+	void ClearScreen() override;
+	void Draw(int dt, int index, int count, bool apply = true) override;
+	void DrawIndexed(int dt, int index, int count, bool apply = true) override;
+
+	bool SetDepthClamp(bool on) override;
+	void SetDepthMask(bool on) override;
+	void SetDepthFunc(int func) override;
+	void SetDepthRange(float min, float max) override;
+	void SetColorMask(bool r, bool g, bool b, bool a) override;
+	void SetStencil(int offs, int op, int flags) override;
+	void SetCulling(int mode) override;
+	void EnableClipDistance(int num, bool state) override;
+	void Clear(int targets) override;
+	void EnableStencil(bool on) override;
+	void SetScissor(int x, int y, int w, int h) override;
+	void SetViewport(int x, int y, int w, int h) override;
+	void EnableDepthTest(bool on) override;
+	void EnableMultisampling(bool on) override;
+	void EnableLineSmooth(bool on) override;
+
+	void ApplyViewport(void* data);
+};
+
+extern FGLRenderState gl_RenderState;
+
+}
+
+#endif