+// Copyright (C) 2021 Harry Godden (hgn)
+
+// Basic buffers-only version of csRadar
+//=======================================================================================================================
+
+#include "csRadar.h"
+
+// GBuffer shader
+void frag_gbuffer( void *dest, vmf_vert tri[3], float bca, float bcb, float bcc );
+void frag_gbuffer_clear( void *dest );
+
+csr_shader shader_gbuffer =
+{
+ .stride = sizeof(float)*8, // (origin) x,y, (actual height) z
+ .frag = frag_gbuffer,
+ .clear = frag_gbuffer_clear
+};
+
+// Main drawing function
+void draw_buffers( csr_api *api, int bounds_only );
+
+// Extension implementation
+// =========================================================================================================
+
+// API ENTRY
+void csr_ext_main( csr_api *api )
+{
+ if( !csr_init( api ) )
+ return;
+
+ csr_create_target( &api->target, api->resolution, api->resolution, api->sampling_mode, &shader_gbuffer );
+ csr_rt_clear( &api->target );
+
+ // Compute bounds, collect models
+ draw_buffers( api, 1 );
+ csr_auto_fit( &api->target, api->padding );
+ vmf_load_models( api->map );
+
+ // Draw everything
+ draw_buffers( api, 0 );
+}
+
+void csr_ext_exit( csr_api *api )
+{
+ csr_rt_free( &api->target );
+}
+
+void draw_buffers( csr_api *api, int bounds_only )
+{
+ csr_filter filter = { .compute_bounds_only = bounds_only };
+ vmf_map *map = api->map;
+
+ if( api->num_strings == 1 )
+ {
+ // Draw everything
+ csr_vmf_render( &api->target, map, map->root, &filter, NULL, NULL );
+
+ if( !bounds_only )
+ {
+ csr_rt_save_buffers( &api->target, api->output_path, "all" );
+ }
+ }
+ else
+ {
+ // Draw groups
+ for( int i = 1; i < api->num_strings; i ++ )
+ {
+ filter.visgroup = api->strings[ i ];
+ csr_vmf_render( &api->target, map, map->root, &filter, NULL, NULL );
+
+ if( !bounds_only )
+ {
+ csr_rt_save_buffers( &api->target, api->output_path, api->strings[i] );
+ //csr_rt_save_c32f( ... );
+ //csr_rt_save_tga( ... );
+
+ // tar_write_dds( ... );
+
+ csr_rt_clear( &api->target );
+ }
+ }
+ }
+}
+
+void frag_gbuffer( void *dest, vmf_vert tri[3], float bca, float bcb, float bcc )
+{
+ float *dest_colour = (float *)dest;
+
+ v3_muls( tri[0].co, bca, dest_colour );
+ v3_muladds( dest_colour, tri[1].co, bcb, dest_colour );
+ v3_muladds( dest_colour, tri[2].co, bcc, dest_colour );
+
+ // TODO: Normal map
+}
+
+void frag_gbuffer_clear( void *dest )
+{
+ float *dest_colour = (float *)dest;
+ v3_zero( dest_colour );
+}