medfall

commit caf496ee77d09b2eecb802124746c52146789650
parent c1f0195e1343e75b249e890cacbd1f7e95a027c3
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Sat May 20 00:18:17 +0300

Add renderer_clear_fb

Diffstat:
renderer.cc
 | 
11
++++++++++-
renderer.h
 | 
2
++
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/renderer.cc b/renderer.cc
@@ -234,6 +234,7 @@ FB renderer_new_fb( Texture texture, FramebufferAttachment attachment ) {
 
 	FB fb;
 	fb.fbo = fbo;
+	fb.attachment = attachment;
 	fb.texture = texture;
 	return fb;
 }
@@ -596,6 +597,15 @@ static GLenum primitivetype_to_glenum( PrimitiveType primitive_type ) {
 
 static RenderState previous_render_state;
 
+void renderer_clear_fb( FB fb ) {
+	if( fb.fbo != previous_render_state.fb.fbo ) {
+		glBindFramebuffer( GL_DRAW_FRAMEBUFFER, fb.fbo );
+		previous_render_state.fb = fb;
+	}
+
+	glClear( fb.attachment == FB_COLOUR ? GL_COLOR_BUFFER_BIT : GL_DEPTH_BUFFER_BIT );
+}
+
 void renderer_draw_mesh( const Mesh & mesh, const RenderState & state ) {
 	if( state.shader != previous_render_state.shader ) {
 		glUseProgram( state.shader );
@@ -628,7 +638,6 @@ void renderer_draw_mesh( const Mesh & mesh, const RenderState & state ) {
 	// framebuffer
 	if( state.fb.fbo != previous_render_state.fb.fbo ) {
 		glBindFramebuffer( GL_DRAW_FRAMEBUFFER, state.fb.fbo );
-		glClear( GL_DEPTH_BUFFER_BIT ); // TODO TODO TODO
 	}
 
 	// depth writing
diff --git a/renderer.h b/renderer.h
@@ -90,6 +90,7 @@ struct TB {
 
 struct FB {
 	FramebufferObject fbo;
+	FramebufferAttachment attachment;
 	Texture texture;
 };
 
@@ -195,6 +196,7 @@ void renderer_delete_tb( TB ub );
 
 FB renderer_new_fb( TextureConfig texture_format, FramebufferAttachment attachment );
 FB renderer_new_fb( Texture texture, FramebufferAttachment attachment );
+void renderer_clear_fb( FB fb );
 void renderer_delete_fb( FB fb );
 
 Shader renderer_new_shader( ShaderConfig config );