rt(gl): draw final pass to output targets

librashader-runtime-gl/src/filter_chain/filter_impl.rs

@@ -361,12 +361,25 @@ impl<T: GLInterface> FilterChainImpl<T> {
         // try to hint the optimizer
         assert_eq!(last.len(), 1);
         if let Some(pass) = last.iter_mut().next() {
+            let index = passes_len - 1;
             source.filter = pass.config.filter;
             source.mip_filter = pass.config.filter;
             source.wrap_mode = pass.config.wrap_mode;
 
+            let target = &self.output_framebuffers[index];
             pass.draw(
-                passes_len - 1,
+                index,
+                &self.common,
+                pass.config.get_frame_count(frame_count),
+                options,
+                viewport,
+                &original,
+                &source,
+                RenderTarget::viewport_with_output(target, viewport),
+            );
+
+            pass.draw(
+                index,
                 &self.common,
                 pass.config.get_frame_count(frame_count),
                 options,

librashader-runtime-gl/src/util.rs

@@ -8,12 +8,7 @@ pub unsafe fn gl_compile_shader(stage: GLenum, source: &str) -> error::Result<GL
     let (shader, compile_status) = unsafe {
         let lens = [source.len() as GLint];
         let shader = gl::CreateShader(stage);
-        gl::ShaderSource(
+        gl::ShaderSource(shader, 1, &source.as_ptr().cast(), lens.as_ptr());
-            shader,
-            1,
-            &source.as_ptr().cast(),
-            lens.as_ptr(),
-        );
         gl::CompileShader(shader);
         let mut compile_status = 0;
         gl::GetShaderiv(shader, gl::COMPILE_STATUS, &mut compile_status);

librashader-runtime-gl/tests/triangle.rs

@@ -9,7 +9,7 @@ fn triangle_gl() {
 
     unsafe {
         let mut filter = FilterChainGL::load_from_path(
-            "../test/shaders_slang/crt/crt-royale.slangp",
+            "../test/shaders_slang/test/feedback.slangp",
             Some(&FilterChainOptionsGL {
                 glsl_version: 0,
                 use_dsa: false,