diff options
Diffstat (limited to 'src/renderergl2/tr_local.h')
| -rw-r--r-- | src/renderergl2/tr_local.h | 2422 |
1 files changed, 2422 insertions, 0 deletions
diff --git a/src/renderergl2/tr_local.h b/src/renderergl2/tr_local.h new file mode 100644 index 0000000..39df925 --- /dev/null +++ b/src/renderergl2/tr_local.h @@ -0,0 +1,2422 @@ +/* +=========================================================================== +Copyright (C) 1999-2005 Id Software, Inc. +Copyright (C) 2000-2013 Darklegion Development +Copyright (C) 2015-2019 GrangerHub + +This file is part of Tremulous. + +Tremulous 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. + +Tremulous 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 Tremulous; if not, see <https://www.gnu.org/licenses/> + +=========================================================================== +*/ + + +#ifndef TR_LOCAL_H +#define TR_LOCAL_H + +#include <stdbool.h> + +#include "qcommon/cvar.h" +#include "qcommon/q_shared.h" +#include "qcommon/qfiles.h" +#include "qcommon/qcommon.h" +#include "renderercommon/tr_public.h" +#include "renderercommon/tr_common.h" +#include "tr_extratypes.h" +#include "tr_extramath.h" +#include "tr_fbo.h" +#include "tr_postprocess.h" +#include "renderercommon/iqm.h" + +#define GL_INDEX_TYPE GL_UNSIGNED_INT +typedef unsigned int glIndex_t; + +#define BUFFER_OFFSET(i) ((char *)NULL + (i)) + +// 14 bits +// can't be increased without changing bit packing for drawsurfs +// see QSORT_SHADERNUM_SHIFT +#define SHADERNUM_BITS 14 +#define MAX_SHADERS (1<<SHADERNUM_BITS) + +#define MAX_FBOS 64 +#define MAX_VISCOUNTS 5 +#define MAX_VAOS 4096 + +#define MAX_CALC_PSHADOWS 64 +#define MAX_DRAWN_PSHADOWS 16 // do not increase past 32, because bit flags are used on surfaces +#define PSHADOW_MAP_SIZE 512 + +typedef struct cubemap_s { + char name[MAX_QPATH]; + vec3_t origin; + float parallaxRadius; + image_t *image; +} cubemap_t; + +typedef struct dlight_s { + vec3_t origin; + vec3_t color; // range from 0.0 to 1.0, should be color normalized + float radius; + + vec3_t transformed; // origin in local coordinate system + int additive; // texture detail is lost tho when the lightmap is dark +} dlight_t; + + +// a trRefEntity_t has all the information passed in by +// the client game, as well as some locally derived info +typedef struct { + refEntity_t e; + + float axisLength; // compensate for non-normalized axis + + bool needDlights; // true for bmodels that touch a dlight + bool lightingCalculated; + bool mirrored; // mirrored matrix, needs reversed culling + vec3_t lightDir; // normalized direction towards light, in world space + vec3_t modelLightDir; // normalized direction towards light, in model space + vec3_t ambientLight; // color normalized to 0-255 + int ambientLightInt; // 32 bit rgba packed + vec3_t directedLight; +} trRefEntity_t; + + +typedef struct { + vec3_t origin; // in world coordinates + vec3_t axis[3]; // orientation in world + vec3_t viewOrigin; // viewParms->or.origin in local coordinates + float modelMatrix[16]; + float transformMatrix[16]; +} orientationr_t; + +// Ensure this is >= the ATTR_INDEX_COUNT enum below +#define VAO_MAX_ATTRIBS 16 + +typedef enum +{ + VAO_USAGE_STATIC, + VAO_USAGE_DYNAMIC +} vaoUsage_t; + +typedef struct vaoAttrib_s +{ + uint32_t enabled; + uint32_t count; + uint32_t type; + uint32_t normalized; + uint32_t stride; + uint32_t offset; +} +vaoAttrib_t; + +typedef struct vao_s +{ + char name[MAX_QPATH]; + + uint32_t vao; + + uint32_t vertexesVBO; + int vertexesSize; // amount of memory data allocated for all vertices in bytes + vaoAttrib_t attribs[VAO_MAX_ATTRIBS]; + + uint32_t frameSize; // bytes to skip per frame when doing vertex animation + + uint32_t indexesIBO; + int indexesSize; // amount of memory data allocated for all triangles in bytes +} vao_t; + +//=============================================================================== + +typedef enum { + SS_BAD, + SS_PORTAL, // mirrors, portals, viewscreens + SS_ENVIRONMENT, // sky box + SS_OPAQUE, // opaque + + SS_DECAL, // scorch marks, etc. + SS_SEE_THROUGH, // ladders, grates, grills that may have small blended edges + // in addition to alpha test + SS_BANNER, + + SS_FOG, + + SS_UNDERWATER, // for items that should be drawn in front of the water plane + + SS_BLEND0, // regular transparency and filters + SS_BLEND1, // generally only used for additive type effects + SS_BLEND2, + SS_BLEND3, + + SS_BLEND6, + SS_STENCIL_SHADOW, + SS_ALMOST_NEAREST, // gun smoke puffs + + SS_NEAREST // blood blobs +} shaderSort_t; + + +#define MAX_SHADER_STAGES 8 + +typedef enum { + GF_NONE, + + GF_SIN, + GF_SQUARE, + GF_TRIANGLE, + GF_SAWTOOTH, + GF_INVERSE_SAWTOOTH, + + GF_NOISE + +} genFunc_t; + + +typedef enum { + DEFORM_NONE, + DEFORM_WAVE, + DEFORM_NORMALS, + DEFORM_BULGE, + DEFORM_MOVE, + DEFORM_PROJECTION_SHADOW, + DEFORM_AUTOSPRITE, + DEFORM_AUTOSPRITE2, + DEFORM_TEXT0, + DEFORM_TEXT1, + DEFORM_TEXT2, + DEFORM_TEXT3, + DEFORM_TEXT4, + DEFORM_TEXT5, + DEFORM_TEXT6, + DEFORM_TEXT7 +} deform_t; + +// deformVertexes types that can be handled by the GPU +typedef enum +{ + // do not edit: same as genFunc_t + + DGEN_NONE, + DGEN_WAVE_SIN, + DGEN_WAVE_SQUARE, + DGEN_WAVE_TRIANGLE, + DGEN_WAVE_SAWTOOTH, + DGEN_WAVE_INVERSE_SAWTOOTH, + DGEN_WAVE_NOISE, + + // do not edit until this line + + DGEN_BULGE, + DGEN_MOVE +} deformGen_t; + +typedef enum { + AGEN_IDENTITY, + AGEN_SKIP, + AGEN_ENTITY, + AGEN_ONE_MINUS_ENTITY, + AGEN_VERTEX, + AGEN_ONE_MINUS_VERTEX, + AGEN_LIGHTING_SPECULAR, + AGEN_WAVEFORM, + AGEN_PORTAL, + AGEN_CONST, +} alphaGen_t; + +typedef enum { + CGEN_BAD, + CGEN_IDENTITY_LIGHTING, // tr.identityLight + CGEN_IDENTITY, // always (1,1,1,1) + CGEN_ENTITY, // grabbed from entity's modulate field + CGEN_ONE_MINUS_ENTITY, // grabbed from 1 - entity.modulate + CGEN_EXACT_VERTEX, // tess.vertexColors + CGEN_VERTEX, // tess.vertexColors * tr.identityLight + CGEN_EXACT_VERTEX_LIT, // like CGEN_EXACT_VERTEX but takes a light direction from the lightgrid + CGEN_VERTEX_LIT, // like CGEN_VERTEX but takes a light direction from the lightgrid + CGEN_ONE_MINUS_VERTEX, + CGEN_WAVEFORM, // programmatically generated + CGEN_LIGHTING_DIFFUSE, + CGEN_FOG, // standard fog + CGEN_CONST // fixed color +} colorGen_t; + +typedef enum { + TCGEN_BAD, + TCGEN_IDENTITY, // clear to 0,0 + TCGEN_LIGHTMAP, + TCGEN_TEXTURE, + TCGEN_ENVIRONMENT_MAPPED, + TCGEN_FOG, + TCGEN_VECTOR // S and T from world coordinates +} texCoordGen_t; + +typedef enum { + ACFF_NONE, + ACFF_MODULATE_RGB, + ACFF_MODULATE_RGBA, + ACFF_MODULATE_ALPHA +} acff_t; + +typedef struct { + genFunc_t func; + + float base; + float amplitude; + float phase; + float frequency; +} waveForm_t; + +#define TR_MAX_TEXMODS 4 + +typedef enum { + TMOD_NONE, + TMOD_TRANSFORM, + TMOD_TURBULENT, + TMOD_SCROLL, + TMOD_SCALE, + TMOD_STRETCH, + TMOD_ROTATE, + TMOD_ENTITY_TRANSLATE +} texMod_t; + +#define MAX_SHADER_DEFORMS 3 +typedef struct { + deform_t deformation; // vertex coordinate modification type + + vec3_t moveVector; + waveForm_t deformationWave; + float deformationSpread; + + float bulgeWidth; + float bulgeHeight; + float bulgeSpeed; +} deformStage_t; + + +typedef struct { + texMod_t type; + + // used for TMOD_TURBULENT and TMOD_STRETCH + waveForm_t wave; + + // used for TMOD_TRANSFORM + float matrix[2][2]; // s' = s * m[0][0] + t * m[1][0] + trans[0] + float translate[2]; // t' = s * m[0][1] + t * m[0][1] + trans[1] + + // used for TMOD_SCALE + float scale[2]; // s *= scale[0] + // t *= scale[1] + + // used for TMOD_SCROLL + float scroll[2]; // s' = s + scroll[0] * time + // t' = t + scroll[1] * time + + // + = clockwise + // - = counterclockwise + float rotateSpeed; + +} texModInfo_t; + + +#define MAX_IMAGE_ANIMATIONS 8 + +typedef struct { + image_t *image[MAX_IMAGE_ANIMATIONS]; + int numImageAnimations; + float imageAnimationSpeed; + + texCoordGen_t tcGen; + vec3_t tcGenVectors[2]; + + int numTexMods; + texModInfo_t *texMods; + + int videoMapHandle; + bool isLightmap; + bool isVideoMap; +} textureBundle_t; + +enum +{ + TB_COLORMAP = 0, + TB_DIFFUSEMAP = 0, + TB_LIGHTMAP = 1, + TB_LEVELSMAP = 1, + TB_SHADOWMAP3 = 1, + TB_NORMALMAP = 2, + TB_DELUXEMAP = 3, + TB_SHADOWMAP2 = 3, + TB_SPECULARMAP = 4, + TB_SHADOWMAP = 5, + TB_CUBEMAP = 6, + TB_SHADOWMAP4 = 6, + NUM_TEXTURE_BUNDLES = 7 +}; + +typedef enum +{ + // material shader stage types + ST_COLORMAP = 0, // vanilla Q3A style shader treatening + ST_DIFFUSEMAP = 0, // treat color and diffusemap the same + ST_NORMALMAP, + ST_NORMALPARALLAXMAP, + ST_SPECULARMAP, + ST_GLSL +} stageType_t; + +typedef struct { + bool active; + + textureBundle_t bundle[NUM_TEXTURE_BUNDLES]; + + waveForm_t rgbWave; + colorGen_t rgbGen; + + waveForm_t alphaWave; + alphaGen_t alphaGen; + + byte constantColor[4]; // for CGEN_CONST and AGEN_CONST + + unsigned stateBits; // GLS_xxxx mask + + acff_t adjustColorsForFog; + + bool isDetail; + + stageType_t type; + struct shaderProgram_s *glslShaderGroup; + int glslShaderIndex; + + vec4_t normalScale; + vec4_t specularScale; + +} shaderStage_t; + +struct shaderCommands_s; + +typedef enum { + CT_FRONT_SIDED, + CT_BACK_SIDED, + CT_TWO_SIDED +} cullType_t; + +typedef enum { + FP_NONE, // surface is translucent and will just be adjusted properly + FP_EQUAL, // surface is opaque but possibly alpha tested + FP_LE // surface is trnaslucent, but still needs a fog pass (fog surface) +} fogPass_t; + +typedef struct { + float cloudHeight; + image_t *outerbox[6], *innerbox[6]; +} skyParms_t; + +typedef struct { + vec3_t color; + float depthForOpaque; +} fogParms_t; + + +typedef struct shader_s { + char name[MAX_QPATH]; // game path, including extension + int lightmapIndex; // for a shader to match, both name and lightmapIndex must match + + int index; // this shader == tr.shaders[index] + int sortedIndex; // this shader == tr.sortedShaders[sortedIndex] + + float sort; // lower numbered shaders draw before higher numbered + + bool defaultShader; // we want to return index 0 if the shader failed to + // load for some reason, but R_FindShader should + // still keep a name allocated for it, so if + // something calls RE_RegisterShader again with + // the same name, we don't try looking for it again + + bool explicitlyDefined; // found in a .shader file + + int surfaceFlags; // if explicitlyDefined, this will have SURF_* flags + int contentFlags; + + bool entityMergable; // merge across entites optimizable (smoke, blood) + + bool isSky; + skyParms_t sky; + fogParms_t fogParms; + + float portalRange; // distance to fog out at + bool isPortal; + + cullType_t cullType; // CT_FRONT_SIDED, CT_BACK_SIDED, or CT_TWO_SIDED + bool polygonOffset; // set for decals and other items that must be offset + bool noMipMaps; // for console fonts, 2D elements, etc. + bool noPicMip; // for images that must always be full resolution + + fogPass_t fogPass; // draw a blended pass, possibly with depth test equals + + int vertexAttribs; // not all shaders will need all data to be gathered + + int numDeforms; + deformStage_t deforms[MAX_SHADER_DEFORMS]; + + int numUnfoggedPasses; + shaderStage_t *stages[MAX_SHADER_STAGES]; + + void (*optimalStageIteratorFunc)( void ); + + double clampTime; // time this shader is clamped to + double timeOffset; // current time offset for this shader + + struct shader_s *remappedShader; // current shader this one is remapped too + + struct shader_s *next; +} shader_t; + +bool ShaderRequiresCPUDeforms(const shader_t*); + +enum +{ + ATTR_INDEX_POSITION = 0, + ATTR_INDEX_TEXCOORD = 1, + ATTR_INDEX_LIGHTCOORD = 2, + ATTR_INDEX_TANGENT = 3, + ATTR_INDEX_NORMAL = 4, + ATTR_INDEX_COLOR = 5, + ATTR_INDEX_PAINTCOLOR = 6, + ATTR_INDEX_LIGHTDIRECTION = 7, + ATTR_INDEX_BONE_INDEXES = 8, + ATTR_INDEX_BONE_WEIGHTS = 9, + + // GPU vertex animations + ATTR_INDEX_POSITION2 = 10, + ATTR_INDEX_TANGENT2 = 11, + ATTR_INDEX_NORMAL2 = 12, + + ATTR_INDEX_COUNT = 13 +}; + +enum +{ + ATTR_POSITION = 1 << ATTR_INDEX_POSITION, + ATTR_TEXCOORD = 1 << ATTR_INDEX_TEXCOORD, + ATTR_LIGHTCOORD = 1 << ATTR_INDEX_LIGHTCOORD, + ATTR_TANGENT = 1 << ATTR_INDEX_TANGENT, + ATTR_NORMAL = 1 << ATTR_INDEX_NORMAL, + ATTR_COLOR = 1 << ATTR_INDEX_COLOR, + ATTR_PAINTCOLOR = 1 << ATTR_INDEX_PAINTCOLOR, + ATTR_LIGHTDIRECTION = 1 << ATTR_INDEX_LIGHTDIRECTION, + ATTR_BONE_INDEXES = 1 << ATTR_INDEX_BONE_INDEXES, + ATTR_BONE_WEIGHTS = 1 << ATTR_INDEX_BONE_WEIGHTS, + + // for .md3 interpolation + ATTR_POSITION2 = 1 << ATTR_INDEX_POSITION2, + ATTR_TANGENT2 = 1 << ATTR_INDEX_TANGENT2, + ATTR_NORMAL2 = 1 << ATTR_INDEX_NORMAL2, + + ATTR_DEFAULT = ATTR_POSITION, + ATTR_BITS = ATTR_POSITION | + ATTR_TEXCOORD | + ATTR_LIGHTCOORD | + ATTR_TANGENT | + ATTR_NORMAL | + ATTR_COLOR | + ATTR_PAINTCOLOR | + ATTR_LIGHTDIRECTION | + ATTR_BONE_INDEXES | + ATTR_BONE_WEIGHTS | + ATTR_POSITION2 | + ATTR_TANGENT2 | + ATTR_NORMAL2 +}; + +enum +{ + GENERICDEF_USE_DEFORM_VERTEXES = 0x0001, + GENERICDEF_USE_TCGEN_AND_TCMOD = 0x0002, + GENERICDEF_USE_VERTEX_ANIMATION = 0x0004, + GENERICDEF_USE_FOG = 0x0008, + GENERICDEF_USE_RGBAGEN = 0x0010, + GENERICDEF_ALL = 0x001F, + GENERICDEF_COUNT = 0x0020, +}; + +enum +{ + FOGDEF_USE_DEFORM_VERTEXES = 0x0001, + FOGDEF_USE_VERTEX_ANIMATION = 0x0002, + FOGDEF_ALL = 0x0003, + FOGDEF_COUNT = 0x0004, +}; + +enum +{ + DLIGHTDEF_USE_DEFORM_VERTEXES = 0x0001, + DLIGHTDEF_ALL = 0x0001, + DLIGHTDEF_COUNT = 0x0002, +}; + +enum +{ + LIGHTDEF_USE_LIGHTMAP = 0x0001, + LIGHTDEF_USE_LIGHT_VECTOR = 0x0002, + LIGHTDEF_USE_LIGHT_VERTEX = 0x0003, + LIGHTDEF_LIGHTTYPE_MASK = 0x0003, + LIGHTDEF_ENTITY = 0x0004, + LIGHTDEF_USE_TCGEN_AND_TCMOD = 0x0008, + LIGHTDEF_USE_PARALLAXMAP = 0x0010, + LIGHTDEF_USE_SHADOWMAP = 0x0020, + LIGHTDEF_ALL = 0x003F, + LIGHTDEF_COUNT = 0x0040 +}; + +enum +{ + GLSL_INT, + GLSL_FLOAT, + GLSL_FLOAT5, + GLSL_VEC2, + GLSL_VEC3, + GLSL_VEC4, + GLSL_MAT16 +}; + +typedef enum +{ + UNIFORM_DIFFUSEMAP = 0, + UNIFORM_LIGHTMAP, + UNIFORM_NORMALMAP, + UNIFORM_DELUXEMAP, + UNIFORM_SPECULARMAP, + + UNIFORM_TEXTUREMAP, + UNIFORM_LEVELSMAP, + UNIFORM_CUBEMAP, + + UNIFORM_SCREENIMAGEMAP, + UNIFORM_SCREENDEPTHMAP, + + UNIFORM_SHADOWMAP, + UNIFORM_SHADOWMAP2, + UNIFORM_SHADOWMAP3, + UNIFORM_SHADOWMAP4, + + UNIFORM_SHADOWMVP, + UNIFORM_SHADOWMVP2, + UNIFORM_SHADOWMVP3, + UNIFORM_SHADOWMVP4, + + UNIFORM_ENABLETEXTURES, + + UNIFORM_DIFFUSETEXMATRIX, + UNIFORM_DIFFUSETEXOFFTURB, + + UNIFORM_TCGEN0, + UNIFORM_TCGEN0VECTOR0, + UNIFORM_TCGEN0VECTOR1, + + UNIFORM_DEFORMGEN, + UNIFORM_DEFORMPARAMS, + + UNIFORM_COLORGEN, + UNIFORM_ALPHAGEN, + UNIFORM_COLOR, + UNIFORM_BASECOLOR, + UNIFORM_VERTCOLOR, + + UNIFORM_DLIGHTINFO, + UNIFORM_LIGHTFORWARD, + UNIFORM_LIGHTUP, + UNIFORM_LIGHTRIGHT, + UNIFORM_LIGHTORIGIN, + UNIFORM_MODELLIGHTDIR, + UNIFORM_LIGHTRADIUS, + UNIFORM_AMBIENTLIGHT, + UNIFORM_DIRECTEDLIGHT, + + UNIFORM_PORTALRANGE, + + UNIFORM_FOGDISTANCE, + UNIFORM_FOGDEPTH, + UNIFORM_FOGEYET, + UNIFORM_FOGCOLORMASK, + + UNIFORM_MODELMATRIX, + UNIFORM_MODELVIEWPROJECTIONMATRIX, + + UNIFORM_TIME, + UNIFORM_VERTEXLERP, + UNIFORM_NORMALSCALE, + UNIFORM_SPECULARSCALE, + + UNIFORM_VIEWINFO, // znear, zfar, width/2, height/2 + UNIFORM_VIEWORIGIN, + UNIFORM_LOCALVIEWORIGIN, + UNIFORM_VIEWFORWARD, + UNIFORM_VIEWLEFT, + UNIFORM_VIEWUP, + + UNIFORM_INVTEXRES, + UNIFORM_AUTOEXPOSUREMINMAX, + UNIFORM_TONEMINAVGMAXLINEAR, + + UNIFORM_PRIMARYLIGHTORIGIN, + UNIFORM_PRIMARYLIGHTCOLOR, + UNIFORM_PRIMARYLIGHTAMBIENT, + UNIFORM_PRIMARYLIGHTRADIUS, + + UNIFORM_CUBEMAPINFO, + + UNIFORM_ALPHATEST, + + UNIFORM_COUNT +} uniform_t; + +// shaderProgram_t represents a pair of one +// GLSL vertex and one GLSL fragment shader +typedef struct shaderProgram_s +{ + char name[MAX_QPATH]; + + GLuint program; + GLuint vertexShader; + GLuint fragmentShader; + uint32_t attribs; // vertex array attributes + + // uniform parameters + GLint uniforms[UNIFORM_COUNT]; + short uniformBufferOffsets[UNIFORM_COUNT]; // max 32767/64=511 uniforms + char *uniformBuffer; +} shaderProgram_t; + +// trRefdef_t holds everything that comes in refdef_t, +// as well as the locally generated scene information +typedef struct { + int x, y, width, height; + float fov_x, fov_y; + vec3_t vieworg; + vec3_t viewaxis[3]; // transformation matrix + + stereoFrame_t stereoFrame; + + int time; // time in milliseconds for shader effects and other time dependent rendering issues + int rdflags; // RDF_NOWORLDMODEL, etc + + // 1 bits will prevent the associated area from rendering at all + byte areamask[MAX_MAP_AREA_BYTES]; + bool areamaskModified; // true if areamask changed since last scene + + double floatTime; // tr.refdef.time / 1000.0 + + float blurFactor; + + // text messages for deform text shaders + char text[MAX_RENDER_STRINGS][MAX_RENDER_STRING_LENGTH]; + + int num_entities; + trRefEntity_t *entities; + + int num_dlights; + struct dlight_s *dlights; + + int numPolys; + struct srfPoly_s *polys; + + int numDrawSurfs; + struct drawSurf_s *drawSurfs; + + unsigned int dlightMask; + int num_pshadows; + struct pshadow_s *pshadows; + + float sunShadowMvp[4][16]; + float sunDir[4]; + float sunCol[4]; + float sunAmbCol[4]; + + float autoExposureMinMax[2]; + float toneMinAvgMaxLinear[3]; +} trRefdef_t; + + +//================================================================================= + +// max surfaces per-skin +// This is an arbitry limit. Vanilla Q3 only supported 32 surfaces in skins but failed to +// enforce the maximum limit when reading skin files. It was possile to use more than 32 +// surfaces which accessed out of bounds memory past end of skin->surfaces hunk block. +#define MAX_SKIN_SURFACES 256 + +// skins allow models to be retextured without modifying the model file +typedef struct { + char name[MAX_QPATH]; + shader_t *shader; +} skinSurface_t; + +typedef struct skin_s { + char name[MAX_QPATH]; // game path, including extension + int numSurfaces; + skinSurface_t *surfaces; // dynamically allocated array of surfaces +} skin_t; + + +typedef struct { + int originalBrushNumber; + vec3_t bounds[2]; + + unsigned colorInt; // in packed byte format + float tcScale; // texture coordinate vector scales + fogParms_t parms; + + // for clipping distance in fog when outside + bool hasSurface; + float surface[4]; +} fog_t; + +typedef enum { + VPF_NONE = 0x00, + VPF_NOVIEWMODEL = 0x01, + VPF_SHADOWMAP = 0x02, + VPF_DEPTHSHADOW = 0x04, + VPF_DEPTHCLAMP = 0x08, + VPF_ORTHOGRAPHIC = 0x10, + VPF_USESUNLIGHT = 0x20, + VPF_FARPLANEFRUSTUM = 0x40, + VPF_NOCUBEMAPS = 0x80 +} viewParmFlags_t; + +typedef struct { + orientationr_t orientation; + orientationr_t world; + vec3_t pvsOrigin; // may be different than or.origin for portals + bool isPortal; // true if this view is through a portal + bool isMirror; // the portal is a mirror, invert the face culling + int/*viewParmFlags_t*/ flags; + int frameSceneNum; // copied from tr.frameSceneNum + int frameCount; // copied from tr.frameCount + cplane_t portalPlane; // clip anything behind this if mirroring + int viewportX, viewportY, viewportWidth, viewportHeight; + FBO_t *targetFbo; + int targetFboLayer; + int targetFboCubemapIndex; + float fovX, fovY; + float projectionMatrix[16]; + cplane_t frustum[5]; + vec3_t visBounds[2]; + float zFar; + float zNear; + stereoFrame_t stereoFrame; +} viewParms_t; + + +/* +============================================================================== + +SURFACES + +============================================================================== +*/ +typedef byte color4ub_t[4]; + +// any changes in surfaceType must be mirrored in rb_surfaceTable[] +typedef enum { + SF_BAD, + SF_SKIP, // ignore + SF_FACE, + SF_GRID, + SF_TRIANGLES, + SF_POLY, + SF_MDV, + SF_MDR, + SF_IQM, + SF_FLARE, + SF_ENTITY, // beams, rails, lightning, etc that can be determined by entity + SF_VAO_MDVMESH, + + SF_NUM_SURFACE_TYPES, + SF_MAX = 0x7fffffff // ensures that sizeof( surfaceType_t ) == sizeof( int ) +} surfaceType_t; + +typedef struct drawSurf_s { + unsigned int sort; // bit combination for fast compares + int cubemapIndex; + surfaceType_t *surface; // any of surface*_t +} drawSurf_t; + +#define MAX_FACE_POINTS 64 + +#define MAX_PATCH_SIZE 32 // max dimensions of a patch mesh in map file +#define MAX_GRID_SIZE 65 // max dimensions of a grid mesh in memory + +// when cgame directly specifies a polygon, it becomes a srfPoly_t +// as soon as it is called +typedef struct srfPoly_s { + surfaceType_t surfaceType; + qhandle_t hShader; + int fogIndex; + int numVerts; + polyVert_t *verts; +} srfPoly_t; + + +typedef struct srfFlare_s { + surfaceType_t surfaceType; + vec3_t origin; + vec3_t normal; + vec3_t color; +} srfFlare_t; + +typedef struct +{ + vec3_t xyz; + vec2_t st; + vec2_t lightmap; + int16_t normal[4]; + int16_t tangent[4]; + int16_t lightdir[4]; + uint16_t color[4]; + +#if DEBUG_OPTIMIZEVERTICES + unsigned int id; +#endif +} srfVert_t; + +#define srfVert_t_cleared(x) srfVert_t (x) = {{0, 0, 0}, {0, 0}, {0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}} + +// srfBspSurface_t covers SF_GRID, SF_TRIANGLES and SF_POLY +typedef struct srfBspSurface_s +{ + surfaceType_t surfaceType; + + // dynamic lighting information + int dlightBits; + int pshadowBits; + + // culling information + vec3_t cullBounds[2]; + vec3_t cullOrigin; + float cullRadius; + cplane_t cullPlane; + + // indexes + int numIndexes; + glIndex_t *indexes; + + // vertexes + int numVerts; + srfVert_t *verts; + + // SF_GRID specific variables after here + + // lod information, which may be different + // than the culling information to allow for + // groups of curves that LOD as a unit + vec3_t lodOrigin; + float lodRadius; + int lodFixed; + int lodStitched; + + // vertexes + int width, height; + float *widthLodError; + float *heightLodError; +} srfBspSurface_t; + +// inter-quake-model +typedef struct { + int num_vertexes; + int num_triangles; + int num_frames; + int num_surfaces; + int num_joints; + int num_poses; + struct srfIQModel_s *surfaces; + + float *positions; + float *texcoords; + float *normals; + float *tangents; + byte *blendIndexes; + union { + float *f; + byte *b; + } blendWeights; + byte *colors; + int *triangles; + + // depending upon the exporter, blend indices and weights might be int/float + // as opposed to the recommended byte/byte, for example Noesis exports + // int/float whereas the official IQM tool exports byte/byte + byte blendWeightsType; // IQM_UBYTE or IQM_FLOAT + + int *jointParents; + float *jointMats; + float *poseMats; + float *bounds; + char *names; +} iqmData_t; + +// inter-quake-model surface +typedef struct srfIQModel_s { + surfaceType_t surfaceType; + char name[MAX_QPATH]; + shader_t *shader; + iqmData_t *data; + int first_vertex, num_vertexes; + int first_triangle, num_triangles; +} srfIQModel_t; + +typedef struct srfVaoMdvMesh_s +{ + surfaceType_t surfaceType; + + struct mdvModel_s *mdvModel; + struct mdvSurface_s *mdvSurface; + + // backEnd stats + int numIndexes; + int numVerts; + glIndex_t minIndex; + glIndex_t maxIndex; + + // static render data + vao_t *vao; +} srfVaoMdvMesh_t; + +extern void (*rb_surfaceTable[SF_NUM_SURFACE_TYPES])(void *); + +/* +============================================================================== + +SHADOWS + +============================================================================== +*/ + +typedef struct pshadow_s +{ + float sort; + + int numEntities; + int entityNums[8]; + vec3_t entityOrigins[8]; + float entityRadiuses[8]; + + float viewRadius; + vec3_t viewOrigin; + + vec3_t lightViewAxis[3]; + vec3_t lightOrigin; + float lightRadius; + cplane_t cullPlane; +} pshadow_t; + + +/* +============================================================================== + +BRUSH MODELS + +============================================================================== +*/ + + +// +// in memory representation +// + +#define SIDE_FRONT 0 +#define SIDE_BACK 1 +#define SIDE_ON 2 + +#define CULLINFO_NONE 0 +#define CULLINFO_BOX 1 +#define CULLINFO_SPHERE 2 +#define CULLINFO_PLANE 4 + +typedef struct cullinfo_s { + int type; + vec3_t bounds[2]; + vec3_t localOrigin; + float radius; + cplane_t plane; +} cullinfo_t; + +typedef struct msurface_s { + //int viewCount; // if == tr.viewCount, already added + struct shader_s *shader; + int fogIndex; + int cubemapIndex; + cullinfo_t cullinfo; + + surfaceType_t *data; // any of srf*_t +} msurface_t; + + +#define CONTENTS_NODE -1 +typedef struct mnode_s { + // common with leaf and node + int contents; // -1 for nodes, to differentiate from leafs + int visCounts[MAX_VISCOUNTS]; // node needs to be traversed if current + vec3_t mins, maxs; // for bounding box culling + struct mnode_s *parent; + + // node specific + cplane_t *plane; + struct mnode_s *children[2]; + + // leaf specific + int cluster; + int area; + + int firstmarksurface; + int nummarksurfaces; +} mnode_t; + +typedef struct { + vec3_t bounds[2]; // for culling + int firstSurface; + int numSurfaces; +} bmodel_t; + +typedef struct { + char name[MAX_QPATH]; // ie: maps/tim_dm2.bsp + char baseName[MAX_QPATH]; // ie: tim_dm2 + + int dataSize; + + int numShaders; + dshader_t *shaders; + + int numBModels; + bmodel_t *bmodels; + + int numplanes; + cplane_t *planes; + + int numnodes; // includes leafs + int numDecisionNodes; + mnode_t *nodes; + + int numWorldSurfaces; + + int numsurfaces; + msurface_t *surfaces; + int *surfacesViewCount; + int *surfacesDlightBits; + int *surfacesPshadowBits; + + int nummarksurfaces; + int *marksurfaces; + + int numfogs; + fog_t *fogs; + + vec3_t lightGridOrigin; + vec3_t lightGridSize; + vec3_t lightGridInverseSize; + int lightGridBounds[3]; + byte *lightGridData; + uint16_t *lightGrid16; + + + int numClusters; + int clusterBytes; + const byte *vis; // may be passed in by CM_LoadMap to save space + + char *entityString; + char *entityParsePoint; +} world_t; + + +/* +============================================================================== +MDV MODELS - meta format for vertex animation models like .md2, .md3, .mdc +============================================================================== +*/ +typedef struct +{ + float bounds[2][3]; + float localOrigin[3]; + float radius; +} mdvFrame_t; + +typedef struct +{ + float origin[3]; + float axis[3][3]; +} mdvTag_t; + +typedef struct +{ + char name[MAX_QPATH]; // tag name +} mdvTagName_t; + +typedef struct +{ + vec3_t xyz; + int16_t normal[4]; + int16_t tangent[4]; +} mdvVertex_t; + +typedef struct +{ + float st[2]; +} mdvSt_t; + +typedef struct mdvSurface_s +{ + surfaceType_t surfaceType; + + char name[MAX_QPATH]; // polyset name + + int numShaderIndexes; + int *shaderIndexes; + + int numVerts; + mdvVertex_t *verts; + mdvSt_t *st; + + int numIndexes; + glIndex_t *indexes; + + struct mdvModel_s *model; +} mdvSurface_t; + +typedef struct mdvModel_s +{ + int numFrames; + mdvFrame_t *frames; + + int numTags; + mdvTag_t *tags; + mdvTagName_t *tagNames; + + int numSurfaces; + mdvSurface_t *surfaces; + + int numVaoSurfaces; + srfVaoMdvMesh_t *vaoSurfaces; + + int numSkins; +} mdvModel_t; + + +//====================================================================== + +typedef enum { + MOD_BAD, + MOD_BRUSH, + MOD_MESH, + MOD_MDR, + MOD_IQM +} modtype_t; + +typedef struct model_s { + char name[MAX_QPATH]; + modtype_t type; + int index; // model = tr.models[model->index] + + int dataSize; // just for listing purposes + bmodel_t *bmodel; // only if type == MOD_BRUSH + mdvModel_t *mdv[MD3_MAX_LODS]; // only if type == MOD_MESH + void *modelData; // only if type == (MOD_MDR | MOD_IQM) + + int numLods; +} model_t; + + +#define MAX_MOD_KNOWN 1024 + +void R_ModelInit (void); +model_t *R_GetModelByHandle( qhandle_t hModel ); +int R_LerpTag( orientation_t *tag, qhandle_t handle, int startFrame, int endFrame, + float frac, const char *tagName ); +void R_ModelBounds( qhandle_t handle, vec3_t mins, vec3_t maxs ); + +void R_Modellist_f (void); + +//==================================================== + +#define MAX_DRAWIMAGES 2048 +#define MAX_SKINS 1024 + + +#define MAX_DRAWSURFS 0x10000 +#define DRAWSURF_MASK (MAX_DRAWSURFS-1) + +/* + +the drawsurf sort data is packed into a single 32 bit value so it can be +compared quickly during the qsorting process + +the bits are allocated as follows: + +0 - 1 : dlightmap index +//2 : used to be clipped flag REMOVED - 03.21.00 rad +2 - 6 : fog index +11 - 20 : entity index +21 - 31 : sorted shader index + + TTimo - 1.32 +0-1 : dlightmap index +2-6 : fog index +7-16 : entity index +17-30 : sorted shader index + + SmileTheory - for pshadows +17-31 : sorted shader index +7-16 : entity index +2-6 : fog index +1 : pshadow flag +0 : dlight flag +*/ +#define QSORT_FOGNUM_SHIFT 2 +#define QSORT_REFENTITYNUM_SHIFT 7 +#define QSORT_SHADERNUM_SHIFT (QSORT_REFENTITYNUM_SHIFT+REFENTITYNUM_BITS) +#if (QSORT_SHADERNUM_SHIFT+SHADERNUM_BITS) > 32 + #error "Need to update sorting, too many bits." +#endif +#define QSORT_PSHADOW_SHIFT 1 + +extern int gl_filter_min, gl_filter_max; + +/* +** performanceCounters_t +*/ +typedef struct { + int c_sphere_cull_patch_in, c_sphere_cull_patch_clip, c_sphere_cull_patch_out; + int c_box_cull_patch_in, c_box_cull_patch_clip, c_box_cull_patch_out; + int c_sphere_cull_md3_in, c_sphere_cull_md3_clip, c_sphere_cull_md3_out; + int c_box_cull_md3_in, c_box_cull_md3_clip, c_box_cull_md3_out; + + int c_leafs; + int c_dlightSurfaces; + int c_dlightSurfacesCulled; +} frontEndCounters_t; + +#define FOG_TABLE_SIZE 256 +#define FUNCTABLE_SIZE 1024 +#define FUNCTABLE_SIZE2 10 +#define FUNCTABLE_MASK (FUNCTABLE_SIZE-1) + + +// the renderer front end should never modify glstate_t +typedef struct { + bool finishCalled; + int texEnv[2]; + int faceCulling; + int faceCullFront; + uint32_t glStateBits; + uint32_t storedGlState; + float vertexAttribsInterpolation; + bool vertexAnimation; + uint32_t vertexAttribsEnabled; // global if no VAOs, tess only otherwise + FBO_t *currentFBO; + vao_t *currentVao; + mat4_t modelview; + mat4_t projection; + mat4_t modelviewProjection; +} glstate_t; + +typedef enum { + MI_NONE, + MI_NVX, + MI_ATI +} memInfo_t; + +typedef enum { + TCR_NONE = 0x0000, + TCR_RGTC = 0x0001, + TCR_BPTC = 0x0002, +} textureCompressionRef_t; + +// We can't change glConfig_t without breaking DLL/vms compatibility, so +// store extensions we have here. +typedef struct { + int openglMajorVersion; + int openglMinorVersion; + + bool intelGraphics; + + bool occlusionQuery; + + int glslMajorVersion; + int glslMinorVersion; + + memInfo_t memInfo; + + bool framebufferObject; + int maxRenderbufferSize; + int maxColorAttachments; + + bool textureFloat; + int /*textureCompressionRef_t*/ textureCompression; + bool swizzleNormalmap; + + bool framebufferMultisample; + bool framebufferBlit; + + bool depthClamp; + bool seamlessCubeMap; + + bool vertexArrayObject; + bool directStateAccess; +} glRefConfig_t; + + +typedef struct { + int c_surfaces, c_shaders, c_vertexes, c_indexes, c_totalIndexes; + int c_surfBatches; + float c_overDraw; + + int c_vaoBinds; + int c_vaoVertexes; + int c_vaoIndexes; + + int c_staticVaoDraws; + int c_dynamicVaoDraws; + + int c_dlightVertexes; + int c_dlightIndexes; + + int c_flareAdds; + int c_flareTests; + int c_flareRenders; + + int c_glslShaderBinds; + int c_genericDraws; + int c_lightallDraws; + int c_fogDraws; + int c_dlightDraws; + + int msec; // total msec for backend run +} backEndCounters_t; + +// all state modified by the back end is seperated +// from the front end state +typedef struct { + trRefdef_t refdef; + viewParms_t viewParms; + orientationr_t orientation; + backEndCounters_t pc; + bool isHyperspace; + trRefEntity_t *currentEntity; + bool skyRenderedThisView; // flag for drawing sun + + bool projection2D; // if true, drawstretchpic doesn't need to change modes + byte color2D[4]; + bool vertexes2D; // shader needs to be finished + trRefEntity_t entity2D; // currentEntity will point at this when doing 2D rendering + + FBO_t *last2DFBO; + bool colorMask[4]; + bool framePostProcessed; + bool depthFill; +} backEndState_t; + +/* +** trGlobals_t +** +** Most renderer globals are defined here. +** backend functions should never modify any of these fields, +** but may read fields that aren't dynamically modified +** by the frontend. +*/ +typedef struct { + bool registered; // cleared at shutdown, set at beginRegistration + + int visIndex; + int visClusters[MAX_VISCOUNTS]; + int visCounts[MAX_VISCOUNTS]; // incremented every time a new vis cluster is entered + + int frameCount; // incremented every frame + int sceneCount; // incremented every scene + int viewCount; // incremented every view (twice a scene if portaled) + // and every R_MarkFragments call + + int frameSceneNum; // zeroed at RE_BeginFrame + + bool worldMapLoaded; + bool worldDeluxeMapping; + vec2_t autoExposureMinMax; + vec3_t toneMinAvgMaxLevel; + world_t *world; + + const byte *externalVisData; // from RE_SetWorldVisData, shared with CM_Load + + image_t *defaultImage; + image_t *scratchImage[32]; + image_t *fogImage; + image_t *dlightImage; // inverse-quare highlight for projective adding + image_t *flareImage; + image_t *whiteImage; // full of 0xff + image_t *identityLightImage; // full of tr.identityLightByte + + image_t *shadowCubemaps[MAX_DLIGHTS]; + + + image_t *renderImage; + image_t *sunRaysImage; + image_t *renderDepthImage; + image_t *pshadowMaps[MAX_DRAWN_PSHADOWS]; + image_t *screenScratchImage; + image_t *textureScratchImage[2]; + image_t *quarterImage[2]; + image_t *calcLevelsImage; + image_t *targetLevelsImage; + image_t *fixedLevelsImage; + image_t *sunShadowDepthImage[4]; + image_t *screenShadowImage; + image_t *screenSsaoImage; + image_t *hdrDepthImage; + image_t *renderCubeImage; + + image_t *textureDepthImage; + + FBO_t *renderFbo; + FBO_t *msaaResolveFbo; + FBO_t *sunRaysFbo; + FBO_t *depthFbo; + FBO_t *pshadowFbos[MAX_DRAWN_PSHADOWS]; + FBO_t *screenScratchFbo; + FBO_t *textureScratchFbo[2]; + FBO_t *quarterFbo[2]; + FBO_t *calcLevelsFbo; + FBO_t *targetLevelsFbo; + FBO_t *sunShadowFbo[4]; + FBO_t *screenShadowFbo; + FBO_t *screenSsaoFbo; + FBO_t *hdrDepthFbo; + FBO_t *renderCubeFbo; + + shader_t *defaultShader; + shader_t *shadowShader; + shader_t *projectionShadowShader; + + shader_t *flareShader; + shader_t *sunShader; + shader_t *sunFlareShader; + + int numLightmaps; + int lightmapSize; + image_t **lightmaps; + image_t **deluxemaps; + + int fatLightmapCols; + int fatLightmapRows; + + int numCubemaps; + cubemap_t *cubemaps; + + trRefEntity_t *currentEntity; + trRefEntity_t worldEntity; // point currentEntity at this when rendering world + int currentEntityNum; + int shiftedEntityNum; // currentEntityNum << QSORT_REFENTITYNUM_SHIFT + model_t *currentModel; + + // + // GPU shader programs + // + shaderProgram_t genericShader[GENERICDEF_COUNT]; + shaderProgram_t textureColorShader; + shaderProgram_t fogShader[FOGDEF_COUNT]; + shaderProgram_t dlightShader[DLIGHTDEF_COUNT]; + shaderProgram_t lightallShader[LIGHTDEF_COUNT]; + shaderProgram_t shadowmapShader; + shaderProgram_t pshadowShader; + shaderProgram_t down4xShader; + shaderProgram_t bokehShader; + shaderProgram_t tonemapShader; + shaderProgram_t calclevels4xShader[2]; + shaderProgram_t shadowmaskShader; + shaderProgram_t ssaoShader; + shaderProgram_t depthBlurShader[4]; + shaderProgram_t testcubeShader; + + + // ----------------------------------------- + + viewParms_t viewParms; + + float identityLight; // 1.0 / ( 1 << overbrightBits ) + int identityLightByte; // identityLight * 255 + int overbrightBits; // r_overbrightBits->integer, but set to 0 if no hw gamma + + orientationr_t orientation; // for current entity + + trRefdef_t refdef; + + int viewCluster; + + float sunShadowScale; + + bool sunShadows; + vec3_t sunLight; // from the sky shader for this level + vec3_t sunDirection; + vec3_t lastCascadeSunDirection; + float lastCascadeSunMvp[16]; + + frontEndCounters_t pc; + int frontEndMsec; // not in pc due to clearing issue + + vec4_t clipRegion; // 2D clipping region + + // + // put large tables at the end, so most elements will be + // within the +/32K indexed range on risc processors + // + model_t *models[MAX_MOD_KNOWN]; + int numModels; + + int numImages; + image_t *images[MAX_DRAWIMAGES]; + + int numFBOs; + FBO_t *fbos[MAX_FBOS]; + + int numVaos; + vao_t *vaos[MAX_VAOS]; + + // shader indexes from other modules will be looked up in tr.shaders[] + // shader indexes from drawsurfs will be looked up in sortedShaders[] + // lower indexed sortedShaders must be rendered first (opaque surfaces before translucent) + int numShaders; + shader_t *shaders[MAX_SHADERS]; + shader_t *sortedShaders[MAX_SHADERS]; + + int numSkins; + skin_t *skins[MAX_SKINS]; + + GLuint sunFlareQuery[2]; + int sunFlareQueryIndex; + bool sunFlareQueryActive[2]; + + float sinTable[FUNCTABLE_SIZE]; + float squareTable[FUNCTABLE_SIZE]; + float triangleTable[FUNCTABLE_SIZE]; + float sawToothTable[FUNCTABLE_SIZE]; + float inverseSawToothTable[FUNCTABLE_SIZE]; + float fogTable[FOG_TABLE_SIZE]; +} trGlobals_t; + +extern backEndState_t backEnd; +extern trGlobals_t tr; +extern glstate_t glState; // outside of TR since it shouldn't be cleared during ref re-init +extern glRefConfig_t glRefConfig; + +// +// cvars +// +extern cvar_t *r_flareSize; +extern cvar_t *r_flareFade; +// coefficient for the flare intensity falloff function. +#define FLARE_STDCOEFF "150" +extern cvar_t *r_flareCoeff; + +extern cvar_t *r_railWidth; +extern cvar_t *r_railCoreWidth; +extern cvar_t *r_railSegmentLength; + +extern cvar_t *r_ignore; // used for debugging anything +extern cvar_t *r_verbose; // used for verbose debug spew + +extern cvar_t *r_znear; // near Z clip plane +extern cvar_t *r_zproj; // z distance of projection plane +extern cvar_t *r_stereoSeparation; // separation of cameras for stereo rendering + +extern cvar_t *r_measureOverdraw; // enables stencil buffer overdraw measurement + +extern cvar_t *r_lodbias; // push/pull LOD transitions +extern cvar_t *r_lodscale; + +extern cvar_t *r_inGameVideo; // controls whether in game video should be draw +extern cvar_t *r_fastsky; // controls whether sky should be cleared or drawn +extern cvar_t *r_drawSun; // controls drawing of sun quad +extern cvar_t *r_dynamiclight; // dynamic lights enabled/disabled +extern cvar_t *r_dlightBacks; // dlight non-facing surfaces for continuity + +extern cvar_t *r_norefresh; // bypasses the ref rendering +extern cvar_t *r_drawentities; // disable/enable entity rendering +extern cvar_t *r_drawworld; // disable/enable world rendering +extern cvar_t *r_speeds; // various levels of information display +extern cvar_t *r_detailTextures; // enables/disables detail texturing stages +extern cvar_t *r_novis; // disable/enable usage of PVS +extern cvar_t *r_nocull; +extern cvar_t *r_facePlaneCull; // enables culling of planar surfaces with back side test +extern cvar_t *r_nocurves; +extern cvar_t *r_showcluster; + +extern cvar_t *r_gamma; + +extern cvar_t *r_ext_framebuffer_object; +extern cvar_t *r_ext_texture_float; +extern cvar_t *r_ext_framebuffer_multisample; +extern cvar_t *r_arb_seamless_cube_map; +extern cvar_t *r_arb_vertex_array_object; +extern cvar_t *r_ext_direct_state_access; + +extern cvar_t *r_nobind; // turns off binding to appropriate textures +extern cvar_t *r_singleShader; // make most world faces use default shader +extern cvar_t *r_roundImagesDown; +extern cvar_t *r_colorMipLevels; // development aid to see texture mip usage +extern cvar_t *r_picmip; // controls picmip values +extern cvar_t *r_finish; +extern cvar_t *r_textureMode; +extern cvar_t *r_offsetFactor; +extern cvar_t *r_offsetUnits; + +extern cvar_t *r_fullbright; // avoid lightmap pass +extern cvar_t *r_lightmap; // render lightmaps only +extern cvar_t *r_vertexLight; // vertex lighting mode for better performance +extern cvar_t *r_uiFullScreen; // ui is running fullscreen + +extern cvar_t *r_logFile; // number of frames to emit GL logs +extern cvar_t *r_showtris; // enables wireframe rendering of the world +extern cvar_t *r_showsky; // forces sky in front of all surfaces +extern cvar_t *r_shownormals; // draws wireframe normals +extern cvar_t *r_clear; // force screen clear every frame + +extern cvar_t *r_shadows; // controls shadows: 0 = none, 1 = blur, 2 = stencil, 3 = black planar projection +extern cvar_t *r_flares; // light flares + +extern cvar_t *r_intensity; + +extern cvar_t *r_lockpvs; +extern cvar_t *r_noportals; +extern cvar_t *r_portalOnly; + +extern cvar_t *r_subdivisions; +extern cvar_t *r_lodCurveError; +extern cvar_t *r_skipBackEnd; + +extern cvar_t *r_anaglyphMode; + +extern cvar_t *r_externalGLSL; + +extern cvar_t *r_hdr; +extern cvar_t *r_floatLightmap; +extern cvar_t *r_postProcess; + +extern cvar_t *r_toneMap; +extern cvar_t *r_forceToneMap; +extern cvar_t *r_forceToneMapMin; +extern cvar_t *r_forceToneMapAvg; +extern cvar_t *r_forceToneMapMax; + +extern cvar_t *r_autoExposure; +extern cvar_t *r_forceAutoExposure; +extern cvar_t *r_forceAutoExposureMin; +extern cvar_t *r_forceAutoExposureMax; + +extern cvar_t *r_cameraExposure; + +extern cvar_t *r_depthPrepass; +extern cvar_t *r_ssao; + +extern cvar_t *r_normalMapping; +extern cvar_t *r_specularMapping; +extern cvar_t *r_deluxeMapping; +extern cvar_t *r_parallaxMapping; +extern cvar_t *r_cubeMapping; +extern cvar_t *r_cubemapSize; +extern cvar_t *r_pbr; +extern cvar_t *r_baseNormalX; +extern cvar_t *r_baseNormalY; +extern cvar_t *r_baseParallax; +extern cvar_t *r_baseSpecular; +extern cvar_t *r_baseGloss; +extern cvar_t *r_glossType; +extern cvar_t *r_dlightMode; +extern cvar_t *r_pshadowDist; +extern cvar_t *r_mergeLightmaps; +extern cvar_t *r_imageUpsample; +extern cvar_t *r_imageUpsampleMaxSize; +extern cvar_t *r_imageUpsampleType; +extern cvar_t *r_genNormalMaps; +extern cvar_t *r_forceSun; +extern cvar_t *r_forceSunLightScale; +extern cvar_t *r_forceSunAmbientScale; +extern cvar_t *r_sunlightMode; +extern cvar_t *r_drawSunRays; +extern cvar_t *r_sunShadows; +extern cvar_t *r_shadowFilter; +extern cvar_t *r_shadowBlur; +extern cvar_t *r_shadowMapSize; +extern cvar_t *r_shadowCascadeZNear; +extern cvar_t *r_shadowCascadeZFar; +extern cvar_t *r_shadowCascadeZBias; +extern cvar_t *r_ignoreDstAlpha; + +extern cvar_t *r_greyscale; + +extern cvar_t *r_ignoreGLErrors; + +extern cvar_t *r_overBrightBits; +extern cvar_t *r_mapOverBrightBits; + +extern cvar_t *r_mapLightmapMin; + +extern cvar_t *r_debugSurface; +extern cvar_t *r_simpleMipMaps; + +extern cvar_t *r_showImages; +extern cvar_t *r_debugSort; + +extern cvar_t *r_printShaders; + +extern cvar_t *r_marksOnTriangleMeshes; + +//==================================================================== + +void R_SwapBuffers( int ); + +void R_RenderView( viewParms_t *parms ); +void R_RenderDlightCubemaps(const refdef_t *fd); +void R_RenderPshadowMaps(const refdef_t *fd); +void R_RenderSunShadowMaps(const refdef_t *fd, int level); +void R_RenderCubemapSide( int cubemapIndex, int cubemapSide, bool subscene ); + +void R_AddMD3Surfaces( trRefEntity_t *e ); +void R_AddNullModelSurfaces( trRefEntity_t *e ); +void R_AddBeamSurfaces( trRefEntity_t *e ); +void R_AddRailSurfaces( trRefEntity_t *e, bool isUnderwater ); +void R_AddLightningBoltSurfaces( trRefEntity_t *e ); + +void R_AddPolygonSurfaces( void ); + +void R_DecomposeSort( unsigned sort, int *entityNum, shader_t **shader, + int *fogNum, int *dlightMap, int *pshadowMap ); + +void R_AddDrawSurf( surfaceType_t *surface, shader_t *shader, + int fogIndex, int dlightMap, int pshadowMap, int cubemap ); + +void R_CalcTexDirs(vec3_t sdir, vec3_t tdir, const vec3_t v1, const vec3_t v2, + const vec3_t v3, const vec2_t w1, const vec2_t w2, const vec2_t w3); +vec_t R_CalcTangentSpace(vec3_t tangent, vec3_t bitangent, const vec3_t normal, const vec3_t sdir, const vec3_t tdir); +bool R_CalcTangentVectors(srfVert_t * dv[3]); + +#define CULL_IN 0 // completely unclipped +#define CULL_CLIP 1 // clipped by one or more planes +#define CULL_OUT 2 // completely outside the clipping planes +void R_LocalNormalToWorld (const vec3_t local, vec3_t world); +void R_LocalPointToWorld (const vec3_t local, vec3_t world); +int R_CullBox (vec3_t bounds[2]); +int R_CullLocalBox (vec3_t bounds[2]); +int R_CullPointAndRadiusEx( const vec3_t origin, float radius, const cplane_t* frustum, int numPlanes ); +int R_CullPointAndRadius( const vec3_t origin, float radius ); +int R_CullLocalPointAndRadius( const vec3_t origin, float radius ); + +void R_SetupProjection(viewParms_t *dest, float zProj, float zFar, bool computeFrustum); +void R_RotateForEntity( const trRefEntity_t *ent, const viewParms_t *viewParms, orientationr_t *orientation ); + +/* +** GL wrapper/helper functions +*/ +void GL_BindToTMU( image_t *image, int tmu ); +void GL_SetDefaultState (void); +void GL_TextureMode( const char *string ); +void GL_CheckErrs( const char *file, int line ); +#define GL_CheckErrors(...) GL_CheckErrs(__FILE__, __LINE__) +void GL_State( unsigned long stateVector ); +void GL_SetProjectionMatrix(mat4_t matrix); +void GL_SetModelviewMatrix(mat4_t matrix); +void GL_Cull( int cullType ); + +#define GLS_SRCBLEND_ZERO 0x00000001 +#define GLS_SRCBLEND_ONE 0x00000002 +#define GLS_SRCBLEND_DST_COLOR 0x00000003 +#define GLS_SRCBLEND_ONE_MINUS_DST_COLOR 0x00000004 +#define GLS_SRCBLEND_SRC_ALPHA 0x00000005 +#define GLS_SRCBLEND_ONE_MINUS_SRC_ALPHA 0x00000006 +#define GLS_SRCBLEND_DST_ALPHA 0x00000007 +#define GLS_SRCBLEND_ONE_MINUS_DST_ALPHA 0x00000008 +#define GLS_SRCBLEND_ALPHA_SATURATE 0x00000009 +#define GLS_SRCBLEND_BITS 0x0000000f + +#define GLS_DSTBLEND_ZERO 0x00000010 +#define GLS_DSTBLEND_ONE 0x00000020 +#define GLS_DSTBLEND_SRC_COLOR 0x00000030 +#define GLS_DSTBLEND_ONE_MINUS_SRC_COLOR 0x00000040 +#define GLS_DSTBLEND_SRC_ALPHA 0x00000050 +#define GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA 0x00000060 +#define GLS_DSTBLEND_DST_ALPHA 0x00000070 +#define GLS_DSTBLEND_ONE_MINUS_DST_ALPHA 0x00000080 +#define GLS_DSTBLEND_BITS 0x000000f0 + +#define GLS_DEPTHMASK_TRUE 0x00000100 + +#define GLS_POLYMODE_LINE 0x00001000 + +#define GLS_DEPTHTEST_DISABLE 0x00010000 +#define GLS_DEPTHFUNC_EQUAL 0x00020000 +#define GLS_DEPTHFUNC_GREATER 0x00040000 +#define GLS_DEPTHFUNC_BITS 0x00060000 + +#define GLS_ATEST_GT_0 0x10000000 +#define GLS_ATEST_LT_80 0x20000000 +#define GLS_ATEST_GE_80 0x40000000 +#define GLS_ATEST_BITS 0x70000000 + +#define GLS_DEFAULT GLS_DEPTHMASK_TRUE + +void RE_StretchRaw (int x, int y, int w, int h, int cols, int rows, const byte *data, int client, bool dirty); +void RE_UploadCinematic (int w, int h, int cols, int rows, const byte *data, int client, bool dirty); + +void RE_BeginFrame( stereoFrame_t stereoFrame ); +void RE_BeginRegistration( glconfig_t *glconfig ); +void RE_LoadWorldMap( const char *mapname ); +void RE_SetWorldVisData( const byte *vis ); +qhandle_t RE_RegisterModel( const char *name ); +qhandle_t RE_RegisterSkin( const char *name ); +void RE_Shutdown( bool destroyWindow ); + +bool R_GetEntityToken( char *buffer, int size ); + +model_t *R_AllocModel( void ); + +void R_Init( void ); +void R_UpdateSubImage( image_t *image, byte *pic, int x, int y, int width, int height, GLenum picFormat ); + +void R_SetColorMappings( void ); +void R_GammaCorrect( byte *buffer, int bufSize ); + +void R_ImageList_f( void ); +void R_SkinList_f( void ); +// https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=516 +const void *RB_TakeScreenshotCmd( const void *data ); +void R_ScreenShot_f( void ); + +void R_InitFogTable( void ); +float R_FogFactor( float s, float t ); +void R_InitImages( void ); +void R_DeleteTextures( void ); +int R_SumOfUsedImages( void ); +void R_InitSkins( void ); +skin_t *R_GetSkinByHandle( qhandle_t hSkin ); + +int R_ComputeLOD( trRefEntity_t *ent ); + +const void *RB_TakeVideoFrameCmd( const void *data ); + +// +// tr_shader.c +// +shader_t *R_FindShader( const char *name, int lightmapIndex, bool mipRawImage ); +shader_t *R_GetShaderByHandle( qhandle_t hShader ); +shader_t *R_GetShaderByState( int index, long *cycleTime ); +shader_t *R_FindShaderByName( const char *name ); +void R_InitShaders( void ); +void R_ShaderList_f( void ); +void R_RemapShader(const char *oldShader, const char *newShader, const char *timeOffset); + +/* +==================================================================== + +IMPLEMENTATION SPECIFIC FUNCTIONS + +==================================================================== +*/ + +void GLimp_InitExtraExtensions( void ); + +/* +==================================================================== + +TESSELATOR/SHADER DECLARATIONS + +==================================================================== +*/ + +typedef struct stageVars +{ + color4ub_t colors[SHADER_MAX_VERTEXES]; + vec2_t texcoords[NUM_TEXTURE_BUNDLES][SHADER_MAX_VERTEXES]; +} stageVars_t; + +typedef struct shaderCommands_s +{ + glIndex_t indexes[SHADER_MAX_INDEXES] QALIGN(16); + vec4_t xyz[SHADER_MAX_VERTEXES] QALIGN(16); + int16_t normal[SHADER_MAX_VERTEXES][4] QALIGN(16); + int16_t tangent[SHADER_MAX_VERTEXES][4] QALIGN(16); + vec2_t texCoords[SHADER_MAX_VERTEXES] QALIGN(16); + vec2_t lightCoords[SHADER_MAX_VERTEXES] QALIGN(16); + uint16_t color[SHADER_MAX_VERTEXES][4] QALIGN(16); + int16_t lightdir[SHADER_MAX_VERTEXES][4] QALIGN(16); + //int vertexDlightBits[SHADER_MAX_VERTEXES] QALIGN(16); + + void *attribPointers[ATTR_INDEX_COUNT]; + vao_t *vao; + bool useInternalVao; + bool useCacheVao; + + stageVars_t svars QALIGN(16); + + //color4ub_t constantColor255[SHADER_MAX_VERTEXES] QALIGN(16); + + shader_t *shader; + double shaderTime; + int fogNum; + int cubemapIndex; + + int dlightBits; // or together of all vertexDlightBits + int pshadowBits; + + int firstIndex; + int numIndexes; + int numVertexes; + + // info extracted from current shader + int numPasses; + void (*currentStageIteratorFunc)( void ); + shaderStage_t **xstages; +} shaderCommands_t; + +extern shaderCommands_t tess; + +void RB_BeginSurface(shader_t *shader, int fogNum, int cubemapIndex ); +void RB_EndSurface(void); +void RB_CheckOverflow( int verts, int indexes ); +#define RB_CHECKOVERFLOW(v,i) if (tess.numVertexes + (v) >= SHADER_MAX_VERTEXES || tess.numIndexes + (i) >= SHADER_MAX_INDEXES ) {RB_CheckOverflow(v,i);} + +void R_DrawElements( int numIndexes, glIndex_t firstIndex ); +void RB_StageIteratorGeneric( void ); +void RB_StageIteratorSky( void ); +void RB_StageIteratorVertexLitTexture( void ); +void RB_StageIteratorLightmappedMultitexture( void ); + +void RB_AddQuadStamp( vec3_t origin, vec3_t left, vec3_t up, float color[4] ); +void RB_AddQuadStampExt( vec3_t origin, vec3_t left, vec3_t up, float color[4], float s1, float t1, float s2, float t2 ); +void RB_InstantQuad( vec4_t quadVerts[4] ); +//void RB_InstantQuad2(vec4_t quadVerts[4], vec2_t texCoords[4], vec4_t color, shaderProgram_t *sp, vec2_t invTexRes); +void RB_InstantQuad2(vec4_t quadVerts[4], vec2_t texCoords[4]); + +void RB_ShowImages( void ); + + +/* +============================================================ + +WORLD MAP + +============================================================ +*/ + +void R_AddBrushModelSurfaces( trRefEntity_t *e ); +void R_AddWorldSurfaces( void ); +bool R_inPVS( const vec3_t p1, const vec3_t p2 ); + + +/* +============================================================ + +FLARES + +============================================================ +*/ + +void R_ClearFlares( void ); + +void RB_AddFlare( void *surface, int fogNum, vec3_t point, vec3_t color, vec3_t normal ); +void RB_AddDlightFlares( void ); +void RB_RenderFlares (void); + +/* +============================================================ + +LIGHTS + +============================================================ +*/ + +void R_DlightBmodel( bmodel_t *bmodel ); +void R_SetupEntityLighting( const trRefdef_t *refdef, trRefEntity_t *ent ); +void R_TransformDlights( int count, dlight_t *dl, orientationr_t *orientation ); +bool R_LightForPoint( vec3_t point, vec3_t ambientLight, vec3_t directedLight, vec3_t lightDir ); +bool R_LightDirForPoint( vec3_t point, vec3_t lightDir, vec3_t normal, world_t *world ); +int R_CubemapForPoint( vec3_t point ); + + +/* +============================================================ + +SHADOWS + +============================================================ +*/ + +void RB_ShadowTessEnd( void ); +void RB_ShadowFinish( void ); +void RB_ProjectionShadowDeform( void ); + +/* +============================================================ + +SKIES + +============================================================ +*/ + +void R_BuildCloudData( shaderCommands_t *shader ); +void R_InitSkyTexCoords( float cloudLayerHeight ); +void R_DrawSkyBox( shaderCommands_t *shader ); +void RB_DrawSun( float scale, shader_t *shader ); +void RB_ClipSkyPolygons( shaderCommands_t *shader ); + +/* +============================================================ + +CURVE TESSELATION + +============================================================ +*/ + +#define PATCH_STITCHING + +void R_SubdividePatchToGrid( srfBspSurface_t *grid, int width, int height, + srfVert_t points[MAX_PATCH_SIZE*MAX_PATCH_SIZE] ); +void R_GridInsertColumn( srfBspSurface_t *grid, int column, int row, vec3_t point, float loderror ); +void R_GridInsertRow( srfBspSurface_t *grid, int row, int column, vec3_t point, float loderror ); + +/* +============================================================ + +MARKERS, POLYGON PROJECTION ON WORLD POLYGONS + +============================================================ +*/ + +int R_MarkFragments( int numPoints, const vec3_t *points, const vec3_t projection, + int maxPoints, vec3_t pointBuffer, int maxFragments, markFragment_t *fragmentBuffer ); + + +/* +============================================================ + +VERTEX BUFFER OBJECTS + +============================================================ +*/ + +void R_VaoPackTangent(int16_t *out, vec4_t v); +void R_VaoPackNormal(int16_t *out, vec3_t v); +void R_VaoPackColor(uint16_t *out, vec4_t c); +void R_VaoUnpackTangent(vec4_t v, int16_t *pack); +void R_VaoUnpackNormal(vec3_t v, int16_t *pack); + +vao_t *R_CreateVao(const char *name, byte *vertexes, int vertexesSize, byte *indexes, int indexesSize, vaoUsage_t usage); +vao_t *R_CreateVao2(const char *name, int numVertexes, srfVert_t *verts, int numIndexes, glIndex_t *inIndexes); + +void R_BindVao(vao_t *vao); +void R_BindNullVao(void); + +void Vao_SetVertexPointers(vao_t *vao); + +void R_InitVaos(void); +void R_ShutdownVaos(void); +void R_VaoList_f(void); + +void RB_UpdateTessVao(unsigned int attribBits); + +void VaoCache_Commit(void); +void VaoCache_Init(void); +void VaoCache_BindVao(void); +void VaoCache_CheckAdd(bool *endSurface, bool *recycleVertexBuffer, bool *recycleIndexBuffer, int numVerts, int numIndexes); +void VaoCache_RecycleVertexBuffer(void); +void VaoCache_RecycleIndexBuffer(void); +void VaoCache_InitNewSurfaceSet(void); +void VaoCache_AddSurface(srfVert_t *verts, int numVerts, glIndex_t *indexes, int numIndexes); + +/* +============================================================ + +GLSL + +============================================================ +*/ + +void GLSL_InitGPUShaders(void); +void GLSL_ShutdownGPUShaders(void); +void GLSL_VertexAttribPointers(uint32_t attribBits); +void GLSL_BindProgram(shaderProgram_t * program); + +void GLSL_SetUniformInt(shaderProgram_t *program, int uniformNum, GLint value); +void GLSL_SetUniformFloat(shaderProgram_t *program, int uniformNum, GLfloat value); +void GLSL_SetUniformFloat5(shaderProgram_t *program, int uniformNum, const vec5_t v); +void GLSL_SetUniformVec2(shaderProgram_t *program, int uniformNum, const vec2_t v); +void GLSL_SetUniformVec3(shaderProgram_t *program, int uniformNum, const vec3_t v); +void GLSL_SetUniformVec4(shaderProgram_t *program, int uniformNum, const vec4_t v); +void GLSL_SetUniformMat4(shaderProgram_t *program, int uniformNum, const mat4_t matrix); + +shaderProgram_t *GLSL_GetGenericShaderProgram(int stage); + +/* +============================================================ + +SCENE GENERATION + +============================================================ +*/ + +void R_InitNextFrame( void ); + +void RE_ClearScene( void ); +void RE_AddRefEntityToScene( const refEntity_t *ent ); +void RE_AddPolyToScene( qhandle_t hShader , int numVerts, const polyVert_t *verts, int num ); +void RE_AddLightToScene( const vec3_t org, float intensity, float r, float g, float b ); +void RE_AddAdditiveLightToScene( const vec3_t org, float intensity, float r, float g, float b ); +void RE_BeginScene( const refdef_t *fd ); +void RE_RenderScene( const refdef_t *fd ); +void RE_EndScene( void ); + +/* +============================================================= + +UNCOMPRESSING BONES + +============================================================= +*/ + +#define MC_BITS_X (16) +#define MC_BITS_Y (16) +#define MC_BITS_Z (16) +#define MC_BITS_VECT (16) + +#define MC_SCALE_X (1.0f/64) +#define MC_SCALE_Y (1.0f/64) +#define MC_SCALE_Z (1.0f/64) + +void MC_UnCompress(float mat[3][4],const unsigned char * comp); + +/* +============================================================= + +ANIMATED MODELS + +============================================================= +*/ + +void R_MDRAddAnimSurfaces( trRefEntity_t *ent ); +void RB_MDRSurfaceAnim( mdrSurface_t *surface ); +bool R_LoadIQM (model_t *mod, void *buffer, int filesize, const char *name ); +void R_AddIQMSurfaces( trRefEntity_t *ent ); +void RB_IQMSurfaceAnim( surfaceType_t *surface ); +int R_IQMLerpTag( orientation_t *tag, iqmData_t *data, + int startFrame, int endFrame, + float frac, const char *tagName ); + +/* +============================================================= +============================================================= +*/ +void R_TransformModelToClip( const vec3_t src, const float *modelMatrix, const float *projectionMatrix, + vec4_t eye, vec4_t dst ); +void R_TransformClipToWindow( const vec4_t clip, const viewParms_t *view, vec4_t normalized, vec4_t window ); + +void RB_DeformTessGeometry( void ); + +void RB_CalcFogTexCoords( float *dstTexCoords ); + +void RB_CalcScaleTexMatrix( const float scale[2], float *matrix ); +void RB_CalcScrollTexMatrix( const float scrollSpeed[2], float *matrix ); +void RB_CalcRotateTexMatrix( float degsPerSecond, float *matrix ); +void RB_CalcTurbulentFactors( const waveForm_t *wf, float *amplitude, float *now ); +void RB_CalcTransformTexMatrix( const texModInfo_t *tmi, float *matrix ); +void RB_CalcStretchTexMatrix( const waveForm_t *wf, float *matrix ); + +void RB_CalcModulateColorsByFog( unsigned char *dstColors ); +float RB_CalcWaveAlphaSingle( const waveForm_t *wf ); +float RB_CalcWaveColorSingle( const waveForm_t *wf ); + +/* +============================================================= + +RENDERER BACK END FUNCTIONS + +============================================================= +*/ + +void RB_ExecuteRenderCommands( const void *data ); + +/* +============================================================= + +RENDERER BACK END COMMAND QUEUE + +============================================================= +*/ + +#define MAX_RENDER_COMMANDS 0x40000 + +typedef struct { + byte cmds[MAX_RENDER_COMMANDS]; + int used; +} renderCommandList_t; + +typedef struct { + int commandId; + float color[4]; +} setColorCommand_t; + +typedef struct { + int commandId; + int buffer; +} drawBufferCommand_t; + +typedef struct { + int commandId; + image_t *image; + int width; + int height; + void *data; +} subImageCommand_t; + +typedef struct { + int commandId; +} swapBuffersCommand_t; + +typedef struct { + int commandId; + int buffer; +} endFrameCommand_t; + +typedef struct { + int commandId; + shader_t *shader; + float x, y; + float w, h; + float s1, t1; + float s2, t2; +} stretchPicCommand_t; + +typedef struct { + int commandId; + trRefdef_t refdef; + viewParms_t viewParms; + drawSurf_t *drawSurfs; + int numDrawSurfs; +} drawSurfsCommand_t; + +typedef struct { + int commandId; + int x; + int y; + int width; + int height; + char *fileName; + bool jpeg; +} screenshotCommand_t; + +typedef struct { + int commandId; + int width; + int height; + byte *captureBuffer; + byte *encodeBuffer; + bool motionJpeg; +} videoFrameCommand_t; + +typedef struct +{ + int commandId; + + GLboolean rgba[4]; +} colorMaskCommand_t; + +typedef struct +{ + int commandId; +} clearDepthCommand_t; + +typedef struct { + int commandId; + int map; + int cubeSide; +} capShadowmapCommand_t; + +typedef struct { + int commandId; + trRefdef_t refdef; + viewParms_t viewParms; +} postProcessCommand_t; + +typedef struct { + int commandId; +} exportCubemapsCommand_t; + +typedef enum { + RC_END_OF_LIST, + RC_SET_COLOR, + RC_STRETCH_PIC, + RC_DRAW_SURFS, + RC_DRAW_BUFFER, + RC_SWAP_BUFFERS, + RC_SCREENSHOT, + RC_VIDEOFRAME, + RC_COLORMASK, + RC_CLEARDEPTH, + RC_CAPSHADOWMAP, + RC_POSTPROCESS, + RC_EXPORT_CUBEMAPS +} renderCommand_t; + + +// these are sort of arbitrary limits. +// the limits apply to the sum of all scenes in a frame -- +// the main view, all the 3D icons, etc +#define MAX_POLYS 600 +#define MAX_POLYVERTS 3000 + +// all of the information needed by the back end must be +// contained in a backEndData_t +typedef struct { + drawSurf_t drawSurfs[MAX_DRAWSURFS]; + dlight_t dlights[MAX_DLIGHTS]; + trRefEntity_t entities[MAX_REFENTITIES]; + srfPoly_t *polys;//[MAX_POLYS]; + polyVert_t *polyVerts;//[MAX_POLYVERTS]; + pshadow_t pshadows[MAX_CALC_PSHADOWS]; + renderCommandList_t commands; +} backEndData_t; + +extern int max_polys; +extern int max_polyverts; + +extern backEndData_t *backEndData; // the second one may not be allocated + + +void *R_GetCommandBuffer( int bytes ); +void RB_ExecuteRenderCommands( const void *data ); + +void R_IssuePendingRenderCommands( void ); + +void R_AddDrawSurfCmd( drawSurf_t *drawSurfs, int numDrawSurfs ); +void R_AddCapShadowmapCmd( int dlight, int cubeSide ); +void R_AddPostProcessCmd (void); + +void RE_SetColor( const float *rgba ); +void RE_SetClipRegion( const float *region ); +void RE_StretchPic ( float x, float y, float w, float h, + float s1, float t1, float s2, float t2, qhandle_t hShader ); +void RE_BeginFrame( stereoFrame_t stereoFrame ); +void RE_EndFrame( int *frontEndMsec, int *backEndMsec ); +void RE_SaveJPG(char * filename, int quality, int image_width, int image_height, + unsigned char *image_buffer, int padding); +size_t RE_SaveJPGToBuffer(byte *buffer, size_t bufSize, int quality, + int image_width, int image_height, byte *image_buffer, int padding); +void RE_TakeVideoFrame( int width, int height, + byte *captureBuffer, byte *encodeBuffer, bool motionJpeg ); + + +#endif //TR_LOCAL_H |