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xash3d-fwgs/ref/gl/gl2_shim/gl2_shim.c

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/*
gl2wrap_shim.c - vitaGL custom immediate mode shim
Copyright (C) 2023 fgsfds
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
/*
this is a "replacement" for vitaGL's immediate mode tailored specifically for xash
this will only provide performance gains if vitaGL is built with DRAW_SPEEDHACK=1
since that makes it assume that all vertex data pointers are GPU-mapped
*/
#include "gl_local.h"
#ifndef XASH_GL_STATIC
#include "gl2_shim.h"
#include <malloc.h>
//#include "xash3d_mathlib.h"
#define MAX_SHADERLEN 4096
// increase this when adding more attributes
#define MAX_PROGS 32
#define MAX_BEGINEND_VERTS 8192
void* (APIENTRY* _pglMapBufferRange)(GLenum target, GLsizei offset, GLsizei length, GLbitfield access);
void* (APIENTRY* _pglFlushMappedBufferRange)(GLenum target, GLsizei offset, GLsizei length);
void* (APIENTRY* _pglDrawRangeElementsBaseVertex)( GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices, GLuint vertex );
void (APIENTRY*_pglBufferStorage)( GLenum target,
GLsizei size,
const GLvoid * data,
GLbitfield flags);
void (*_pglWaitSync)( void * sync,
GLbitfield flags,
uint64_t timeout);
GLuint (*_pglClientWaitSync)( void * sync,
GLbitfield flags,
uint64_t timeout);
void *(*_pglFenceSync)( GLenum condition,
GLbitfield flags);
void (*_pglDeleteSync)( void * sync );
extern ref_api_t gEngfuncs;
enum gl2wrap_attrib_e
{
GL2_ATTR_POS = 0, // 1
GL2_ATTR_COLOR = 1, // 2
GL2_ATTR_TEXCOORD0 = 2, // 4
GL2_ATTR_TEXCOORD1 = 3, // 8
GL2_ATTR_MAX
};
// continuation of previous enum
enum gl2wrap_flag_e
{
GL2_FLAG_ALPHA_TEST = GL2_ATTR_MAX, // 16
GL2_FLAG_FOG, // 32
GL2_FLAG_NORMAL,
GL2_FLAG_MAX
};
typedef struct
{
GLuint flags;
GLint attridx[GL2_ATTR_MAX];
GLuint glprog;
GLint ucolor;
GLint ualpha;
GLint utex0;
GLint utex1;
GLint ufog;
GLint uMVP;
GLuint *vao_begin;
} gl2wrap_prog_t;
static const char *gl2wrap_vert_src =
#include "vertex.glsl.inc"
;
static const char *gl2wrap_frag_src =
#include "fragment.glsl.inc"
;
static int gl2wrap_init = 0;
static struct
{
GLfloat *attrbuf[GL2_ATTR_MAX];
GLuint *attrbufobj[GL2_ATTR_MAX];
void **mappings[GL2_ATTR_MAX];
//GLuint attrbufpers[GL2_ATTR_MAX];
GLuint attrbufcycle;
GLuint cur_flags;
GLint begin;
GLint end;
GLenum prim;
GLfloat color[4];
GLfloat fog[4]; // color + density
GLfloat alpharef;
gl2wrap_prog_t progs[MAX_PROGS];
gl2wrap_prog_t *cur_prog;
GLboolean uchanged;
GLuint triquads_ibo[4];
} gl2wrap;
static struct
{
qboolean buf_storage; // buffer storage is enabled, buffers mapped persistently (zero-copy glBegins)
qboolean incremental; // incremental buffer streaming
qboolean supports_mapbuffer; // set to false on systems with mapbuffer issues
qboolean vao_mandatory; // even if incremental streaming unavailiable (it is very slow without mapbuffers) force VAO+VBO (WebGL-like or broken glcore)
qboolean coherent; // enable MAP_COHERENT_BIT on persist mappings
qboolean async; // enable MAP_UNSYNCHRONIZED_BIT on temporary mappings
qboolean force_flush; // enable MAP_FLUSH_EXPLICIT_BIT and FlushMappedBufferRange calls
uint32_t cycle_buffers; // cycle N buffers during draw to reduce locking in non-incremental mode
uint32_t version;
} gl2wrap_config;
static struct
{
float mvp[16], mv[16], pr[16], dummy[16];
GLenum mode;
float *current;
uint64_t update;
} gl2wrap_matrix;
static struct
{
qboolean alpha_test;
qboolean fog;
GLuint vbo;
GLuint tmu;
} gl2wrap_state;
//#define QUAD_BATCH
#ifdef QUAD_BATCH
static struct
{
unsigned int texture;
unsigned int flags;
GLboolean active;
} gl2wrap_quad;
#endif
static const int gl2wrap_attr_size[GL2_ATTR_MAX] = { 3, 4, 2, 2 };
static const char *gl2wrap_flag_name[GL2_FLAG_MAX] =
{
"ATTR_POSITION",
"ATTR_COLOR",
"ATTR_TEXCOORD0",
"ATTR_TEXCOORD1",
"FEAT_ALPHA_TEST",
"FEAT_FOG",
"ATTR_NORMAL",
};
static const char *gl2wrap_attr_name[GL2_ATTR_MAX] =
{
"inPosition",
"inColor",
"inTexCoord0",
"inTexCoord1",
};
static void (APIENTRY*rpglEnable)(GLenum e);
static void (APIENTRY*rpglDisable)(GLenum e);
static void (APIENTRY*rpglDrawElements )( GLenum mode, GLsizei count, GLenum type, const GLvoid *indices );
static void (APIENTRY*rpglDrawArrays )(GLenum mode, GLint first, GLsizei count);
static void (APIENTRY*rpglDrawRangeElements )( GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices );
static void (APIENTRY*rpglBindBufferARB)( GLenum buf, GLuint obj);
#ifdef QUAD_BATCH
void GL2_FlushPrims( void );
static void APIENTRY (*rpglBindTexture)( GLenum tex, GLuint obj);
static void APIENTRY GL2_BindTexture( GLenum tex, GLuint obj)
{
if( gl2wrap_quad.texture != obj )
{
GL2_FlushPrims();
gl2wrap_quad.texture = obj;
}
rpglBindTexture( tex, obj );
}
#endif
static char *GL_PrintInfoLog( GLhandleARB object )
{
static char msg[8192];
int maxLength = 0;
pglGetObjectParameterivARB( object, GL_OBJECT_INFO_LOG_LENGTH_ARB, &maxLength );
if( maxLength >= sizeof( msg ))
{
//ALERT( at_warning, "GL_PrintInfoLog: message exceeds %i symbols\n", sizeof( msg ));
maxLength = sizeof( msg ) - 1;
}
pglGetInfoLogARB( object, maxLength, &maxLength, msg );
return msg;
}
static GLuint GL2_GenerateShader( gl2wrap_prog_t *prog, GLenum type )
{
char *shader, shader_buf[MAX_SHADERLEN + 1];
char tmp[256];
int i;
GLint status, len;
GLuint id, loc;
int version = gl2wrap_config.version;
shader = shader_buf;
//shader[0] = '\n';
shader[0] = 0;
Q_snprintf(shader, MAX_SHADERLEN, "#version %d%s\n", version, version >= 300 && version < 330 ? " es":"");
Q_snprintf(tmp, sizeof( tmp ), "#define VER %d\n", version);
Q_strncat( shader, tmp, MAX_SHADERLEN );
for ( i = 0; i < GL2_FLAG_MAX; ++i )
{
Q_snprintf( tmp, sizeof( tmp ), "#define %s %d\n", gl2wrap_flag_name[i], prog->flags & ( 1 << i ) );
Q_strncat( shader, tmp, MAX_SHADERLEN );
}
if( version >= 310 )
{
loc = 0;
for ( i = 0; i < GL2_ATTR_MAX; ++i )
{
if ( prog->flags & ( 1 << i ) )
{
Q_snprintf( tmp, sizeof( tmp ), "#define LOC_%s %d\n", gl2wrap_flag_name[i], loc++ );
Q_strncat( shader, tmp, MAX_SHADERLEN );
prog->attridx[i] = loc;
}
else
{
prog->attridx[i] = -1;
}
}
}
if ( type == GL_FRAGMENT_SHADER_ARB )
Q_strncat( shader, gl2wrap_frag_src, MAX_SHADERLEN );
else
Q_strncat( shader, gl2wrap_vert_src, MAX_SHADERLEN );
id = pglCreateShaderObjectARB( type );
len = Q_strlen( shader );
pglShaderSourceARB( id, 1, (void *)&shader, &len );
pglCompileShaderARB( id );
pglGetObjectParameterivARB( id, GL_OBJECT_COMPILE_STATUS_ARB, &status );
if ( status == GL_FALSE )
{
gEngfuncs.Con_Reportf( S_ERROR "GL2_GenerateShader( 0x%04x, 0x%x ): compile failed: %s\n", prog->flags, type, GL_PrintInfoLog(id));
gEngfuncs.Con_DPrintf( "Shader text:\n%s\n\n", shader );
pglDeleteObjectARB( id );
return 0;
}
return id;
}
static gl2wrap_prog_t *GL2_GetProg( const GLuint flags )
{
int i, loc, status;
GLuint vp, fp, glprog;
gl2wrap_prog_t *prog;
// try to find existing prog matching this feature set
if ( gl2wrap.cur_prog && gl2wrap.cur_prog->flags == flags )
return gl2wrap.cur_prog;
for ( i = 0; i < MAX_PROGS; ++i )
{
if ( gl2wrap.progs[i].flags == flags )
return &gl2wrap.progs[i];
else if ( gl2wrap.progs[i].flags == 0 )
break;
}
if ( i == MAX_PROGS )
{
gEngfuncs.Host_Error( "GL2_GetProg(): Ran out of program slots for 0x%04x\n", flags );
return NULL;
}
// new prog; generate shaders
gEngfuncs.Con_DPrintf( S_NOTE "GL2_GetProg(): Generating progs for 0x%04x\n", flags );
prog = &gl2wrap.progs[i];
prog->flags = flags;
vp = GL2_GenerateShader( prog, GL_VERTEX_SHADER_ARB );
fp = GL2_GenerateShader( prog, GL_FRAGMENT_SHADER_ARB );
if ( !vp || !fp )
{
prog->flags = 0;
return NULL;
}
glprog = pglCreateProgramObjectARB();
pglAttachObjectARB( glprog, vp );
pglAttachObjectARB( glprog, fp );
loc = 0;
for ( i = 0; i < GL2_ATTR_MAX; ++i )
{
if ( flags & ( 1 << i ) )
{
prog->attridx[i] = loc;
if(gl2wrap_config.version <= 300)
pglBindAttribLocationARB( glprog, loc++, gl2wrap_attr_name[i] );
else
loc++;
}
else
{
prog->attridx[i] = -1;
}
}
pglLinkProgramARB( glprog );
pglDeleteObjectARB( vp );
pglDeleteObjectARB( fp );
/// TODO: detect arb/core shaders in engine
#if 0 //ndef XASH_GLES
pglGetObjectParameterivARB( glprog, GL_OBJECT_LINK_STATUS_ARB, &status );
if ( status == GL_FALSE )
{
gEngfuncs.Con_Reportf( S_ERROR "GL2_GetProg(): Failed linking progs for 0x%04x!\n%s\n", prog->flags, GL_PrintInfoLog(glprog) );
prog->flags = 0;
pglDeleteObjectARB( glprog );
return NULL;
}
#endif
prog->ucolor = pglGetUniformLocationARB( glprog, "uColor" );
prog->ualpha = pglGetUniformLocationARB( glprog, "uAlphaTest" );
prog->utex0 = pglGetUniformLocationARB( glprog, "uTex0" );
prog->utex1 = pglGetUniformLocationARB( glprog, "uTex1" );
prog->ufog = pglGetUniformLocationARB( glprog, "uFog" );
prog->uMVP = pglGetUniformLocationARB( glprog, "uMVP" );
prog->vao_begin = malloc(gl2wrap_config.cycle_buffers * 4);
pglGenVertexArrays( gl2wrap_config.cycle_buffers, prog->vao_begin );
pglUseProgramObjectARB( glprog );
for ( i = 0; i < GL2_ATTR_MAX; ++i )
{
if( prog->attridx[i] >= 0 )
{
if(gl2wrap_config.vao_mandatory || gl2wrap_config.incremental )
{
for(int j = 0; j < gl2wrap_config.cycle_buffers; j++ )
{
pglBindVertexArray( prog->vao_begin[j] );
pglEnableVertexAttribArrayARB( prog->attridx[i] );
pglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap.attrbufobj[i][j] );
pglVertexAttribPointerARB( prog->attridx[i], gl2wrap_attr_size[i], GL_FLOAT, GL_FALSE, 0, 0 );
}
}
}
}
pglBindVertexArray( 0 );
// these never change
if ( prog->flags & ( 1U << GL2_ATTR_TEXCOORD0 ) && prog->utex0 >= 0 )
pglUniform1iARB( prog->utex0, 0 );
if ( prog->flags & ( 1U << GL2_ATTR_TEXCOORD1 ) && prog->utex1 >= 0 )
pglUniform1iARB( prog->utex1, 1 );
if( gl2wrap.cur_prog )
pglUseProgramObjectARB( gl2wrap.cur_prog->glprog );
prog->glprog = glprog;
gEngfuncs.Con_DPrintf( S_NOTE "GL2_GetProg(): Generated progs for 0x%04x\n", flags );
return prog;
}
static void GL2_UpdateMVP( gl2wrap_prog_t *prog);
static gl2wrap_prog_t *GL2_SetProg( const GLuint flags )
{
gl2wrap_prog_t *prog = NULL;
if ( flags && ( prog = GL2_GetProg( flags ) ) )
{
if ( prog != gl2wrap.cur_prog )
{
pglUseProgramObjectARB( prog->glprog );
gl2wrap.uchanged = GL_TRUE;
}
if ( gl2wrap.uchanged )
{
if ( prog->ualpha >= 0 )
pglUniform1fARB( prog->ualpha, gl2wrap.alpharef );
if ( prog->ucolor >= 0 )
pglUniform4fvARB( prog->ucolor, 1, gl2wrap.color );
if ( prog->ufog >= 0 )
pglUniform4fvARB( prog->ufog, 1, gl2wrap.fog );
gl2wrap.uchanged = GL_FALSE;
}
GL2_UpdateMVP( prog );
}
else
{
pglUseProgramObjectARB( 0 );
}
gl2wrap.cur_prog = prog;
return prog;
}
#define TRIQUADS_SIZE GL2_MAX_VERTS / 4 * 6
static void GL2_InitTriQuads( void )
{
int i;
for( i = 0; i < (!!_pglDrawRangeElementsBaseVertex?1:4); i++ )
{
int j;
GLushort triquads_array[TRIQUADS_SIZE * 6];
for( j = 0; j < TRIQUADS_SIZE; j++ )
{
triquads_array[j * 6] = j * 4 + i;
triquads_array[j * 6 + 1] = j * 4 + 1 + i;
triquads_array[j * 6 + 2] = j * 4 + 2 + i;
triquads_array[j * 6 + 3] = j * 4 + i;
triquads_array[j * 6 + 4] = j * 4 + 2 + i;
triquads_array[j * 6 + 5] = j * 4 + 3 + i;
}
pglGenBuffersARB( 1, &gl2wrap.triquads_ibo[i] );
rpglBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, gl2wrap.triquads_ibo[i] );
pglBufferDataARB( GL_ELEMENT_ARRAY_BUFFER_ARB, sizeof(triquads_array), triquads_array, GL_STATIC_DRAW_ARB );
}
rpglBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 );
}
static void GL2_InitIncrementalBuffer( int i, GLuint size )
{
gl2wrap.attrbufobj[i] = malloc(gl2wrap_config.cycle_buffers * 4);
if( gl2wrap_config.buf_storage )
gl2wrap.mappings[i] = malloc(gl2wrap_config.cycle_buffers * 8);
pglGenBuffersARB( gl2wrap_config.cycle_buffers, gl2wrap.attrbufobj[i] );
for(int j = 0; j < gl2wrap_config.cycle_buffers; j++ )
{
rpglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap.attrbufobj[i][j] );
if( gl2wrap_config.buf_storage )
{
_pglBufferStorage( GL_ARRAY_BUFFER_ARB, size, NULL,
0x0002 //GL_MAP_WRITE_BIT
| (gl2wrap_config.coherent?0x80:0)
| 0x40
);
gl2wrap.mappings[i][j] = _pglMapBufferRange(GL_ARRAY_BUFFER_ARB,
0,
size,
0x0002 //GL_MAP_WRITE_BIT
// | 0x0004// GL_MAP_INVALIDATE_RANGE_BIT.
// | 0x0008 // GL_MAP_INVALIDATE_BUFFER_BIT
// |0x0020 //GL_MAP_UNSYNCHRONIZED_BIT
|(!gl2wrap_config.coherent?0x0010:0) // GL_MAP_FLUSH_EXPLICIT_BIT
| 0X40
|(gl2wrap_config.coherent?0x80:0) // GL_MAP_COHERENT_BIT
);
}
else
pglBufferDataARB( GL_ARRAY_BUFFER_ARB, size, NULL, GL_STREAM_DRAW_ARB );
}
if( gl2wrap_config.buf_storage )
gl2wrap.attrbuf[i] = gl2wrap.mappings[i][0];
}
int GL2_ShimInit( void )
{
int i;
GLuint total;
static const GLuint precache_progs[] = {
0x0001, // out = ucolor
0x0005, // out = tex0 * ucolor
0x0007, // out = tex0 * vcolor
0x0015, // out = tex0 * ucolor + FEAT_ALPHA_TEST
0x0021, // out = ucolor + FEAT_FOG
0x0025, // out = tex0 * ucolor + FEAT_FOG
0x0027, // out = tex0 * vcolor + FEAT_FOG
0x0035, // out = tex0 * ucolor + FEAT_ALPHA_TEST + FEAT_FOG
};
if ( gl2wrap_init )
return 0;
gl2wrap_config.vao_mandatory = true;
gl2wrap_config.incremental =true;
gl2wrap_config.async = true;
gl2wrap_config.force_flush = false;
gl2wrap_config.buf_storage = true;
gl2wrap_config.coherent = true;
gl2wrap_config.supports_mapbuffer = true;
gl2wrap_config.cycle_buffers = 4096;
gl2wrap_config.version = 310;
if(gl2wrap_config.buf_storage)
gl2wrap_config.incremental = true;
if(gl2wrap_config.incremental && !gl2wrap_config.buf_storage)
gl2wrap_config.async = true;
if(gl2wrap_config.incremental)
gl2wrap_config.cycle_buffers = 4;
if(!gl2wrap_config.vao_mandatory)
gl2wrap_config.cycle_buffers = 1;
memset( &gl2wrap, 0, sizeof( gl2wrap ) );
GL2_ShimInstall();
GL2_InitTriQuads();
gl2wrap.color[0] = 1.f;
gl2wrap.color[1] = 1.f;
gl2wrap.color[2] = 1.f;
gl2wrap.color[3] = 1.f;
gl2wrap.uchanged = GL_TRUE;
total = 0;
for ( i = 0; i < GL2_ATTR_MAX; ++i )
{
GLuint size = GL2_MAX_VERTS * gl2wrap_attr_size[i] * sizeof( GLfloat );
if( !gl2wrap_config.buf_storage )
{
#ifdef XASH_POSIX
gl2wrap.attrbuf[i] = memalign( 0x100, size );
#else
gl2wrap.attrbuf[i] = malloc( size );
#endif
}
if( gl2wrap_config.incremental )
GL2_InitIncrementalBuffer( i, size );
else
{
if(!gl2wrap_config.incremental && gl2wrap_config.vao_mandatory)
{
gl2wrap.attrbufobj[i] = malloc(gl2wrap_config.cycle_buffers * 4);
pglGenBuffersARB( gl2wrap_config.cycle_buffers, gl2wrap.attrbufobj[i] );
if(gl2wrap_config.supports_mapbuffer)
{
for(int j = 0; j < gl2wrap_config.cycle_buffers; j++ )
{
rpglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap.attrbufobj[i][j] );
pglBufferDataARB( GL_ARRAY_BUFFER_ARB, MAX_BEGINEND_VERTS, NULL, GL_STREAM_DRAW_ARB );
}
}
}
}
total += size;
}
if( gl2wrap_config.vao_mandatory )
pglBindVertexArray(0);
rpglBindBufferARB( GL_ARRAY_BUFFER_ARB, 0 );
gEngfuncs.Con_DPrintf( S_NOTE "GL2_ShimInit(): %u bytes allocated for vertex buffer\n", total );
gEngfuncs.Con_DPrintf( S_NOTE "GL2_ShimInit(): Pre-generating %u progs...\n", (uint)(sizeof( precache_progs ) / sizeof( *precache_progs ) ));
for ( i = 0; i < (int)( sizeof( precache_progs ) / sizeof( *precache_progs ) ); ++i )
GL2_GetProg( precache_progs[i] );
gl2wrap_init = 1;
return 0;
}
void GL2_ShimShutdown( void )
{
int i;
if ( !gl2wrap_init )
return;
pglFinish();
pglUseProgramObjectARB( 0 );
/*
// FIXME: this sometimes causes the game to block on glDeleteProgram for up to a minute
// but since this is only called on shutdown or game change, it should be fine to skip
for ( i = 0; i < MAX_PROGS; ++i )
{
if ( gl2wrap.progs[i].flags )
glDeleteProgram( gl2wrap.progs[i].glprog );
}
*/
if( gl2wrap_config.buf_storage )
{
for ( i = 0; i < GL2_ATTR_MAX; ++i )
{
if(gl2wrap_config.buf_storage)
{
/// TODO: cleanup
//pglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap.attrbufpers[i] );
//pglUnmapBufferARB( GL_ARRAY_BUFFER_ARB );
//pglDeleteBuffersARB( 1, &gl2wrap.attrbufpers[i] );
}
else
free( gl2wrap.attrbuf[i] );
}
}
memset( &gl2wrap, 0, sizeof( gl2wrap ) );
gl2wrap_init = 0;
}
static void GL2_ResetPersistentBuffer( void )
{
int i;
#ifdef QUAD_BATCH
GL2_FlushPrims();
#endif
gl2wrap.end = gl2wrap.begin = 0;
if( gl2wrap_config.incremental)
{
gl2wrap.attrbufcycle = (gl2wrap.attrbufcycle + 1) % gl2wrap_config.cycle_buffers;
for ( i = 0; i < GL2_ATTR_MAX; ++i )
{
int size = GL2_MAX_VERTS * gl2wrap_attr_size[i] * sizeof( GLfloat );
rpglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap.attrbufobj[i][gl2wrap.attrbufcycle] );
if(gl2wrap_config.buf_storage)
{
pglUnmapBufferARB(GL_ARRAY_BUFFER_ARB);
gl2wrap.mappings[i][gl2wrap.attrbufcycle] = _pglMapBufferRange(GL_ARRAY_BUFFER_ARB,
0,
size,
0x0002 //GL_MAP_WRITE_BIT
// | 0x0004// GL_MAP_INVALIDATE_RANGE_BIT.
// | 0x0008 // GL_MAP_INVALIDATE_BUFFER_BIT
// |0x0020 //GL_MAP_UNSYNCHRONIZED_BIT
|(!gl2wrap_config.coherent?0x0010:0) // GL_MAP_FLUSH_EXPLICIT_BIT
| 0X40
| (gl2wrap_config.coherent?0x00000080:0) // GL_MAP_COHERENT_BIT
);
gl2wrap.attrbuf[i] = gl2wrap.mappings[i][gl2wrap.attrbufcycle];
}
else
{
void *mem = _pglMapBufferRange(GL_ARRAY_BUFFER_ARB,
0,
size,
0x0002 //GL_MAP_WRITE_BIT
// | 0x0004// GL_MAP_INVALIDATE_RANGE_BIT.
| 0x0008 // GL_MAP_INVALIDATE_BUFFER_BIT
// |0x0020 //GL_MAP_UNSYNCHRONIZED_BIT
// |0x0010 // GL_MAP_FLUSH_EXPLICIT_BIT
//| 0X40
//| 0x00000080 // GL_MAP_COHERENT_BIT
);
(void)mem;
pglUnmapBufferARB(GL_ARRAY_BUFFER_ARB);
}
}
}
}
void GL2_ShimEndFrame( void )
{
#ifdef QUAD_BATCH
GL2_FlushPrims();
#endif
}
static void APIENTRY GL2_Begin( GLenum prim )
{
int i;
if(gl2wrap.begin + MAX_BEGINEND_VERTS > GL2_MAX_VERTS )
GL2_ResetPersistentBuffer();
#ifdef QUAD_BATCH
if( gl2wrap.prim == GL_QUADS && gl2wrap_quad.active )
{
GLuint flags = gl2wrap.cur_flags;
GLuint flags2 = gl2wrap.cur_flags;
if( gl2wrap_quad.flags != flags || prim != GL_QUADS )
{
GL2_FlushPrims();
}
else if( gl2wrap_quad.flags == flags && prim == GL_QUADS )
return;
}
gl2wrap_quad.active = false;
#endif
gl2wrap.prim = prim;
gl2wrap.begin = gl2wrap.end;
// pos always enabled
gl2wrap.cur_flags |= 1 << GL2_ATTR_POS;
}
void (*_pglMemoryBarrier)(GLbitfield barriers);
static void GL2_UpdateIncrementalBuffer( gl2wrap_prog_t *prog, int count )
{
int i;
if(!gl2wrap_config.buf_storage)
{
for( i = 0; i < GL2_ATTR_MAX; i++)
{
if ( prog->attridx[i] >= 0 )
{
void *mem;
rpglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap.attrbufobj[i][gl2wrap.attrbufcycle]);
mem = _pglMapBufferRange(GL_ARRAY_BUFFER_ARB,
gl2wrap_attr_size[i] * 4 * gl2wrap.begin,
gl2wrap_attr_size[i] * 4 * count,
0x0002 //GL_MAP_WRITE_BIT
| 0x0004// GL_MAP_INVALIDATE_RANGE_BIT.
// | 0x0008 // GL_MAP_INVALIDATE_BUFFER_BIT
|(gl2wrap_config.async ? 0x0020:0) //GL_MAP_UNSYNCHRONIZED_BIT
|(gl2wrap_config.force_flush ? 0x0010:0) // GL_MAP_FLUSH_EXPLICIT_BIT
//| 0x00000080 // GL_MAP_COHERENT_BIT
);
memcpy(mem, gl2wrap.attrbuf[i] + gl2wrap_attr_size[i] * gl2wrap.begin, gl2wrap_attr_size[i] * 4 * count);
if( gl2wrap_config.force_flush )
_pglFlushMappedBufferRange( GL_ARRAY_BUFFER_ARB, 0, gl2wrap_attr_size[i] * 4 * count );
pglUnmapBufferARB( GL_ARRAY_BUFFER_ARB);
}
}
}
else if(!gl2wrap_config.coherent)
{
for( i = 0; i < GL2_ATTR_MAX; i++)
{
if ( prog->attridx[i] >= 0 )
{
rpglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap.attrbufobj[i][gl2wrap.attrbufcycle]);
_pglFlushMappedBufferRange( GL_ARRAY_BUFFER_ARB, 0, gl2wrap_attr_size[i] * 4 * count );
}
}
}
}
void GL2_FlushPrims( void )
{
int i;
int startindex = 0;
GLuint flags = gl2wrap.cur_flags;
GLint count = gl2wrap.end - gl2wrap.begin;
gl2wrap_prog_t *prog;
if ( !gl2wrap.prim || !count )
goto _leave; // end without begin
// enable alpha test and fog if needed
if ( gl2wrap_state.alpha_test )
flags |= 1 << GL2_FLAG_ALPHA_TEST;
if ( gl2wrap_state.fog )
flags |= 1 << GL2_FLAG_FOG;
// disable all vertex attrib pointers
if(!gl2wrap_config.vao_mandatory)
{
for ( i = 0; i < GL2_ATTR_MAX; ++i )
pglDisableVertexAttribArrayARB( i );
}
prog = GL2_SetProg( flags );
if ( !prog )
{
gEngfuncs.Host_Error( "GL2_End(): Could not find program for flags 0x%04x!\n", flags );
goto _leave;
}
if( gl2wrap_config.incremental )
{
GL2_UpdateIncrementalBuffer( prog, count );
pglBindVertexArray( prog->vao_begin[gl2wrap.attrbufcycle] );
startindex = gl2wrap.begin;
}
else
{
if(gl2wrap_config.vao_mandatory)
pglBindVertexArray( prog->vao_begin[gl2wrap.attrbufcycle] );
for ( i = 0; i < GL2_ATTR_MAX; ++i )
{
if ( prog->attridx[i] >= 0 )
{
if( (gl2wrap_config.vao_mandatory &&!gl2wrap_config.supports_mapbuffer) || !gl2wrap_config.vao_mandatory )
pglEnableVertexAttribArrayARB( prog->attridx[i] );
if(gl2wrap_config.vao_mandatory)
{
pglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap.attrbufobj[i][gl2wrap.attrbufcycle] );
if(gl2wrap_config.supports_mapbuffer)
{
if( gl2wrap_attr_size[i] * 4 * count > MAX_BEGINEND_VERTS)
{
pglBufferDataARB( GL_ARRAY_BUFFER_ARB, gl2wrap_attr_size[i] * 4 * count, gl2wrap.attrbuf[i] + gl2wrap_attr_size[i] * gl2wrap.begin , GL_STREAM_DRAW_ARB );
pglEnableVertexAttribArrayARB( prog->attridx[i] );
pglVertexAttribPointerARB( prog->attridx[i], gl2wrap_attr_size[i], GL_FLOAT, GL_FALSE, 0, 0 );
}
else
{
void *mem = _pglMapBufferRange(GL_ARRAY_BUFFER_ARB,
0,
gl2wrap_attr_size[i] * 4 * count,
0x0002 //GL_MAP_WRITE_BIT
| 0x0004// GL_MAP_INVALIDATE_RANGE_BIT.
| 0x0008 // GL_MAP_INVALIDATE_BUFFER_BIT
|(gl2wrap_config.async ? 0x0020:0) //GL_MAP_UNSYNCHRONIZED_BIT
|(gl2wrap_config.force_flush ? 0x0010:0) // GL_MAP_FLUSH_EXPLICIT_BIT
//| 0x00000080 // GL_MAP_COHERENT_BIT
);
memcpy( mem, gl2wrap.attrbuf[i] + gl2wrap_attr_size[i] * gl2wrap.begin, gl2wrap_attr_size[i] * 4 * count);
pglUnmapBufferARB( GL_ARRAY_BUFFER_ARB);
}
}
else
pglBufferDataARB( GL_ARRAY_BUFFER_ARB, gl2wrap_attr_size[i] * 4 * count, gl2wrap.attrbuf[i] + gl2wrap_attr_size[i] * gl2wrap.begin , GL_STREAM_DRAW_ARB );
if(gl2wrap_config.vao_mandatory &&!gl2wrap_config.supports_mapbuffer)
pglVertexAttribPointerARB( prog->attridx[i], gl2wrap_attr_size[i], GL_FLOAT, GL_FALSE, 0, 0 );
}
else // if vao is not mandatory, try use client pointers here
pglVertexAttribPointerARB( prog->attridx[i], gl2wrap_attr_size[i], GL_FLOAT, GL_FALSE, 0, gl2wrap.attrbuf[i] + gl2wrap_attr_size[i] * gl2wrap.begin );
}
}
gl2wrap.attrbufcycle = (gl2wrap.attrbufcycle + 1) % gl2wrap_config.cycle_buffers;
}
if(gl2wrap.prim == GL_QUADS)
{
if(count == 4)
rpglDrawArrays( GL_TRIANGLE_FAN, startindex, count );
else if(_pglDrawRangeElementsBaseVertex)
{
pglBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, gl2wrap.triquads_ibo[0] );
_pglDrawRangeElementsBaseVertex( GL_TRIANGLES, startindex, startindex + count, Q_min(count / 4 * 6,TRIQUADS_SIZE * 6 - startindex), GL_UNSIGNED_SHORT, (void*)(size_t)(startindex / 4 * 6 * 2), startindex % 4 );
pglBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
}
else if(rpglDrawRangeElements)
{
pglBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, gl2wrap.triquads_ibo[startindex % 4] );
rpglDrawRangeElements( GL_TRIANGLES, startindex, startindex + count, Q_min(count / 4 * 6,TRIQUADS_SIZE * 6 - startindex), GL_UNSIGNED_SHORT, (void*)(size_t)(startindex / 4 * 6 * 2) );
pglBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 );
}
else
{
pglBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, gl2wrap.triquads_ibo[startindex % 4] );
rpglDrawElements( GL_TRIANGLES, Q_min(count / 4 * 6,TRIQUADS_SIZE * 6 - startindex), GL_UNSIGNED_SHORT, (void*)(size_t)(startindex / 4 * 6 * 2) );
pglBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 );
}
}
else if( gl2wrap.prim == GL_POLYGON )
rpglDrawArrays( GL_TRIANGLE_FAN, startindex, count );
else
rpglDrawArrays( gl2wrap.prim, startindex, count );
_leave:
if(gl2wrap_config.vao_mandatory)
pglBindVertexArray(0);
pglBindBufferARB( GL_ARRAY_BUFFER_ARB, 0 );
gl2wrap.prim = GL_NONE;
gl2wrap.begin = gl2wrap.end;
gl2wrap.cur_flags = 0;
#ifdef QUAD_BATCH
gl2wrap_quad.active = 0;
#endif
}
static void APIENTRY GL2_End( void )
{
int i;
#ifdef QUAD_BATCH
if( gl2wrap.prim == GL_QUADS )
{
GLuint flags = gl2wrap.cur_flags;
// enable alpha test and fog if needed
/*if ( alpha_test_state )
flags |= 1 << GL2_FLAG_ALPHA_TEST;
if ( fogging )
flags |= 1 << GL2_FLAG_FOG;*/
gl2wrap_quad.flags = flags;
gl2wrap_quad.active = 1;
return;
}
#endif
GL2_FlushPrims();
}
static void (APIENTRY* rpglTexImage2D)( GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels );
static void APIENTRY GL2_TexImage2D( GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels )
{
void *data = (void*)pixels;
if( pixels && format == GL_RGBA && (
internalformat == GL_RGB ||
internalformat == GL_RGB8 ||
internalformat == GL_RGB5 ||
internalformat == GL_LUMINANCE ||
internalformat == GL_LUMINANCE8 ||
internalformat == GL_LUMINANCE4 )) // strip alpha from texture
{
unsigned char *in = data, *out;
int i = 0, size = width * height * 4;
data = out = (unsigned char*)malloc( size );
for( i = 0; i < size; i += 4, in += 4, out += 4 )
{
memcpy( out, in, 3 );
out[3] = 255;
}
internalformat = format;
}
if( internalformat == GL_LUMINANCE8_ALPHA8 || internalformat == GL_RGB )
internalformat = GL_RGBA;
rpglTexImage2D( target, level, internalformat, width, height, border, format, type, data );
if( data != pixels )
free(data);
}
static void (APIENTRY* rpglTexParameteri)( GLenum target, GLenum pname, GLint param );
static void APIENTRY GL2_TexParameteri( GLenum target, GLenum pname, GLint param )
{
if ( pname == GL_TEXTURE_BORDER_COLOR )
{
return; // not supported by opengl es
}
if ( ( pname == GL_TEXTURE_WRAP_S ||
pname == GL_TEXTURE_WRAP_T ) &&
param == GL_CLAMP )
{
param = 0x812F;
}
rpglTexParameteri( target, pname, param );
}
GLboolean (APIENTRY* rpglIsEnabled)(GLenum e);
static GLboolean APIENTRY GL2_IsEnabled(GLenum e)
{
if(e == GL_FOG)
return gl2wrap_state.fog;
return rpglIsEnabled(e);
}
static void APIENTRY GL2_Vertex3f( GLfloat x, GLfloat y, GLfloat z )
{
GLfloat *p = gl2wrap.attrbuf[GL2_ATTR_POS] + gl2wrap.end * 3;
*p++ = x;
*p++ = y;
*p++ = z;
++gl2wrap.end;
if(gl2wrap.cur_flags & 1 << GL2_ATTR_COLOR)
{
GLfloat *p = gl2wrap.attrbuf[GL2_ATTR_COLOR] + gl2wrap.end * 4;
gl2wrap.cur_flags |= 1 << GL2_ATTR_COLOR;
*p++ = gl2wrap.color[0];
*p++ = gl2wrap.color[1];
*p++ = gl2wrap.color[2];
*p++ = gl2wrap.color[3];
}
if ( gl2wrap.end - gl2wrap.begin >= MAX_BEGINEND_VERTS )
{
GLenum prim = gl2wrap.prim;
gEngfuncs.Con_DPrintf( S_ERROR "GL2_Vertex3f(): Vertex buffer overflow!\n" );
GL2_FlushPrims();
GL2_Begin( prim );
}
}
static void APIENTRY GL2_Vertex2f( GLfloat x, GLfloat y )
{
GL2_Vertex3f( x, y, 0.f );
}
static void APIENTRY GL2_Vertex3fv( const GLfloat *v )
{
GL2_Vertex3f( v[0], v[1], v[2] );
}
static void APIENTRY GL2_Color4f( GLfloat r, GLfloat g, GLfloat b, GLfloat a )
{
#ifdef QUAD_BATCH
if(gl2wrap_quad.active)
{
if( !(gl2wrap.color[0] == r && gl2wrap.color[1] == g && gl2wrap.color[2] == b && gl2wrap.color[3] == a) )
GL2_FlushPrims();
}
#endif
gl2wrap.color[0] = r;
gl2wrap.color[1] = g;
gl2wrap.color[2] = b;
gl2wrap.color[3] = a;
gl2wrap.uchanged = GL_TRUE;
#ifdef QUAD_BATCH
if(gl2wrap_quad.active)
return;
#endif
if ( gl2wrap.prim )
{
// HACK: enable color attribute if we're using color inside a Begin-End pair
GLfloat *p = gl2wrap.attrbuf[GL2_ATTR_COLOR] + gl2wrap.end * 4;
gl2wrap.cur_flags |= 1 << GL2_ATTR_COLOR;
*p++ = r;
*p++ = g;
*p++ = b;
*p++ = a;
}
}
static void APIENTRY GL2_Color3f( GLfloat r, GLfloat g, GLfloat b )
{
GL2_Color4f( r, g, b, 1.f );
}
static void APIENTRY GL2_Color4ub( GLubyte r, GLubyte g, GLubyte b, GLubyte a )
{
GL2_Color4f( (GLfloat)r / 255.f, (GLfloat)g / 255.f, (GLfloat)b / 255.f, (GLfloat)a / 255.f );
}
static void APIENTRY GL2_Color4ubv( const GLubyte *v )
{
GL2_Color4ub( v[0], v[1], v[2], v[3] );
}
static void APIENTRY GL2_TexCoord2f( GLfloat u, GLfloat v )
{
// by spec glTexCoord always updates texunit 0
GLfloat *p = gl2wrap.attrbuf[GL2_ATTR_TEXCOORD0] + gl2wrap.end * 2;
gl2wrap.cur_flags |= 1 << GL2_ATTR_TEXCOORD0;
*p++ = u;
*p++ = v;
}
static void APIENTRY GL2_MultiTexCoord2f( GLenum tex, GLfloat u, GLfloat v )
{
GLfloat *p;
// assume there can only be two
if ( tex == GL_TEXTURE0_ARB )
{
p = gl2wrap.attrbuf[GL2_ATTR_TEXCOORD0] + gl2wrap.end * 2;
gl2wrap.cur_flags |= 1 << GL2_ATTR_TEXCOORD0;
}
else
{
p = gl2wrap.attrbuf[GL2_ATTR_TEXCOORD1] + gl2wrap.end * 2;
gl2wrap.cur_flags |= 1 << GL2_ATTR_TEXCOORD1;
}
*p++ = u;
*p++ = v;
}
static void APIENTRY GL2_AlphaFunc( GLenum mode, GLfloat ref )
{
gl2wrap.alpharef = ref;
gl2wrap.uchanged = GL_TRUE;
// mode is always GL_GREATER
}
static void APIENTRY GL2_Fogf( GLenum param, GLfloat val )
{
if ( param == GL_FOG_DENSITY )
{
gl2wrap.fog[3] = val;
gl2wrap.uchanged = GL_TRUE;
}
}
static void APIENTRY GL2_Fogfv( GLenum param, const GLfloat *val )
{
if ( param == GL_FOG_COLOR )
{
gl2wrap.fog[0] = val[0];
gl2wrap.fog[1] = val[1];
gl2wrap.fog[2] = val[2];
gl2wrap.uchanged = GL_TRUE;
}
}
static qboolean GL2_SkipEnable( GLenum e )
{
return e == GL_TEXTURE_2D || e == GL_TEXTURE_1D;
}
static qboolean GL2_CatchEnable( GLenum e, qboolean enable )
{
if( e == GL_FOG )
gl2wrap_state.fog = enable;
else if( e == GL_ALPHA_TEST )
gl2wrap_state.alpha_test = enable;
else return false;
return true;
}
static void APIENTRY GL2_Enable( GLenum e )
{
if( GL2_SkipEnable(e) )
{}
else if(!GL2_CatchEnable(e, true))
rpglEnable(e);
}
static void APIENTRY GL2_Disable( GLenum e )
{
if( GL2_SkipEnable(e) )
{}
else if(!GL2_CatchEnable(e, false))
rpglDisable(e);
}
static void APIENTRY GL2_MatrixMode( GLenum m )
{
// if(gl2wrap_matrix.mode == m)
// return;
#ifdef QUAD_BATCH
GL2_FlushPrims();
#endif
gl2wrap_matrix.mode = m;
switch( m )
{
case GL_MODELVIEW:
gl2wrap_matrix.current = gl2wrap_matrix.mv;
break;
case GL_PROJECTION:
gl2wrap_matrix.current = gl2wrap_matrix.pr;
break;
default:
gl2wrap_matrix.current = gl2wrap_matrix.dummy;
break;
}
}
static void APIENTRY GL2_LoadIdentity( void )
{
float *m = (float*)gl2wrap_matrix.current;
m[1] = m[2] = m[3] = m[4] = 0.0f;
m[6] = m[7] = m[8] = m[9] = 0.0f;
m[11] = m[12] = m[13] = m[14] = 0.0f;
m[0] = m[5] = m[10] = m[15] = 1.0f;
gl2wrap_matrix.update = 0xFFFFFFFFFFFFFFFF;
}
static void APIENTRY GL2_Ortho(double l, double r, double b, double t, double n, double f)
{
GLfloat m0 = 2 / (r - l);
GLfloat m5 = 2 / (t - b);
GLfloat m10 = - 2 / (f - n);
GLfloat m12 = - (r + l) / (r - l);
GLfloat m13 = - (t + b) / (t - b);
GLfloat m14 = - (f + n) / (f - n);
float *m = gl2wrap_matrix.current;
m[12] += m12 * m[0] + m13 * m[4] + m14 * m[8];
m[13] += m12 * m[1] + m13 * m[5] + m14 * m[9];
m[14] += m12 * m[2] + m13 * m[6] + m14 * m[10];
m[15] += m12 * m[3] + m13 * m[7] + m14 * m[11];
m[0] *= m0;
m[1] *= m0;
m[2] *= m0;
m[3] *= m0;
m[4] *= m5;
m[5] *= m5;
m[6] *= m5;
m[7] *= m5;
m[8] *= m10;
m[9] *= m10;
m[10] *= m10;
m[11] *= m10;
gl2wrap_matrix.update = 0xFFFFFFFFFFFFFFFF;
}
static void GL2_Mul4x4(const GLfloat *in0, const GLfloat *in1, GLfloat *out)
{
out[0] = in0[0] * in1[0] + in0[1] * in1[4] + in0[2] * in1[8] + in0[3] * in1[12];
out[1] = in0[0] * in1[1] + in0[1] * in1[5] + in0[2] * in1[9] + in0[3] * in1[13];
out[2] = in0[0] * in1[2] + in0[1] * in1[6] + in0[2] * in1[10] + in0[3] * in1[14];
out[3] = in0[0] * in1[3] + in0[1] * in1[7] + in0[2] * in1[11] + in0[3] * in1[15];
out[4] = in0[4] * in1[0] + in0[5] * in1[4] + in0[6] * in1[8] + in0[7] * in1[12];
out[5] = in0[4] * in1[1] + in0[5] * in1[5] + in0[6] * in1[9] + in0[7] * in1[13];
out[6] = in0[4] * in1[2] + in0[5] * in1[6] + in0[6] * in1[10] + in0[7] * in1[14];
out[7] = in0[4] * in1[3] + in0[5] * in1[7] + in0[6] * in1[11] + in0[7] * in1[15];
out[8] = in0[8] * in1[0] + in0[9] * in1[4] + in0[10] * in1[8] + in0[11] * in1[12];
out[9] = in0[8] * in1[1] + in0[9] * in1[5] + in0[10] * in1[9] + in0[11] * in1[13];
out[10] = in0[8] * in1[2] + in0[9] * in1[6] + in0[10] * in1[10] + in0[11] * in1[14];
out[11] = in0[8] * in1[3] + in0[9] * in1[7] + in0[10] * in1[11] + in0[11] * in1[15];
out[12] = in0[12] * in1[0] + in0[13] * in1[4] + in0[14] * in1[8] + in0[15] * in1[12];
out[13] = in0[12] * in1[1] + in0[13] * in1[5] + in0[14] * in1[9] + in0[15] * in1[13];
out[14] = in0[12] * in1[2] + in0[13] * in1[6] + in0[14] * in1[10] + in0[15] * in1[14];
out[15] = in0[12] * in1[3] + in0[13] * in1[7] + in0[14] * in1[11] + in0[15] * in1[15];
}
static void GL2_UpdateMVP( gl2wrap_prog_t *prog )
{
if( gl2wrap_matrix.update & ( 1U << prog->flags ) )
{
gl2wrap_matrix.update &= ~( 1U << prog->flags );
GL2_Mul4x4( gl2wrap_matrix.mv, gl2wrap_matrix.pr, gl2wrap_matrix.mvp );
pglUniformMatrix4fvARB( prog->uMVP, 1, false, (void*)gl2wrap_matrix.mvp );
}
}
static void APIENTRY GL2_LoadMatrixf( const GLfloat *m )
{
memcpy( gl2wrap_matrix.current, m, 16 * sizeof(float) );
gl2wrap_matrix.update = 0xFFFFFFFFFFFFFFFF;
}
static void ( APIENTRY*_pglDepthRangef)(GLfloat far, GLfloat near);
static void APIENTRY GL2_DepthRange(GLdouble far, GLdouble near)
{
_pglDepthRangef(far, near);
}
typedef struct gl2wrap_arraypointer_s
{
const void *userptr;
GLint size;
GLenum type;
GLsizei stride;
GLuint vbo, *vbo_fb, vbo_cycle;
} gl2wrap_arraypointer_t;
static struct
{
gl2wrap_arraypointer_t ptr[GL2_ATTR_MAX];
unsigned int flags;
//unsigned int vbo_flags;
GLuint stream_buffer;
void *stream_pointer;
size_t stream_counter;
GLuint vao_dynamic;
} gl2wrap_arrays;
static void GL2_SetPointer( int idx, GLint size, GLenum type, GLsizei stride, const GLvoid *pointer )
{
gl2wrap_arrays.ptr[idx].size = size;
gl2wrap_arrays.ptr[idx].type = type;
gl2wrap_arrays.ptr[idx].stride = stride;
gl2wrap_arrays.ptr[idx].userptr = pointer;
gl2wrap_arrays.ptr[idx].vbo = gl2wrap_state.vbo;
// if(vbo)
// gl2wrap_arrays.vbo_flags |= 1 << idx;
// else
// gl2wrap_arrays.vbo_flags &= ~(1 << idx);
}
static void APIENTRY GL2_VertexPointer( GLint size, GLenum type, GLsizei stride, const GLvoid *pointer )
{
GL2_SetPointer( GL2_ATTR_POS, size, type, stride, pointer );
}
static void APIENTRY GL2_ColorPointer( GLint size, GLenum type, GLsizei stride, const GLvoid *pointer )
{
GL2_SetPointer( GL2_ATTR_COLOR, size, type, stride, pointer );
}
static void APIENTRY GL2_TexCoordPointer( GLint size, GLenum type, GLsizei stride, const GLvoid *pointer )
{
GL2_SetPointer( GL2_ATTR_TEXCOORD0 + gl2wrap_state.tmu, size, type, stride, pointer );
}
static unsigned int GL2_GetArrIdx( GLenum array )
{
switch (array) {
case GL_VERTEX_ARRAY:
return GL2_ATTR_POS;
case GL_COLOR_ARRAY:
return GL2_ATTR_COLOR;
case GL_TEXTURE_COORD_ARRAY:
ASSERT(gl2wrap_state.tmu < 2);
return GL2_ATTR_TEXCOORD0 + gl2wrap_state.tmu;
default:
return 0;
}
}
static void APIENTRY GL2_EnableClientState( GLenum array )
{
int idx = GL2_GetArrIdx(array);
gl2wrap_arrays.flags |= 1 << idx;
}
static void APIENTRY GL2_DisableClientState( GLenum array )
{
unsigned int idx = GL2_GetArrIdx(array);
gl2wrap_arrays.flags &= ~(1 << idx);
}
static void GL2_SetupArrays( GLuint start, GLuint end )
{
gl2wrap_prog_t *prog;
unsigned int flags = gl2wrap_arrays.flags;
if(!flags)
return; // Legacy pointers not used
#ifdef QUAD_BATCH
GL2_FlushPrims();
#endif
if ( gl2wrap_state.alpha_test )
flags |= 1 << GL2_FLAG_ALPHA_TEST;
if ( gl2wrap_state.fog )
flags |= 1 << GL2_FLAG_FOG;
prog = GL2_SetProg( flags );// | GL2_ATTR_TEXCOORD0 );
if( !prog )
return;
if( gl2wrap_config.vao_mandatory )
{
if( !gl2wrap_arrays.vao_dynamic )
pglGenVertexArrays( 1, &gl2wrap_arrays.vao_dynamic );
pglBindVertexArray( gl2wrap_arrays.vao_dynamic );
}
for( int i = 0; i < GL2_ATTR_MAX; i++ )
{
if(prog->attridx[i] < 0)
continue;
if( flags & (1 << i) )
{
pglEnableVertexAttribArrayARB( prog->attridx[i] );
if( gl2wrap_config.vao_mandatory && !gl2wrap_arrays.ptr[i].vbo )
{
// detect stride by type
int stride = gl2wrap_arrays.ptr[i].stride;
int size;
int offset;
if( stride == 0 )
{
if( gl2wrap_arrays.ptr[i].type == GL_UNSIGNED_BYTE )
stride = gl2wrap_arrays.ptr[i].size;
else
stride = gl2wrap_arrays.ptr[i].size * 4;
}
if( gl2wrap_config.buf_storage && !gl2wrap_arrays.stream_pointer )
{
pglGenBuffersARB( 1, &gl2wrap_arrays.stream_buffer );
rpglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap_arrays.stream_buffer );
_pglBufferStorage( GL_ARRAY_BUFFER_ARB, GL2_MAX_VERTS * 64, NULL,
0x0002 //GL_MAP_WRITE_BIT
| (gl2wrap_config.coherent?0x00000080:0)
| 0x40
);
gl2wrap_arrays.stream_pointer = _pglMapBufferRange(GL_ARRAY_BUFFER_ARB,
0,
GL2_MAX_VERTS * 64,
0x0002 //GL_MAP_WRITE_BIT
// | 0x0004// GL_MAP_INVALIDATE_RANGE_BIT.
// | 0x0008 // GL_MAP_INVALIDATE_BUFFER_BIT
// |0x0020 //GL_MAP_UNSYNCHRONIZED_BIT
// |0x0010 // GL_MAP_FLUSH_EXPLICIT_BIT
| (!gl2wrap_config.coherent?0x0010:0)
| 0X40
| (gl2wrap_config.coherent?0x00000080:0) // GL_MAP_COHERENT_BIT
);
}
else if(!gl2wrap_config.buf_storage && gl2wrap_config.incremental && !gl2wrap_arrays.stream_buffer)
{
pglGenBuffersARB( 1, &gl2wrap_arrays.stream_buffer );
rpglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap_arrays.stream_buffer );
pglBufferDataARB( GL_ARRAY_BUFFER_ARB, GL2_MAX_VERTS * 64, NULL, GL_STREAM_DRAW_ARB );
}
else
{
rpglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap_arrays.stream_buffer );
}
if(!end)
{
pglDisableVertexAttribArrayARB( prog->attridx[i] );
gEngfuncs.Con_Printf(S_ERROR "NON-vbo array for DrawElements call, SKIPPING!\n");
continue;
}
size = (end - start) * stride;
offset = start * stride;
if( gl2wrap_arrays.stream_counter < offset )
size = end * stride, offset = 0;
if( (!gl2wrap_config.buf_storage && !gl2wrap_config.incremental) || size > GL2_MAX_VERTS * 32) /// TODO: support incremental for !buf_storage
{
if( !gl2wrap_arrays.ptr[i].vbo_fb )
{
gl2wrap_arrays.ptr[i].vbo_fb = malloc(4 * gl2wrap_config.cycle_buffers);
pglGenBuffersARB( gl2wrap_config.cycle_buffers, gl2wrap_arrays.ptr[i].vbo_fb );
}
rpglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap_arrays.ptr[i].vbo_fb[gl2wrap_arrays.ptr[i].vbo_cycle] );
gl2wrap_arrays.ptr[i].vbo_cycle = (gl2wrap_arrays.ptr[i].vbo_cycle + 1) % gl2wrap_config.cycle_buffers;
pglBufferDataARB( GL_ARRAY_BUFFER_ARB, end * stride, gl2wrap_arrays.ptr[i].userptr, GL_STREAM_DRAW_ARB );
pglVertexAttribPointerARB( prog->attridx[i], gl2wrap_arrays.ptr[i].size, gl2wrap_arrays.ptr[i].type, i == GL2_ATTR_COLOR, gl2wrap_arrays.ptr[i].stride, 0 );
continue;
}
if(!gl2wrap_config.buf_storage && gl2wrap_config.incremental)
{
void *mem;
qboolean inv = false;
if(gl2wrap_arrays.stream_counter + size > GL2_MAX_VERTS * 64)
size = end * stride, offset = 0, gl2wrap_arrays.stream_counter = 0, inv = true;
mem = _pglMapBufferRange(GL_ARRAY_BUFFER_ARB,
gl2wrap_arrays.stream_counter,
size,
0x0002 //GL_MAP_WRITE_BIT
| 0x0004// GL_MAP_INVALIDATE_RANGE_BIT.
| (inv?0x0008:0) // GL_MAP_INVALIDATE_BUFFER_BIT
|(gl2wrap_config.async ? 0x0020:0) //GL_MAP_UNSYNCHRONIZED_BIT
|(gl2wrap_config.force_flush ? 0x0010:0) // GL_MAP_FLUSH_EXPLICIT_BIT
// GL_MAP_COHERENT_BIT
);
memcpy(mem, ((char*)gl2wrap_arrays.ptr[i].userptr) + offset, size);
if(gl2wrap_config.force_flush)
_pglFlushMappedBufferRange(GL_ARRAY_BUFFER_ARB, 0, size);
pglUnmapBufferARB(GL_ARRAY_BUFFER_ARB);
pglVertexAttribPointerARB( prog->attridx[i], gl2wrap_arrays.ptr[i].size, gl2wrap_arrays.ptr[i].type, i == GL2_ATTR_COLOR, gl2wrap_arrays.ptr[i].stride, (void*)(gl2wrap_arrays.stream_counter - offset) );
gl2wrap_arrays.stream_counter += size;
continue;
}
if(gl2wrap_arrays.stream_counter + size > GL2_MAX_VERTS * 64)
{
pglUnmapBufferARB(GL_ARRAY_BUFFER_ARB);
gl2wrap_arrays.stream_counter = 0;
gl2wrap_arrays.stream_pointer = _pglMapBufferRange(GL_ARRAY_BUFFER_ARB,
0,
GL2_MAX_VERTS * 64,
0x0002 //GL_MAP_WRITE_BIT
// | 0x0004// GL_MAP_INVALIDATE_RANGE_BIT.
// | 0x0008 // GL_MAP_INVALIDATE_BUFFER_BIT
// |0x0020 //GL_MAP_UNSYNCHRONIZED_BIT
|(!gl2wrap_config.coherent?0x0010:0) // GL_MAP_FLUSH_EXPLICIT_BIT
| 0X40
| (gl2wrap_config.coherent?0x00000080:0) // GL_MAP_COHERENT_BIT
);
//i = -1;
//continue;
size = end * stride, offset = 0;
}
memcpy(((char*)gl2wrap_arrays.stream_pointer) + gl2wrap_arrays.stream_counter, ((char*)gl2wrap_arrays.ptr[i].userptr) + offset, size);
if( !gl2wrap_config.coherent )
_pglFlushMappedBufferRange( GL_ARRAY_BUFFER_ARB, gl2wrap_arrays.stream_counter, size );
pglVertexAttribPointerARB( prog->attridx[i], gl2wrap_arrays.ptr[i].size, gl2wrap_arrays.ptr[i].type, i == GL2_ATTR_COLOR, gl2wrap_arrays.ptr[i].stride, (void*)(gl2wrap_arrays.stream_counter - offset) );
gl2wrap_arrays.stream_counter += size;
}
else
{
rpglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap_arrays.ptr[i].vbo );
pglVertexAttribPointerARB( prog->attridx[i], gl2wrap_arrays.ptr[i].size, gl2wrap_arrays.ptr[i].type, i == GL2_ATTR_COLOR, gl2wrap_arrays.ptr[i].stride, gl2wrap_arrays.ptr[i].userptr );
}
/*
if(i == GL2_ATTR_TEXCOORD0)
pglUniform1iARB( prog->utex0, 0 );
if(i == GL2_ATTR_TEXCOORD1)
pglUniform1iARB( prog->utex1, 1 );
*/
}
else
{
pglDisableVertexAttribArrayARB( prog->attridx[i] );
}
}
rpglBindBufferARB( GL_ARRAY_BUFFER_ARB, gl2wrap_state.vbo );
}
static void APIENTRY GL2_DrawElements( GLenum mode, GLsizei count, GLenum type, const GLvoid *indices )
{
GL2_SetupArrays( 0, 0 );
rpglDrawElements( mode, count, type, indices );
}
static void APIENTRY GL2_DrawRangeElements( GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices )
{
GL2_SetupArrays( start, end );
if(rpglDrawRangeElements)
rpglDrawRangeElements( mode, start, end, count, type, indices );
else
rpglDrawElements( mode, count, type, indices );
}
static void APIENTRY GL2_DrawArrays( GLenum mode, GLint first, GLsizei count )
{
GL2_SetupArrays( 0, count );
rpglDrawArrays( mode, first, count );
}
static void APIENTRY GL2_BindBufferARB( GLenum buf, GLuint obj)
{
if( buf == GL_ARRAY_BUFFER_ARB )
gl2wrap_state.vbo = obj;
rpglBindBufferARB( buf, obj );
}
static void APIENTRY GL2_ActiveTextureARB( GLenum tex )
{
//gl2wrap_arrays.texture = GL_TEXTURE0_ARB - tex;
}
static void APIENTRY GL2_ClientActiveTextureARB( GLenum tex )
{
gl2wrap_state.tmu = tex - GL_TEXTURE0_ARB;
//pglActiveTextureARB(tex);
}
#define GL2_OVERRIDE_PTR( name ) \
{ \
pgl ## name = GL2_ ## name; \
}
#define GL2_OVERRIDE_PTR_B( name ) \
{ \
rpgl ## name = pgl ## name; \
pgl ## name = GL2_ ## name; \
}
static void APIENTRY stub( void ){}
#define GL2_STUB( name ) \
{ \
*((void**)&pgl ## name) = (void*)stub; \
}
void GL2_ShimInstall( void )
{
GL2_OVERRIDE_PTR( Vertex2f )
GL2_OVERRIDE_PTR( Vertex3f )
GL2_OVERRIDE_PTR( Vertex3fv )
GL2_OVERRIDE_PTR( Color3f )
GL2_OVERRIDE_PTR( Color4f )
GL2_OVERRIDE_PTR( Color4ub )
GL2_OVERRIDE_PTR( Color4ubv )
GL2_STUB( Normal3fv )
GL2_OVERRIDE_PTR( TexCoord2f )
GL2_OVERRIDE_PTR( MultiTexCoord2f )
GL2_OVERRIDE_PTR( AlphaFunc )
GL2_OVERRIDE_PTR( Fogf )
GL2_OVERRIDE_PTR( Fogfv )
GL2_STUB( Hint ) // fog
GL2_OVERRIDE_PTR( Begin )
GL2_OVERRIDE_PTR( End )
GL2_OVERRIDE_PTR_B( Enable )
GL2_OVERRIDE_PTR_B( Disable )
GL2_OVERRIDE_PTR( MatrixMode )
GL2_OVERRIDE_PTR( LoadIdentity )
GL2_OVERRIDE_PTR( Ortho )
GL2_OVERRIDE_PTR( LoadMatrixf )
GL2_STUB( Scalef )
GL2_STUB( Translatef )
GL2_STUB( TexEnvi )
GL2_STUB( TexEnvf )
GL2_OVERRIDE_PTR( ClientActiveTextureARB )
//GL2_OVERRIDE_PTR( ActiveTextureARB )
GL2_STUB( Fogi )
GL2_STUB( ShadeModel )
#ifdef XASH_GLES
_pglDepthRangef = gEngfuncs.GL_GetProcAddress("glDepthRangef");
GL2_STUB( PolygonMode )
GL2_STUB( PointSize )
GL2_OVERRIDE_PTR( DepthRange )
GL2_STUB( DrawBuffer )
#endif
if( glConfig.context != CONTEXT_TYPE_GL )
{
GL2_OVERRIDE_PTR_B( TexImage2D )
GL2_OVERRIDE_PTR_B( TexParameteri )
}
GL2_OVERRIDE_PTR_B( IsEnabled )
GL2_OVERRIDE_PTR_B( DrawRangeElements )
GL2_OVERRIDE_PTR_B( DrawElements )
GL2_OVERRIDE_PTR_B( DrawArrays )
GL2_OVERRIDE_PTR_B( BindBufferARB )
GL2_OVERRIDE_PTR( EnableClientState )
GL2_OVERRIDE_PTR( DisableClientState )
GL2_OVERRIDE_PTR( VertexPointer )
GL2_OVERRIDE_PTR( ColorPointer )
GL2_OVERRIDE_PTR( TexCoordPointer )
_pglMapBufferRange = gEngfuncs.GL_GetProcAddress("glMapBufferRange");
pglUnmapBufferARB = gEngfuncs.GL_GetProcAddress("glUnmapBuffer");
_pglFlushMappedBufferRange = gEngfuncs.GL_GetProcAddress("glFlushMappedBufferRange");
_pglBufferStorage = gEngfuncs.GL_GetProcAddress("glBufferStorage");
_pglMemoryBarrier = gEngfuncs.GL_GetProcAddress("glMemoryBarrier");
_pglFenceSync = gEngfuncs.GL_GetProcAddress("glFenceSync");
_pglWaitSync = gEngfuncs.GL_GetProcAddress("glWaitSync");
_pglClientWaitSync = gEngfuncs.GL_GetProcAddress("glClientWaitSync");
_pglDeleteSync = gEngfuncs.GL_GetProcAddress("glDeleteSync");
_pglDrawRangeElementsBaseVertex = gEngfuncs.GL_GetProcAddress("glDrawRangeElementsBaseVertex");
#ifdef QUAD_BATCH
GL2_OVERRIDE_PTR_B( BindTexture )
#endif
}
#endif