Fragment shader optimizations

[dragonblocks_alpha.git] / src / client / scene.c

diff --git a/src/client/scene.c b/src/client/scene.c
index d560c748dd22491c59eef60f433f5c764bb65139..93a569914489e0e02b7cd2066832d61defd985af 100644 (file)
--- a/src/client/scene.c
+++ b/src/client/scene.c
@@ -35,6 +35,8 @@ bool scene_init()
        scene.loc_model = glGetUniformLocation(scene.prog, "model");
        scene.loc_VP = glGetUniformLocation(scene.prog, "VP");
        scene.loc_daylight = glGetUniformLocation(scene.prog, "daylight");
+       scene.loc_fogColor = glGetUniformLocation(scene.prog, "fogColor");
+       scene.loc_ambientLight = glGetUniformLocation(scene.prog, "ambientLight");
        scene.loc_lightDir = glGetUniformLocation(scene.prog, "lightDir");
        scene.loc_cameraPos = glGetUniformLocation(scene.prog, "cameraPos");
 
@@ -88,11 +90,17 @@ void scene_render(f64 dtime)
 
        frustum_update(scene.VP);
 
+       f32 daylight = get_daylight();
+       f32 ambient_light = f32_mix(0.3f, 0.7f, daylight);
+       v3f32 fog_color = v3f32_mix((v3f32) {0x03, 0x0A, 0x1A}, (v3f32) {0x87, 0xCE, 0xEB}, daylight);
+
        glUseProgram(scene.prog);
        glUniformMatrix4fv(scene.loc_VP, 1, GL_FALSE, scene.VP[0]);
        glUniform3f(scene.loc_lightDir, sunlight_dir[0], sunlight_dir[1], sunlight_dir[2]);
        glUniform3f(scene.loc_cameraPos, camera.eye[0], camera.eye[1], camera.eye[2]);
-       glUniform1f(scene.loc_daylight, get_daylight());
+       glUniform1f(scene.loc_daylight, daylight);
+       glUniform3f(scene.loc_fogColor, fog_color.x / 0xFF * ambient_light, fog_color.y / 0xFF * ambient_light, fog_color.z / 0xFF * ambient_light);
+       glUniform1f(scene.loc_ambientLight, ambient_light);
 
        for (ListPair **pairptr = &scene.objects.first; *pairptr != NULL; ) {
                ListPair *pair = *pairptr;