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fteqw/engine/gl/gl_draw.c
Spoike 97579ebfbb bugfixes: 
hexen2 players now have colourmaps again. doesn't crash with rgb player colours.
hexen2 colour previews now work (as well as they did in actual hexen2, anyway)
fix possible issue with 'bad type - needs fixing'
color command now longer omits 0 values when displaying.
readded support for all hexen2 palette lookup types.
fixed some hexen2 image positions.
using premultiplied alpha for pics as an easy fix for hexen2's various ugly halos.
the checkerboard texture is back!
fix q1 maps that have more than 32k clipplanes.
new features:
when associated with mdl etc file extensions, now opens up the modelviewer. also potentially changes gamedir (this applies to bsps too).
multiplayer setup menu now supports selecting rgb colours (lower colour remains with the 14 team colours). press shift for the normal/hue colour selection instead. 
attempt to use bgra for texture uploads by default where available. reimplement possible support for 16bit textures.
attempt to implement gamepad support for web port. untested, but should be completeish.

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4764 fc73d0e0-1445-4013-8a0c-d673dee63da5
2014-10-11 19:39:45 +00:00

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/*
Copyright (C) 1996-1997 Id Software, Inc.
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.
*/
// draw.c -- this is the only file outside the refresh that touches the
// vid buffer
#include "quakedef.h"
#ifdef GLQUAKE
#include "glquake.h"
#include "shader.h"
#include "gl_draw.h"
extern cvar_t gl_max_size;
extern cvar_t gl_picmip;
extern cvar_t gl_lerpimages;
extern cvar_t gl_picmip2d;
extern cvar_t gl_compress;
extern cvar_t gl_smoothcrosshair;
extern cvar_t gl_texturemode, gl_texture_anisotropic_filtering;
float gl_anisotropy_factor;
static int gl_filter_pic[3]; //ui elements
static int gl_filter_mip[3]; //everything else
int gl_mipcap_min = 0;
int gl_mipcap_max = 1000;
void GL_DestroyTexture(texid_t tex)
{
if (!tex)
return;
if (tex->num)
qglDeleteTextures(1, &tex->num);
tex->num = 0;
}
/*
===============
Draw_Init
===============
*/
void GLDraw_Init (void)
{
R2D_Init();
TRACE(("dbg: GLDraw_ReInit: GL_BeginRendering\n"));
GL_BeginRendering ();
TRACE(("dbg: GLDraw_ReInit: SCR_DrawLoading\n"));
qglDisable(GL_SCISSOR_TEST);
GL_Set2D(false);
qglClearColor(0, 0, 0, 1);
qglClear(GL_COLOR_BUFFER_BIT);
{
mpic_t *pic = R2D_SafeCachePic ("gfx/loading.lmp");
if (pic)
R2D_ScalePic ( ((int)vid.width - pic->width)/2,
((int)vid.height - 48 - pic->height)/2, pic->width, pic->height, pic);
}
TRACE(("dbg: GLDraw_ReInit: GL_EndRendering\n"));
GL_EndRendering ();
VID_SwapBuffers();
GL_SetupSceneProcessingTextures();
//
// get the other pics we need
//
TRACE(("dbg: GLDraw_ReInit: R2D_SafePicFromWad\n"));
draw_disc = R2D_SafePicFromWad ("disc");
#ifdef GL_USE8BITTEX
inited15to8 = false;
#endif
qglClearColor (1,0,0,1);
TRACE(("dbg: GLDraw_ReInit: PPL_LoadSpecularFragmentProgram\n"));
GL_InitSceneProcessingShaders();
// Cmd_AddCommandD ("r_imagelist", GLDraw_ImageList_f, "Debug command. Reveals current list of loaded images.");
}
void GLDraw_DeInit (void)
{
Cmd_RemoveCommand ("r_imagelist");
R2D_Shutdown();
R_GAliasFlushSkinCache(true);
draw_disc = NULL;
GL_ShutdownPostProcessing();
Image_Shutdown();
#ifdef RTLIGHTS
Sh_Shutdown();
#endif
Shader_Shutdown();
}
//=============================================================================
/*
================
GL_Set2D
Setup as if the screen was 320*200
================
*/
void GL_Set2D (qboolean flipped)
{
extern cvar_t gl_screenangle;
float rad, ang;
float tmp[16], tmp2[16];
float w = vid.width, h = vid.height;
qboolean fbo = !!*r_refdef.rt_destcolour[0].texname;
if (fbo)
{
R2D_RT_GetTexture(r_refdef.rt_destcolour[0].texname, &vid.fbpwidth, &vid.fbpheight);
vid.fbvwidth = vid.fbpwidth;
vid.fbvheight = vid.fbpheight;
}
else
{
vid.fbvwidth = vid.width;
vid.fbvheight = vid.height;
vid.fbpwidth = vid.pixelwidth;
vid.fbpheight = vid.pixelheight;
}
ang = (gl_screenangle.value>0?(gl_screenangle.value+45):(gl_screenangle.value-45))/90;
ang = (int)ang * 90;
if (ang && !fbo)
{ /*more expensive maths*/
rad = (ang * M_PI) / 180;
w = fabs(cos(rad)) * (vid.width) + fabs(sin(rad)) * (vid.height);
h = fabs(sin(rad)) * (vid.width) + fabs(cos(rad)) * (vid.height);
Matrix4x4_CM_Orthographic(r_refdef.m_projection, w/-2.0f, w/2.0f, h/2.0f, h/-2.0f, -99999, 99999);
Matrix4x4_Identity(tmp);
Matrix4_Multiply(Matrix4x4_CM_NewTranslation((vid.width/-2.0f), (vid.height/-2.0f), 0), tmp, tmp2);
Matrix4_Multiply(Matrix4x4_CM_NewRotation(-ang, 0, 0, 1), tmp2, r_refdef.m_view);
}
else
{
w = vid.fbvwidth;
h = vid.fbvheight;
if (flipped)
Matrix4x4_CM_Orthographic(r_refdef.m_projection, 0, w, 0, h, -99999, 99999);
else
Matrix4x4_CM_Orthographic(r_refdef.m_projection, 0, w, h, 0, -99999, 99999);
Matrix4x4_Identity(r_refdef.m_view);
}
//current physical position on the current render target.
r_refdef.pxrect.x = 0;
r_refdef.pxrect.y = 0;
r_refdef.pxrect.width = vid.fbpwidth;
r_refdef.pxrect.height = vid.fbpheight;
r_refdef.pxrect.maxheight = vid.fbpheight;
r_refdef.time = realtime;
/*flush that gl state*/
GL_ViewportUpdate();
if (qglLoadMatrixf)
{
qglMatrixMode(GL_PROJECTION);
qglLoadMatrixf(r_refdef.m_projection);
qglMatrixMode(GL_MODELVIEW);
qglLoadMatrixf(r_refdef.m_view);
}
GL_SetShaderState2D(true);
}
//====================================================================
#ifndef GL_COMPRESSED_RGB_S3TC_DXT1_EXT
#define GL_COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0
#define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1
#define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2
#define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3
#endif
//note: needs to be bound first, so the 'targ' argument shouldn't be a problem.
static void GL_Texturemode_Apply(GLenum targ, unsigned int flags)
{
int min, mag;
int *filter = (flags & IF_UIPIC)?gl_filter_pic:gl_filter_mip;
if (targ == GL_TEXTURE_CUBE_MAP_ARB)
flags |= IF_NOMIPMAP;
if ((filter[2] && !(flags & IF_NEAREST)) || (flags & IF_LINEAR))
mag = GL_LINEAR;
else
mag = GL_NEAREST;
if (filter[1] == -1 || (flags & IF_NOMIPMAP))
{
if ((filter[0] && !(flags & IF_NEAREST)) || (flags & IF_LINEAR))
min = GL_LINEAR;
else
min = GL_NEAREST;
}
else
{
if ((filter[1] && !(flags & IF_NEAREST)) || (flags & IF_LINEAR))
{
if (filter[0])
min = GL_LINEAR_MIPMAP_LINEAR;
else
min = GL_NEAREST_MIPMAP_LINEAR;
}
else
{
if (filter[0])
min = GL_LINEAR_MIPMAP_NEAREST;
else
min = GL_NEAREST_MIPMAP_NEAREST;
}
}
qglTexParameteri(targ, GL_TEXTURE_MIN_FILTER, min);
qglTexParameteri(targ, GL_TEXTURE_MAG_FILTER, mag);
if (gl_anisotropy_factor) //0 means driver doesn't support
{
//only use anisotrophy when using linear any linear, because of drivers that forces linear sampling when anis is active (annoyingly this is allowed by the spec).
if ((min == GL_LINEAR || min == GL_LINEAR_MIPMAP_LINEAR || min == GL_LINEAR_MIPMAP_NEAREST) && mag == GL_LINEAR)
qglTexParameterf(targ, GL_TEXTURE_MAX_ANISOTROPY_EXT, gl_anisotropy_factor);
else
qglTexParameterf(targ, GL_TEXTURE_MAX_ANISOTROPY_EXT, 1);
}
}
qboolean GL_LoadTextureMips(texid_t tex, struct pendingtextureinfo *mips)
{
static int cubeface[] =
{
GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
};
int targ, targface;
int i, j;
if (gl_config.gles)
{
//gles requires that the internal format must match format
//this means we can't specify 24.0 modes with a 24.8 datatype.
//arguably we shouldn't do this anyway, but there are differences that q3 shaders can notice.
//fixme: move elsewhere?
if (mips->encoding == PTI_RGBX8)
mips->encoding = PTI_RGBA8;
if (mips->encoding == PTI_BGRX8)
mips->encoding = PTI_BGRA8;
}
if (!tex->num)
qglGenTextures(1, &tex->num);
switch((tex->flags & IF_TEXTYPE) >> IF_TEXTYPESHIFT)
{
default:
case 0:
targ = GL_TEXTURE_2D;
break;
case 1:
targ = GL_TEXTURE_3D;
break;
case 2:
targ = GL_TEXTURE_CUBE_MAP_ARB;
break;
}
GL_MTBind(0, targ, tex);
if (tex->flags&IF_CLAMP)
{
qglTexParameteri(targ, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
qglTexParameteri(targ, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
if (targ != GL_TEXTURE_2D)
qglTexParameteri(targ, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
}
else
{
qglTexParameteri(targ, GL_TEXTURE_WRAP_S, GL_REPEAT);
qglTexParameteri(targ, GL_TEXTURE_WRAP_T, GL_REPEAT);
if (targ != GL_TEXTURE_2D)
qglTexParameteri(targ, GL_TEXTURE_WRAP_R, GL_REPEAT);
}
tex->width = mips->mip[0].width;
tex->height = mips->mip[0].height;
GL_Texturemode_Apply(targ, tex->flags);
if (targ == GL_TEXTURE_3D)
{
targface = targ;
for (i = 0; i < mips->mipcount; i++)
{
int size = mips->mip[i].height;
switch(mips->encoding)
{
case PTI_RGBX8:
qglTexImage3D(targface, i, GL_RGB, size, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, mips->mip[i].data);
break;
case PTI_RGBA8:
qglTexImage3D(targface, i, GL_RGBA, size, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, mips->mip[i].data);
break;
case PTI_BGRX8:
qglTexImage3D(targface, i, GL_RGB, size, size, size, 0, GL_BGRA_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, mips->mip[i].data);
break;
case PTI_BGRA8:
default:
qglTexImage3D(targface, i, GL_RGBA, size, size, size, 0, GL_BGRA_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, mips->mip[i].data);
break;
case PTI_RGBA4444:
qglTexImage3D(targface, i, GL_RGBA, size, size, size, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, mips->mip[i].data);
break;
case PTI_RGBA5551:
qglTexImage3D(targface, i, GL_RGBA, size, size, size, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, mips->mip[i].data);
break;
case PTI_RGB565:
qglTexImage3D(targface, i, GL_RGB, size, size, size, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, mips->mip[i].data);
break;
}
if (mips->mip[i].needfree)
Z_Free(mips->mip[i].data);
}
}
else
{
//2d or cubemaps
for (i = 0; i < mips->mipcount; i++)
{
if (tex->flags & IF_TEXTYPE)
{
targface = cubeface[i];
j = 0;
}
else
{
targface = targ;
j = i;
}
switch(mips->encoding)
{
//32bit formats
case PTI_RGBX8:
qglTexImage2D(targface, j, GL_RGB, mips->mip[i].width, mips->mip[i].height, 0, GL_RGBA, GL_UNSIGNED_BYTE, mips->mip[i].data);
break;
case PTI_RGBA8:
qglTexImage2D(targface, j, GL_RGBA, mips->mip[i].width, mips->mip[i].height, 0, GL_RGBA, GL_UNSIGNED_BYTE, mips->mip[i].data);
break;
case PTI_BGRX8:
qglTexImage2D(targface, j, GL_RGB, mips->mip[i].width, mips->mip[i].height, 0, GL_BGRA_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, mips->mip[i].data);
break;
case PTI_BGRA8:
default:
qglTexImage2D(targface, j, GL_RGBA, mips->mip[i].width, mips->mip[i].height, 0, GL_BGRA_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, mips->mip[i].data);
break;
//16bit formats
case PTI_RGBA4444:
qglTexImage2D(targface, j, GL_RGBA, mips->mip[i].width, mips->mip[i].height, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, mips->mip[i].data);
break;
case PTI_RGBA5551:
qglTexImage2D(targface, j, GL_RGBA, mips->mip[i].width, mips->mip[i].height, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, mips->mip[i].data);
break;
case PTI_ARGB4444:
qglTexImage2D(targface, j, GL_RGBA, mips->mip[i].width, mips->mip[i].height, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV, mips->mip[i].data);
break;
case PTI_ARGB1555:
qglTexImage2D(targface, j, GL_RGBA, mips->mip[i].width, mips->mip[i].height, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT_1_5_5_5_REV, mips->mip[i].data);
break;
case PTI_RGB565:
qglTexImage2D(targface, j, GL_RGB, mips->mip[i].width, mips->mip[i].height, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, mips->mip[i].data);
break;
//compressed formats
case PTI_S3RGB1:
qglCompressedTexImage2DARB(targface, j, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, mips->mip[i].width, mips->mip[i].height, 0, mips->mip[i].datasize, mips->mip[i].data);
break;
case PTI_S3RGBA1:
qglCompressedTexImage2DARB(targface, j, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, mips->mip[i].width, mips->mip[i].height, 0, mips->mip[i].datasize, mips->mip[i].data);
break;
case PTI_S3RGBA3:
qglCompressedTexImage2DARB(targface, j, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, mips->mip[i].width, mips->mip[i].height, 0, mips->mip[i].datasize, mips->mip[i].data);
break;
case PTI_S3RGBA5:
qglCompressedTexImage2DARB(targface, j, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, mips->mip[i].width, mips->mip[i].height, 0, mips->mip[i].datasize, mips->mip[i].data);
break;
}
if (mips->mip[i].needfree)
Z_Free(mips->mip[i].data);
}
}
if (!gl_config.gles) //make sure the texture is complete even if the mips are not.
{
if (targ != GL_TEXTURE_CUBE_MAP_ARB && (tex->flags & IF_MIPCAP))
{
qglTexParameteri(targ, GL_TEXTURE_BASE_LEVEL, min(mips->mipcount-1, gl_mipcap_min));
qglTexParameteri(targ, GL_TEXTURE_MAX_LEVEL, min(mips->mipcount, gl_mipcap_max));
}
}
if (mips->extrafree)
Z_Free(mips->extrafree);
return true;
}
void GL_UpdateFiltering(image_t *imagelist, int filtermip[3], int filterpic[3], int mipcap[2], float anis)
{
int targ;
image_t *img;
gl_mipcap_min = mipcap[0];
gl_mipcap_max = mipcap[1];
VectorCopy(filterpic, gl_filter_pic);
VectorCopy(filtermip, gl_filter_mip);
//bound carefully, so that we get 0 if anisrophy is not supported at all (1 is fine). we can then test against 0 (which is an otherwise-invalid value) avoiding gl errors.
if (anis > gl_config.ext_texture_filter_anisotropic)
gl_anisotropy_factor = gl_config.ext_texture_filter_anisotropic;
else if (anis < 1)
gl_anisotropy_factor = 1;
else
gl_anisotropy_factor = anis;
// change all the existing mipmap texture objects
for (img=imagelist ; img ; img=img->next)
{
switch((img->flags & IF_TEXTYPE) >> IF_TEXTYPESHIFT)
{
case 0:
targ = GL_TEXTURE_2D;
break;
case 1:
targ = GL_TEXTURE_3D;
break;
default:
targ = GL_TEXTURE_CUBE_MAP_ARB;
break;
}
if (img->status != TEX_LOADED)
continue;
GL_MTBind(0, targ, img);
GL_Texturemode_Apply(targ, img->flags);
//should we do dynamic mipcap settings? this bugs out ATI.
/*
if (!gl_config.gles && (tex->flags & IF_MIPCAP))
{
qglTexParameteri(targ, GL_TEXTURE_BASE_LEVEL, gl_mipcap_min);
qglTexParameteri(targ, GL_TEXTURE_MAX_LEVEL, gl_mipcap_max);
}
*/
}
}
#endif
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