mirror of
https://github.com/id-Software/DOOM-3-BFG.git
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340 lines
13 KiB
C++
340 lines
13 KiB
C++
/*
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===========================================================================
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Doom 3 BFG Edition GPL Source Code
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Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
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Doom 3 BFG Edition Source Code 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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Doom 3 BFG Edition Source Code 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. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Doom 3 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#ifndef __RENDERER_H__
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#define __RENDERER_H__
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/*
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===============================================================================
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idRenderSystem is responsible for managing the screen, which can have
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multiple idRenderWorld and 2D drawing done on it.
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===============================================================================
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*/
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enum stereo3DMode_t
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{
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STEREO3D_OFF,
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// half-resolution, non-square pixel views
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STEREO3D_SIDE_BY_SIDE_COMPRESSED,
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STEREO3D_TOP_AND_BOTTOM_COMPRESSED,
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// two full resolution views side by side, as for a dual cable display
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STEREO3D_SIDE_BY_SIDE,
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STEREO3D_INTERLACED,
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// OpenGL quad buffer
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STEREO3D_QUAD_BUFFER,
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// two full resolution views stacked with a 30 pixel guard band
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// On the PC this can be configured as a custom video timing, but
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// it definitely isn't a consumer level task. The quad_buffer
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// support can handle 720P-3D with apropriate driver support.
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STEREO3D_HDMI_720
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};
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typedef enum
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{
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AUTORENDER_DEFAULTICON = 0,
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AUTORENDER_HELLICON,
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AUTORENDER_DIALOGICON,
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AUTORENDER_MAX
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} autoRenderIconType_t ;
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enum stereoDepthType_t
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{
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STEREO_DEPTH_TYPE_NONE,
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STEREO_DEPTH_TYPE_NEAR,
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STEREO_DEPTH_TYPE_MID,
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STEREO_DEPTH_TYPE_FAR
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};
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enum graphicsVendor_t
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{
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VENDOR_NVIDIA,
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VENDOR_AMD,
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VENDOR_INTEL
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};
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// Contains variables specific to the OpenGL configuration being run right now.
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// These are constant once the OpenGL subsystem is initialized.
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struct glconfig_t
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{
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const char* renderer_string;
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const char* vendor_string;
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const char* version_string;
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const char* extensions_string;
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const char* wgl_extensions_string;
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const char* shading_language_string;
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float glVersion; // atof( version_string )
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graphicsVendor_t vendor;
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int maxTextureSize; // queried from GL
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int maxTextureCoords;
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int maxTextureImageUnits;
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int uniformBufferOffsetAlignment;
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float maxTextureAnisotropy;
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int colorBits;
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int depthBits;
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int stencilBits;
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bool multitextureAvailable;
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bool directStateAccess;
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bool textureCompressionAvailable;
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bool anisotropicFilterAvailable;
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bool textureLODBiasAvailable;
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bool seamlessCubeMapAvailable;
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bool sRGBFramebufferAvailable;
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bool vertexBufferObjectAvailable;
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bool mapBufferRangeAvailable;
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bool vertexArrayObjectAvailable;
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bool drawElementsBaseVertexAvailable;
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bool fragmentProgramAvailable;
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bool glslAvailable;
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bool uniformBufferAvailable;
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bool twoSidedStencilAvailable;
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bool depthBoundsTestAvailable;
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bool syncAvailable;
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bool timerQueryAvailable;
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bool occlusionQueryAvailable;
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bool debugOutputAvailable;
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bool swapControlTearAvailable;
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stereo3DMode_t stereo3Dmode;
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int nativeScreenWidth; // this is the native screen width resolution of the renderer
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int nativeScreenHeight; // this is the native screen height resolution of the renderer
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int displayFrequency;
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int isFullscreen; // monitor number
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bool isStereoPixelFormat;
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bool stereoPixelFormatAvailable;
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int multisamples;
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// Screen separation for stereoscopic rendering is set based on this.
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// PC vid code sets this, converting from diagonals / inches / whatever as needed.
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// If the value can't be determined, set something reasonable, like 50cm.
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float physicalScreenWidthInCentimeters;
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float pixelAspect;
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GLuint global_vao;
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};
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struct emptyCommand_t;
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bool R_IsInitialized();
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const int SMALLCHAR_WIDTH = 8;
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const int SMALLCHAR_HEIGHT = 16;
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const int BIGCHAR_WIDTH = 16;
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const int BIGCHAR_HEIGHT = 16;
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// all drawing is done to a 640 x 480 virtual screen size
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// and will be automatically scaled to the real resolution
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const int SCREEN_WIDTH = 640;
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const int SCREEN_HEIGHT = 480;
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extern idCVar r_useVirtualScreenResolution;
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class idRenderWorld;
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class idRenderSystem
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{
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public:
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virtual ~idRenderSystem() {}
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// set up cvars and basic data structures, but don't
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// init OpenGL, so it can also be used for dedicated servers
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virtual void Init() = 0;
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// only called before quitting
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virtual void Shutdown() = 0;
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virtual void ResetGuiModels() = 0;
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virtual void InitOpenGL() = 0;
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virtual void ShutdownOpenGL() = 0;
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virtual bool IsOpenGLRunning() const = 0;
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virtual bool IsFullScreen() const = 0;
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virtual int GetWidth() const = 0;
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virtual int GetHeight() const = 0;
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virtual int GetVirtualWidth() const = 0;
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virtual int GetVirtualHeight() const = 0;
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// return w/h of a single pixel. This will be 1.0 for normal cases.
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// A side-by-side stereo 3D frame will have a pixel aspect of 0.5.
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// A top-and-bottom stereo 3D frame will have a pixel aspect of 2.0
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virtual float GetPixelAspect() const = 0;
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// This is used to calculate stereoscopic screen offset for a given interocular distance.
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virtual float GetPhysicalScreenWidthInCentimeters() const = 0;
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// GetWidth() / GetHeight() return the size of a single eye
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// view, which may be replicated twice in a stereo display
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virtual stereo3DMode_t GetStereo3DMode() const = 0;
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virtual bool IsStereoScopicRenderingSupported() const = 0;
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virtual stereo3DMode_t GetStereoScopicRenderingMode() const = 0;
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virtual void EnableStereoScopicRendering( const stereo3DMode_t mode ) const = 0;
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virtual bool HasQuadBufferSupport() const = 0;
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// allocate a renderWorld to be used for drawing
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virtual idRenderWorld* AllocRenderWorld() = 0;
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virtual void FreeRenderWorld( idRenderWorld* rw ) = 0;
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// All data that will be used in a level should be
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// registered before rendering any frames to prevent disk hits,
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// but they can still be registered at a later time
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// if necessary.
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virtual void BeginLevelLoad() = 0;
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virtual void EndLevelLoad() = 0;
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virtual void Preload( const idPreloadManifest& manifest, const char* mapName ) = 0;
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virtual void LoadLevelImages() = 0;
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virtual void BeginAutomaticBackgroundSwaps( autoRenderIconType_t icon = AUTORENDER_DEFAULTICON ) = 0;
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virtual void EndAutomaticBackgroundSwaps() = 0;
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virtual bool AreAutomaticBackgroundSwapsRunning( autoRenderIconType_t* icon = NULL ) const = 0;
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// font support
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virtual class idFont* RegisterFont( const char* fontName ) = 0;
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virtual void ResetFonts() = 0;
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virtual void SetColor( const idVec4& rgba ) = 0;
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virtual void SetColor4( float r, float g, float b, float a )
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{
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SetColor( idVec4( r, g, b, a ) );
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}
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virtual uint32 GetColor() = 0;
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virtual void SetGLState( const uint64 glState ) = 0;
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virtual void DrawFilled( const idVec4& color, float x, float y, float w, float h ) = 0;
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virtual void DrawStretchPic( float x, float y, float w, float h, float s1, float t1, float s2, float t2, const idMaterial* material ) = 0;
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void DrawStretchPic( const idVec4& rect, const idVec4& st, const idMaterial* material )
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{
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DrawStretchPic( rect.x, rect.y, rect.z, rect.w, st.x, st.y, st.z, st.w, material );
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}
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virtual void DrawStretchPic( const idVec4& topLeft, const idVec4& topRight, const idVec4& bottomRight, const idVec4& bottomLeft, const idMaterial* material ) = 0;
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virtual void DrawStretchTri( const idVec2& p1, const idVec2& p2, const idVec2& p3, const idVec2& t1, const idVec2& t2, const idVec2& t3, const idMaterial* material ) = 0;
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virtual idDrawVert* AllocTris( int numVerts, const triIndex_t* indexes, int numIndexes, const idMaterial* material, const stereoDepthType_t stereoType = STEREO_DEPTH_TYPE_NONE ) = 0;
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virtual void PrintMemInfo( MemInfo_t* mi ) = 0;
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virtual void DrawSmallChar( int x, int y, int ch ) = 0;
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virtual void DrawSmallStringExt( int x, int y, const char* string, const idVec4& setColor, bool forceColor ) = 0;
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virtual void DrawBigChar( int x, int y, int ch ) = 0;
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virtual void DrawBigStringExt( int x, int y, const char* string, const idVec4& setColor, bool forceColor ) = 0;
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// dump all 2D drawing so far this frame to the demo file
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virtual void WriteDemoPics() = 0;
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// draw the 2D pics that were saved out with the current demo frame
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virtual void DrawDemoPics() = 0;
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// Performs final closeout of any gui models being defined.
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//
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// Waits for the previous GPU rendering to complete and vsync.
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//
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// Returns the head of the linked command list that was just closed off.
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//
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// Returns timing information from the previous frame.
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//
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// After this is called, new command buffers can be built up in parallel
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// with the rendering of the closed off command buffers by RenderCommandBuffers()
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virtual const emptyCommand_t* SwapCommandBuffers( uint64* frontEndMicroSec, uint64* backEndMicroSec, uint64* shadowMicroSec, uint64* gpuMicroSec ) = 0;
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// SwapCommandBuffers operation can be split in two parts for non-smp rendering
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// where the GPU is idled intentionally for minimal latency.
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virtual void SwapCommandBuffers_FinishRendering( uint64* frontEndMicroSec, uint64* backEndMicroSec, uint64* shadowMicroSec, uint64* gpuMicroSec ) = 0;
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virtual const emptyCommand_t* SwapCommandBuffers_FinishCommandBuffers() = 0;
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// issues GPU commands to render a built up list of command buffers returned
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// by SwapCommandBuffers(). No references should be made to the current frameData,
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// so new scenes and GUIs can be built up in parallel with the rendering.
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virtual void RenderCommandBuffers( const emptyCommand_t* commandBuffers ) = 0;
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// aviDemo uses this.
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// Will automatically tile render large screen shots if necessary
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// Samples is the number of jittered frames for anti-aliasing
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// If ref == NULL, common->UpdateScreen will be used
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// This will perform swapbuffers, so it is NOT an approppriate way to
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// generate image files that happen during gameplay, as for savegame
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// markers. Use WriteRender() instead.
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virtual void TakeScreenshot( int width, int height, const char* fileName, int samples, struct renderView_s* ref ) = 0;
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// the render output can be cropped down to a subset of the real screen, as
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// for save-game reviews and split-screen multiplayer. Users of the renderer
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// will not know the actual pixel size of the area they are rendering to
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// the x,y,width,height values are in virtual SCREEN_WIDTH / SCREEN_HEIGHT coordinates
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// to render to a texture, first set the crop size with makePowerOfTwo = true,
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// then perform all desired rendering, then capture to an image
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// if the specified physical dimensions are larger than the current cropped region, they will be cut down to fit
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virtual void CropRenderSize( int width, int height ) = 0;
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virtual void CaptureRenderToImage( const char* imageName, bool clearColorAfterCopy = false ) = 0;
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// fixAlpha will set all the alpha channel values to 0xff, which allows screen captures
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// to use the default tga loading code without having dimmed down areas in many places
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virtual void CaptureRenderToFile( const char* fileName, bool fixAlpha = false ) = 0;
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virtual void UnCrop() = 0;
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// the image has to be already loaded ( most straightforward way would be through a FindMaterial )
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// texture filter / mipmapping / repeat won't be modified by the upload
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// returns false if the image wasn't found
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virtual bool UploadImage( const char* imageName, const byte* data, int width, int height ) = 0;
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// consoles switch stereo 3D eye views each 60 hz frame
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virtual int GetFrameCount() const = 0;
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};
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extern idRenderSystem* renderSystem;
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//
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// functions mainly intended for editor and dmap integration
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//
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// for use by dmap to do the carving-on-light-boundaries and for the editor for display
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void R_LightProjectionMatrix( const idVec3& origin, const idPlane& rearPlane, idVec4 mat[4] );
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// used by the view shot taker
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void R_ScreenshotFilename( int& lastNumber, const char* base, idStr& fileName );
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#endif /* !__RENDERER_H__ */
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