use textureSize() in shadows-sapp.glsl instead passing from cpu side

floooh · Jul 3, 2023 · 616465b · 616465b
1 parent cd180e6
commit 616465b
Show file tree

Hide file tree

Showing 2 changed files with 1 addition and 2 deletions.
diff --git a/sapp/shadows-sapp.c b/sapp/shadows-sapp.c
@@ -277,7 +277,6 @@ void frame(void) {
     const fs_display_params_t fs_display_params = {
         .light_dir = HMM_NormalizeVec3(light_pos.XYZ),
         .eye_pos = eye_pos,
-        .sm_size = HMM_Vec2(2048.0f, 2048.0f),
     };
 
     const vs_display_params_t plane_vs_display_params = {

diff --git a/sapp/shadows-sapp.glsl b/sapp/shadows-sapp.glsl
@@ -105,7 +105,6 @@ void main() {
 uniform fs_display_params {
     vec3 light_dir;
     vec3 eye_pos;
-    vec2 sm_size;
 };
 
 uniform texture2D shadow_map;
@@ -124,6 +123,7 @@ vec4 gamma(vec4 c) {
 }
 
 void main() {
+    vec2 sm_size = textureSize(sampler2D(shadow_map, shadow_sampler), 0);
     float spec_power = 2.2;
     float ambient_intensity = 0.25;
     vec3 l = normalize(light_dir);