cvar_t r_shadow_polygonoffset = {0, "r_shadow_polygonoffset", "1", "how much to push shadow volumes into the distance when rendering, to reduce chances of zfighting artifacts (should not be less than 0)"};
cvar_t r_shadow_texture3d = {0, "r_shadow_texture3d", "1", "use 3D voxel textures for spherical attenuation rather than cylindrical (does not affect r_glsl lighting)"};
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 checksm 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 gl_flashblend = {CVAR_SAVE, "gl_flashblend", "0", "render bright coronas for dynamic lights instead of actual lighting, fast but ugly"};
cvar_t gl_ext_separatestencil = {0, "gl_ext_separatestencil", "1", "make use of OpenGL 2.0 glStencilOpSeparate or GL_ATI_separate_stencil extension"};
cvar_t gl_ext_stenciltwoside = {0, "gl_ext_stenciltwoside", "1", "make use of GL_EXT_stenciltwoside extension (NVIDIA only)"};
Cvar_RegisterVariable(&r_shadow_polygonoffset);
Cvar_RegisterVariable(&r_shadow_texture3d);
Cvar_RegisterVariable(&r_coronas);
+ Cvar_RegisterVariable(&r_coronas_occlusionsizescale);
+ Cvar_RegisterVariable(&r_coronas_occlusionquery);
Cvar_RegisterVariable(&gl_flashblend);
Cvar_RegisterVariable(&gl_ext_separatestencil);
Cvar_RegisterVariable(&gl_ext_stenciltwoside);
else
VectorClear(projectvector);
- if (maxvertexupdate < innumvertices)
- {
- maxvertexupdate = innumvertices;
- if (vertexupdate)
- Mem_Free(vertexupdate);
- if (vertexremap)
- Mem_Free(vertexremap);
- vertexupdate = (int *)Mem_Alloc(r_main_mempool, maxvertexupdate * sizeof(int));
- vertexremap = (int *)Mem_Alloc(r_main_mempool, maxvertexupdate * sizeof(int));
- vertexupdatenum = 0;
- }
- vertexupdatenum++;
- if (vertexupdatenum == 0)
- {
- vertexupdatenum = 1;
- memset(vertexupdate, 0, maxvertexupdate * sizeof(int));
- memset(vertexremap, 0, maxvertexupdate * sizeof(int));
- }
-
- for (i = 0;i < numshadowmarktris;i++)
- shadowmark[shadowmarktris[i]] = shadowmarkcount;
-
// create the vertices
if (projectdirection)
{
}
}
-static void R_Shadow_RenderVolume(int numvertices, int numtriangles, const float *vertex3f, const int *element3i)
-{
- if (r_shadow_compilingrtlight)
- {
- // if we're compiling an rtlight, capture the mesh
- Mod_ShadowMesh_AddMesh(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, NULL, NULL, NULL, vertex3f, NULL, NULL, NULL, NULL, numtriangles, element3i);
- return;
- }
- r_refdef.stats.lights_shadowtriangles += numtriangles;
- CHECKGLERROR
- R_Mesh_VertexPointer(vertex3f, 0, 0);
- GL_LockArrays(0, numvertices);
- if (r_shadow_rendermode == R_SHADOW_RENDERMODE_STENCIL)
- {
- // decrement stencil if backface is behind depthbuffer
- GL_CullFace(r_refdef.view.cullface_front);
- qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);CHECKGLERROR
- R_Mesh_Draw(0, numvertices, 0, numtriangles, element3i, NULL, 0, 0);
- // increment stencil if frontface is behind depthbuffer
- GL_CullFace(r_refdef.view.cullface_back);
- qglStencilOp(GL_KEEP, GL_INCR, GL_KEEP);CHECKGLERROR
- }
- R_Mesh_Draw(0, numvertices, 0, numtriangles, element3i, NULL, 0, 0);
- GL_LockArrays(0, 0);
- CHECKGLERROR
-}
-
-void R_Shadow_VolumeFromList(int numverts, int numtris, const float *invertex3f, const int *elements, const int *neighbors, const vec3_t projectorigin, const vec3_t projectdirection, float projectdistance, int nummarktris, const int *marktris)
+void R_Shadow_VolumeFromList(int numverts, int numtris, const float *invertex3f, const int *elements, const int *neighbors, const vec3_t projectorigin, const vec3_t projectdirection, float projectdistance, int nummarktris, const int *marktris, vec3_t trismins, vec3_t trismaxs)
{
- int tris, outverts;
+ int i, tris, outverts;
if (projectdistance < 0.1)
{
Con_Printf("R_Shadow_Volume: projectdistance %f\n", projectdistance);
// make sure shadowelements is big enough for this volume
if (maxshadowtriangles < nummarktris || maxshadowvertices < numverts)
R_Shadow_ResizeShadowArrays((numverts + 255) & ~255, (nummarktris + 255) & ~255);
- tris = R_Shadow_ConstructShadowVolume(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
- r_refdef.stats.lights_dynamicshadowtriangles += tris;
- R_Shadow_RenderVolume(outverts, tris, shadowvertex3f, shadowelements);
+
+ if (maxvertexupdate < numverts)
+ {
+ maxvertexupdate = numverts;
+ if (vertexupdate)
+ Mem_Free(vertexupdate);
+ if (vertexremap)
+ Mem_Free(vertexremap);
+ vertexupdate = (int *)Mem_Alloc(r_main_mempool, maxvertexupdate * sizeof(int));
+ vertexremap = (int *)Mem_Alloc(r_main_mempool, maxvertexupdate * sizeof(int));
+ vertexupdatenum = 0;
+ }
+ vertexupdatenum++;
+ if (vertexupdatenum == 0)
+ {
+ vertexupdatenum = 1;
+ memset(vertexupdate, 0, maxvertexupdate * sizeof(int));
+ memset(vertexremap, 0, maxvertexupdate * sizeof(int));
+ }
+
+ for (i = 0;i < nummarktris;i++)
+ shadowmark[marktris[i]] = shadowmarkcount;
+
+ if (r_shadow_compilingrtlight)
+ {
+ // if we're compiling an rtlight, capture the mesh
+ tris = R_Shadow_ConstructShadowVolume(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
+ Mod_ShadowMesh_AddMesh(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, NULL, NULL, NULL, shadowvertex3f, NULL, NULL, NULL, NULL, tris, shadowelements);
+ }
+ else
+ {
+ tris = R_Shadow_ConstructShadowVolume(numverts, numtris, elements, neighbors, invertex3f, &outverts, shadowelements, shadowvertex3f, projectorigin, projectdirection, projectdistance, nummarktris, marktris);
+ r_refdef.stats.lights_dynamicshadowtriangles += tris;
+ r_refdef.stats.lights_shadowtriangles += tris;
+ CHECKGLERROR
+ R_Mesh_VertexPointer(shadowvertex3f, 0, 0);
+ GL_LockArrays(0, outverts);
+ if (r_shadow_rendermode == R_SHADOW_RENDERMODE_STENCIL)
+ {
+ // decrement stencil if backface is behind depthbuffer
+ GL_CullFace(r_refdef.view.cullface_front);
+ qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);CHECKGLERROR
+ R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, 0);
+ // increment stencil if frontface is behind depthbuffer
+ GL_CullFace(r_refdef.view.cullface_back);
+ qglStencilOp(GL_KEEP, GL_INCR, GL_KEEP);CHECKGLERROR
+ }
+ R_Mesh_Draw(0, outverts, 0, tris, shadowelements, NULL, 0, 0);
+ GL_LockArrays(0, 0);
+ CHECKGLERROR
+ }
}
static void R_Shadow_MakeTextures_MakeCorona(void)
R_SetupGenericShader(false);
}
-void R_Shadow_RenderMode_StencilShadowVolumes(qboolean clearstencil)
+void R_Shadow_ClearStencil(void)
+{
+ CHECKGLERROR
+ GL_Clear(GL_STENCIL_BUFFER_BIT);
+ r_refdef.stats.lights_clears++;
+}
+
+void R_Shadow_RenderMode_StencilShadowVolumes(void)
{
CHECKGLERROR
R_Shadow_RenderMode_Reset();
qglStencilMask(~0);CHECKGLERROR
qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);CHECKGLERROR
}
- if (clearstencil)
- GL_Clear(GL_STENCIL_BUFFER_BIT);
- r_refdef.stats.lights_clears++;
}
void R_Shadow_RenderMode_Lighting(qboolean stenciltest, qboolean transparent)
if (CHECKPVSBIT(trispvs, t))
shadowmarklist[numshadowmark++] = t;
}
- R_Shadow_VolumeFromList(r_refdef.scene.worldmodel->brush.shadowmesh->numverts, r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles, r_refdef.scene.worldmodel->brush.shadowmesh->vertex3f, r_refdef.scene.worldmodel->brush.shadowmesh->element3i, r_refdef.scene.worldmodel->brush.shadowmesh->neighbor3i, rsurface.rtlight->shadoworigin, NULL, rsurface.rtlight->radius + r_refdef.scene.worldmodel->radius*2 + r_shadow_projectdistance.value, numshadowmark, shadowmarklist);
+ R_Shadow_VolumeFromList(r_refdef.scene.worldmodel->brush.shadowmesh->numverts, r_refdef.scene.worldmodel->brush.shadowmesh->numtriangles, r_refdef.scene.worldmodel->brush.shadowmesh->vertex3f, r_refdef.scene.worldmodel->brush.shadowmesh->element3i, r_refdef.scene.worldmodel->brush.shadowmesh->neighbor3i, rsurface.rtlight->shadoworigin, NULL, rsurface.rtlight->radius + r_refdef.scene.worldmodel->radius*2 + r_shadow_projectdistance.value, numshadowmark, shadowmarklist, r_refdef.scene.worldmodel->normalmins, r_refdef.scene.worldmodel->normalmaxs);
}
else if (numsurfaces)
r_refdef.scene.worldmodel->DrawShadowVolume(r_refdef.scene.worldentity, rsurface.rtlight->shadoworigin, NULL, rsurface.rtlight->radius, numsurfaces, surfacelist, rsurface.rtlight_cullmins, rsurface.rtlight_cullmaxs);
{
// draw stencil shadow volumes to mask off pixels that are in shadow
// so that they won't receive lighting
- R_Shadow_RenderMode_StencilShadowVolumes(true);
+ R_Shadow_ClearStencil();
+ R_Shadow_RenderMode_StencilShadowVolumes();
if (numsurfaces)
R_Shadow_DrawWorldShadow(numsurfaces, surfacelist, shadowtrispvs);
for (i = 0;i < numshadowentities;i++)
R_Shadow_DrawEntityLight(lightentities_noselfshadow[i]);
}
- R_Shadow_RenderMode_StencilShadowVolumes(false);
+ R_Shadow_RenderMode_StencilShadowVolumes();
}
for (i = 0;i < numshadowentities_noselfshadow;i++)
R_Shadow_DrawEntityShadow(shadowentities_noselfshadow[i]);
else
r_shadow_shadowingrendermode = R_SHADOW_RENDERMODE_STENCIL;
- R_Shadow_RenderMode_StencilShadowVolumes(true);
+ R_Shadow_ClearStencil();
+ R_Shadow_RenderMode_StencilShadowVolumes();
for (i = 0;i < r_refdef.scene.numentities;i++)
{
R_Shadow_RenderMode_End();
}
+void R_BeginCoronaQuery(rtlight_t *rtlight, float scale, qboolean usequery)
+{
+ // if it's too close, skip it
+ if (VectorLength(rtlight->color) < (1.0f / 256.0f))
+ return;
+ if (VectorDistance2(rtlight->shadoworigin, r_refdef.view.origin) < 32.0f * 32.0f)
+ return;
+ if (usequery && r_numqueries + 2 <= r_maxqueries)
+ {
+ rtlight->corona_queryindex_allpixels = r_queries[r_numqueries++];
+ rtlight->corona_queryindex_visiblepixels = r_queries[r_numqueries++];
+ CHECKGLERROR
+ qglBeginQueryARB(GL_SAMPLES_PASSED_ARB, rtlight->corona_queryindex_allpixels);
+ R_DrawSprite(GL_ONE, GL_ZERO, r_shadow_lightcorona, NULL, true, false, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale, 1, 1, 1, 1);
+ qglEndQueryARB(GL_SAMPLES_PASSED_ARB);
+ qglBeginQueryARB(GL_SAMPLES_PASSED_ARB, rtlight->corona_queryindex_visiblepixels);
+ R_DrawSprite(GL_ONE, GL_ZERO, r_shadow_lightcorona, NULL, false, false, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale, 1, 1, 1, 1);
+ qglEndQueryARB(GL_SAMPLES_PASSED_ARB);
+ CHECKGLERROR
+ }
+ rtlight->corona_visibility = 1;
+}
+
+void R_DrawCorona(rtlight_t *rtlight, float cscale, float scale)
+{
+ vec3_t color;
+ GLint allpixels = 0, visiblepixels = 0;
+ // now we have to check the query result
+ if (rtlight->corona_queryindex_visiblepixels)
+ {
+ CHECKGLERROR
+ qglGetQueryObjectivARB(rtlight->corona_queryindex_visiblepixels, GL_QUERY_RESULT_ARB, &visiblepixels);
+ qglGetQueryObjectivARB(rtlight->corona_queryindex_allpixels, GL_QUERY_RESULT_ARB, &allpixels);
+ CHECKGLERROR
+ //Con_Printf("%i of %i pixels\n", (int)visiblepixels, (int)allpixels);
+ if (visiblepixels < 1 || allpixels < 1)
+ return;
+ rtlight->corona_visibility *= (float)visiblepixels / (float)allpixels;
+ cscale *= rtlight->corona_visibility;
+ }
+ else
+ {
+ // FIXME: these traces should scan all render entities instead of cl.world
+ if (CL_Move(r_refdef.view.origin, vec3_origin, vec3_origin, rtlight->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction < 1)
+ return;
+ }
+ VectorScale(rtlight->color, cscale, color);
+ if (VectorLength(color) > (1.0f / 256.0f))
+ R_DrawSprite(GL_ONE, GL_ONE, r_shadow_lightcorona, NULL, true, false, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale, color[0], color[1], color[2], 1);
+}
+
void R_DrawCoronas(void)
{
int i, flag;
- float cscale, scale;
+ qboolean usequery;
size_t lightindex;
dlight_t *light;
rtlight_t *rtlight;
size_t range;
if (r_coronas.value < (1.0f / 256.0f) && !gl_flashblend.integer)
return;
- R_Mesh_Matrix(&identitymatrix);
+ if (r_waterstate.renderingscene)
+ return;
flag = r_refdef.scene.rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
- // FIXME: these traces should scan all render entities instead of cl.world
+ R_Mesh_Matrix(&identitymatrix);
+
range = Mem_ExpandableArray_IndexRange(&r_shadow_worldlightsarray); // checked
+
+ // check occlusion of coronas
+ // use GL_ARB_occlusion_query if available
+ // otherwise use raytraces
+ r_numqueries = 0;
+ usequery = gl_support_arb_occlusion_query && r_coronas_occlusionquery.integer;
+ if (usequery)
+ {
+ GL_ColorMask(0,0,0,0);
+ if (r_maxqueries < range + r_refdef.scene.numlights)
+ if (r_maxqueries < R_MAX_OCCLUSION_QUERIES)
+ {
+ i = r_maxqueries;
+ r_maxqueries = (range + r_refdef.scene.numlights) * 2;
+ r_maxqueries = min(r_maxqueries, R_MAX_OCCLUSION_QUERIES);
+ CHECKGLERROR
+ qglGenQueriesARB(r_maxqueries - i, r_queries + i);
+ CHECKGLERROR
+ }
+ }
for (lightindex = 0;lightindex < range;lightindex++)
{
light = (dlight_t *) Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
if (!light)
continue;
rtlight = &light->rtlight;
+ rtlight->corona_visibility = 0;
+ rtlight->corona_queryindex_visiblepixels = 0;
+ rtlight->corona_queryindex_allpixels = 0;
if (!(rtlight->flags & flag))
continue;
- if (rtlight->corona * r_coronas.value <= 0)
+ if (rtlight->corona <= 0)
continue;
if (r_shadow_debuglight.integer >= 0 && r_shadow_debuglight.integer != (int)lightindex)
continue;
- cscale = rtlight->corona * r_coronas.value* 0.25f;
- scale = rtlight->radius * rtlight->coronasizescale;
- if (VectorDistance2(rtlight->shadoworigin, r_refdef.view.origin) < 16.0f * 16.0f)
- continue;
- if (CL_Move(r_refdef.view.origin, vec3_origin, vec3_origin, rtlight->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction < 1)
- continue;
- R_DrawSprite(GL_ONE, GL_ONE, r_shadow_lightcorona, NULL, true, false, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale, rtlight->color[0] * cscale, rtlight->color[1] * cscale, rtlight->color[2] * cscale, 1);
+ R_BeginCoronaQuery(rtlight, rtlight->radius * rtlight->coronasizescale * r_coronas_occlusionsizescale.value, usequery);
}
for (i = 0;i < r_refdef.scene.numlights;i++)
{
rtlight = &r_refdef.scene.lights[i];
+ rtlight->corona_visibility = 0;
+ rtlight->corona_queryindex_visiblepixels = 0;
+ rtlight->corona_queryindex_allpixels = 0;
if (!(rtlight->flags & flag))
continue;
if (rtlight->corona <= 0)
continue;
- if (VectorDistance2(rtlight->shadoworigin, r_refdef.view.origin) < 32.0f * 32.0f)
+ R_BeginCoronaQuery(rtlight, rtlight->radius * rtlight->coronasizescale * r_coronas_occlusionsizescale.value, usequery);
+ }
+ if (usequery)
+ GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
+
+ // now draw the coronas using the query data for intensity info
+ for (lightindex = 0;lightindex < range;lightindex++)
+ {
+ light = Mem_ExpandableArray_RecordAtIndex(&r_shadow_worldlightsarray, lightindex);
+ if (!light)
continue;
- if (gl_flashblend.integer)
- {
- cscale = rtlight->corona * 1.0f;
- scale = rtlight->radius * rtlight->coronasizescale * 2.0f;
- }
- else
- {
- cscale = rtlight->corona * r_coronas.value* 0.25f;
- scale = rtlight->radius * rtlight->coronasizescale;
- }
- if (VectorLength(rtlight->color) * cscale < (1.0f / 256.0f))
+ rtlight = &light->rtlight;
+ if (rtlight->corona_visibility <= 0)
continue;
- if (CL_Move(r_refdef.view.origin, vec3_origin, vec3_origin, rtlight->shadoworigin, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID, true, false, NULL, false).fraction < 1)
+ R_DrawCorona(rtlight, rtlight->corona * r_coronas.value * 0.25f, rtlight->radius * rtlight->coronasizescale);
+ }
+ for (i = 0;i < r_refdef.scene.numlights;i++)
+ {
+ rtlight = &r_refdef.scene.lights[i];
+ if (rtlight->corona_visibility <= 0)
continue;
- R_DrawSprite(GL_ONE, GL_ONE, r_shadow_lightcorona, NULL, true, false, rtlight->shadoworigin, r_refdef.view.right, r_refdef.view.up, scale, -scale, -scale, scale, rtlight->color[0] * cscale, rtlight->color[1] * cscale, rtlight->color[2] * cscale, 1);
+ if (gl_flashblend.integer)
+ R_DrawCorona(rtlight, rtlight->corona, rtlight->radius * rtlight->coronasizescale * 2.0f);
+ else
+ R_DrawCorona(rtlight, rtlight->corona * r_coronas.value * 0.25f, rtlight->radius * rtlight->coronasizescale);
}
}
projects / xonotic / darkplaces.git / commitdiff