}
if (r_texture_fogattenuation)
{
- R_UpdateTexture(r_texture_fogattenuation, &data1[0][0], 0, 0, FOGWIDTH, 1);
- //R_UpdateTexture(r_texture_fogattenuation, &data2[0][0], 0, 0, FOGWIDTH, 1);
+ R_UpdateTexture(r_texture_fogattenuation, &data1[0][0], 0, 0, 0, FOGWIDTH, 1, 1);
+ //R_UpdateTexture(r_texture_fogattenuation, &data2[0][0], 0, 0, 0, FOGWIDTH, 1, 1);
}
else
{
{"#define USEALPHAKILL\n", " alphakill"},
{"#define USEREFLECTCUBE\n", " reflectcube"},
{"#define USENORMALMAPSCROLLBLEND\n", " normalmapscrollblend"},
+ {"#define USEBOUNCEGRID\n", " bouncegrid"},
};
// NOTE: MUST MATCH ORDER OF SHADERMODE_* ENUMS!
int tex_Texture_ScreenSpecular;
int tex_Texture_ReflectMask;
int tex_Texture_ReflectCube;
+ int tex_Texture_BounceGrid;
/// locations of detected uniforms in program object, or -1 if not found
int loc_Texture_First;
int loc_Texture_Second;
int loc_Texture_ScreenSpecular;
int loc_Texture_ReflectMask;
int loc_Texture_ReflectCube;
+ int loc_Texture_BounceGrid;
int loc_Alpha;
int loc_BloomBlur_Parameters;
int loc_ClientTime;
int loc_ShadowMapMatrix;
int loc_BloomColorSubtract;
int loc_NormalmapScrollBlend;
+ int loc_BounceGridMatrix;
+ int loc_BounceGridIntensity;
}
r_glsl_permutation_t;
p->loc_Texture_ScreenSpecular = qglGetUniformLocation(p->program, "Texture_ScreenSpecular");
p->loc_Texture_ReflectMask = qglGetUniformLocation(p->program, "Texture_ReflectMask");
p->loc_Texture_ReflectCube = qglGetUniformLocation(p->program, "Texture_ReflectCube");
+ p->loc_Texture_BounceGrid = qglGetUniformLocation(p->program, "Texture_BounceGrid");
p->loc_Alpha = qglGetUniformLocation(p->program, "Alpha");
p->loc_BloomBlur_Parameters = qglGetUniformLocation(p->program, "BloomBlur_Parameters");
p->loc_ClientTime = qglGetUniformLocation(p->program, "ClientTime");
p->loc_ShadowMapMatrix = qglGetUniformLocation(p->program, "ShadowMapMatrix");
p->loc_BloomColorSubtract = qglGetUniformLocation(p->program, "BloomColorSubtract");
p->loc_NormalmapScrollBlend = qglGetUniformLocation(p->program, "NormalmapScrollBlend");
+ p->loc_BounceGridMatrix = qglGetUniformLocation(p->program, "BounceGridMatrix");
+ p->loc_BounceGridIntensity = qglGetUniformLocation(p->program, "BounceGridIntensity");
// initialize the samplers to refer to the texture units we use
p->tex_Texture_First = -1;
p->tex_Texture_Second = -1;
p->tex_Texture_ScreenSpecular = -1;
p->tex_Texture_ReflectMask = -1;
p->tex_Texture_ReflectCube = -1;
+ p->tex_Texture_BounceGrid = -1;
sampler = 0;
if (p->loc_Texture_First >= 0) {p->tex_Texture_First = sampler;qglUniform1i(p->loc_Texture_First , sampler);sampler++;}
if (p->loc_Texture_Second >= 0) {p->tex_Texture_Second = sampler;qglUniform1i(p->loc_Texture_Second , sampler);sampler++;}
if (p->loc_Texture_ScreenSpecular >= 0) {p->tex_Texture_ScreenSpecular = sampler;qglUniform1i(p->loc_Texture_ScreenSpecular , sampler);sampler++;}
if (p->loc_Texture_ReflectMask >= 0) {p->tex_Texture_ReflectMask = sampler;qglUniform1i(p->loc_Texture_ReflectMask , sampler);sampler++;}
if (p->loc_Texture_ReflectCube >= 0) {p->tex_Texture_ReflectCube = sampler;qglUniform1i(p->loc_Texture_ReflectCube , sampler);sampler++;}
+ if (p->loc_Texture_BounceGrid >= 0) {p->tex_Texture_BounceGrid = sampler;qglUniform1i(p->loc_Texture_BounceGrid , sampler);sampler++;}
CHECKGLERROR
Con_DPrintf("^5GLSL shader %s compiled (%i textures).\n", permutationname, sampler);
}
static float dummy_colormod[3] = {1, 1, 1};
float *colormod = rsurface.colormod;
float m16f[16];
+ matrix4x4_t tempmatrix;
r_waterstate_waterplane_t *waterplane = (r_waterstate_waterplane_t *)surfacewaterplane;
if (rsurface.texture->currentmaterialflags & MATERIALFLAG_ALPHATEST)
permutation |= SHADERPERMUTATION_ALPHAKILL;
permutation |= SHADERPERMUTATION_REFLECTION;
if (rsurface.texture->reflectmasktexture)
permutation |= SHADERPERMUTATION_REFLECTCUBE;
+ if (r_shadow_bouncegridtexture)
+ permutation |= SHADERPERMUTATION_BOUNCEGRID;
GL_BlendFunc(rsurface.texture->currentlayers[0].blendfunc1, rsurface.texture->currentlayers[0].blendfunc2);
allow_colormod = R_BlendFuncAllowsColormod(rsurface.texture->currentlayers[0].blendfunc1, rsurface.texture->currentlayers[0].blendfunc2);
}
permutation |= SHADERPERMUTATION_DEFERREDLIGHTMAP;
if (rsurface.texture->reflectmasktexture)
permutation |= SHADERPERMUTATION_REFLECTCUBE;
+ if (r_shadow_bouncegridtexture)
+ permutation |= SHADERPERMUTATION_BOUNCEGRID;
GL_BlendFunc(rsurface.texture->currentlayers[0].blendfunc1, rsurface.texture->currentlayers[0].blendfunc2);
allow_colormod = R_BlendFuncAllowsColormod(rsurface.texture->currentlayers[0].blendfunc1, rsurface.texture->currentlayers[0].blendfunc2);
}
permutation |= SHADERPERMUTATION_DEFERREDLIGHTMAP;
if (rsurface.texture->reflectmasktexture)
permutation |= SHADERPERMUTATION_REFLECTCUBE;
+ if (r_shadow_bouncegridtexture)
+ permutation |= SHADERPERMUTATION_BOUNCEGRID;
GL_BlendFunc(rsurface.texture->currentlayers[0].blendfunc1, rsurface.texture->currentlayers[0].blendfunc2);
allow_colormod = R_BlendFuncAllowsColormod(rsurface.texture->currentlayers[0].blendfunc1, rsurface.texture->currentlayers[0].blendfunc2);
}
// ordinary vertex coloring (q3bsp)
mode = SHADERMODE_VERTEXCOLOR;
}
+ if (r_shadow_bouncegridtexture)
+ permutation |= SHADERPERMUTATION_BOUNCEGRID;
GL_BlendFunc(rsurface.texture->currentlayers[0].blendfunc1, rsurface.texture->currentlayers[0].blendfunc2);
allow_colormod = R_BlendFuncAllowsColormod(rsurface.texture->currentlayers[0].blendfunc1, rsurface.texture->currentlayers[0].blendfunc2);
}
if (r_glsl_permutation->loc_OffsetMapping_Scale >= 0) qglUniform1f(r_glsl_permutation->loc_OffsetMapping_Scale, r_glsl_offsetmapping_scale.value*rsurface.texture->offsetscale);
if (r_glsl_permutation->loc_ScreenToDepth >= 0) qglUniform2f(r_glsl_permutation->loc_ScreenToDepth, r_refdef.view.viewport.screentodepth[0], r_refdef.view.viewport.screentodepth[1]);
if (r_glsl_permutation->loc_PixelToScreenTexCoord >= 0) qglUniform2f(r_glsl_permutation->loc_PixelToScreenTexCoord, 1.0f/vid.width, 1.0f/vid.height);
+ if (r_glsl_permutation->loc_BounceGridMatrix >= 0) {Matrix4x4_Concat(&tempmatrix, &r_shadow_bouncegridmatrix, &rsurface.matrix);Matrix4x4_ToArrayFloatGL(&tempmatrix, m16f);qglUniformMatrix4fv(r_glsl_permutation->loc_BounceGridMatrix, 1, false, m16f);}
+ if (r_glsl_permutation->loc_BounceGridIntensity >= 0) qglUniform1f(r_glsl_permutation->loc_BounceGridIntensity, r_shadow_bouncegridintensity);
if (r_glsl_permutation->tex_Texture_First >= 0) R_Mesh_TexBind(r_glsl_permutation->tex_Texture_First , r_texture_white );
if (r_glsl_permutation->tex_Texture_Second >= 0) R_Mesh_TexBind(r_glsl_permutation->tex_Texture_Second , r_texture_white );
if (r_glsl_permutation->tex_Texture_CubeProjection >= 0) R_Mesh_TexBind(r_glsl_permutation->tex_Texture_CubeProjection , r_shadow_shadowmapvsdcttexture );
}
}
+ if (r_glsl_permutation->tex_Texture_BounceGrid >= 0) R_Mesh_TexBind(r_glsl_permutation->tex_Texture_BounceGrid, r_shadow_bouncegridtexture);
CHECKGLERROR
break;
case RENDERPATH_GL13:
}
if (r_texture_gammaramps)
{
- R_UpdateTexture(r_texture_gammaramps, &rampbgr[0][0], 0, 0, RAMPWIDTH, 1);
+ R_UpdateTexture(r_texture_gammaramps, &rampbgr[0][0], 0, 0, 0, RAMPWIDTH, 1, 1);
}
else
{
cvar_t r_shadow_particletrace_bounceintensity = {CVAR_SAVE, "r_shadow_particletrace_bounceintensity", "1", "amount of energy carried over after each bounce"};
cvar_t r_shadow_particletrace_particlespacing = {CVAR_SAVE, "r_shadow_particletrace_particlespacing", "0.25", "overlap setting in terms of particle size, this affects how many particles are used"};
cvar_t r_shadow_particletrace_updatepercentage = {CVAR_SAVE, "r_shadow_particletrace_updatepercentage", "0.01", "update this fraction of the particles of a light each frame (0 = best performance)"};
+cvar_t r_shadow_bouncegrid = {CVAR_SAVE, "r_shadow_bouncegrid", "0", "perform particle tracing for indirect lighting (Global Illumination / radiosity) using a 3D texture covering the scene, requires r_shadow_realtime_world 1"};
+cvar_t r_shadow_bouncegrid_dlightparticlemultiplier = {CVAR_SAVE, "r_shadow_bouncegrid_dlightparticlemultiplier", "0", "if set to a high value like 16 this can make dlights look great, but 0 is recommended for performance reasons"};
+cvar_t r_shadow_bouncegrid_hitmodels = {CVAR_SAVE, "r_shadow_bouncegrid_hitmodels", "0", "enables hitting character model geometry (SLOW)"};
+cvar_t r_shadow_bouncegrid_intensity = {CVAR_SAVE, "r_shadow_bouncegrid_intensity", "1", "overall brightness of bouncegrid texture"};
+cvar_t r_shadow_bouncegrid_lightradiusscale = {CVAR_SAVE, "r_shadow_bouncegrid_lightradiusscale", "2", "particles stop at this fraction of light radius (can be more than 1)"};
+cvar_t r_shadow_bouncegrid_maxbounce = {CVAR_SAVE, "r_shadow_bouncegrid_maxbounce", "16", "maximum number of bounces for a particle (minimum is 1)"};
+cvar_t r_shadow_bouncegrid_particlebounceintensity = {CVAR_SAVE, "r_shadow_bouncegrid_particlebounceintensity", "1", "amount of energy carried over after each bounce"};
+cvar_t r_shadow_bouncegrid_particleintensity = {CVAR_SAVE, "r_shadow_bouncegrid_particleintensity", "16", "brightness of particles contributing to bouncegrid texture"};
+cvar_t r_shadow_bouncegrid_particlespacing = {CVAR_SAVE, "r_shadow_bouncegrid_particlespacing", "32", "emit one particle per this many units (squared) of radius (squared)"};
+cvar_t r_shadow_bouncegrid_spacingx = {CVAR_SAVE, "r_shadow_bouncegrid_spacingx", "64", "unit size of bouncegrid pixel on X axis"};
+cvar_t r_shadow_bouncegrid_spacingy = {CVAR_SAVE, "r_shadow_bouncegrid_spacingy", "64", "unit size of bouncegrid pixel on Y axis"};
+cvar_t r_shadow_bouncegrid_spacingz = {CVAR_SAVE, "r_shadow_bouncegrid_spacingz", "64", "unit size of bouncegrid pixel on Z axis"};
+cvar_t r_shadow_bouncegrid_stablerandom = {CVAR_SAVE, "r_shadow_bouncegrid_stablerandom", "1", "make particle distribution consistent from frame to frame"};
+cvar_t r_shadow_bouncegrid_updateinterval = {CVAR_SAVE, "r_shadow_bouncegrid_updateinterval", "0", "update bouncegrid texture once per this many seconds, useful values are 0, 0.05, or 1000000"};
+cvar_t r_shadow_bouncegrid_x = {CVAR_SAVE, "r_shadow_bouncegrid_x", "128", "maximum texture size of bouncegrid on X axis"};
+cvar_t r_shadow_bouncegrid_y = {CVAR_SAVE, "r_shadow_bouncegrid_y", "128", "maximum texture size of bouncegrid on Y axis"};
+cvar_t r_shadow_bouncegrid_z = {CVAR_SAVE, "r_shadow_bouncegrid_z", "64", "maximum texture size of bouncegrid on Z axis"};
cvar_t r_coronas = {CVAR_SAVE, "r_coronas", "1", "brightness of corona flare effects around certain lights, 0 disables corona effects"};
cvar_t r_coronas_occlusionsizescale = {CVAR_SAVE, "r_coronas_occlusionsizescale", "0.1", "size of light source for corona occlusion checksum the proportion of hidden pixels controls corona intensity"};
cvar_t r_coronas_occlusionquery = {CVAR_SAVE, "r_coronas_occlusionquery", "1", "use GL_ARB_occlusion_query extension if supported (fades coronas according to visibility)"};
cvar_t r_editlights_cursorgrid = {0, "r_editlights_cursorgrid", "4", "snaps cursor to this grid size"};
cvar_t r_editlights_quakelightsizescale = {CVAR_SAVE, "r_editlights_quakelightsizescale", "1", "changes size of light entities loaded from a map"};
+rtexture_t *r_shadow_bouncegridtexture;
+matrix4x4_t r_shadow_bouncegridmatrix;
+vec_t r_shadow_bouncegridintensity;
+static double r_shadow_bouncegridtime;
+static int r_shadow_bouncegridresolution[3];
+
// note the table actually includes one more value, just to avoid the need to clamp the distance index due to minor math error
#define ATTENTABLESIZE 256
// 1D gradient, 2D circle and 3D sphere attenuation textures
void r_shadow_start(void)
{
// allocate vertex processing arrays
+ r_shadow_bouncegridtexture = NULL;
r_shadow_attenuationgradienttexture = NULL;
r_shadow_attenuation2dtexture = NULL;
r_shadow_attenuation3dtexture = NULL;
r_shadow_prepass_width = r_shadow_prepass_height = 0;
CHECKGLERROR
+ r_shadow_bouncegridtexture = NULL;
r_shadow_attenuationgradienttexture = NULL;
r_shadow_attenuation2dtexture = NULL;
r_shadow_attenuation3dtexture = NULL;
void r_shadow_newmap(void)
{
+ if (r_shadow_bouncegridtexture) R_FreeTexture(r_shadow_bouncegridtexture);r_shadow_bouncegridtexture = NULL;
if (r_shadow_lightcorona) R_SkinFrame_MarkUsed(r_shadow_lightcorona);
if (r_editlights_sprcursor) R_SkinFrame_MarkUsed(r_editlights_sprcursor);
if (r_editlights_sprlight) R_SkinFrame_MarkUsed(r_editlights_sprlight);
Cvar_RegisterVariable(&r_shadow_particletrace_bounceintensity);
Cvar_RegisterVariable(&r_shadow_particletrace_particlespacing);
Cvar_RegisterVariable(&r_shadow_particletrace_updatepercentage);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_dlightparticlemultiplier);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_hitmodels);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_intensity);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_lightradiusscale);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_maxbounce);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_particlebounceintensity);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_particleintensity);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_particlespacing);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_spacingx);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_spacingy);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_spacingz);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_stablerandom);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_updateinterval);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_x);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_y);
+ Cvar_RegisterVariable(&r_shadow_bouncegrid_z);
Cvar_RegisterVariable(&r_coronas);
Cvar_RegisterVariable(&r_coronas_occlusionsizescale);
Cvar_RegisterVariable(&r_coronas_occlusionquery);
R_Mesh_Draw(0, 8, 0, 12, NULL, NULL, 0, bboxelements, NULL, 0);
}
+static void R_Shadow_UpdateBounceGridTexture(void)
+{
+#define MAXBOUNCEGRIDPARTICLESPERLIGHT 1048576
+ dlight_t *light;
+ int flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
+ int bouncecount;
+ int bouncelimit;
+ int c[3];
+ int hitsupercontentsmask;
+ int maxbounce;
+ int numpixels;
+ int resolution[3];
+ int shootparticles;
+ int shotparticles;
+ int tex[3];
+ trace_t cliptrace;
+ unsigned char *pixel;
+ unsigned char *pixels;
+ unsigned int lightindex;
+ unsigned int range;
+ unsigned int range1;
+ unsigned int range2;
+ unsigned int seed = (unsigned int)(realtime * 1000.0f);
+ vec3_t shotcolor;
+ vec3_t baseshotcolor;
+ vec3_t clipend;
+ vec3_t clipstart;
+ vec3_t ispacing;
+ vec3_t maxs;
+ vec3_t mins;
+ vec3_t size;
+ vec3_t spacing;
+ vec3_t lightcolor;
+ vec_t radius;
+ vec_t s;
+ vec_t lightintensity;
+ float m[16];
+ qboolean isstatic = r_shadow_bouncegrid_updateinterval.value > 1.0f;
+ rtlight_t *rtlight;
+ if (!r_shadow_bouncegrid.integer || !vid.support.ext_texture_3d)
+ {
+ if (r_shadow_bouncegridtexture)
+ {
+ R_FreeTexture(r_shadow_bouncegridtexture);
+ r_shadow_bouncegridtexture = NULL;
+ }
+ return;
+ }
+ if (r_refdef.scene.worldmodel)
+ {
+ VectorSet(spacing, bound(1, r_shadow_bouncegrid_spacingx.value, 512), bound(1, r_shadow_bouncegrid_spacingy.value, 512), bound(1, r_shadow_bouncegrid_spacingz.value, 512));
+ VectorMA(r_refdef.scene.worldmodel->normalmins, -2.0f, spacing, mins);
+ VectorMA(r_refdef.scene.worldmodel->normalmaxs, 2.0f, spacing, maxs);
+ VectorSubtract(maxs, mins, size);
+ resolution[0] = (int)floor(size[0] / spacing[0] + 0.5f);
+ resolution[1] = (int)floor(size[1] / spacing[1] + 0.5f);
+ resolution[2] = (int)floor(size[2] / spacing[2] + 0.5f);
+ resolution[0] = min(resolution[0], bound(4, r_shadow_bouncegrid_x.integer, (int)vid.maxtexturesize_3d));
+ resolution[1] = min(resolution[1], bound(4, r_shadow_bouncegrid_y.integer, (int)vid.maxtexturesize_3d));
+ resolution[2] = min(resolution[2], bound(4, r_shadow_bouncegrid_z.integer, (int)vid.maxtexturesize_3d));
+ spacing[0] = size[0] / resolution[0];
+ spacing[1] = size[1] / resolution[1];
+ spacing[2] = size[2] / resolution[2];
+ ispacing[0] = 1.0f / spacing[0];
+ ispacing[1] = 1.0f / spacing[1];
+ ispacing[2] = 1.0f / spacing[2];
+ }
+ else
+ {
+ VectorSet(resolution, bound(4, r_shadow_bouncegrid_x.integer, (int)vid.maxtexturesize_3d), bound(4, r_shadow_bouncegrid_y.integer, (int)vid.maxtexturesize_3d), bound(4, r_shadow_bouncegrid_z.integer, (int)vid.maxtexturesize_3d));
+ VectorSet(spacing, bound(1, r_shadow_bouncegrid_spacingx.value, 512), bound(1, r_shadow_bouncegrid_spacingy.value, 512), bound(1, r_shadow_bouncegrid_spacingz.value, 512));
+ VectorMultiply(resolution, spacing, size);
+ ispacing[0] = 1.0f / spacing[0];
+ ispacing[1] = 1.0f / spacing[1];
+ ispacing[2] = 1.0f / spacing[2];
+ mins[0] = floor(r_refdef.view.origin[0] * ispacing[0] + 0.5f) * spacing[0] - 0.5f * size[0];
+ mins[1] = floor(r_refdef.view.origin[1] * ispacing[1] + 0.5f) * spacing[1] - 0.5f * size[1];
+ mins[2] = floor(r_refdef.view.origin[2] * ispacing[2] + 0.5f) * spacing[2] - 0.5f * size[2];
+ VectorAdd(mins, size, maxs);
+ }
+ memset(m, 0, sizeof(m));
+ m[0] = 1.0f / size[0];
+ m[3] = -mins[0] * m[0];
+ m[5] = 1.0f / size[1];
+ m[7] = -mins[1] * m[5];
+ m[10] = 1.0f / size[2];
+ m[11] = -mins[2] * m[10];
+ m[15] = 1.0f;
+ Matrix4x4_FromArrayFloatD3D(&r_shadow_bouncegridmatrix, m);
+ r_shadow_bouncegridintensity = r_shadow_bouncegrid_intensity.value;
+ if (r_shadow_bouncegridtexture && realtime < r_shadow_bouncegridtime + r_shadow_bouncegrid_updateinterval.value && resolution[0] == r_shadow_bouncegridresolution[0] && resolution[1] == r_shadow_bouncegridresolution[1] && resolution[2] == r_shadow_bouncegridresolution[2])
+ return;
+ numpixels = resolution[0]*resolution[1]*resolution[2];
+ // allocate pixels for this update...
+ pixels = Mem_Alloc(r_main_mempool, numpixels * sizeof(unsigned char[4]));
+ // figure out what we want to interact with
+ if (r_shadow_bouncegrid_hitmodels.integer)
+ hitsupercontentsmask = SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_LIQUIDSMASK;
+ else
+ hitsupercontentsmask = SUPERCONTENTS_SOLID | SUPERCONTENTS_LIQUIDSMASK;
+ // iterate world rtlights
+ range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
+ range1 = isstatic ? 0 : r_refdef.scene.numlights;
+ range2 = range + range1;
+ for (lightindex = 0;lightindex < range2;lightindex++)
+ {
+ if (isstatic)
+ {
+ light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
+ if (!light || !(light->flags & flag))
+ continue;
+ rtlight = &light->rtlight;
+ // when static, we skip styled lights because they tend to change...
+ if (rtlight->style > 0)
+ continue;
+ VectorScale(rtlight->color, (rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale) * (rtlight->style >= 0 ? r_refdef.scene.rtlightstylevalue[rtlight->style] : 1), lightcolor);
+ }
+ else
+ {
+ if (lightindex < range)
+ {
+ light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
+ rtlight = &light->rtlight;
+ }
+ else
+ rtlight = r_refdef.scene.lights[lightindex - range];
+ // draw only visible lights (major speedup)
+ if (!rtlight->draw)
+ continue;
+ VectorScale(rtlight->currentcolor, rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale, lightcolor);
+ }
+ if (!VectorLength2(lightcolor))
+ continue;
+ // shoot particles from this light
+ // use a calculation for the number of particles that will not
+ // vary with lightstyle, otherwise we get randomized particle
+ // distribution, the seeded random is only consistent for a
+ // consistent number of particles on this light...
+ radius = rtlight->radius * bound(0.0001f, r_shadow_bouncegrid_lightradiusscale.value, 1024.0f);
+ s = rtlight->radius / bound(1.0f, r_shadow_bouncegrid_particlespacing.value, 1048576.0f);
+ lightintensity = VectorLength(rtlight->color) * rtlight->ambientscale + rtlight->diffusescale + rtlight->specularscale;
+ if (lightindex >= range)
+ lightintensity *= r_shadow_bouncegrid_dlightparticlemultiplier.value;
+ shootparticles = (int)bound(0, lightintensity * s *s, MAXBOUNCEGRIDPARTICLESPERLIGHT);
+ if (!shootparticles)
+ continue;
+ s = 255.0f * r_shadow_bouncegrid_particleintensity.value / shootparticles;
+ VectorScale(lightcolor, s, baseshotcolor);
+ maxbounce = bound(1, r_shadow_bouncegrid_maxbounce.integer, 16);
+ for (shotparticles = 0;shotparticles < shootparticles;shotparticles++)
+ {
+ if (r_shadow_bouncegrid_stablerandom.integer > 0)
+ seed = lightindex * 11937 + shotparticles;
+ VectorCopy(baseshotcolor, shotcolor);
+ VectorCopy(rtlight->shadoworigin, clipstart);
+ if (r_shadow_bouncegrid_stablerandom.integer < 0)
+ VectorRandom(clipend);
+ else
+ VectorCheeseRandom(clipend);
+ VectorMA(clipstart, radius, clipend, clipend);
+ bouncelimit = 1 + (rtlight->particlecache_updateparticle % maxbounce);
+ for (bouncecount = 0;;bouncecount++)
+ {
+ cliptrace = CL_TraceLine(clipstart, clipend, r_shadow_bouncegrid_hitmodels.integer ? MOVE_HITMODEL : MOVE_NOMONSTERS, NULL, hitsupercontentsmask, true, false, NULL, true);
+ //Collision_ClipLineToWorld(&cliptrace, cl.worldmodel, clipstart, clipend, hitsupercontentsmask);
+ if (cliptrace.fraction >= 1.0f)
+ break;
+ if (VectorLength2(shotcolor) < 1.0f)
+ break;
+ if (bouncecount > 0)
+ {
+ // figure out which texture pixel this is in
+ tex[0] = (int)((cliptrace.endpos[0] - mins[0]) * ispacing[0]);
+ tex[1] = (int)((cliptrace.endpos[1] - mins[1]) * ispacing[1]);
+ tex[2] = (int)((cliptrace.endpos[2] - mins[2]) * ispacing[2]);
+ if (tex[0] >= 1 && tex[1] >= 1 && tex[2] >= 1 && tex[0] < resolution[0] - 1 && tex[1] < resolution[1] - 1 && tex[2] < resolution[2] - 1)
+ {
+ // it is within bounds...
+ pixel = pixels + 4 * ((tex[2]*resolution[1]+tex[1])*resolution[0]+tex[0]);
+ // add to the pixel color
+ c[0] = pixel[0] + (int)shotcolor[2];
+ c[1] = pixel[1] + (int)shotcolor[1];
+ c[2] = pixel[2] + (int)shotcolor[0];
+ pixel[0] = (unsigned char)min(c[0], 255);
+ pixel[1] = (unsigned char)min(c[1], 255);
+ pixel[2] = (unsigned char)min(c[2], 255);
+ pixel[3] = 255;
+ }
+ }
+ if (bouncecount >= bouncelimit)
+ break;
+ // scale down shot color by bounce intensity and texture color
+ VectorScale(shotcolor, r_shadow_bouncegrid_particlebounceintensity.value, shotcolor);
+ if (cliptrace.hittexture && cliptrace.hittexture->currentskinframe)
+ VectorMultiply(shotcolor, rsurface.texture->currentskinframe->avgcolor, shotcolor);
+ // reflect the remaining portion of the line across plane normal
+ //VectorSubtract(clipend, cliptrace.endpos, clipdiff);
+ //VectorReflect(clipdiff, 1.0, cliptrace.plane.normal, clipend);
+ // random direction, primarily along plane normal
+ s = VectorDistance(cliptrace.endpos, clipend);
+ if (r_shadow_bouncegrid_stablerandom.integer < 0)
+ VectorRandom(clipend);
+ else
+ VectorCheeseRandom(clipend);
+ VectorMA(cliptrace.plane.normal, 0.95f, clipend, clipend);
+ VectorNormalize(clipend);
+ VectorScale(clipend, s, clipend);
+ // calculate the new line start and end
+ VectorCopy(cliptrace.endpos, clipstart);
+ VectorAdd(clipstart, clipend, clipend);
+ }
+ }
+ }
+ if (r_shadow_bouncegridtexture && r_shadow_bouncegridresolution[0] == resolution[0] && r_shadow_bouncegridresolution[1] == resolution[1] && r_shadow_bouncegridresolution[2] == resolution[2])
+ R_UpdateTexture(r_shadow_bouncegridtexture, pixels, 0, 0, 0, resolution[0], resolution[1], resolution[2]);
+ else
+ {
+ VectorCopy(resolution, r_shadow_bouncegridresolution);
+ if (r_shadow_bouncegridtexture)
+ R_FreeTexture(r_shadow_bouncegridtexture);
+ r_shadow_bouncegridtexture = R_LoadTexture3D(r_shadow_texturepool, "bouncegrid", resolution[0], resolution[1], resolution[2], pixels, TEXTYPE_BGRA, TEXF_CLAMP | TEXF_ALPHA | TEXF_FORCELINEAR, 0, NULL);
+ }
+ Mem_Free(pixels);
+ r_shadow_bouncegridtime = realtime;
+}
+
#define MAXPARTICLESPERLIGHT 262144
#define MAXLIGHTSPERDRAW 1024
if (r_editlights.integer)
R_Shadow_DrawLightSprites();
+
+ R_Shadow_UpdateBounceGridTexture();
}
void R_Shadow_DrawLights(void)
projects / xonotic / darkplaces.git / commitdiff