frame rate independence

[carveJwlIkooP6JGAAIwe30JlM.git] / world_gate.h

diff --git a/world_gate.h b/world_gate.h
index 8434fb1e6c27a3ed45c6515478766dd319b07ad6..21cabe9d22150fdd79ff29666b2a3a32a8c019dc 100644 (file)
--- a/world_gate.h
+++ b/world_gate.h
@@ -1,27 +1,34 @@
+/*
+ * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved
+ */
+
 #ifndef WORLD_GATE_H
 #define WORLD_GATE_H
 
+#define GATE_RENDER_PERFORMANCE
+
 #include "common.h"
 #include "model.h"
 #include "render.h"
-#include "shaders/gate.h"
-#include "shaders/gatelq.h"
+
+#ifndef GATE_RENDER_PERFORMANCE
+  #include "shaders/gate.h"
+#else
+  #include "shaders/gatelq.h"
+#endif
+
 #include "world_water.h"
 
+
 typedef struct teleport_gate teleport_gate;
 
 static struct
 {
    struct framebuffer fb;
    glmesh mdl;
-
-   int high_qual; /* If in high performance mode, we don't use RT's, and
-                      instead use stencil buffers.
-                      There is therefore no heat warp effect. */
 }
 grender =
 {
-   .high_qual = 0,
    .fb = {
       .format = GL_RGB,
       .div = 1
@@ -42,40 +49,24 @@ static void gate_transform_update( teleport_gate *gate )
    m4x3_mul( gate->recv_to_world, to_local, gate->transport );
 }
 
-static int world_gates_init(void)
+static void world_gates_init(void)
 {
    vg_info( "world_gates_init\n" );
+
+#ifndef GATE_RENDER_PERFORMANCE
    shader_gate_register();
+#else
    shader_gatelq_register();
+#endif
 
    mdl_header *mgate = mdl_load( "models/rs_gate.mdl" );
 
-   if( vg_acquire_thread_sync(1) )
+   vg_acquire_thread_sync();
    {
-      if( !fb_init( &grender.fb ) )
-      {
-         free( mgate );
-         vg_release_thread_sync(1);
-         return 0;
-      }
-
-      if( !mdl_unpack_glmesh( mgate, &grender.mdl ) )
-      {
-         free( mgate );
-         fb_free( &grender.fb );
-         vg_release_thread_sync(1);
-         return 0;
-      }
-
-      vg_release_thread_sync(1);
+      fb_init( &grender.fb );
+      mdl_unpack_glmesh( mgate, &grender.mdl );
    }
-   else
-   {
-      free( mgate );
-      return 0;
-   }
-
-   return 1;
+   vg_release_thread_sync();
 }
 
 static void world_gates_free(void*_)
@@ -146,22 +137,19 @@ static int render_gate( teleport_gate *gate, v3f viewpos, m4x3f camera )
 
    m4x4_mul( projection, view, projection );
 
-   if( grender.high_qual )
-   {
+#ifndef GATE_RENDER_PERFORMANCE
       fb_use( &grender.fb );
       glClearColor( 0.11f, 0.35f, 0.37f, 1.0f );
       glClear( GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT );
-   }
-   else
-   {
+#else
       shader_gatelq_use();
-      shader_gatelq_uPv( vg_pv );
+      shader_gatelq_uPv( vg.pv );
       shader_gatelq_uMdl( gate_xform );
       shader_gatelq_uCam( viewpos );
-      shader_gatelq_uTime( vg_time*0.25f );
+      shader_gatelq_uTime( vg.time*0.25f );
       shader_gatelq_uInvRes( (v2f){
-            1.0f / (float)vg_window_x,
-            1.0f / (float)vg_window_y });
+            1.0f / (float)vg.window_x,
+            1.0f / (float)vg.window_y });
 
       glEnable( GL_STENCIL_TEST );
       glStencilOp( GL_KEEP, GL_KEEP, GL_REPLACE );  
@@ -174,14 +162,14 @@ static int render_gate( teleport_gate *gate, v3f viewpos, m4x3f camera )
       glClear( GL_DEPTH_BUFFER_BIT );
       glStencilFunc( GL_EQUAL, 1, 0xFF );
       glStencilMask( 0x00 ); 
-   }
+#endif
 
    render_world( projection, cam_new );
 
-   if( grender.high_qual )
-   {
+#ifndef GATE_RENDER_PERFORMANCE
+
       /*
-       * TODO: Need to find a way to draw a stencil buffer into the water 
+       * NOTE: Need to find a way to draw a stencil buffer into the water 
        *       rendering 
        */
 
@@ -214,9 +202,7 @@ static int render_gate( teleport_gate *gate, v3f viewpos, m4x3f camera )
       mesh_draw( &grender.mdl );
 
       glDisable(GL_BLEND);
-   }
-   else
-   {
+#else
       glDisable( GL_STENCIL_TEST );
 
       render_water_texture( cam_new );
@@ -228,7 +214,7 @@ static int render_gate( teleport_gate *gate, v3f viewpos, m4x3f camera )
       glStencilMask( 0xFF );
       glStencilFunc( GL_ALWAYS, 1, 0xFF );
       glDisable( GL_STENCIL_TEST );
-   }
+#endif
 
    return 1;
 }