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render: optimise lighting

main
Dominik Madarász 2023-09-25 06:10:36 +02:00
parent 9731ca611c
commit 4cd8f820de
2 changed files with 12 additions and 15 deletions
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4
demos/99-pbr.c
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@ -193,8 +193,8 @@ void ModelRender( Model *G, const mat44 _worldRootMatrix ) {
for( int i = 0, end = array_count(G->meshes); i < end; i++ ) {
const Mesh *mesh = &G->meshes[ i ];
// Postpone rendering transparent meshes
if(mesh->transparent != bTransparentPass)
continue;
// if(mesh->transparent != bTransparentPass)
// continue;
const pbr_material_t *material = &G->materials[ mesh->material_idx ];
shader_colormap( "map_diffuse", material->diffuse );

23
engine/art/shaders/fs_32_4_model.glsl
View File

@ -65,23 +65,20 @@ vec3 shading_phong(light_t l) {
if (l.type == LIGHT_DIRECTIONAL) {
lightDir = normalize(-l.dir);
} else if (l.type == LIGHT_POINT) {
} else if (l.type == LIGHT_POINT || l.type == LIGHT_SPOT) {
vec3 toLight = l.pos - v_position_ws;
lightDir = normalize(toLight);
float distance = length(toLight);
attenuation = 1.0 / (l.constant + l.linear * distance + l.quadratic * (distance * distance));
} else if (l.type == LIGHT_SPOT) {
vec3 toLight = l.pos - v_position_ws;
lightDir = normalize(toLight);
float distance = length(toLight);
attenuation = 1.0 / (l.constant + l.linear * distance + l.quadratic * (distance * distance));
float angle = dot(l.dir, -lightDir);
if (angle > l.outerCone) {
float intensity = (angle-l.outerCone)/(l.innerCone-l.outerCone);
attenuation *= clamp(intensity, 0.0, 1.0);
} else {
attenuation = 0.0;
if (l.type == LIGHT_SPOT) {
float angle = dot(l.dir, -lightDir);
if (angle > l.outerCone) {
float intensity = (angle-l.outerCone)/(l.innerCone-l.outerCone);
attenuation *= clamp(intensity, 0.0, 1.0);
} else {
attenuation = 0.0;
}
}
}