445 lines
13 KiB
C
445 lines
13 KiB
C
/*
|
|
Copyright (C) 2002-2007 Victor Luchits
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
#ifndef __R_BACKEND_H__
|
|
#define __R_BACKEND_H__
|
|
|
|
#define MAX_TEXTURES 4096
|
|
#define MAX_ARRAY_VERTS 4096
|
|
#define MAX_ARRAY_ELEMENTS MAX_ARRAY_VERTS*6
|
|
#define MAX_ARRAY_TRIANGLES MAX_ARRAY_ELEMENTS/3
|
|
#define MAX_ARRAY_NEIGHBORS MAX_ARRAY_TRIANGLES*3
|
|
|
|
enum
|
|
{
|
|
VBO_VERTS,
|
|
VBO_NORMALS,
|
|
VBO_COLORS,
|
|
VBO_TC0,
|
|
VBO_ENDMARKER
|
|
};
|
|
|
|
#define MAX_SHADOWGROUPS 32
|
|
#define MAX_VERTEX_BUFFER_OBJECTS VBO_ENDMARKER+MAX_TEXTURE_UNITS-1
|
|
|
|
extern ALIGN( 16 ) vec4_t inVertsArray[MAX_ARRAY_VERTS];
|
|
extern ALIGN( 16 ) vec4_t inNormalsArray[MAX_ARRAY_VERTS];
|
|
extern vec4_t inSVectorsArray[MAX_ARRAY_VERTS];
|
|
extern elem_t inElemsArray[MAX_ARRAY_ELEMENTS];
|
|
extern vec2_t inCoordsArray[MAX_ARRAY_VERTS];
|
|
extern vec2_t inLightmapCoordsArray[LM_STYLES][MAX_ARRAY_VERTS];
|
|
extern rgba_t inColorsArray[LM_STYLES][MAX_ARRAY_VERTS];
|
|
|
|
extern elem_t *elemsArray;
|
|
extern vec4_t *vertsArray;
|
|
extern vec4_t *normalsArray;
|
|
extern vec4_t *sVectorsArray;
|
|
extern vec2_t *coordsArray;
|
|
extern vec2_t *lightmapCoordsArray[LM_STYLES];
|
|
extern rgba_t colorArray[MAX_ARRAY_VERTS];
|
|
extern int r_features;
|
|
|
|
//===================================================================
|
|
typedef struct ref_buffer_s
|
|
{
|
|
byte *pointer;
|
|
int size;
|
|
uint usage;
|
|
uint bufNum;
|
|
} ref_buffer_t;
|
|
|
|
typedef struct
|
|
{
|
|
uint numVerts;
|
|
uint numElems;
|
|
uint numColors;
|
|
|
|
uint c_totalVerts;
|
|
uint c_totalTris;
|
|
uint c_totalFlushes;
|
|
uint c_totalKeptLocks;
|
|
} ref_backacc_t;
|
|
|
|
typedef struct
|
|
{
|
|
// renderer global variables
|
|
int registration_sequence;
|
|
kRenderMode_t iRenderMode;
|
|
|
|
// vbo stuff
|
|
int numVertexBufferObjects;
|
|
ref_buffer_t vertexBufferObjects[MAX_VERTEX_BUFFER_OBJECTS];
|
|
ref_buffer_t *vertexBuffer;
|
|
ref_buffer_t *normalBuffer;
|
|
ref_buffer_t *colorsBuffer;
|
|
ref_buffer_t *tcoordBuffer[MAX_TEXTURE_UNITS];
|
|
|
|
// OpenGL matrix states
|
|
bool modelviewIdentity;
|
|
|
|
// builtin textures
|
|
texture_t *cinTexture; // cinematic texture
|
|
texture_t *portaltexture1; // portal view
|
|
texture_t *portaltexture2; // refraction image for distortions
|
|
texture_t *defaultTexture; // use for bad textures
|
|
texture_t *particleTexture; // little dot for particles
|
|
texture_t *whiteTexture;
|
|
texture_t *blackTexture;
|
|
texture_t *blankbumpTexture;
|
|
texture_t *dlightTexture;
|
|
texture_t *dspotlightTexture;
|
|
texture_t *normalizeTexture; // cubemap
|
|
texture_t *fogTexture;
|
|
texture_t *skyTexture;
|
|
texture_t *coronaTexture;
|
|
texture_t *defaultConchars;
|
|
texture_t *shadowmapTextures[MAX_SHADOWGROUPS];
|
|
texture_t *lightmapTextures[MAX_TEXTURES];
|
|
|
|
// utility shaders
|
|
ref_shader_t *defaultShader; // generic black texture
|
|
ref_shader_t *currentSkyShader; // ponter to sky shader for current map
|
|
} ref_globals_t;
|
|
|
|
extern ref_globals_t tr;
|
|
extern ref_backacc_t r_backacc;
|
|
|
|
//===================================================================
|
|
|
|
void R_BackendInit( void );
|
|
void R_BackendShutdown( void );
|
|
void R_BackendStartFrame( void );
|
|
void R_BackendEndFrame( void );
|
|
void R_BackendResetCounters( void );
|
|
|
|
void R_BackendBeginTriangleOutlines( void );
|
|
void R_BackendEndTriangleOutlines( void );
|
|
|
|
void R_BackendCleanUpTextureUnits( void );
|
|
|
|
void R_BackendSetPassMask( int mask );
|
|
void R_BackendResetPassMask( void );
|
|
|
|
void R_DrawPhysDebug( void );
|
|
|
|
void R_InitVertexBuffers( void );
|
|
void R_ShutdownVertexBuffers( void );
|
|
ref_buffer_t *R_AllocVertexBuffer( size_t size, GLuint usage );
|
|
void R_UpdateVertexBuffer( ref_buffer_t *vertexBuffer, const void *data, size_t size );
|
|
|
|
void R_LockArrays( int numverts );
|
|
void R_UnlockArrays( void );
|
|
void R_UnlockArrays( void );
|
|
void R_FlushArrays( void );
|
|
void R_FlushArraysMtex( void );
|
|
void R_ClearArrays( void );
|
|
|
|
static _inline void R_PushElems( elem_t *elems, int count, int features )
|
|
{
|
|
elem_t *currentElem;
|
|
|
|
// this is a fast path for non-batched geometry, use carefully
|
|
// used on pics, sprites, .dpm, .md3 and .md2 models
|
|
if( features & MF_NONBATCHED )
|
|
{
|
|
// simply change elemsArray to point at elems
|
|
r_backacc.numElems = count;
|
|
elemsArray = currentElem = elems;
|
|
}
|
|
else
|
|
{
|
|
currentElem = elemsArray + r_backacc.numElems;
|
|
r_backacc.numElems += count;
|
|
|
|
// the following code assumes that R_PushElems is fed with triangles...
|
|
for(; count > 0; count -= 3, elems += 3, currentElem += 3 )
|
|
{
|
|
currentElem[0] = r_backacc.numVerts + elems[0];
|
|
currentElem[1] = r_backacc.numVerts + elems[1];
|
|
currentElem[2] = r_backacc.numVerts + elems[2];
|
|
}
|
|
}
|
|
}
|
|
|
|
static _inline void R_PushTrifanElems( int numverts )
|
|
{
|
|
int count;
|
|
elem_t *currentElem;
|
|
|
|
currentElem = elemsArray + r_backacc.numElems;
|
|
r_backacc.numElems += numverts + numverts + numverts - 6;
|
|
|
|
for( count = 2; count < numverts; count++, currentElem += 3 )
|
|
{
|
|
currentElem[0] = r_backacc.numVerts;
|
|
currentElem[1] = r_backacc.numVerts + count - 1;
|
|
currentElem[2] = r_backacc.numVerts + count;
|
|
}
|
|
}
|
|
|
|
static _inline void R_PushMesh( const mesh_t *mesh, int features )
|
|
{
|
|
int numverts;
|
|
|
|
if( !( mesh->elems || ( features & MF_TRIFAN ) ) || !mesh->xyzArray )
|
|
return;
|
|
|
|
r_features = features;
|
|
|
|
if( features & MF_TRIFAN )
|
|
R_PushTrifanElems( mesh->numVertexes );
|
|
else
|
|
R_PushElems( mesh->elems, mesh->numElems, features );
|
|
|
|
numverts = mesh->numVertexes;
|
|
|
|
if( features & MF_NONBATCHED )
|
|
{
|
|
if( features & MF_DEFORMVS )
|
|
{
|
|
if( mesh->xyzArray != inVertsArray )
|
|
Mem_Copy( inVertsArray, mesh->xyzArray, numverts * sizeof( vec4_t ) );
|
|
|
|
if( ( features & MF_NORMALS ) && mesh->normalsArray && ( mesh->normalsArray != inNormalsArray ) )
|
|
Mem_Copy( inNormalsArray, mesh->normalsArray, numverts * sizeof( vec4_t ) );
|
|
}
|
|
else
|
|
{
|
|
vertsArray = mesh->xyzArray;
|
|
|
|
if( ( features & MF_NORMALS ) && mesh->normalsArray )
|
|
normalsArray = mesh->normalsArray;
|
|
}
|
|
|
|
if( ( features & MF_STCOORDS ) && mesh->stArray )
|
|
coordsArray = mesh->stArray;
|
|
|
|
if( ( features & MF_LMCOORDS ) && mesh->lmstArray[0] )
|
|
{
|
|
lightmapCoordsArray[0] = mesh->lmstArray[0];
|
|
if( features & MF_LMCOORDS1 )
|
|
{
|
|
lightmapCoordsArray[1] = mesh->lmstArray[1];
|
|
if( features & MF_LMCOORDS2 )
|
|
{
|
|
lightmapCoordsArray[2] = mesh->lmstArray[2];
|
|
if( features & MF_LMCOORDS3 )
|
|
lightmapCoordsArray[3] = mesh->lmstArray[3];
|
|
}
|
|
}
|
|
}
|
|
|
|
if( ( features & MF_SVECTORS ) && mesh->sVectorsArray )
|
|
sVectorsArray = mesh->sVectorsArray;
|
|
}
|
|
else
|
|
{
|
|
if( mesh->xyzArray != inVertsArray )
|
|
Mem_Copy( inVertsArray[r_backacc.numVerts], mesh->xyzArray, numverts * sizeof( vec4_t ) );
|
|
|
|
if( ( features & MF_NORMALS ) && mesh->normalsArray && (mesh->normalsArray != inNormalsArray ) )
|
|
Mem_Copy( inNormalsArray[r_backacc.numVerts], mesh->normalsArray, numverts * sizeof( vec4_t ) );
|
|
|
|
if( ( features & MF_STCOORDS ) && mesh->stArray && (mesh->stArray != inCoordsArray ) )
|
|
Mem_Copy( inCoordsArray[r_backacc.numVerts], mesh->stArray, numverts * sizeof( vec2_t ) );
|
|
|
|
if( ( features & MF_LMCOORDS ) && mesh->lmstArray[0] )
|
|
{
|
|
Mem_Copy( inLightmapCoordsArray[0][r_backacc.numVerts], mesh->lmstArray[0], numverts * sizeof( vec2_t ) );
|
|
if( features & MF_LMCOORDS1 )
|
|
{
|
|
Mem_Copy( inLightmapCoordsArray[1][r_backacc.numVerts], mesh->lmstArray[1], numverts * sizeof( vec2_t ) );
|
|
if( features & MF_LMCOORDS2 )
|
|
{
|
|
Mem_Copy( inLightmapCoordsArray[2][r_backacc.numVerts], mesh->lmstArray[2], numverts * sizeof( vec2_t ) );
|
|
if( features & MF_LMCOORDS3 )
|
|
Mem_Copy( inLightmapCoordsArray[3][r_backacc.numVerts], mesh->lmstArray[3], numverts * sizeof( vec2_t ) );
|
|
}
|
|
}
|
|
}
|
|
|
|
if( ( features & MF_SVECTORS ) && mesh->sVectorsArray && (mesh->sVectorsArray != inSVectorsArray ) )
|
|
Mem_Copy( inSVectorsArray[r_backacc.numVerts], mesh->sVectorsArray, numverts * sizeof( vec4_t ) );
|
|
}
|
|
|
|
if( ( features & MF_COLORS ) && mesh->colorsArray[0] )
|
|
{
|
|
Mem_Copy( inColorsArray[0][r_backacc.numVerts], mesh->colorsArray[0], numverts * sizeof( rgba_t ) );
|
|
if( features & MF_COLORS1 )
|
|
{
|
|
Mem_Copy( inColorsArray[1][r_backacc.numVerts], mesh->colorsArray[1], numverts * sizeof( rgba_t ) );
|
|
if( features & MF_COLORS2 )
|
|
{
|
|
Mem_Copy( inColorsArray[2][r_backacc.numVerts], mesh->colorsArray[2], numverts * sizeof( rgba_t ) );
|
|
if( features & MF_COLORS3 )
|
|
Mem_Copy( inColorsArray[3][r_backacc.numVerts], mesh->colorsArray[3], numverts * sizeof( rgba_t ) );
|
|
}
|
|
}
|
|
}
|
|
|
|
r_backacc.numVerts += numverts;
|
|
r_backacc.c_totalVerts += numverts;
|
|
}
|
|
|
|
static _inline bool R_MeshOverflow( const mesh_t *mesh )
|
|
{
|
|
return ( r_backacc.numVerts + mesh->numVertexes > MAX_ARRAY_VERTS ||
|
|
r_backacc.numElems + mesh->numElems > MAX_ARRAY_ELEMENTS );
|
|
}
|
|
|
|
static _inline bool R_MeshOverflow2( const mesh_t *mesh1, const mesh_t *mesh2 )
|
|
{
|
|
return ( r_backacc.numVerts + mesh1->numVertexes + mesh2->numVertexes > MAX_ARRAY_VERTS ||
|
|
r_backacc.numElems + mesh1->numElems + mesh2->numElems > MAX_ARRAY_ELEMENTS );
|
|
}
|
|
|
|
static _inline bool R_InvalidMesh( const mesh_t *mesh )
|
|
{
|
|
return ( !mesh->numVertexes || !mesh->numElems ||
|
|
mesh->numVertexes > MAX_ARRAY_VERTS || mesh->numElems > MAX_ARRAY_ELEMENTS );
|
|
}
|
|
|
|
void R_RenderMeshBuffer( const meshbuffer_t *mb );
|
|
|
|
/*
|
|
=======================================================================
|
|
|
|
GL STATE MACHINE
|
|
|
|
=======================================================================
|
|
*/
|
|
// render supported extensions
|
|
// this part are shared with engine.dll
|
|
#define R_OPENGL_110 0 // base
|
|
#define R_WGL_SWAPCONTROL 1
|
|
#define R_HARDWARE_GAMMA_CONTROL 2
|
|
#define R_ARB_VERTEX_BUFFER_OBJECT_EXT 3
|
|
#define R_ENV_COMBINE_EXT 4
|
|
#define R_ARB_MULTITEXTURE 5
|
|
#define R_TEXTURECUBEMAP_EXT 6
|
|
#define R_DOT3_ARB_EXT 7
|
|
#define R_ANISOTROPY_EXT 8
|
|
#define R_TEXTURE_LODBIAS 9
|
|
#define R_OCCLUSION_QUERIES_EXT 10
|
|
#define R_TEXTURE_COMPRESSION_EXT 11
|
|
#define R_SHADER_GLSL100_EXT 12
|
|
|
|
// this part are private for render.dll
|
|
#define R_WGL_3DFX_GAMMA_CONTROL 13
|
|
#define R_SGIS_MIPMAPS_EXT 14
|
|
#define R_DRAW_RANGEELEMENTS_EXT 15
|
|
#define R_LOCKARRAYS_EXT 16
|
|
#define R_TEXTURE_3D_EXT 17
|
|
#define R_CLAMPTOEDGE_EXT 18
|
|
#define R_BLEND_MINMAX_EXT 19
|
|
#define R_STENCILTWOSIDE_EXT 20
|
|
#define R_BLEND_SUBTRACT_EXT 21
|
|
#define R_SHADER_OBJECTS_EXT 22
|
|
#define R_VERTEX_SHADER_EXT 23 // glsl vertex program
|
|
#define R_FRAGMENT_SHADER_EXT 24 // glsl fragment program
|
|
#define R_EXT_POINTPARAMETERS 25
|
|
#define R_SEPARATESTENCIL_EXT 26
|
|
#define R_ARB_TEXTURE_NPOT_EXT 27
|
|
#define R_CUSTOM_VERTEX_ARRAY_EXT 28
|
|
#define R_TEXTURE_ENV_ADD_EXT 29
|
|
#define R_CLAMP_TEXBORDER_EXT 30
|
|
#define R_DEPTH_TEXTURE 31
|
|
#define R_SHADOW_EXT 32
|
|
#define R_GLSL_NO_HALF_TYPES 33 // fake extension
|
|
#define R_GLSL_BRANCHING 34 // fake extension
|
|
#define R_EXTCOUNT 35
|
|
|
|
typedef struct
|
|
{
|
|
const char *renderer_string; // ptrs to OpenGL32.dll, use with caution
|
|
const char *vendor_string;
|
|
const char *version_string;
|
|
|
|
// list of supported extensions
|
|
const char *extensions_string;
|
|
byte extension[R_EXTCOUNT];
|
|
|
|
int max_texture_units;
|
|
GLint max_2d_texture_size;
|
|
GLint max_2d_rectangle_size;
|
|
GLint max_3d_texture_size;
|
|
GLint max_cubemap_texture_size;
|
|
GLint texRectangle;
|
|
|
|
GLfloat max_texture_anisotropy;
|
|
GLfloat max_texture_lodbias;
|
|
|
|
int color_bits;
|
|
int depth_bits;
|
|
int stencil_bits;
|
|
|
|
bool allowCDS;
|
|
bool deviceSupportsGamma;
|
|
int prev_mode;
|
|
} glconfig_t;
|
|
|
|
typedef struct
|
|
{
|
|
int flags;
|
|
|
|
word gammaRamp[768]; // current gamma ramp
|
|
word stateRamp[768]; // original gamma ramp
|
|
|
|
int width, height;
|
|
bool fullScreen;
|
|
bool wideScreen;
|
|
|
|
bool initializedMedia;
|
|
|
|
int activeTMU;
|
|
GLuint currentTextures[MAX_TEXTURE_UNITS];
|
|
GLenum currentEnvModes[MAX_TEXTURE_UNITS];
|
|
GLboolean texIdentityMatrix[MAX_TEXTURE_UNITS];
|
|
GLint genSTEnabled[MAX_TEXTURE_UNITS]; // 0 - disabled, OR 1 - S, OR 2 - T, OR 4 - R
|
|
GLint texCoordArrayMode[MAX_TEXTURE_UNITS]; // 0 - disabled, 1 - enabled, 2 - cubemap
|
|
|
|
rgba_t draw_color;
|
|
kRenderMode_t draw_rendermode; // rendermode for drawing
|
|
int draw_frame; // will be reset after each drawing
|
|
|
|
int faceCull;
|
|
int frontFace;
|
|
|
|
bool stencilEnabled;
|
|
bool in2DMode;
|
|
} glstate_t;
|
|
|
|
extern glconfig_t glConfig;
|
|
extern glstate_t glState;
|
|
|
|
// r_register.c
|
|
void GL_InitBackend( void );
|
|
bool GL_Support( int r_ext );
|
|
void GL_InitExtensions( void );
|
|
void GL_ShutdownBackend( void );
|
|
void GL_UpdateSwapInterval( void );
|
|
void GL_UpdateGammaRamp( void );
|
|
void GL_SetExtension( int r_ext, int enable );
|
|
void GL_BuildGammaTable( void );
|
|
|
|
bool R_Init_OpenGL( void );
|
|
void R_Free_OpenGL( void );
|
|
|
|
#endif /*__R_BACKEND_H__*/
|