cvar_t r_shadow_texture3d = {0, "r_shadow_texture3d", "0"};
cvar_t r_shadow_gloss = {0, "r_shadow_gloss", "1"};
cvar_t r_shadow_debuglight = {0, "r_shadow_debuglight", "-1"};
+cvar_t r_shadow_scissor = {0, "r_shadow_scissor", "1"};
void R_Shadow_ClearWorldLights(void);
void r_shadow_start(void)
Cvar_RegisterVariable(&r_shadow_gloss);
Cvar_RegisterVariable(&r_shadow_debuglight);
Cvar_RegisterVariable(&r_shadow_erasebydrawing);
+ Cvar_RegisterVariable(&r_shadow_scissor);
R_Shadow_EditLights_Init();
R_RegisterModule("R_Shadow", r_shadow_start, r_shadow_shutdown, r_shadow_newmap);
}
qglEnable(GL_CULL_FACE);
qglEnable(GL_DEPTH_TEST);
r_shadowstage = SHADOWSTAGE_STENCIL;
+ if (!r_shadow_erasebydrawing.integer)
+ qglClear(GL_STENCIL_BUFFER_BIT);
}
void R_Shadow_Stage_Light(void)
return true;
}
else
- {
- qglClear(GL_STENCIL_BUFFER_BIT);
return false;
- }
}
void R_Shadow_Stage_End(void)
// now restore the rest of the state to normal
GL_Color(1, 1, 1, 1);
qglColorMask(1, 1, 1, 1);
+ qglDisable(GL_SCISSOR_TEST);
qglDepthFunc(GL_LEQUAL);
qglDisable(GL_STENCIL_TEST);
qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
r_shadowstage = SHADOWSTAGE_NONE;
}
+int R_Shadow_ScissorForBBoxAndSphere(const float *mins, const float *maxs, const float *origin, float radius)
+{
+ int i, ix1, iy1, ix2, iy2;
+ float x1, y1, x2, y2, x, y;
+ vec3_t smins, smaxs;
+ vec4_t v, v2;
+ if (!r_shadow_scissor.integer)
+ return false;
+ // if view is inside the box, just say yes it's visible
+ if (r_origin[0] >= mins[0] && r_origin[0] <= maxs[0]
+ && r_origin[1] >= mins[1] && r_origin[1] <= maxs[1]
+ && r_origin[2] >= mins[2] && r_origin[2] <= maxs[2])
+ {
+ qglDisable(GL_SCISSOR_TEST);
+ return false;
+ }
+ VectorSubtract(r_origin, origin, v);
+ if (DotProduct(v, v) < radius * radius)
+ {
+ qglDisable(GL_SCISSOR_TEST);
+ return false;
+ }
+ // create viewspace bbox
+ for (i = 0;i < 8;i++)
+ {
+ v[0] = ((i & 1) ? mins[0] : maxs[0]) - r_origin[0];
+ v[1] = ((i & 2) ? mins[1] : maxs[1]) - r_origin[1];
+ v[2] = ((i & 4) ? mins[2] : maxs[2]) - r_origin[2];
+ v2[0] = DotProduct(v, vright);
+ v2[1] = DotProduct(v, vup);
+ v2[2] = DotProduct(v, vpn);
+ if (i)
+ {
+ if (smins[0] > v2[0]) smins[0] = v2[0];
+ if (smaxs[0] < v2[0]) smaxs[0] = v2[0];
+ if (smins[1] > v2[1]) smins[1] = v2[1];
+ if (smaxs[1] < v2[1]) smaxs[1] = v2[1];
+ if (smins[2] > v2[2]) smins[2] = v2[2];
+ if (smaxs[2] < v2[2]) smaxs[2] = v2[2];
+ }
+ else
+ {
+ smins[0] = smaxs[0] = v2[0];
+ smins[1] = smaxs[1] = v2[1];
+ smins[2] = smaxs[2] = v2[2];
+ }
+ }
+ // now we have a bbox in viewspace
+ // clip it to the viewspace version of the sphere
+ v[0] = origin[0] - r_origin[0];
+ v[1] = origin[1] - r_origin[1];
+ v[2] = origin[2] - r_origin[2];
+ v2[0] = DotProduct(v, vright);
+ v2[1] = DotProduct(v, vup);
+ v2[2] = DotProduct(v, vpn);
+ if (smins[0] < v2[0] - radius) smins[0] = v2[0] - radius;
+ if (smaxs[0] < v2[0] - radius) smaxs[0] = v2[0] + radius;
+ if (smins[1] < v2[1] - radius) smins[1] = v2[1] - radius;
+ if (smaxs[1] < v2[1] - radius) smaxs[1] = v2[1] + radius;
+ if (smins[2] < v2[2] - radius) smins[2] = v2[2] - radius;
+ if (smaxs[2] < v2[2] - radius) smaxs[2] = v2[2] + radius;
+ // clip it to the view plane
+ if (smins[2] < 1)
+ smins[2] = 1;
+ // return true if that culled the box
+ if (smins[2] >= smaxs[2])
+ return true;
+ // ok some of it is infront of the view, transform each corner back to
+ // worldspace and then to screenspace and make screen rect
+ for (i = 0;i < 8;i++)
+ {
+ v2[0] = (i & 1) ? smins[0] : smaxs[0];
+ v2[1] = (i & 2) ? smins[1] : smaxs[1];
+ v2[2] = (i & 4) ? smins[2] : smaxs[2];
+ v[0] = v2[0] * vright[0] + v2[1] * vup[0] + v2[2] * vpn[0] + r_origin[0];
+ v[1] = v2[0] * vright[1] + v2[1] * vup[1] + v2[2] * vpn[1] + r_origin[1];
+ v[2] = v2[0] * vright[2] + v2[1] * vup[2] + v2[2] * vpn[2] + r_origin[2];
+ v[3] = 1.0f;
+ GL_TransformToScreen(v, v2);
+ //Con_Printf("%.3f %.3f %.3f %.3f transformed to %.3f %.3f %.3f %.3f\n", v[0], v[1], v[2], v[3], v2[0], v2[1], v2[2], v2[3]);
+ x = v2[0];
+ y = v2[1];
+ if (i)
+ {
+ if (x1 > x) x1 = x;
+ if (x2 < x) x2 = x;
+ if (y1 > y) y1 = y;
+ if (y2 < y) y2 = y;
+ }
+ else
+ {
+ x1 = x2 = x;
+ y1 = y2 = y;
+ }
+ }
+ /*
+ // this code doesn't handle boxes with any points behind view properly
+ x1 = 1000;x2 = -1000;
+ y1 = 1000;y2 = -1000;
+ for (i = 0;i < 8;i++)
+ {
+ v[0] = (i & 1) ? mins[0] : maxs[0];
+ v[1] = (i & 2) ? mins[1] : maxs[1];
+ v[2] = (i & 4) ? mins[2] : maxs[2];
+ v[3] = 1.0f;
+ GL_TransformToScreen(v, v2);
+ //Con_Printf("%.3f %.3f %.3f %.3f transformed to %.3f %.3f %.3f %.3f\n", v[0], v[1], v[2], v[3], v2[0], v2[1], v2[2], v2[3]);
+ if (v2[2] > 0)
+ {
+ x = v2[0];
+ y = v2[1];
+
+ if (x1 > x) x1 = x;
+ if (x2 < x) x2 = x;
+ if (y1 > y) y1 = y;
+ if (y2 < y) y2 = y;
+ }
+ }
+ */
+ ix1 = x1 - 1.0f;
+ iy1 = y1 - 1.0f;
+ ix2 = x2 + 1.0f;
+ iy2 = y2 + 1.0f;
+ //Con_Printf("%f %f %f %f\n", x1, y1, x2, y2);
+ if (ix1 < r_refdef.x) ix1 = r_refdef.x;
+ if (iy1 < r_refdef.y) iy1 = r_refdef.y;
+ if (ix2 > r_refdef.x + r_refdef.width) ix2 = r_refdef.x + r_refdef.width;
+ if (iy2 > r_refdef.y + r_refdef.height) iy2 = r_refdef.y + r_refdef.height;
+ if (ix2 <= ix1 || iy2 <= iy1)
+ return true;
+ // set up the scissor rectangle
+ qglScissor(ix1, iy1, ix2 - ix1, iy2 - iy1);
+ qglEnable(GL_SCISSOR_TEST);
+ return false;
+}
+
void R_Shadow_GenTexCoords_Attenuation2D1D(float *out2d, float *out1d, int numverts, const float *vertex, const float *svectors, const float *tvectors, const float *normals, const vec3_t relativelightorigin, float lightradius)
{
int i;
projects / xonotic / darkplaces.git / blobdiff