301 lines
9.8 KiB
C++
301 lines
9.8 KiB
C++
/*
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* This file is part of the Colobot: Gold Edition source code
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* Copyright (C) 2001-2014, Daniel Roux, EPSITEC SA & TerranovaTeam
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* http://epsiteс.ch; http://colobot.info; http://github.com/colobot
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see http://gnu.org/licenses
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*/
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/**
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* \file graphics/opengl/gl33device.h
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* \brief OpenGL 3.3 implementation - CGL33Device class
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*/
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#pragma once
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#include "graphics/core/device.h"
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#include "graphics/opengl/glutil.h"
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#include "GL/glew.h"
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#include <string>
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#include <vector>
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#include <set>
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#include <map>
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// Graphics module namespace
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namespace Gfx {
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/**
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\class CGL33Device
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\brief Implementation of CDevice interface in OpenGL 3.3
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Provides the concrete implementation of 3D device in OpenGL.
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This class should be initialized (by calling Initialize() ) only after
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setting the video mode by CApplication, once the OpenGL context is defined.
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Because of that, CGLDeviceConfig is outside the CDevice class and must be set
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in CApplication.
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*/
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class CGL33Device : public CDevice
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{
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public:
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CGL33Device(const GLDeviceConfig &config);
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virtual ~CGL33Device();
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virtual void DebugHook() OVERRIDE;
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virtual void DebugLights() OVERRIDE;
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virtual bool Create() OVERRIDE;
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virtual void Destroy() OVERRIDE;
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void ConfigChanged(const GLDeviceConfig &newConfig);
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virtual void BeginScene() OVERRIDE;
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virtual void EndScene() OVERRIDE;
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virtual void Clear() OVERRIDE;
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virtual void SetTransform(TransformType type, const Math::Matrix &matrix) OVERRIDE;
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virtual void SetMaterial(const Material &material) OVERRIDE;
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virtual int GetMaxLightCount() OVERRIDE;
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virtual void SetLight(int index, const Light &light) OVERRIDE;
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virtual void SetLightEnabled(int index, bool enabled) OVERRIDE;
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virtual Texture CreateTexture(CImage *image, const TextureCreateParams ¶ms) OVERRIDE;
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virtual Texture CreateTexture(ImageData *data, const TextureCreateParams ¶ms) OVERRIDE;
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virtual Texture CreateDepthTexture(int width, int height, int depth) OVERRIDE;
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virtual void DestroyTexture(const Texture &texture) OVERRIDE;
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virtual void DestroyAllTextures() OVERRIDE;
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virtual int GetMaxTextureStageCount() OVERRIDE;
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virtual void SetTexture(int index, const Texture &texture) OVERRIDE;
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virtual void SetTexture(int index, unsigned int textureId) OVERRIDE;
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virtual void SetTextureEnabled(int index, bool enabled) OVERRIDE;
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virtual void SetTextureStageParams(int index, const TextureStageParams ¶ms) OVERRIDE;
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virtual void SetTextureStageWrap(int index, Gfx::TexWrapMode wrapS, Gfx::TexWrapMode wrapT) OVERRIDE;
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virtual void SetTextureCoordGeneration(int index, TextureGenerationParams ¶ms) OVERRIDE;
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virtual void DrawPrimitive(PrimitiveType type, const Vertex *vertices , int vertexCount,
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Color color = Color(1.0f, 1.0f, 1.0f, 1.0f)) OVERRIDE;
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virtual void DrawPrimitive(PrimitiveType type, const VertexTex2 *vertices, int vertexCount,
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Color color = Color(1.0f, 1.0f, 1.0f, 1.0f)) OVERRIDE;
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virtual void DrawPrimitive(PrimitiveType type, const VertexCol *vertices , int vertexCount) OVERRIDE;
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virtual unsigned int CreateStaticBuffer(PrimitiveType primitiveType, const Vertex* vertices, int vertexCount) OVERRIDE;
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virtual unsigned int CreateStaticBuffer(PrimitiveType primitiveType, const VertexTex2* vertices, int vertexCount) OVERRIDE;
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virtual unsigned int CreateStaticBuffer(PrimitiveType primitiveType, const VertexCol* vertices, int vertexCount) OVERRIDE;
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virtual void UpdateStaticBuffer(unsigned int bufferId, PrimitiveType primitiveType, const Vertex* vertices, int vertexCount) OVERRIDE;
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virtual void UpdateStaticBuffer(unsigned int bufferId, PrimitiveType primitiveType, const VertexTex2* vertices, int vertexCount) OVERRIDE;
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virtual void UpdateStaticBuffer(unsigned int bufferId, PrimitiveType primitiveType, const VertexCol* vertices, int vertexCount) OVERRIDE;
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virtual void DrawStaticBuffer(unsigned int bufferId) OVERRIDE;
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virtual void DestroyStaticBuffer(unsigned int bufferId) OVERRIDE;
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virtual int ComputeSphereVisibility(const Math::Vector ¢er, float radius) OVERRIDE;
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virtual void SetViewport(int x, int y, int width, int height) OVERRIDE;
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virtual void SetRenderState(RenderState state, bool enabled) OVERRIDE;
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virtual void SetColorMask(bool red, bool green, bool blue, bool alpha) OVERRIDE;
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virtual void SetDepthTestFunc(CompFunc func) OVERRIDE;
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virtual void SetDepthBias(float factor, float units) OVERRIDE;
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virtual void SetAlphaTestFunc(CompFunc func, float refValue) OVERRIDE;
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virtual void SetBlendFunc(BlendFunc srcBlend, BlendFunc dstBlend) OVERRIDE;
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virtual void SetClearColor(const Color &color) OVERRIDE;
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virtual void SetGlobalAmbient(const Color &color) OVERRIDE;
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virtual void SetFogParams(FogMode mode, const Color &color, float start, float end, float density) OVERRIDE;
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virtual void SetCullMode(CullMode mode) OVERRIDE;
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virtual void SetShadeModel(ShadeModel model) OVERRIDE;
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virtual void SetFillMode(FillMode mode) OVERRIDE;
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virtual void InitOffscreenBuffer(int width, int height) OVERRIDE;
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virtual void CopyFramebufferToTexture(Texture& texture, int xOffset, int yOffset, int x, int y, int width, int height) OVERRIDE;
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virtual void* GetFrameBufferPixels() const OVERRIDE;
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private:
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//! Updates position for given light based on transformation matrices
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void UpdateLightPosition(int index);
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//! Updates the texture params for given texture stage
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void UpdateTextureParams(int index);
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//! Updates rendering mode
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void UpdateRenderingMode();
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private:
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//! Current config
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GLDeviceConfig m_config;
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//! Current world matrix
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Math::Matrix m_worldMat;
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//! Current view matrix
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Math::Matrix m_viewMat;
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//! OpenGL modelview matrix = world matrix * view matrix
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Math::Matrix m_modelviewMat;
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//! Current projection matrix
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Math::Matrix m_projectionMat;
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//! The current material
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Material m_material;
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//! Whether lighting is enabled
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bool m_lighting;
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//! Current lights
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std::vector<Light> m_lights;
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//! Current lights enable status
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std::vector<bool> m_lightsEnabled;
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//! Current textures; \c NULL value means unassigned
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std::vector<Texture> m_currentTextures;
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//! Current texture stages enable status
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std::vector<bool> m_texturesEnabled;
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//! Current texture params
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std::vector<TextureStageParams> m_textureStageParams;
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//! Set of all created textures
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std::set<Texture> m_allTextures;
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//! Type of vertex structure
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enum VertexType
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{
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VERTEX_TYPE_NORMAL,
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VERTEX_TYPE_TEX2,
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VERTEX_TYPE_COL,
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};
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//! Info about static VBO buffers
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struct VertexBufferInfo
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{
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PrimitiveType primitiveType;
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GLuint vbo;
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GLuint vao;
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VertexType vertexType;
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int vertexCount;
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unsigned int size;
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};
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//! Detected capabilities
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//! OpenGL version
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int m_glMajor, m_glMinor;
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//! Whether anisotropic filtering is available
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bool m_anisotropyAvailable;
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//! Maximum anisotropy level
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int m_maxAnisotropy;
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//! Map of saved VBO objects
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std::map<unsigned int, VertexBufferInfo> m_vboObjects;
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//! Last ID of VBO object
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unsigned int m_lastVboId;
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// Offscreen buffer
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//! Framebuffer object
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GLuint m_framebuffer;
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//! Color renderbuffer
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GLuint m_colorBuffer;
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//! Depth renderbuffer
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GLuint m_depthBuffer;
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//! Maximum available renderbuffer size
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int m_maxRenderbufferSize;
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//! Shader program
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GLuint m_shaderProgram;
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//! Auxilliary vertex buffers for general rendering
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unsigned int m_vertex;
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unsigned int m_vertexTex2;
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unsigned int m_vertexCol;
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// Uniforms
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//! Projection matrix
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GLint uni_ProjectionMatrix;
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//! View matrix
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GLint uni_ViewMatrix;
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//! Model matrix
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GLint uni_ModelMatrix;
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//! Shadow matrix
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GLint uni_ShadowMatrix;
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//! Normal matrix
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GLint uni_NormalMatrix;
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//! Primary texture sampler
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GLint uni_PrimaryTexture;
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//! Secondary texture sampler
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GLint uni_SecondaryTexture;
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//! Shadow texture sampler
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GLint uni_ShadowTexture;
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GLint uni_PrimaryTextureEnabled;
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GLint uni_SecondaryTextureEnabled;
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GLint uni_ShadowTextureEnabled;
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// Fog parameters
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//! true enables fog
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GLint uni_FogEnabled;
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//! Fog range
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GLint uni_FogRange;
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//! Fog color
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GLint uni_FogColor;
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// Alpha test parameters
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//! true enables alpha test
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GLint uni_AlphaTestEnabled;
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//! Alpha test reference value
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GLint uni_AlphaReference;
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// Lighting parameters
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GLint uni_SmoothShading;
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//! true enables lighting
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GLint uni_LightingEnabled;
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//! Ambient color
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GLint uni_AmbientColor;
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//! Diffuse color
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GLint uni_DiffuseColor;
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//! Specular color
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GLint uni_SpecularColor;
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struct
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{
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//! true enables light
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GLint Enabled;
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//! Light type
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GLint Type;
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//! Position or direction vector
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GLint Position;
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//! Ambient color
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GLint Ambient;
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//! Diffuse color
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GLint Diffuse;
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//! Specular color
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GLint Specular;
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//! Attenuation
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GLint Attenuation;
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} uni_Light[8];
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};
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} // namespace Gfx
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