-#include "camera.h"
-#include "world.h"
-
-VG_STATIC GLuint tex_terrain_noise;
-
-VG_STATIC void async_world_render_init( void *payload, u32 size )
-{
- vg_info( "Allocate uniform buffers\n" );
- for( int i=0; i<4; i++ ){
- world_instance *world = &world_global.worlds[i];
- world->ubo_bind_point = i;
-
- glGenBuffers( 1, &world->ubo_lighting );
- glBindBuffer( GL_UNIFORM_BUFFER, world->ubo_lighting );
- glBufferData( GL_UNIFORM_BUFFER, sizeof(struct ub_world_lighting),
- NULL, GL_DYNAMIC_DRAW );
-
- glBindBufferBase( GL_UNIFORM_BUFFER, i, world->ubo_lighting );
- VG_CHECK_GL_ERR();
- }
-
- vg_info( "Allocate frame buffers\n" );
- for( int i=0; i<4; i++ ){
- world_instance *world = &world_global.worlds[i];
- struct framebuffer *fb = &world->heightmap;
-
- fb->display_name = NULL;
- fb->link = NULL;
- fb->fixed_w = 1024;
- fb->fixed_h = 1024;
- fb->resolution_div = 0;
-
- fb->attachments[0].display_name = NULL;
- fb->attachments[0].purpose = k_framebuffer_attachment_type_texture;
- fb->attachments[0].internalformat = GL_RG16F;
- fb->attachments[0].format = GL_RG;
- fb->attachments[0].type = GL_FLOAT;
- fb->attachments[0].attachment = GL_COLOR_ATTACHMENT0;
-
- fb->attachments[1].purpose = k_framebuffer_attachment_type_none;
- fb->attachments[2].purpose = k_framebuffer_attachment_type_none;
- fb->attachments[3].purpose = k_framebuffer_attachment_type_none;
- fb->attachments[4].purpose = k_framebuffer_attachment_type_none;
-
- render_fb_allocate( fb );
- }
-}
-
-VG_STATIC void world_render_init(void)
-{
- vg_info( "Loading default world textures\n" );
-
- vg_tex2d_load_qoi_async_file( "textures/garbage.qoi",
- VG_TEX2D_NEAREST|VG_TEX2D_REPEAT,
- &tex_terrain_noise );
-
- vg_async_call( async_world_render_init, NULL, 0 );
-}
-
-VG_STATIC void world_link_lighting_ub( world_instance *world, GLuint shader )
-{
- GLuint idx = glGetUniformBlockIndex( shader, "ub_world_lighting" );
- glUniformBlockBinding( shader, idx, world->ubo_bind_point );
-}
-
-VG_STATIC void world_bind_position_texture( world_instance *world,
- GLuint shader, GLuint location,
- int slot )
-{
- render_fb_bind_texture( &world->heightmap, 0, slot );
- glUniform1i( location, slot );
-}
-
-VG_STATIC void world_bind_light_array( world_instance *world,
- GLuint shader, GLuint location,
- int slot )
-{
- glActiveTexture( GL_TEXTURE0 + slot );
- glBindTexture( GL_TEXTURE_BUFFER, world->tex_light_entities );
- glUniform1i( location, slot );
-}
-
-VG_STATIC void world_bind_light_index( world_instance *world,
- GLuint shader, GLuint location,
- int slot )
-{
- glActiveTexture( GL_TEXTURE0 + slot );
- glBindTexture( GL_TEXTURE_3D, world->tex_light_cubes );
- glUniform1i( location, slot );
-}
-
-VG_STATIC void render_world_depth( world_instance *world, camera *cam );
-
-/*
- * Rendering
- */
-
-VG_STATIC void bind_terrain_noise(void)
-{
- glActiveTexture( GL_TEXTURE0 );
- glBindTexture( GL_TEXTURE_2D, tex_terrain_noise );
-}
-
-struct world_pass{
- camera *cam;
- enum mdl_shader shader;
- enum geo_type geo_type;
-
- void (*fn_bind_textures)( world_instance *world,
- struct world_surface *mat );
- void (*fn_set_mdl)( m4x3f mdl );
- void (*fn_set_uPvmPrev)( m4x4f pvm );
-};
-
-VG_STATIC void world_render_if( world_instance *world, struct world_pass *pass )
-{
- for( int i=0; i<world->surface_count; i++ ){
- struct world_surface *mat = &world->surfaces[i];
-
- if( mat->info.shader == pass->shader ){
- mdl_submesh *sm;
-
- if( pass->geo_type == k_geo_type_solid )
- sm = &mat->sm_geo;
- else
- sm = &mat->sm_no_collide;
-
- if( !sm->indice_count )
- continue;
-
- m4x3f mmdl;
- m4x3_identity( mmdl );
- pass->fn_set_mdl( mmdl );
- pass->fn_set_uPvmPrev( pass->cam->mtx_prev.pv );
-
- pass->fn_bind_textures( world, mat );
- mdl_draw_submesh( sm );
-
- for( u32 j=0; j<mdl_arrcount( &world->ent_traffic ); j++ ){
- ent_traffic *traffic = mdl_arritm( &world->ent_traffic, j );
-
- for( u32 k=0; k<traffic->submesh_count; k++ ){
- sm = mdl_arritm( &world->meta.submeshs,
- traffic->submesh_start+k );
-
- q_m3x3( traffic->transform.q, mmdl );
- v3_copy( traffic->transform.co, mmdl[3] );
-
- m4x4f m4mdl;
- m4x3_expand( mmdl, m4mdl );
- m4x4_mul( pass->cam->mtx_prev.pv, m4mdl, m4mdl );
-
- pass->fn_set_mdl( mmdl );
- pass->fn_set_uPvmPrev( m4mdl );
-
- mdl_draw_submesh( sm );
- }
- }
- }
- }
-}
-
-VG_STATIC
-void world_render_both_stages( world_instance *world, struct world_pass *pass )
-{
- mesh_bind( &world->mesh_geo );
- pass->geo_type = k_geo_type_solid;
- world_render_if( world, pass );
-
- glDisable( GL_CULL_FACE );
- mesh_bind( &world->mesh_no_collide );
- pass->geo_type = k_geo_type_nonsolid;
- world_render_if( world, pass );
- glEnable( GL_CULL_FACE );
-}
-
-VG_STATIC void bindpoint_diffuse_texture1( world_instance *world,
- struct world_surface *mat )
-
-{
- glActiveTexture( GL_TEXTURE1 );
- glBindTexture( GL_TEXTURE_2D, world->textures[ mat->info.tex_diffuse ] );
-}
-
-VG_STATIC void render_world_vb( world_instance *world, camera *cam )
-{
- shader_scene_vertex_blend_use();
- shader_scene_vertex_blend_uTexGarbage(0);
- shader_scene_vertex_blend_uTexGradients(1);
- world_link_lighting_ub( world, _shader_scene_vertex_blend.id );
- world_bind_position_texture( world, _shader_scene_vertex_blend.id,
- _uniform_scene_vertex_blend_g_world_depth, 2 );
- world_bind_light_array( world, _shader_scene_vertex_blend.id,
- _uniform_scene_vertex_blend_uLightsArray, 3 );
- world_bind_light_index( world, _shader_scene_vertex_blend.id,
- _uniform_scene_vertex_blend_uLightsIndex, 4 );
-
- glActiveTexture( GL_TEXTURE0 );
- glBindTexture( GL_TEXTURE_2D, tex_terrain_noise );
-
- shader_scene_vertex_blend_uPv( cam->mtx.pv );
- shader_scene_vertex_blend_uCamera( cam->transform[3] );
-
- struct world_pass pass = {
- .shader = k_shader_standard_vertex_blend,
- .cam = cam,
- .fn_bind_textures = bindpoint_diffuse_texture1,
- .fn_set_mdl = shader_scene_vertex_blend_uMdl,
- .fn_set_uPvmPrev = shader_scene_vertex_blend_uPvmPrev,
- };
-
- world_render_both_stages( world, &pass );
-}
-
-VG_STATIC void render_world_standard( world_instance *world, camera *cam )
-{
- shader_scene_standard_use();
- shader_scene_standard_uTexGarbage(0);
- shader_scene_standard_uTexMain(1);
- shader_scene_standard_uPv( cam->mtx.pv );
-
- world_link_lighting_ub( world, _shader_scene_standard.id );
- world_bind_position_texture( world, _shader_scene_standard.id,
- _uniform_scene_standard_g_world_depth, 2 );
- world_bind_light_array( world, _shader_scene_standard.id,
- _uniform_scene_standard_uLightsArray, 3 );
- world_bind_light_index( world, _shader_scene_standard.id,
- _uniform_scene_standard_uLightsIndex, 4 );
-
- bind_terrain_noise();
- shader_scene_standard_uCamera( cam->transform[3] );
-
- struct world_pass pass = {
- .shader = k_shader_standard,
- .cam = cam,
- .fn_bind_textures = bindpoint_diffuse_texture1,
- .fn_set_mdl = shader_scene_standard_uMdl,
- .fn_set_uPvmPrev = shader_scene_standard_uPvmPrev,
- };
-
- world_render_both_stages( world, &pass );
-}