-}
-
-VG_STATIC void fb_init( struct framebuffer *fb )
-{
- i32 ix = vg.window_x / fb->div,
- iy = vg.window_y / fb->div;
-
- glGenFramebuffers( 1, &fb->fb );
- glBindFramebuffer( GL_FRAMEBUFFER, fb->fb );
-
- glGenTextures( 1, &fb->colour );
- glBindTexture( GL_TEXTURE_2D, fb->colour );
- glTexImage2D( GL_TEXTURE_2D, 0, fb->format, ix, iy,
- 0, fb->format, GL_UNSIGNED_BYTE, NULL);
-
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
- glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
- GL_TEXTURE_2D, fb->colour, 0);
-
- glGenRenderbuffers( 1, &fb->rb );
- glBindRenderbuffer( GL_RENDERBUFFER, fb->rb );
- glRenderbufferStorage( GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, ix, iy );
-
- glFramebufferRenderbuffer( GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT,
- GL_RENDERBUFFER, fb->rb );
- glBindFramebuffer( GL_FRAMEBUFFER, 0 );
-
- VG_CHECK_GL_ERR();
- fb->allocated = 1;
-}
-
-VG_STATIC void fb_free( struct framebuffer *fb )
-{
- glDeleteTextures( 1, &fb->colour );
- glDeleteFramebuffers( 1, &fb->fb );
-}
-
-VG_STATIC void fb_bindtex( struct framebuffer *fb, int texture )
-{
- glActiveTexture( GL_TEXTURE0 + texture );
- glBindTexture( GL_TEXTURE_2D, fb->colour );
-}
-
-VG_STATIC void fb_resize( struct framebuffer *fb )
-{
- if( !fb->allocated )
- return;
-
- i32 ix = vg.window_x / fb->div,
- iy = vg.window_y / fb->div;
-
- glBindTexture( GL_TEXTURE_2D, fb->colour );
- glTexImage2D( GL_TEXTURE_2D, 0, fb->format, ix, iy, 0,
- fb->format, GL_UNSIGNED_BYTE, NULL );
-
- glBindRenderbuffer( GL_RENDERBUFFER, fb->rb );
- glRenderbufferStorage( GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, ix, iy );
-}
-
-VG_STATIC void render_fb_resize(void)
-{
- if( gpipeline.ready )
- {
- glBindTexture( GL_TEXTURE_2D, gpipeline.rgb_background );
- glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, vg.window_x, vg.window_y, 0,
- GL_RGB, GL_UNSIGNED_BYTE, NULL );
- }
-}
-
-/* used for drawing player onto */
-VG_STATIC void render_init_temp_buffer(void)
-{
- vg_info( "[render] Allocate temporary framebuffer\n" );
-
- glGenFramebuffers( 1, &gpipeline.fb_background );
- glBindFramebuffer( GL_FRAMEBUFFER, gpipeline.fb_background );
-
- glGenTextures( 1, &gpipeline.rgb_background );
- glBindTexture( GL_TEXTURE_2D, gpipeline.rgb_background );
- glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, vg.window_x, vg.window_y,
- 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
-
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
- glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
- GL_TEXTURE_2D,
- gpipeline.rgb_background, 0);
-
- VG_CHECK_GL_ERR();
-}
-
-/* used for drawing world depth from the top view, used in our water and
- * lighting calculations */
-VG_STATIC void render_init_depthmap_buffer(void)
-{
- vg_info( "[render] Allocate depth map buffer\n" );
-
- glGenFramebuffers( 1, &gpipeline.fb_depthmap );
- glBindFramebuffer( GL_FRAMEBUFFER, gpipeline.fb_depthmap );
-
- glGenTextures( 1, &gpipeline.rgb_depthmap );
- glBindTexture( GL_TEXTURE_2D, gpipeline.rgb_depthmap );
- glTexImage2D( GL_TEXTURE_2D, 0, GL_R32F, 1024, 1024, 0,
- GL_RED, GL_FLOAT, NULL );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
- glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
- vg_tex2d_clamp();
-
- glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
- GL_TEXTURE_2D,
- gpipeline.rgb_depthmap, 0);
-
- VG_CHECK_GL_ERR();
-}
-
-VG_STATIC void render_init_fs_quad(void)
-{
- vg_info( "[render] Allocate quad\n" );
-
- float quad[] = { 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f,
- 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f,
-
- 0.2f, 0.0f, 0.8f, 1.0f, 0.2f, 1.0f,
- 0.2f, 0.0f, 0.8f, 0.0f, 0.8f, 1.0f};
-
- glGenVertexArrays( 1, &gpipeline.fsquad.vao );
- glGenBuffers( 1, &gpipeline.fsquad.vbo );
- glBindVertexArray( gpipeline.fsquad.vao );
- glBindBuffer( GL_ARRAY_BUFFER, gpipeline.fsquad.vbo );
- glBufferData( GL_ARRAY_BUFFER, sizeof(quad), quad, GL_STATIC_DRAW );
- glBindVertexArray( gpipeline.fsquad.vao );
- glVertexAttribPointer( 0, 2, GL_FLOAT, GL_FALSE,
- sizeof(float)*2, (void*)0 );
- glEnableVertexAttribArray( 0 );
-
- VG_CHECK_GL_ERR();
-}
-
-VG_STATIC void render_init_uniform_buffers(void)
-{
- vg_info( "[render] Allocate uniform buffer\n" );
-
- glGenBuffers( 1, &gpipeline.ubo_world_lighting );
- glBindBuffer( GL_UNIFORM_BUFFER, gpipeline.ubo_world_lighting );
- glBufferData( GL_UNIFORM_BUFFER, sizeof(struct ub_world_lighting),
- NULL, GL_DYNAMIC_DRAW );
-
- render_update_lighting_ub();
- glBindBufferBase( GL_UNIFORM_BUFFER, 0, gpipeline.ubo_world_lighting );
-
- VG_CHECK_GL_ERR();
-}
-
-VG_STATIC void render_init(void)
-{
- shader_blit_register();
- shader_blitblur_register();
- shader_standard_register();
- shader_vblend_register();
-
- vg_acquire_thread_sync();
- {
- render_init_temp_buffer();
- render_init_depthmap_buffer();
- render_init_fs_quad();
- render_init_uniform_buffers();
-
- glBindFramebuffer( GL_FRAMEBUFFER, 0 );
- gpipeline.ready = 1;
- }
-
- vg_release_thread_sync();
-}
-
-/*
- * Utility
- */
-VG_STATIC void render_fsquad(void)
-{
- glBindVertexArray( gpipeline.fsquad.vao );
- glDrawArrays( GL_TRIANGLES, 0, 6 );
-}
-
-VG_STATIC void render_fsquad1(void)
-{
- glBindVertexArray( gpipeline.fsquad.vao );
- glDrawArrays( GL_TRIANGLES, 6, 6 );
-}
-
-#endif /* RENDER_H */