{
R_SHADOW_RENDERMODE_NONE,
R_SHADOW_RENDERMODE_STENCIL,
+ R_SHADOW_RENDERMODE_SEPARATESTENCIL,
R_SHADOW_RENDERMODE_STENCILTWOSIDE,
R_SHADOW_RENDERMODE_LIGHT_VERTEX,
R_SHADOW_RENDERMODE_LIGHT_DOT3,
unsigned char *r_shadow_buffer_surfacepvs;
int *r_shadow_buffer_surfacelist;
+// current light's cull box (copied out of an rtlight or calculated by GetLightInfo)
+vec3_t r_shadow_rtlight_cullmins;
+vec3_t r_shadow_rtlight_cullmaxs;
+
rtexturepool_t *r_shadow_texturepool;
rtexture_t *r_shadow_attenuation2dtexture;
rtexture_t *r_shadow_attenuation3dtexture;
cvar_t r_shadow_shadow_polygonfactor = {0, "r_shadow_shadow_polygonfactor", "0", "how much to enlarge shadow volume polygons when rendering (should be 0!)"};
cvar_t r_shadow_shadow_polygonoffset = {0, "r_shadow_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 gl_ext_separatestencil = {0, "gl_ext_separatetencil", "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_t r_editlights = {0, "r_editlights", "0", "enables .rtlights file editing mode"};
cvar_t r_editlights_cursordistance = {0, "r_editlights_cursordistance", "1024", "maximum distance of cursor from eye"};
Cvar_RegisterVariable(&r_shadow_shadow_polygonfactor);
Cvar_RegisterVariable(&r_shadow_shadow_polygonoffset);
Cvar_RegisterVariable(&r_shadow_texture3d);
+ Cvar_RegisterVariable(&gl_ext_separatestencil);
Cvar_RegisterVariable(&gl_ext_stenciltwoside);
if (gamemode == GAME_TENEBRAE)
{
int tris, outverts;
if (projectdistance < 0.1)
{
- Con_Printf("R_Shadow_Volume: projectdistance %f\n");
+ Con_Printf("R_Shadow_Volume: projectdistance %f\n", projectdistance);
return;
}
if (!numverts || !nummarktris)
{
if (r_shadow_texture3d.integer && !gl_texture3d)
Cvar_SetValueQuick(&r_shadow_texture3d, 0);
+ if (gl_ext_separatestencil.integer && !gl_support_separatestencil)
+ Cvar_SetValueQuick(&gl_ext_separatestencil, 0);
if (gl_ext_stenciltwoside.integer && !gl_support_stenciltwoside)
Cvar_SetValueQuick(&gl_ext_stenciltwoside, 0);
}
R_Mesh_ColorPointer(NULL);
R_Mesh_ResetTextureState();
GL_BlendFunc(GL_ONE, GL_ZERO);
+ GL_DepthTest(true);
GL_DepthMask(false);
GL_Color(0, 0, 0, 1);
GL_Scissor(r_view.x, r_view.y, r_view.width, r_view.height);
r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
- if (gl_ext_stenciltwoside.integer)
+ if (gl_ext_separatestencil.integer)
+ r_shadow_shadowingrendermode = R_SHADOW_RENDERMODE_SEPARATESTENCIL;
+ else if (gl_ext_stenciltwoside.integer)
r_shadow_shadowingrendermode = R_SHADOW_RENDERMODE_STENCILTWOSIDE;
else
r_shadow_shadowingrendermode = R_SHADOW_RENDERMODE_STENCIL;
}
R_Mesh_ColorPointer(NULL);
R_Mesh_ResetTextureState();
+ GL_DepthTest(true);
+ GL_DepthMask(false);
+ qglDepthFunc(GL_LEQUAL);CHECKGLERROR
+ qglPolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);CHECKGLERROR
+ qglDisable(GL_STENCIL_TEST);CHECKGLERROR
+ qglStencilMask(~0);CHECKGLERROR
+ qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);CHECKGLERROR
+ qglStencilFunc(GL_ALWAYS, 128, ~0);CHECKGLERROR
+ GL_CullFace(GL_FRONT); // quake is backwards, this culls back faces
+ GL_Color(1, 1, 1, 1);
+ GL_ColorMask(r_view.colormask[0], r_view.colormask[1], r_view.colormask[2], 1);
+ GL_BlendFunc(GL_ONE, GL_ZERO);
}
void R_Shadow_RenderMode_StencilShadowVolumes(void)
{
CHECKGLERROR
R_Shadow_RenderMode_Reset();
- GL_Color(1, 1, 1, 1);
GL_ColorMask(0, 0, 0, 0);
- GL_BlendFunc(GL_ONE, GL_ZERO);
- GL_DepthMask(false);
qglPolygonOffset(r_refdef.shadowpolygonfactor, r_refdef.shadowpolygonoffset);CHECKGLERROR
qglDepthFunc(GL_LESS);CHECKGLERROR
qglEnable(GL_STENCIL_TEST);CHECKGLERROR
- qglStencilFunc(GL_ALWAYS, 128, ~0);CHECKGLERROR
r_shadow_rendermode = r_shadow_shadowingrendermode;
- if (r_shadow_rendermode == R_SHADOW_RENDERMODE_STENCILTWOSIDE)
+ if (r_shadow_rendermode == R_SHADOW_RENDERMODE_SEPARATESTENCIL)
+ {
+ GL_CullFace(GL_NONE);
+ qglStencilOpSeparate(GL_BACK, GL_KEEP, GL_INCR, GL_KEEP);CHECKGLERROR // quake is backwards, this is front faces
+ qglStencilOpSeparate(GL_FRONT, GL_KEEP, GL_DECR, GL_KEEP);CHECKGLERROR // quake is backwards, this is back faces
+ }
+ else if (r_shadow_rendermode == R_SHADOW_RENDERMODE_STENCILTWOSIDE)
{
GL_CullFace(GL_NONE);
qglEnable(GL_STENCIL_TEST_TWO_SIDE_EXT);CHECKGLERROR
qglStencilMask(~0);CHECKGLERROR
qglStencilOp(GL_KEEP, GL_DECR, GL_KEEP);CHECKGLERROR
}
- else
- {
- GL_CullFace(GL_FRONT); // quake is backwards, this culls back faces
- qglStencilMask(~0);CHECKGLERROR
- // this is changed by every shadow render so its value here is unimportant
- qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);CHECKGLERROR
- }
GL_Clear(GL_STENCIL_BUFFER_BIT);
r_refdef.stats.lights_clears++;
}
CHECKGLERROR
R_Shadow_RenderMode_Reset();
GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
- GL_DepthMask(false);
- qglPolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);CHECKGLERROR
- //qglDisable(GL_POLYGON_OFFSET_FILL);CHECKGLERROR
- GL_Color(1, 1, 1, 1);
- GL_ColorMask(r_view.colormask[0], r_view.colormask[1], r_view.colormask[2], 1);
- if (transparent)
- {
- qglDepthFunc(GL_LEQUAL);CHECKGLERROR
- }
- else
+ if (!transparent)
{
qglDepthFunc(GL_EQUAL);CHECKGLERROR
}
if (stenciltest)
{
qglEnable(GL_STENCIL_TEST);CHECKGLERROR
+ // only draw light where this geometry was already rendered AND the
+ // stencil is 128 (values other than this mean shadow)
+ qglStencilFunc(GL_EQUAL, 128, ~0);CHECKGLERROR
}
- else
- {
- qglDisable(GL_STENCIL_TEST);CHECKGLERROR
- }
- qglStencilMask(~0);CHECKGLERROR
- qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);CHECKGLERROR
- // only draw light where this geometry was already rendered AND the
- // stencil is 128 (values other than this mean shadow)
- qglStencilFunc(GL_EQUAL, 128, ~0);CHECKGLERROR
r_shadow_rendermode = r_shadow_lightingrendermode;
// do global setup needed for the chosen lighting mode
if (r_shadow_rendermode == R_SHADOW_RENDERMODE_LIGHT_GLSL)
CHECKGLERROR
R_Shadow_RenderMode_Reset();
GL_BlendFunc(GL_ONE, GL_ONE);
- GL_DepthMask(false);
- qglPolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);CHECKGLERROR
+ GL_DepthTest(r_showshadowvolumes.integer < 2);
GL_Color(0.0, 0.0125 * r_view.colorscale, 0.1 * r_view.colorscale, 1);
- GL_ColorMask(r_view.colormask[0], r_view.colormask[1], r_view.colormask[2], 1);
- if (r_showshadowvolumes.integer >= 2)
- {
- qglDepthFunc(GL_ALWAYS);CHECKGLERROR
- }
- else
- {
- qglDepthFunc(GL_GEQUAL);CHECKGLERROR
- }
- qglDisable(GL_STENCIL_TEST);CHECKGLERROR
+ qglPolygonOffset(r_refdef.shadowpolygonfactor, r_refdef.shadowpolygonoffset);CHECKGLERROR
+ GL_CullFace(GL_NONE);
r_shadow_rendermode = R_SHADOW_RENDERMODE_VISIBLEVOLUMES;
}
CHECKGLERROR
R_Shadow_RenderMode_Reset();
GL_BlendFunc(GL_ONE, GL_ONE);
- GL_DepthMask(false);
- qglPolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);CHECKGLERROR
+ GL_DepthTest(r_showlighting.integer < 2);
GL_Color(0.1 * r_view.colorscale, 0.0125 * r_view.colorscale, 0, 1);
- GL_ColorMask(r_view.colormask[0], r_view.colormask[1], r_view.colormask[2], 1);
- if (r_showshadowvolumes.integer >= 2)
- {
- qglDepthFunc(GL_ALWAYS);CHECKGLERROR
- }
- else if (transparent)
- {
- qglDepthFunc(GL_LEQUAL);CHECKGLERROR
- }
- else
+ if (!transparent)
{
qglDepthFunc(GL_EQUAL);CHECKGLERROR
}
{
qglEnable(GL_STENCIL_TEST);CHECKGLERROR
}
- else
- {
- qglDisable(GL_STENCIL_TEST);CHECKGLERROR
- }
r_shadow_rendermode = R_SHADOW_RENDERMODE_VISIBLELIGHTING;
}
CHECKGLERROR
R_Shadow_RenderMode_Reset();
R_Shadow_RenderMode_ActiveLight(NULL);
- GL_BlendFunc(GL_ONE, GL_ZERO);
GL_DepthMask(true);
- qglPolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);CHECKGLERROR
- //qglDisable(GL_POLYGON_OFFSET_FILL);CHECKGLERROR
- GL_Color(1, 1, 1, 1);
- GL_ColorMask(r_view.colormask[0], r_view.colormask[1], r_view.colormask[2], 1);
GL_Scissor(r_view.x, r_view.y, r_view.width, r_view.height);
- qglDepthFunc(GL_LEQUAL);CHECKGLERROR
- if (gl_support_stenciltwoside)
- {
- qglDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);CHECKGLERROR
- }
- qglDisable(GL_STENCIL_TEST);CHECKGLERROR
- qglStencilMask(~0);CHECKGLERROR
- qglStencilFunc(GL_ALWAYS, 128, ~0);CHECKGLERROR
- qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);CHECKGLERROR
- GL_CullFace(GL_FRONT); // quake is backwards, this culls back faces
r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
}
else if (numsurfaces)
{
R_Mesh_Matrix(&ent->matrix);
- model->DrawShadowVolume(ent, r_shadow_rtlight->shadoworigin, NULL, r_shadow_rtlight->radius, numsurfaces, surfacelist, r_shadow_rtlight->cullmins, r_shadow_rtlight->cullmaxs);
+ model->DrawShadowVolume(ent, r_shadow_rtlight->shadoworigin, NULL, r_shadow_rtlight->radius, numsurfaces, surfacelist, r_shadow_rtlight_cullmins, r_shadow_rtlight_cullmaxs);
}
}
else
if (R_CullBox(rtlight->cullmins, rtlight->cullmaxs))
return;
+ VectorCopy(rtlight->cullmins, r_shadow_rtlight_cullmins);
+ VectorCopy(rtlight->cullmaxs, r_shadow_rtlight_cullmaxs);
+
if (rtlight->compiled && r_shadow_realtime_world_compile.integer)
{
// compiled light, world available and can receive realtime lighting
// dynamic light, world available and can receive realtime lighting
// calculate lit surfaces and leafs
R_Shadow_EnlargeLeafSurfaceBuffer(r_refdef.worldmodel->brush.num_leafs, r_refdef.worldmodel->num_surfaces);
- r_refdef.worldmodel->GetLightInfo(r_refdef.worldentity, rtlight->shadoworigin, rtlight->radius, rtlight->cullmins, rtlight->cullmaxs, r_shadow_buffer_leaflist, r_shadow_buffer_leafpvs, &numleafs, r_shadow_buffer_surfacelist, r_shadow_buffer_surfacepvs, &numsurfaces);
+ r_refdef.worldmodel->GetLightInfo(r_refdef.worldentity, rtlight->shadoworigin, rtlight->radius, r_shadow_rtlight_cullmins, r_shadow_rtlight_cullmaxs, r_shadow_buffer_leaflist, r_shadow_buffer_leafpvs, &numleafs, r_shadow_buffer_surfacelist, r_shadow_buffer_surfacepvs, &numsurfaces);
leaflist = r_shadow_buffer_leaflist;
leafpvs = r_shadow_buffer_leafpvs;
surfacelist = r_shadow_buffer_surfacelist;
// if the reduced leaf bounds are offscreen, skip it
- if (R_CullBox(rtlight->cullmins, rtlight->cullmaxs))
+ if (R_CullBox(r_shadow_rtlight_cullmins, r_shadow_rtlight_cullmaxs))
return;
}
else
return;
}
// set up a scissor rectangle for this light
- if (R_Shadow_ScissorForBBox(rtlight->cullmins, rtlight->cullmaxs))
+ if (R_Shadow_ScissorForBBox(r_shadow_rtlight_cullmins, r_shadow_rtlight_cullmaxs))
return;
// make a list of lit entities and shadow casting entities
{
model_t *model;
entity_render_t *ent = r_refdef.entities[i];
- if (BoxesOverlap(ent->mins, ent->maxs, rtlight->cullmins, rtlight->cullmaxs)
+ if (BoxesOverlap(ent->mins, ent->maxs, r_shadow_rtlight_cullmins, r_shadow_rtlight_cullmaxs)
&& (model = ent->model)
&& !(ent->flags & RENDER_TRANSPARENT)
&& (r_refdef.worldmodel == NULL || r_refdef.worldmodel->brush.BoxTouchingLeafPVS == NULL || r_refdef.worldmodel->brush.BoxTouchingLeafPVS(r_refdef.worldmodel, leafpvs, ent->mins, ent->maxs)))
r_shadow_rendermode = R_SHADOW_RENDERMODE_NONE;
- if (gl_ext_stenciltwoside.integer)
+ if (gl_ext_separatestencil.integer)
+ r_shadow_shadowingrendermode = R_SHADOW_RENDERMODE_SEPARATESTENCIL;
+ else if (gl_ext_stenciltwoside.integer)
r_shadow_shadowingrendermode = R_SHADOW_RENDERMODE_STENCILTWOSIDE;
else
r_shadow_shadowingrendermode = R_SHADOW_RENDERMODE_STENCIL;
// apply the blend to the shadowed areas
R_Mesh_Draw(0, 4, 2, polygonelements);
- // restore perspective view
- R_SetupView(&r_view.matrix);
+ // restoring the perspective view is done by R_RenderScene
+ //R_SetupView(&r_view.matrix);
// restore other state to normal
- GL_DepthTest(true);
R_Shadow_RenderMode_End();
}
projects / xonotic / darkplaces.git / blobdiff