499 lines
14 KiB
C
499 lines
14 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// draw.c -- this is the only file outside the refresh that touches the
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// vid buffer
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#include "quakedef.h"
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#ifdef GLQUAKE
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#include "glquake.h"
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#include "shader.h"
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#include "gl_draw.h"
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extern cvar_t gl_max_size;
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extern cvar_t gl_picmip;
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extern cvar_t gl_lerpimages;
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extern cvar_t gl_picmip2d;
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extern cvar_t gl_compress;
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extern cvar_t gl_smoothcrosshair;
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extern cvar_t gl_texturemode, gl_texture_anisotropic_filtering;
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float gl_anisotropy_factor;
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static int gl_filter_pic[3]; //ui elements
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static int gl_filter_mip[3]; //everything else
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int gl_mipcap_min = 0;
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int gl_mipcap_max = 1000;
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void GL_DestroyTexture(texid_t tex)
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{
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if (!tex)
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return;
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if (tex->num)
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qglDeleteTextures(1, &tex->num);
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tex->num = 0;
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}
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/*
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===============
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Draw_Init
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===============
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*/
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void GLDraw_Init (void)
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{
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R2D_Init();
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TRACE(("dbg: GLDraw_ReInit: GL_BeginRendering\n"));
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GL_BeginRendering ();
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TRACE(("dbg: GLDraw_ReInit: SCR_DrawLoading\n"));
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qglDisable(GL_SCISSOR_TEST);
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GL_Set2D(false);
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qglClearColor(0, 0, 0, 1);
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qglClear(GL_COLOR_BUFFER_BIT);
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{
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mpic_t *pic = R2D_SafeCachePic ("gfx/loading.lmp");
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if (pic)
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R2D_ScalePic ( ((int)vid.width - pic->width)/2,
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((int)vid.height - 48 - pic->height)/2, pic->width, pic->height, pic);
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}
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TRACE(("dbg: GLDraw_ReInit: GL_EndRendering\n"));
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GL_EndRendering ();
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VID_SwapBuffers();
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GL_SetupSceneProcessingTextures();
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//
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// get the other pics we need
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//
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TRACE(("dbg: GLDraw_ReInit: R2D_SafePicFromWad\n"));
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draw_disc = R2D_SafePicFromWad ("disc");
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#ifdef GL_USE8BITTEX
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inited15to8 = false;
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#endif
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qglClearColor (1,0,0,1);
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TRACE(("dbg: GLDraw_ReInit: PPL_LoadSpecularFragmentProgram\n"));
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GL_InitSceneProcessingShaders();
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// Cmd_AddCommandD ("r_imagelist", GLDraw_ImageList_f, "Debug command. Reveals current list of loaded images.");
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}
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void GLDraw_DeInit (void)
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{
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Cmd_RemoveCommand ("r_imagelist");
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R2D_Shutdown();
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R_GAliasFlushSkinCache(true);
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draw_disc = NULL;
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GL_ShutdownPostProcessing();
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#ifdef RTLIGHTS
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Sh_Shutdown();
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#endif
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Shader_Shutdown();
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}
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//=============================================================================
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/*
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================
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GL_Set2D
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Setup as if the screen was 320*200
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================
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*/
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void GL_Set2D (qboolean flipped)
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{
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extern cvar_t gl_screenangle;
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float rad, ang;
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float tmp[16], tmp2[16];
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float w = vid.width, h = vid.height;
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qboolean fbo = !!*r_refdef.rt_destcolour[0].texname;
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if (fbo)
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{
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R2D_RT_GetTexture(r_refdef.rt_destcolour[0].texname, &vid.fbpwidth, &vid.fbpheight);
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vid.fbvwidth = vid.fbpwidth;
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vid.fbvheight = vid.fbpheight;
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flipped ^= true;
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}
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else
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{
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vid.fbvwidth = vid.width;
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vid.fbvheight = vid.height;
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vid.fbpwidth = vid.pixelwidth;
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vid.fbpheight = vid.pixelheight;
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}
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ang = (gl_screenangle.value>0?(gl_screenangle.value+45):(gl_screenangle.value-45))/90;
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ang = (int)ang * 90;
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if (ang && !fbo)
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{ /*more expensive maths*/
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rad = (ang * M_PI) / 180;
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w = fabs(cos(rad)) * (vid.width) + fabs(sin(rad)) * (vid.height);
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h = fabs(sin(rad)) * (vid.width) + fabs(cos(rad)) * (vid.height);
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Matrix4x4_CM_Orthographic(r_refdef.m_projection, w/-2.0f, w/2.0f, h/2.0f, h/-2.0f, -99999, 99999);
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Matrix4x4_Identity(tmp);
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Matrix4_Multiply(Matrix4x4_CM_NewTranslation((vid.width/-2.0f), (vid.height/-2.0f), 0), tmp, tmp2);
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Matrix4_Multiply(Matrix4x4_CM_NewRotation(-ang, 0, 0, 1), tmp2, r_refdef.m_view);
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}
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else
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{
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w = vid.fbvwidth;
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h = vid.fbvheight;
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if (flipped)
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Matrix4x4_CM_Orthographic(r_refdef.m_projection, 0, w, 0, h, -99999, 99999);
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else
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Matrix4x4_CM_Orthographic(r_refdef.m_projection, 0, w, h, 0, -99999, 99999);
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Matrix4x4_Identity(r_refdef.m_view);
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}
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//current physical position on the current render target.
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r_refdef.pxrect.x = 0;
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r_refdef.pxrect.y = 0;
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r_refdef.pxrect.width = vid.fbpwidth;
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r_refdef.pxrect.height = vid.fbpheight;
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r_refdef.pxrect.maxheight = vid.fbpheight;
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r_refdef.time = realtime;
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/*flush that gl state*/
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GL_ViewportUpdate();
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if (qglLoadMatrixf)
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{
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qglMatrixMode(GL_PROJECTION);
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qglLoadMatrixf(r_refdef.m_projection);
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qglMatrixMode(GL_MODELVIEW);
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qglLoadMatrixf(r_refdef.m_view);
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}
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GL_SetShaderState2D(true);
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}
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//====================================================================
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#ifndef GL_COMPRESSED_RGB_S3TC_DXT1_EXT
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#define GL_COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0
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#define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1
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#define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2
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#define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3
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#endif
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//note: needs to be bound first, so the 'targ' argument shouldn't be a problem.
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static void GL_Texturemode_Apply(GLenum targ, unsigned int flags)
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{
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int min, mag;
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int *filter = (flags & IF_UIPIC)?gl_filter_pic:gl_filter_mip;
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if (targ == GL_TEXTURE_CUBE_MAP_ARB)
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flags |= IF_NOMIPMAP;
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if ((filter[2] && !(flags & IF_NEAREST)) || (flags & IF_LINEAR))
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mag = GL_LINEAR;
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else
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mag = GL_NEAREST;
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if (filter[1] == -1 || (flags & IF_NOMIPMAP))
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{
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if ((filter[0] && !(flags & IF_NEAREST)) || (flags & IF_LINEAR))
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min = GL_LINEAR;
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else
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min = GL_NEAREST;
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}
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else
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{
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if ((filter[1] && !(flags & IF_NEAREST)) || (flags & IF_LINEAR))
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{
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if (filter[0])
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min = GL_LINEAR_MIPMAP_LINEAR;
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else
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min = GL_NEAREST_MIPMAP_LINEAR;
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}
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else
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{
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if (filter[0])
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min = GL_LINEAR_MIPMAP_NEAREST;
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else
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min = GL_NEAREST_MIPMAP_NEAREST;
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}
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}
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qglTexParameteri(targ, GL_TEXTURE_MIN_FILTER, min);
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qglTexParameteri(targ, GL_TEXTURE_MAG_FILTER, mag);
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if (gl_anisotropy_factor) //0 means driver doesn't support
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{
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//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).
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if ((min == GL_LINEAR || min == GL_LINEAR_MIPMAP_LINEAR || min == GL_LINEAR_MIPMAP_NEAREST) && mag == GL_LINEAR)
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qglTexParameterf(targ, GL_TEXTURE_MAX_ANISOTROPY_EXT, gl_anisotropy_factor);
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else
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qglTexParameterf(targ, GL_TEXTURE_MAX_ANISOTROPY_EXT, 1);
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}
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}
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qboolean GL_LoadTextureMips(texid_t tex, struct pendingtextureinfo *mips)
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{
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static int cubeface[] =
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{
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GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
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GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
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GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
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GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
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GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
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GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
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};
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int targ, targface;
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int i, j;
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if (gl_config.gles)
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{
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//gles requires that the internal format must match format
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//this means we can't specify 24.0 modes with a 24.8 datatype.
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//arguably we shouldn't do this anyway, but there are differences that q3 shaders can notice.
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//fixme: move elsewhere?
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if (mips->encoding == PTI_RGBX8)
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mips->encoding = PTI_RGBA8;
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if (mips->encoding == PTI_BGRX8)
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mips->encoding = PTI_BGRA8;
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}
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if (!tex->num)
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qglGenTextures(1, &tex->num);
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switch((tex->flags & IF_TEXTYPE) >> IF_TEXTYPESHIFT)
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{
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default:
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case 0:
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targ = GL_TEXTURE_2D;
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break;
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case 1:
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targ = GL_TEXTURE_3D;
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break;
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case 2:
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targ = GL_TEXTURE_CUBE_MAP_ARB;
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break;
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}
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GL_MTBind(0, targ, tex);
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if (tex->flags&IF_CLAMP)
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{
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qglTexParameteri(targ, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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qglTexParameteri(targ, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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if (targ != GL_TEXTURE_2D)
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qglTexParameteri(targ, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
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}
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else
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{
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qglTexParameteri(targ, GL_TEXTURE_WRAP_S, GL_REPEAT);
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qglTexParameteri(targ, GL_TEXTURE_WRAP_T, GL_REPEAT);
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if (targ != GL_TEXTURE_2D)
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qglTexParameteri(targ, GL_TEXTURE_WRAP_R, GL_REPEAT);
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}
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tex->width = mips->mip[0].width;
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tex->height = mips->mip[0].height;
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GL_Texturemode_Apply(targ, tex->flags);
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if (targ == GL_TEXTURE_3D)
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{
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targface = targ;
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for (i = 0; i < mips->mipcount; i++)
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{
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int size = mips->mip[i].height;
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switch(mips->encoding)
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{
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case PTI_RGBX8:
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qglTexImage3D(targface, i, GL_RGB, size, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, mips->mip[i].data);
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break;
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case PTI_RGBA8:
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qglTexImage3D(targface, i, GL_RGBA, size, size, size, 0, GL_RGBA, GL_UNSIGNED_BYTE, mips->mip[i].data);
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break;
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case PTI_BGRX8:
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qglTexImage3D(targface, i, GL_RGB, size, size, size, 0, GL_BGRA_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, mips->mip[i].data);
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break;
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case PTI_BGRA8:
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default:
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qglTexImage3D(targface, i, GL_RGBA, size, size, size, 0, GL_BGRA_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, mips->mip[i].data);
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break;
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case PTI_RGBA4444:
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qglTexImage3D(targface, i, GL_RGBA, size, size, size, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, mips->mip[i].data);
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break;
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case PTI_RGBA5551:
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qglTexImage3D(targface, i, GL_RGBA, size, size, size, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, mips->mip[i].data);
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break;
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case PTI_RGB565:
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qglTexImage3D(targface, i, GL_RGB, size, size, size, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, mips->mip[i].data);
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break;
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}
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if (mips->mip[i].needfree)
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Z_Free(mips->mip[i].data);
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}
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}
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else
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{
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//2d or cubemaps
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for (i = 0; i < mips->mipcount; i++)
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{
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if (tex->flags & IF_TEXTYPE)
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{
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targface = cubeface[i];
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j = 0;
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}
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else
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{
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targface = targ;
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j = i;
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}
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switch(mips->encoding)
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{
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//32bit formats
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case PTI_RGBX8:
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qglTexImage2D(targface, j, GL_RGB, mips->mip[i].width, mips->mip[i].height, 0, GL_RGBA, GL_UNSIGNED_BYTE, mips->mip[i].data);
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break;
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case PTI_RGBA8:
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qglTexImage2D(targface, j, GL_RGBA, mips->mip[i].width, mips->mip[i].height, 0, GL_RGBA, GL_UNSIGNED_BYTE, mips->mip[i].data);
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break;
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case PTI_BGRX8:
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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);
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break;
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case PTI_BGRA8:
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default:
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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);
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break;
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case PTI_RGBA16F:
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qglTexImage2D(targface, j, GL_RGBA16F_ARB, mips->mip[i].width, mips->mip[i].height, 0, GL_RGBA, GL_UNSIGNED_BYTE, mips->mip[i].data);
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break;
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case PTI_RGBA32F:
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qglTexImage2D(targface, j, GL_RGBA32F_ARB, mips->mip[i].width, mips->mip[i].height, 0, GL_RGBA, GL_UNSIGNED_BYTE, mips->mip[i].data);
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break;
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//16bit formats
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case PTI_RGBA4444:
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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);
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break;
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case PTI_RGBA5551:
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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);
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break;
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case PTI_ARGB4444:
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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);
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break;
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case PTI_ARGB1555:
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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);
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break;
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case PTI_RGB565:
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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);
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break;
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//compressed formats
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case PTI_S3RGB1:
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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);
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break;
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case PTI_S3RGBA1:
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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);
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break;
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case PTI_S3RGBA3:
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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);
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break;
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case PTI_S3RGBA5:
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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);
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break;
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}
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if (mips->mip[i].needfree)
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Z_Free(mips->mip[i].data);
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}
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}
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if (!gl_config.gles) //make sure the texture is complete even if the mips are not.
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|
{
|
|
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
|