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Spotlight frustum caculation and culling.

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git-svn-id: https://svn.eduke32.com/eduke32@1267 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
plagman 2009-03-25 21:14:51 +00:00
parent bd69a9a286
commit b2e3b85e6d
2 changed files with 48 additions and 20 deletions
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12
polymer/eduke32/build/include/polymer.h
View file

@ -125,17 +125,13 @@ typedef struct s_prprogrambit {
#define STR_EXPAND(tok) #tok
#define STR(tok) STR_EXPAND(tok)
typedef enum {
PR_LIGHT_POINT,
PR_LIGHT_SPOT,
PR_LIGHT_DIRECTIONAL
} prlighttype;
typedef struct s_prlight {
int32_t x, y, z, horiz, range;
int16_t angle, faderadius, radius, sector;
char color[3];
prlighttype type;
GLfloat proj[16];
GLfloat transform[16];
float frustum[5 * 4];
} _prlight;
// RENDER TARGETS
@ -269,7 +265,7 @@ static void polymer_crossproduct(GLfloat* in_a, GLfloat* in_b, GLfloat*
static void polymer_transformpoint(float* inpos, float* pos, float* matrix);
static void polymer_pokesector(int16_t sectnum);
static void polymer_extractfrustum(GLfloat* modelview, GLfloat* projection, float* frustum);
static int32_t polymer_portalinfrustum(int16_t wallnum, float* frustum);
static int32_t polymer_planeinfrustum(_prplane *plane, float* frustum);
static void polymer_scansprites(int16_t sectnum, spritetype* tsprite, int32_t* spritesortcnt);
// SKIES
static void polymer_getsky(void);

56
polymer/eduke32/build/src/polymer.c
View file

@ -932,6 +932,38 @@ void polymer_addlight(_prlight light)
{
prlights[lightcount] = light;
if (light.radius) {
float radius, ang, horizang, lightpos[3];
lightpos[0] = light.y;
lightpos[1] = -light.z / 16.0f;
lightpos[2] = -light.x;
// calculate the spot light transformations and matrices
radius = (float)(light.radius) / (2048.0f / 360.0f);
ang = (float)(light.angle) / (2048.0f / 360.0f);
horizang = (float)(-getangle(128, light.horiz-100)) / (2048.0f / 360.0f);
bglMatrixMode(GL_PROJECTION);
bglPushMatrix();
bglLoadIdentity();
bgluPerspective(radius * 2, 1, 0.1f, light.range / 1000.0f);
bglGetFloatv(GL_PROJECTION_MATRIX, prlights[lightcount].proj);
bglPopMatrix();
bglMatrixMode(GL_MODELVIEW);
bglPushMatrix();
bglLoadIdentity();
bglRotatef(horizang, 1.0f, 0.0f, 0.0f);
bglRotatef(ang, 0.0f, 1.0f, 0.0f);
bglScalef(1.0f / 1000.0f, 1.0f / 1000.0f, 1.0f / 1000.0f);
bglTranslatef(-lightpos[0], -lightpos[1], -lightpos[2]);
bglGetFloatv(GL_MODELVIEW_MATRIX, prlights[lightcount].transform);
bglPopMatrix();
polymer_extractfrustum(prlights[lightcount].transform, prlights[lightcount].proj, prlights[lightcount].frustum);
}
polymer_culllight(lightcount);
lightcount++;
@ -1024,7 +1056,7 @@ static void polymer_displayrooms(int16_t dacursectnum)
{
if ((wall[sec->wallptr + i].nextsector != -1) &&
(wallvisible(sec->wallptr + i)) &&
(polymer_portalinfrustum(sec->wallptr + i, frustum)))
(polymer_planeinfrustum(&prwalls[sec->wallptr + i]->mask, frustum)))
{
if (wall[sec->wallptr + i].cstat & 48)
localmaskwall[localmaskwallcnt++] = sec->wallptr + i;
@ -2404,7 +2436,7 @@ static void polymer_extractfrustum(GLfloat* modelview, GLfloat* projecti
frustum[i + 4] = matrix[(4 * i) + 3] - matrix[4 * i]; // right
frustum[i + 8] = matrix[(4 * i) + 3] - matrix[(4 * i) + 1]; // top
frustum[i + 12] = matrix[(4 * i) + 3] + matrix[(4 * i) + 1]; // bottom
frustum[i + 16] = matrix[(4 * i) + 3] + matrix[(4 * i) + 2]; // near
frustum[i + 16] = matrix[(4 * i) + 3] - matrix[(4 * i) + 2]; // far
i++;
}
i = 0;
@ -2412,29 +2444,26 @@ static void polymer_extractfrustum(GLfloat* modelview, GLfloat* projecti
if (pr_verbosity >= 3) OSD_Printf("PR : Frustum extracted.\n");
}
static int32_t polymer_portalinfrustum(int16_t wallnum, float* frustum)
static int32_t polymer_planeinfrustum(_prplane *plane, float* frustum)
{
int32_t i, j, k;
float sqdist;
_prwall *w;
w = prwalls[wallnum];
i = 0;
while (i < 4)
while (i < 5)
{
j = k = 0;
while (j < 4)
while (j < plane->vertcount)
{
sqdist = frustum[(i * 4) + 0] * w->bigportal[(j * 5) + 0] +
frustum[(i * 4) + 1] * w->bigportal[(j * 5) + 1] +
frustum[(i * 4) + 2] * w->bigportal[(j * 5) + 2] +
sqdist = frustum[(i * 4) + 0] * plane->buffer[(j * 5) + 0] +
frustum[(i * 4) + 1] * plane->buffer[(j * 5) + 1] +
frustum[(i * 4) + 2] * plane->buffer[(j * 5) + 2] +
frustum[(i * 4) + 3];
if (sqdist < 0)
k++;
j++;
}
if (k == 4)
if (k == plane->vertcount)
return (0); // OUT !
i++;
}
@ -3406,6 +3435,9 @@ static int32_t polymer_planeinlight(_prplane* plane, _prlight* light)
float lightpos[3];
int i, j, k, l;
if (light->radius)
return polymer_planeinfrustum(plane, light->frustum);
lightpos[0] = light->y;
lightpos[1] = -light->z / 16.0f;
lightpos[2] = -light->x;