/
tr_backend.c
1662 lines (1396 loc) · 39.8 KB
/
tr_backend.c
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/*
* Wolfenstein: Enemy Territory GPL Source Code
* Copyright (C) 1999-2010 id Software LLC, a ZeniMax Media company.
*
* ET: Legacy
* Copyright (C) 2012 Jan Simek <mail@etlegacy.com>
*
* This file is part of ET: Legacy - http://www.etlegacy.com
*
* ET: Legacy 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.
*
* ET: Legacy 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 ET: Legacy. If not, see <http://www.gnu.org/licenses/>.
*
* In addition, Wolfenstein: Enemy Territory GPL Source Code is also
* subject to certain additional terms. You should have received a copy
* of these additional terms immediately following the terms and conditions
* of the GNU General Public License which accompanied the source code.
* If not, please request a copy in writing from id Software at the address below.
*
* id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
*
* @file tr_backend.c
*/
#include "tr_local.h"
backEndData_t *backEndData[SMP_FRAMES];
backEndState_t backEnd;
static float s_flipMatrix[16] =
{
// convert from our coordinate system (looking down X)
// to OpenGL's coordinate system (looking down -Z)
0, 0, -1, 0,
-1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 0, 1
};
/*
** GL_Bind
*/
void GL_Bind(image_t *image)
{
int texnum;
if (!image)
{
ri.Printf(PRINT_WARNING, "GL_Bind: NULL image\n");
texnum = tr.defaultImage->texnum;
}
else
{
texnum = image->texnum;
}
if (r_nobind->integer && tr.dlightImage) // performance evaluation option
{
texnum = tr.dlightImage->texnum;
}
if (glState.currenttextures[glState.currenttmu] != texnum)
{
image->frameUsed = tr.frameCount;
glState.currenttextures[glState.currenttmu] = texnum;
qglBindTexture(GL_TEXTURE_2D, texnum);
}
}
/*
** GL_SelectTexture
*/
void GL_SelectTexture(int unit)
{
if (glState.currenttmu == unit)
{
return;
}
if (unit == 0)
{
qglActiveTextureARB(GL_TEXTURE0_ARB);
GLimp_LogComment("glActiveTextureARB( GL_TEXTURE0_ARB )\n");
qglClientActiveTextureARB(GL_TEXTURE0_ARB);
GLimp_LogComment("glClientActiveTextureARB( GL_TEXTURE0_ARB )\n");
}
else if (unit == 1)
{
qglActiveTextureARB(GL_TEXTURE1_ARB);
GLimp_LogComment("glActiveTextureARB( GL_TEXTURE1_ARB )\n");
qglClientActiveTextureARB(GL_TEXTURE1_ARB);
GLimp_LogComment("glClientActiveTextureARB( GL_TEXTURE1_ARB )\n");
}
else
{
ri.Error(ERR_DROP, "GL_SelectTexture: unit = %i", unit);
}
glState.currenttmu = unit;
}
/*
** GL_BindMultitexture
*/
void GL_BindMultitexture(image_t *image0, GLuint env0, image_t *image1, GLuint env1)
{
int texnum0, texnum1;
texnum0 = image0->texnum;
texnum1 = image1->texnum;
if (r_nobind->integer && tr.dlightImage) // performance evaluation option
{
texnum0 = texnum1 = tr.dlightImage->texnum;
}
if (glState.currenttextures[1] != texnum1)
{
GL_SelectTexture(1);
image1->frameUsed = tr.frameCount;
glState.currenttextures[1] = texnum1;
qglBindTexture(GL_TEXTURE_2D, texnum1);
}
if (glState.currenttextures[0] != texnum0)
{
GL_SelectTexture(0);
image0->frameUsed = tr.frameCount;
glState.currenttextures[0] = texnum0;
qglBindTexture(GL_TEXTURE_2D, texnum0);
}
}
/*
** GL_Cull
*/
void GL_Cull(int cullType)
{
if (glState.faceCulling == cullType)
{
return;
}
glState.faceCulling = cullType;
if (cullType == CT_TWO_SIDED)
{
qglDisable(GL_CULL_FACE);
}
else
{
qglEnable(GL_CULL_FACE);
if (cullType == CT_BACK_SIDED)
{
if (backEnd.viewParms.isMirror)
{
qglCullFace(GL_FRONT);
}
else
{
qglCullFace(GL_BACK);
}
}
else
{
if (backEnd.viewParms.isMirror)
{
qglCullFace(GL_BACK);
}
else
{
qglCullFace(GL_FRONT);
}
}
}
}
/*
** GL_TexEnv
*/
void GL_TexEnv(int env)
{
if (env == glState.texEnv[glState.currenttmu])
{
return;
}
glState.texEnv[glState.currenttmu] = env;
switch (env)
{
case GL_MODULATE:
qglTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
break;
case GL_REPLACE:
qglTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
break;
case GL_DECAL:
qglTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
break;
case GL_ADD:
qglTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
break;
default:
ri.Error(ERR_DROP, "GL_TexEnv: invalid env '%d' passed\n", env);
break;
}
}
/*
** GL_State
**
** This routine is responsible for setting the most commonly changed state
** in Q3.
*/
void GL_State(unsigned long stateBits)
{
unsigned long diff = stateBits ^ glState.glStateBits;
if (!diff)
{
return;
}
// check depthFunc bits
if (diff & GLS_DEPTHFUNC_EQUAL)
{
if (stateBits & GLS_DEPTHFUNC_EQUAL)
{
qglDepthFunc(GL_EQUAL);
}
else
{
qglDepthFunc(GL_LEQUAL);
}
}
// check blend bits
if (diff & (GLS_SRCBLEND_BITS | GLS_DSTBLEND_BITS))
{
GLenum srcFactor, dstFactor;
if (stateBits & (GLS_SRCBLEND_BITS | GLS_DSTBLEND_BITS))
{
switch (stateBits & GLS_SRCBLEND_BITS)
{
case GLS_SRCBLEND_ZERO:
srcFactor = GL_ZERO;
break;
case GLS_SRCBLEND_ONE:
srcFactor = GL_ONE;
break;
case GLS_SRCBLEND_DST_COLOR:
srcFactor = GL_DST_COLOR;
break;
case GLS_SRCBLEND_ONE_MINUS_DST_COLOR:
srcFactor = GL_ONE_MINUS_DST_COLOR;
break;
case GLS_SRCBLEND_SRC_ALPHA:
srcFactor = GL_SRC_ALPHA;
break;
case GLS_SRCBLEND_ONE_MINUS_SRC_ALPHA:
srcFactor = GL_ONE_MINUS_SRC_ALPHA;
break;
case GLS_SRCBLEND_DST_ALPHA:
srcFactor = GL_DST_ALPHA;
break;
case GLS_SRCBLEND_ONE_MINUS_DST_ALPHA:
srcFactor = GL_ONE_MINUS_DST_ALPHA;
break;
case GLS_SRCBLEND_ALPHA_SATURATE:
srcFactor = GL_SRC_ALPHA_SATURATE;
break;
default:
srcFactor = GL_ONE; // to get warning to shut up
ri.Error(ERR_DROP, "GL_State: invalid src blend state bits\n");
break;
}
switch (stateBits & GLS_DSTBLEND_BITS)
{
case GLS_DSTBLEND_ZERO:
dstFactor = GL_ZERO;
break;
case GLS_DSTBLEND_ONE:
dstFactor = GL_ONE;
break;
case GLS_DSTBLEND_SRC_COLOR:
dstFactor = GL_SRC_COLOR;
break;
case GLS_DSTBLEND_ONE_MINUS_SRC_COLOR:
dstFactor = GL_ONE_MINUS_SRC_COLOR;
break;
case GLS_DSTBLEND_SRC_ALPHA:
dstFactor = GL_SRC_ALPHA;
break;
case GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA:
dstFactor = GL_ONE_MINUS_SRC_ALPHA;
break;
case GLS_DSTBLEND_DST_ALPHA:
dstFactor = GL_DST_ALPHA;
break;
case GLS_DSTBLEND_ONE_MINUS_DST_ALPHA:
dstFactor = GL_ONE_MINUS_DST_ALPHA;
break;
default:
dstFactor = GL_ONE; // to get warning to shut up
ri.Error(ERR_DROP, "GL_State: invalid dst blend state bits\n");
break;
}
qglEnable(GL_BLEND);
qglBlendFunc(srcFactor, dstFactor);
}
else
{
qglDisable(GL_BLEND);
}
}
// check depthmask
if (diff & GLS_DEPTHMASK_TRUE)
{
if (stateBits & GLS_DEPTHMASK_TRUE)
{
qglDepthMask(GL_TRUE);
}
else
{
qglDepthMask(GL_FALSE);
}
}
// fill/line mode
if (diff & GLS_POLYMODE_LINE)
{
if (stateBits & GLS_POLYMODE_LINE)
{
qglPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
}
else
{
qglPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
}
// depthtest
if (diff & GLS_DEPTHTEST_DISABLE)
{
if (stateBits & GLS_DEPTHTEST_DISABLE)
{
qglDisable(GL_DEPTH_TEST);
}
else
{
qglEnable(GL_DEPTH_TEST);
}
}
// alpha test
if (diff & GLS_ATEST_BITS)
{
switch (stateBits & GLS_ATEST_BITS)
{
case 0:
qglDisable(GL_ALPHA_TEST);
break;
case GLS_ATEST_GT_0:
qglEnable(GL_ALPHA_TEST);
qglAlphaFunc(GL_GREATER, 0.0f);
break;
case GLS_ATEST_LT_80:
qglEnable(GL_ALPHA_TEST);
qglAlphaFunc(GL_LESS, 0.5f);
break;
case GLS_ATEST_GE_80:
qglEnable(GL_ALPHA_TEST);
qglAlphaFunc(GL_GEQUAL, 0.5f);
break;
default:
assert(0);
break;
}
}
glState.glStateBits = stateBits;
}
/*
================
RB_Hyperspace
A player has predicted a teleport, but hasn't arrived yet
================
*/
static void RB_Hyperspace(void)
{
float c;
c = (backEnd.refdef.time & 255) / 255.0f;
qglClearColor(c, c, c, 1);
qglClear(GL_COLOR_BUFFER_BIT);
backEnd.isHyperspace = qtrue;
}
static void SetViewportAndScissor(void)
{
qglMatrixMode(GL_PROJECTION);
qglLoadMatrixf(backEnd.viewParms.projectionMatrix);
qglMatrixMode(GL_MODELVIEW);
// set the window clipping
qglViewport(backEnd.viewParms.viewportX, backEnd.viewParms.viewportY,
backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight);
qglScissor(backEnd.viewParms.viewportX, backEnd.viewParms.viewportY,
backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight);
}
/*
=================
RB_BeginDrawingView
Any mirrored or portaled views have already been drawn, so prepare
to actually render the visible surfaces for this view
=================
*/
void RB_BeginDrawingView(void)
{
int clearBits = 0;
// sync with gl if needed
if (r_finish->integer == 1 && !glState.finishCalled)
{
qglFinish();
glState.finishCalled = qtrue;
}
if (r_finish->integer == 0)
{
glState.finishCalled = qtrue;
}
// we will need to change the projection matrix before drawing
// 2D images again
backEnd.projection2D = qfalse;
// set the modelview matrix for the viewer
SetViewportAndScissor();
// ensures that depth writes are enabled for the depth clear
GL_State(GLS_DEFAULT);
////////// (SA) modified to ensure one glclear() per frame at most
// clear relevant buffers
clearBits = 0;
if (r_measureOverdraw->integer || r_shadows->integer == 2)
{
clearBits |= GL_STENCIL_BUFFER_BIT;
}
// ydnar: global q3 fog volume
else if (tr.world && tr.world->globalFog >= 0)
{
clearBits |= GL_DEPTH_BUFFER_BIT;
clearBits |= GL_COLOR_BUFFER_BIT;
//
qglClearColor(tr.world->fogs[tr.world->globalFog].shader->fogParms.color[0] * tr.identityLight,
tr.world->fogs[tr.world->globalFog].shader->fogParms.color[1] * tr.identityLight,
tr.world->fogs[tr.world->globalFog].shader->fogParms.color[2] * tr.identityLight, 1.0);
}
else if (skyboxportal)
{
if (backEnd.refdef.rdflags & RDF_SKYBOXPORTAL) // portal scene, clear whatever is necessary
{
clearBits |= GL_DEPTH_BUFFER_BIT;
if (r_fastsky->integer || backEnd.refdef.rdflags & RDF_NOWORLDMODEL) // fastsky: clear color
{ // try clearing first with the portal sky fog color, then the world fog color, then finally a default
clearBits |= GL_COLOR_BUFFER_BIT;
if (glfogsettings[FOG_PORTALVIEW].registered)
{
qglClearColor(glfogsettings[FOG_PORTALVIEW].color[0], glfogsettings[FOG_PORTALVIEW].color[1], glfogsettings[FOG_PORTALVIEW].color[2], glfogsettings[FOG_PORTALVIEW].color[3]);
}
else if (glfogNum > FOG_NONE && glfogsettings[FOG_CURRENT].registered)
{
qglClearColor(glfogsettings[FOG_CURRENT].color[0], glfogsettings[FOG_CURRENT].color[1], glfogsettings[FOG_CURRENT].color[2], glfogsettings[FOG_CURRENT].color[3]);
}
else
{
qglClearColor(0.5, 0.5, 0.5, 1.0);
}
}
else // rendered sky (either clear color or draw quake sky)
{
if (glfogsettings[FOG_PORTALVIEW].registered)
{
qglClearColor(glfogsettings[FOG_PORTALVIEW].color[0], glfogsettings[FOG_PORTALVIEW].color[1], glfogsettings[FOG_PORTALVIEW].color[2], glfogsettings[FOG_PORTALVIEW].color[3]);
if (glfogsettings[FOG_PORTALVIEW].clearscreen) // portal fog requests a screen clear (distance fog rather than quake sky)
{
clearBits |= GL_COLOR_BUFFER_BIT;
}
}
}
}
else // world scene with portal sky, don't clear any buffers, just set the fog color if there is one
{
clearBits |= GL_DEPTH_BUFFER_BIT; // this will go when I get the portal sky rendering way out in the zbuffer (or not writing to zbuffer at all)
if (glfogNum > FOG_NONE && glfogsettings[FOG_CURRENT].registered)
{
if (backEnd.refdef.rdflags & RDF_UNDERWATER)
{
if (glfogsettings[FOG_CURRENT].mode == GL_LINEAR)
{
clearBits |= GL_COLOR_BUFFER_BIT;
}
}
else if (!(r_portalsky->integer)) // portal skies have been manually turned off, clear bg color
{
clearBits |= GL_COLOR_BUFFER_BIT;
}
qglClearColor(glfogsettings[FOG_CURRENT].color[0], glfogsettings[FOG_CURRENT].color[1], glfogsettings[FOG_CURRENT].color[2], glfogsettings[FOG_CURRENT].color[3]);
}
else if (!(r_portalsky->integer)) // ydnar: portal skies have been manually turned off, clear bg color
{
clearBits |= GL_COLOR_BUFFER_BIT;
qglClearColor(0.5, 0.5, 0.5, 1.0);
}
}
}
else // world scene with no portal sky
{
clearBits |= GL_DEPTH_BUFFER_BIT;
// NERVE - SMF - we don't want to clear the buffer when no world model is specified
if (backEnd.refdef.rdflags & RDF_NOWORLDMODEL)
{
clearBits &= ~GL_COLOR_BUFFER_BIT;
}
// -NERVE - SMF
else if (r_fastsky->integer || backEnd.refdef.rdflags & RDF_NOWORLDMODEL)
{
clearBits |= GL_COLOR_BUFFER_BIT;
if (glfogsettings[FOG_CURRENT].registered) // try to clear fastsky with current fog color
{
qglClearColor(glfogsettings[FOG_CURRENT].color[0], glfogsettings[FOG_CURRENT].color[1], glfogsettings[FOG_CURRENT].color[2], glfogsettings[FOG_CURRENT].color[3]);
}
else
{
qglClearColor(0.05, 0.05, 0.05, 1.0); // JPW NERVE changed per id req was 0.5s
}
}
else // world scene, no portal sky, not fastsky, clear color if fog says to, otherwise, just set the clearcolor
{
if (glfogsettings[FOG_CURRENT].registered) // try to clear fastsky with current fog color
{
qglClearColor(glfogsettings[FOG_CURRENT].color[0], glfogsettings[FOG_CURRENT].color[1], glfogsettings[FOG_CURRENT].color[2], glfogsettings[FOG_CURRENT].color[3]);
if (glfogsettings[FOG_CURRENT].clearscreen) // world fog requests a screen clear (distance fog rather than quake sky)
{
clearBits |= GL_COLOR_BUFFER_BIT;
}
}
}
}
// ydnar: don't clear the color buffer when no world model is specified
if (backEnd.refdef.rdflags & RDF_NOWORLDMODEL)
{
clearBits &= ~GL_COLOR_BUFFER_BIT;
}
if (clearBits)
{
qglClear(clearBits);
}
//----(SA) done
if ((backEnd.refdef.rdflags & RDF_HYPERSPACE))
{
RB_Hyperspace();
return;
}
else
{
backEnd.isHyperspace = qfalse;
}
glState.faceCulling = -1; // force face culling to set next time
// we will only draw a sun if there was sky rendered in this view
backEnd.skyRenderedThisView = qfalse;
// clip to the plane of the portal
if (backEnd.viewParms.isPortal)
{
float plane[4];
double plane2[4];
plane[0] = backEnd.viewParms.portalPlane.normal[0];
plane[1] = backEnd.viewParms.portalPlane.normal[1];
plane[2] = backEnd.viewParms.portalPlane.normal[2];
plane[3] = backEnd.viewParms.portalPlane.dist;
plane2[0] = DotProduct(backEnd.viewParms.orientation.axis[0], plane);
plane2[1] = DotProduct(backEnd.viewParms.orientation.axis[1], plane);
plane2[2] = DotProduct(backEnd.viewParms.orientation.axis[2], plane);
plane2[3] = DotProduct(plane, backEnd.viewParms.orientation.origin) - plane[3];
qglLoadMatrixf(s_flipMatrix);
qglClipPlane(GL_CLIP_PLANE0, plane2);
qglEnable(GL_CLIP_PLANE0);
}
else
{
qglDisable(GL_CLIP_PLANE0);
}
}
#define MAC_EVENT_PUMP_MSEC 5
/*
==================
RB_RenderDrawSurfList
==================
*/
void RB_RenderDrawSurfList(drawSurf_t *drawSurfs, int numDrawSurfs)
{
shader_t *shader, *oldShader;
int fogNum, oldFogNum;
int entityNum, oldEntityNum;
int frontFace;
int dlighted, oldDlighted;
qboolean depthRange, oldDepthRange;
int i;
drawSurf_t *drawSurf;
int oldSort;
float originalTime;
#ifdef __MACOS__
int macEventTime;
Sys_PumpEvents(); // crutch up the mac's limited buffer queue size
// we don't want to pump the event loop too often and waste time, so
// we are going to check every shader change
macEventTime = ri.Milliseconds() + MAC_EVENT_PUMP_MSEC;
#endif
// save original time for entity shader offsets
originalTime = backEnd.refdef.floatTime;
// clear the z buffer, set the modelview, etc
RB_BeginDrawingView();
// draw everything
oldEntityNum = -1;
backEnd.currentEntity = &tr.worldEntity;
oldShader = NULL;
oldFogNum = -1;
oldDepthRange = qfalse;
oldDlighted = qfalse;
oldSort = -1;
depthRange = qfalse;
backEnd.pc.c_surfaces += numDrawSurfs;
for (i = 0, drawSurf = drawSurfs ; i < numDrawSurfs ; i++, drawSurf++)
{
if (drawSurf->sort == oldSort)
{
// fast path, same as previous sort
rb_surfaceTable[*drawSurf->surface] (drawSurf->surface);
continue;
}
oldSort = drawSurf->sort;
R_DecomposeSort(drawSurf->sort, &entityNum, &shader, &fogNum, &frontFace, &dlighted);
//
// change the tess parameters if needed
// a "entityMergable" shader is a shader that can have surfaces from seperate
// entities merged into a single batch, like smoke and blood puff sprites
if (shader != oldShader || fogNum != oldFogNum || dlighted != oldDlighted
|| (entityNum != oldEntityNum && !shader->entityMergable))
{
if (oldShader != NULL)
{
#ifdef __MACOS__ // crutch up the mac's limited buffer queue size
int t;
t = ri.Milliseconds();
if (t > macEventTime)
{
macEventTime = t + MAC_EVENT_PUMP_MSEC;
Sys_PumpEvents();
}
#endif
RB_EndSurface();
}
RB_BeginSurface(shader, fogNum);
oldShader = shader;
oldFogNum = fogNum;
oldDlighted = dlighted;
}
// change the modelview matrix if needed
if (entityNum != oldEntityNum)
{
depthRange = qfalse;
if (entityNum != ENTITYNUM_WORLD)
{
backEnd.currentEntity = &backEnd.refdef.entities[entityNum];
backEnd.refdef.floatTime = originalTime; // - backEnd.currentEntity->e.shaderTime; // JPW NERVE pulled this to match q3ta
// we have to reset the shaderTime as well otherwise image animations start
// from the wrong frame
// tess.shaderTime = backEnd.refdef.floatTime - tess.shader->timeOffset;
// set up the transformation matrix
R_RotateForEntity(backEnd.currentEntity, &backEnd.viewParms, &backEnd.orientation);
// set up the dynamic lighting if needed
if (backEnd.currentEntity->needDlights)
{
R_TransformDlights(backEnd.refdef.num_dlights, backEnd.refdef.dlights, &backEnd.orientation);
}
if (backEnd.currentEntity->e.renderfx & RF_DEPTHHACK)
{
// hack the depth range to prevent view model from poking into walls
depthRange = qtrue;
}
}
else
{
backEnd.currentEntity = &tr.worldEntity;
backEnd.refdef.floatTime = originalTime;
backEnd.orientation = backEnd.viewParms.world;
// we have to reset the shaderTime as well otherwise image animations on
// the world (like water) continue with the wrong frame
// tess.shaderTime = backEnd.refdef.floatTime - tess.shader->timeOffset;
R_TransformDlights(backEnd.refdef.num_dlights, backEnd.refdef.dlights, &backEnd.orientation);
}
qglLoadMatrixf(backEnd.orientation.modelMatrix);
// change depthrange if needed
if (oldDepthRange != depthRange)
{
if (depthRange)
{
qglDepthRange(0, 0.3);
}
else
{
qglDepthRange(0, 1);
}
oldDepthRange = depthRange;
}
oldEntityNum = entityNum;
}
// add the triangles for this surface
rb_surfaceTable[*drawSurf->surface] (drawSurf->surface);
}
// draw the contents of the last shader batch
if (oldShader != NULL)
{
RB_EndSurface();
}
// go back to the world modelview matrix
backEnd.currentEntity = &tr.worldEntity;
backEnd.refdef.floatTime = originalTime;
backEnd.orientation = backEnd.viewParms.world;
R_TransformDlights(backEnd.refdef.num_dlights, backEnd.refdef.dlights, &backEnd.orientation);
qglLoadMatrixf(backEnd.viewParms.world.modelMatrix);
if (depthRange)
{
qglDepthRange(0, 1);
}
// (SA) draw sun
RB_DrawSun();
// darken down any stencil shadows
RB_ShadowFinish();
// add light flares on lights that aren't obscured
RB_RenderFlares();
#ifdef __MACOS__
Sys_PumpEvents(); // crutch up the mac's limited buffer queue size
#endif
}
/*
============================================================================
RENDER BACK END THREAD FUNCTIONS
============================================================================
*/
/*
================
RB_SetGL2D
================
*/
void RB_SetGL2D(void)
{
backEnd.projection2D = qtrue;
// set 2D virtual screen size
qglViewport(0, 0, glConfig.vidWidth, glConfig.vidHeight);
qglScissor(0, 0, glConfig.vidWidth, glConfig.vidHeight);
qglMatrixMode(GL_PROJECTION);
qglLoadIdentity();
qglOrtho(0, glConfig.vidWidth, glConfig.vidHeight, 0, 0, 1);
qglMatrixMode(GL_MODELVIEW);
qglLoadIdentity();
GL_State(GLS_DEPTHTEST_DISABLE |
GLS_SRCBLEND_SRC_ALPHA |
GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA);
qglDisable(GL_CULL_FACE);
qglDisable(GL_CLIP_PLANE0);
// set time for 2D shaders
backEnd.refdef.time = ri.Milliseconds();
backEnd.refdef.floatTime = backEnd.refdef.time * 0.001f;
}
/*
=============
RE_StretchRaw
FIXME: not exactly backend
Stretches a raw 32 bit power of 2 bitmap image over the given screen rectangle.
Used for cinematics.
=============
*/
void RE_StretchRaw(int x, int y, int w, int h, int cols, int rows, const byte *data, int client, qboolean dirty)
{
int i, j;
int start, end;
if (!tr.registered)
{
return;
}
R_SyncRenderThread();
// we definately want to sync every frame for the cinematics
qglFinish();
start = 0;
if (r_speeds->integer)
{
start = ri.Milliseconds();
}
// make sure rows and cols are powers of 2
for (i = 0 ; (1 << i) < cols ; i++)
{
}
for (j = 0 ; (1 << j) < rows ; j++)
{
}
if ((1 << i) != cols || (1 << j) != rows)
{
ri.Error(ERR_DROP, "Draw_StretchRaw: size not a power of 2: %i by %i", cols, rows);
}
GL_Bind(tr.scratchImage[client]);
// if the scratchImage isn't in the format we want, specify it as a new texture
if (cols != tr.scratchImage[client]->width || rows != tr.scratchImage[client]->height)
{
tr.scratchImage[client]->width = tr.scratchImage[client]->uploadWidth = cols;
tr.scratchImage[client]->height = tr.scratchImage[client]->uploadHeight = rows;
qglTexImage2D(GL_TEXTURE_2D, 0, 3, cols, rows, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
else
{
if (dirty)
{
// otherwise, just subimage upload it so that drivers can tell we are going to be changing
// it and don't try and do a texture compression
qglTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, cols, rows, GL_RGBA, GL_UNSIGNED_BYTE, data);
}
}
if (r_speeds->integer)
{
end = ri.Milliseconds();
ri.Printf(PRINT_ALL, "qglTexSubImage2D %i, %i: %i msec\n", cols, rows, end - start);
}
RB_SetGL2D();
qglColor3f(tr.identityLight, tr.identityLight, tr.identityLight);
qglBegin(GL_QUADS);
qglTexCoord2f(0.5f / cols, 0.5f / rows);
qglVertex2f(x, y);
qglTexCoord2f((cols - 0.5f) / cols, 0.5f / rows);
qglVertex2f(x + w, y);
qglTexCoord2f((cols - 0.5f) / cols, (rows - 0.5f) / rows);
qglVertex2f(x + w, y + h);
qglTexCoord2f(0.5f / cols, (rows - 0.5f) / rows);
qglVertex2f(x, y + h);
qglEnd();
}
void RE_UploadCinematic(int w, int h, int cols, int rows, const byte *data, int client, qboolean dirty)
{
GL_Bind(tr.scratchImage[client]);
// if the scratchImage isn't in the format we want, specify it as a new texture
if (cols != tr.scratchImage[client]->width || rows != tr.scratchImage[client]->height)
{
tr.scratchImage[client]->width = tr.scratchImage[client]->uploadWidth = cols;
tr.scratchImage[client]->height = tr.scratchImage[client]->uploadHeight = rows;
qglTexImage2D(GL_TEXTURE_2D, 0, 3, cols, rows, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
else
{
if (dirty)
{
// otherwise, just subimage upload it so that drivers can tell we are going to be changing
// it and don't try and do a texture compression
qglTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, cols, rows, GL_RGBA, GL_UNSIGNED_BYTE, data);
}
}
}
/*
=============
RB_SetColor
=============
*/
const void *RB_SetColor(const void *data)
{
const setColorCommand_t *cmd;
cmd = ( const setColorCommand_t * ) data;
backEnd.color2D[0] = cmd->color[0] * 255;
backEnd.color2D[1] = cmd->color[1] * 255;
backEnd.color2D[2] = cmd->color[2] * 255;
backEnd.color2D[3] = cmd->color[3] * 255;
return ( const void * ) (cmd + 1);
}
/*
=============
RB_StretchPic
=============
*/
const void *RB_StretchPic(const void *data)