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Frustum culling

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Mid 2025-07-27 16:16:45 +03:00
parent 4d74b5e3e9
commit 3bb8a63ee1
1 changed files with 31 additions and 3 deletions
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34
src/k3.c
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@ -12,6 +12,7 @@
#include<cglm/vec2.h> #include<cglm/vec2.h>
#include<cglm/frustum.h> #include<cglm/frustum.h>
#include<cglm/cam.h> #include<cglm/cam.h>
#include<cglm/box.h>
#include"ssort.h" #include"ssort.h"
@ -1309,9 +1310,22 @@ static void apply_cpu_skinning(struct k3Mdl *mdl, struct k3AnimationBone *bones)
glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, mdl->offV, mdl->verts * sizeof(*boned), boned); glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, mdl->offV, mdl->verts * sizeof(*boned), boned);
} }
static void forward_subpass(mat4 view, int transparent, int lightsStart, int lightsCount, size_t rbleStart, size_t rbleEnd) { static bool outside_frustum(vec3 *aabb, float *modelmat, vec4 *frustum) {
vec3 transformedAABB[2];
glm_aabb_transform(aabb, modelmat, transformedAABB);
return !glm_aabb_frustum(transformedAABB, frustum);
}
static void forward_subpass(mat4 projection, mat4 view, int transparent, int lightsStart, int lightsCount, size_t rbleStart, size_t rbleEnd) {
setup_ff_lights(view, lightsStart, lightsCount); setup_ff_lights(view, lightsStart, lightsCount);
mat4 viewProj;
glm_mat4_mul(projection, view, viewProj);
vec4 cameraFrustum[6];
glm_frustum_planes(viewProj, cameraFrustum);
GLhandleARB lastGLSL = -1; GLhandleARB lastGLSL = -1;
GLuint lastVP = 0, lastFP = 0; GLuint lastVP = 0, lastFP = 0;
struct k3Mat *lastMaterial = NULL; struct k3Mat *lastMaterial = NULL;
@ -1327,6 +1341,10 @@ static void forward_subpass(mat4 view, int transparent, int lightsStart, int lig
GLuint arbvp = renderQueue[rble].arbvp; GLuint arbvp = renderQueue[rble].arbvp;
GLuint arbfp = renderQueue[rble].arbfp; GLuint arbfp = renderQueue[rble].arbfp;
if(outside_frustum(mdl->aabb, modelmat, cameraFrustum)) {
continue;
}
struct k3Mat *mat = &mesh->mat; struct k3Mat *mat = &mesh->mat;
if(mat->passes[0].additive && lightsStart != 0) { if(mat->passes[0].additive && lightsStart != 0) {
@ -1535,7 +1553,7 @@ void k3PassForward(mat4 projection, mat4 cam) {
int l = 0, k = LightCount; int l = 0, k = LightCount;
while(1) { while(1) {
forward_subpass(view, 0, l, k > 4 ? 4 : k, 0, renderQueueSize); forward_subpass(projection, view, 0, l, k > 4 ? 4 : k, 0, renderQueueSize);
l += 4; l += 4;
k -= 4; k -= 4;
@ -1549,7 +1567,7 @@ void k3PassForward(mat4 projection, mat4 cam) {
for(size_t rble = 0; rble < renderQueueSize; rble++) { for(size_t rble = 0; rble < renderQueueSize; rble++) {
l = 0, k = LightCount; l = 0, k = LightCount;
while(1) { while(1) {
forward_subpass(view, 1, l, k > 4 ? 4 : k, rble, rble + 1); forward_subpass(projection, view, 1, l, k > 4 ? 4 : k, rble, rble + 1);
l += 4; l += 4;
k -= 4; k -= 4;
@ -1573,6 +1591,12 @@ void k3PassDepthOnly(mat4 projection, mat4 cam, int clear, int cull) {
setup_arbprog_globals(); setup_arbprog_globals();
mat4 viewProj;
glm_mat4_mul(projection, view, viewProj);
vec4 cameraFrustum[6];
glm_frustum_planes(viewProj, cameraFrustum);
glEnable(GL_DEPTH_TEST); glEnable(GL_DEPTH_TEST);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
glDepthMask(GL_TRUE); glDepthMask(GL_TRUE);
@ -1608,6 +1632,10 @@ void k3PassDepthOnly(mat4 projection, mat4 cam, int clear, int cull) {
continue; continue;
} }
if(outside_frustum(mdl->aabb, modelmat, cameraFrustum)) {
continue;
}
GLhandleARB glsl = renderQueue[rble].glsl; GLhandleARB glsl = renderQueue[rble].glsl;
GLuint arbvp = renderQueue[rble].arbvp; GLuint arbvp = renderQueue[rble].arbvp;