From 2f49239a9fa7b897962c3ed033afb02a87a47245 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dominik=20Madar=C3=A1sz?= <zaklaus@outlook.com>
Date: Thu, 21 Mar 2024 07:47:28 +0100
Subject: [PATCH] improve shader binding for PBR

---
 engine/joint/v4k.h        | 3 +++
 engine/split/v4k_render.c | 3 +++
 engine/v4k.c              | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/engine/joint/v4k.h b/engine/joint/v4k.h
index 163a215..8caf0d7 100644
--- a/engine/joint/v4k.h
+++ b/engine/joint/v4k.h
@@ -373021,6 +373021,8 @@ void model_set_uniforms(model_t m, int shader, mat44 mv, mat44 proj, mat44 view,
     }
 
     if (m.shading == SHADING_PBR) {
+        handle old_shader = last_shader;
+        shader_bind(shader);
         shader_vec2( "resolution", vec2(window_width(),window_height()));
         
         bool has_tex_skysphere = m.sky_refl.id != texture_checker().id;
@@ -373037,6 +373039,7 @@ void model_set_uniforms(model_t m, int shader, mat44 mv, mat44 proj, mat44 view,
         }
         shader_texture( "tex_brdf_lut", brdf_lut() );
         shader_uint( "frame_count", (unsigned)window_frame() );
+        shader_bind(old_shader);
     }
 }
 static
diff --git a/engine/split/v4k_render.c b/engine/split/v4k_render.c
index c611361..e0f5f9a 100644
--- a/engine/split/v4k_render.c
+++ b/engine/split/v4k_render.c
@@ -2994,6 +2994,8 @@ void model_set_uniforms(model_t m, int shader, mat44 mv, mat44 proj, mat44 view,
     }
 
     if (m.shading == SHADING_PBR) {
+        handle old_shader = last_shader;
+        shader_bind(shader);
         shader_vec2( "resolution", vec2(window_width(),window_height()));
         
         bool has_tex_skysphere = m.sky_refl.id != texture_checker().id;
@@ -3010,6 +3012,7 @@ void model_set_uniforms(model_t m, int shader, mat44 mv, mat44 proj, mat44 view,
         }
         shader_texture( "tex_brdf_lut", brdf_lut() );
         shader_uint( "frame_count", (unsigned)window_frame() );
+        shader_bind(old_shader);
     }
 }
 static
diff --git a/engine/v4k.c b/engine/v4k.c
index b9adbc5..0157d1d 100644
--- a/engine/v4k.c
+++ b/engine/v4k.c
@@ -20168,6 +20168,8 @@ void model_set_uniforms(model_t m, int shader, mat44 mv, mat44 proj, mat44 view,
     }
 
     if (m.shading == SHADING_PBR) {
+        handle old_shader = last_shader;
+        shader_bind(shader);
         shader_vec2( "resolution", vec2(window_width(),window_height()));
         
         bool has_tex_skysphere = m.sky_refl.id != texture_checker().id;
@@ -20184,6 +20186,7 @@ void model_set_uniforms(model_t m, int shader, mat44 mv, mat44 proj, mat44 view,
         }
         shader_texture( "tex_brdf_lut", brdf_lut() );
         shader_uint( "frame_count", (unsigned)window_frame() );
+        shader_bind(old_shader);
     }
 }
 static