Initial commit

engines/hpl1/engine/graphics/Material_Alpha.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/*
+ * Copyright (C) 2006-2010 - Frictional Games
+ *
+ * This file is part of HPL1 Engine.
+ */
+
+#include "hpl1/engine/graphics/Material_Alpha.h"
+#include "hpl1/engine/graphics/GPUProgram.h"
+#include "hpl1/engine/graphics/Renderer2D.h"
+#include "hpl1/engine/graphics/Renderer3D.h"
+#include "hpl1/engine/math/Math.h"
+#include "hpl1/engine/resources/GpuProgramManager.h"
+#include "hpl1/engine/resources/TextureManager.h"
+#include "hpl1/engine/scene/Camera.h"
+#include "hpl1/engine/scene/Light.h"
+
+namespace hpl {
+
+//////////////////////////////////////////////////////////////////////////
+// VERTEX PRORGAM SETUP
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+class cFogProgramSetup : public iMaterialProgramSetup {
+public:
+	void Setup(iGpuProgram *apProgram, cRenderSettings *apRenderSettings) {
+		apProgram->SetFloat("fogStart", apRenderSettings->mfFogStart);
+		apProgram->SetFloat("fogEnd", apRenderSettings->mfFogEnd);
+	}
+};
+
+//////////////////////////////////////////////////////////////////////////
+// CONSTRUCTORS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+cMaterial_Alpha::cMaterial_Alpha(const tString &asName, iLowLevelGraphics *apLowLevelGraphics,
+								 cImageManager *apImageManager, cTextureManager *apTextureManager,
+								 cRenderer2D *apRenderer, cGpuProgramManager *apProgramManager,
+								 eMaterialPicture aPicture, cRenderer3D *apRenderer3D)
+	: iMaterial(asName, apLowLevelGraphics, apImageManager, apTextureManager, apRenderer, apProgramManager,
+				aPicture, apRenderer3D) {
+	mbIsTransperant = true;
+	mbIsGlowing = false;
+	mbUsesLights = false;
+
+	_fogShader = mpProgramManager->CreateProgram("hpl1_Fog_Trans", "hpl1_Fog_Trans_Alpha");
+}
+
+//-----------------------------------------------------------------------
+
+cMaterial_Alpha::~cMaterial_Alpha() {
+	if (_fogShader)
+		mpProgramManager->Destroy(_fogShader);
+}
+
+//-----------------------------------------------------------------------
+
+//////////////////////////////////////////////////////////////////////////
+// PUBLIC METHODS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+iGpuProgram *cMaterial_Alpha::getGpuProgram(eMaterialRenderType aType, int alPass, iLight3D *apLight) {
+	if (mpRenderSettings->mbFogActive)
+		return _fogShader;
+	return nullptr;
+}
+
+iMaterialProgramSetup *cMaterial_Alpha::getGpuProgramSetup(const eMaterialRenderType aType, const int alPass, iLight3D *apLight) {
+	static cFogProgramSetup fogProgramSetup;
+	if (mpRenderSettings->mbFogActive)
+		return &fogProgramSetup;
+	return nullptr;
+}
+
+bool cMaterial_Alpha::VertexProgramUsesLight(eMaterialRenderType aType, int alPass, iLight3D *apLight) {
+	return false;
+}
+
+bool cMaterial_Alpha::VertexProgramUsesEye(eMaterialRenderType aType, int alPass, iLight3D *apLight) {
+	return false;
+}
+
+eMaterialAlphaMode cMaterial_Alpha::GetAlphaMode(eMaterialRenderType aType, int alPass, iLight3D *apLight) {
+	return eMaterialAlphaMode_Solid;
+}
+
+eMaterialBlendMode cMaterial_Alpha::GetBlendMode(eMaterialRenderType aType, int alPass, iLight3D *apLight) {
+	return eMaterialBlendMode_Alpha;
+}
+
+eMaterialChannelMode cMaterial_Alpha::GetChannelMode(eMaterialRenderType aType, int alPass, iLight3D *apLight) {
+	return eMaterialChannelMode_RGBA;
+}
+
+//-----------------------------------------------------------------------
+
+iTexture *cMaterial_Alpha::GetTexture(int alUnit, eMaterialRenderType aType, int alPass, iLight3D *apLight) {
+	if (alUnit == 0)
+		return mvTexture[eMaterialTexture_Diffuse];
+
+	if (alUnit == 1 && mpRenderSettings->mbFogActive) {
+		return mpRenderer3D->GetFogAlphaTexture();
+	}
+
+	return NULL;
+}
+
+eMaterialBlendMode cMaterial_Alpha::GetTextureBlend(int alUnit, eMaterialRenderType aType, int alPass, iLight3D *apLight) {
+	return eMaterialBlendMode_Mul;
+}
+
+//-----------------------------------------------------------------------
+
+bool cMaterial_Alpha::UsesType(eMaterialRenderType aType) {
+	if (aType == eMaterialRenderType_Diffuse)
+		return true;
+	return false;
+}
+
+//-----------------------------------------------------------------------
+
+tTextureTypeList cMaterial_Alpha::GetTextureTypes() {
+	tTextureTypeList vTypes;
+	vTypes.push_back(cTextureType("", eMaterialTexture_Diffuse));
+	vTypes.push_back(cTextureType("_ref", eMaterialTexture_Refraction));
+	vTypes.push_back(cTextureType("_spec", eMaterialTexture_Specular));
+
+	return vTypes;
+}
+
+//-----------------------------------------------------------------------
+} // namespace hpl