X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;ds=sidebyside;f=render.h;h=209bed692d5bc5777fbb3db122b4410ab2a96b56;hb=47941822dae18a018c985847b052e70214a3ccc6;hp=706cf9b14de229dabdadba2b419e16135c5dd179;hpb=d13f2700b1773551307685cc7c34c804ccd6d664;p=carveJwlIkooP6JGAAIwe30JlM.git diff --git a/render.h b/render.h index 706cf9b..209bed6 100644 --- a/render.h +++ b/render.h @@ -1,16 +1,19 @@ +/* + * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved + */ + #include "common.h" #include "model.h" #include "shaders/blit.h" #include "shaders/standard.h" #include "shaders/vblend.h" -#include "shaders/unlit.h" -static void render_water_texture( m4x3f camera ); -static void render_water_surface( m4x4f pv, m4x3f camera ); -static void render_world( m4x4f projection, m4x3f camera ); -static void shader_link_standard_ub( GLuint shader, int texture_id ); -static void render_world_depth( m4x4f projection, m4x3f camera ); +VG_STATIC void render_water_texture( m4x3f camera ); +VG_STATIC void render_water_surface( m4x4f pv, m4x3f camera ); +VG_STATIC void render_world( m4x4f projection, m4x3f camera ); +VG_STATIC void shader_link_standard_ub( GLuint shader, int texture_id ); +VG_STATIC void render_world_depth( m4x4f projection, m4x3f camera ); #ifndef RENDER_H #define RENDER_H @@ -24,7 +27,7 @@ struct framebuffer int allocated; }; -static struct pipeline +VG_STATIC struct pipeline { float fov; glmesh fsquad; @@ -100,7 +103,7 @@ gpipeline = /* * http://www.terathon.com/lengyel/Lengyel-Oblique.pdf */ -static void plane_clip_projection( m4x4f mat, v4f plane ) +VG_STATIC void plane_clip_projection( m4x4f mat, v4f plane ) { v4f c = { @@ -118,18 +121,18 @@ static void plane_clip_projection( m4x4f mat, v4f plane ) mat[3][2] = c[3]; } -static void pipeline_projection( m4x4f mat, float nearz, float farz ) +VG_STATIC void pipeline_projection( m4x4f mat, float nearz, float farz ) { m4x4_projection( mat, gpipeline.fov, - (float)vg_window_x / (float)vg_window_y, + (float)vg.window_x / (float)vg.window_y, nearz, farz ); } /* * Shaders */ -static void shader_link_standard_ub( GLuint shader, int texture_id ) +VG_STATIC void shader_link_standard_ub( GLuint shader, int texture_id ) { GLuint idx = glGetUniformBlockIndex( shader, "ub_world_lighting" ); glUniformBlockBinding( shader, idx, 0 ); @@ -139,7 +142,7 @@ static void shader_link_standard_ub( GLuint shader, int texture_id ) glUniform1i( glGetUniformLocation( shader, "g_world_depth" ), texture_id ); } -static void render_update_lighting_ub(void) +VG_STATIC void render_update_lighting_ub(void) { struct ub_world_lighting *winf = &gpipeline.ub_world_lighting; int c = 0; @@ -175,24 +178,24 @@ static void render_update_lighting_ub(void) * Framebuffers */ -static void fb_use( struct framebuffer *fb ) +VG_STATIC void fb_use( struct framebuffer *fb ) { if( !fb ) { glBindFramebuffer( GL_FRAMEBUFFER, 0 ); - glViewport( 0, 0, vg_window_x, vg_window_y ); + glViewport( 0, 0, vg.window_x, vg.window_y ); } else { glBindFramebuffer( GL_FRAMEBUFFER, fb->fb ); - glViewport( 0, 0, vg_window_x / fb->div, vg_window_y / fb->div ); + glViewport( 0, 0, vg.window_x / fb->div, vg.window_y / fb->div ); } } -static void fb_init( struct framebuffer *fb ) +VG_STATIC void fb_init( struct framebuffer *fb ) { - i32 ix = vg_window_x / fb->div, - iy = vg_window_y / fb->div; + i32 ix = vg.window_x / fb->div, + iy = vg.window_y / fb->div; glGenFramebuffers( 1, &fb->fb ); glBindFramebuffer( GL_FRAMEBUFFER, fb->fb ); @@ -219,25 +222,25 @@ static void fb_init( struct framebuffer *fb ) fb->allocated = 1; } -static void fb_free( struct framebuffer *fb ) +VG_STATIC void fb_free( struct framebuffer *fb ) { glDeleteTextures( 1, &fb->colour ); glDeleteFramebuffers( 1, &fb->fb ); } -static void fb_bindtex( struct framebuffer *fb, int texture ) +VG_STATIC void fb_bindtex( struct framebuffer *fb, int texture ) { glActiveTexture( GL_TEXTURE0 + texture ); glBindTexture( GL_TEXTURE_2D, fb->colour ); } -static void fb_resize( struct framebuffer *fb ) +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; + 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, @@ -247,117 +250,121 @@ static void fb_resize( struct framebuffer *fb ) glRenderbufferStorage( GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, ix, iy ); } -static void render_fb_resize(void) +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, + glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, vg.window_x, vg.window_y, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL ); } } -/* - * Vg - */ -static void render_init(void) +/* 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 ); + 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 }; + + 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_standard_register(); shader_vblend_register(); - shader_unlit_register(); vg_acquire_thread_sync(); { - vg_info( "Allocating framebuffers\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 ); - glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, - GL_TEXTURE_2D, - gpipeline.rgb_background, 0); - - VG_CHECK_GL_ERR(); - - /* - * World depth map, maybe this should be moved to world.h - * TODO: review - */ - 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(); - - 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 }; - - 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(); - - 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(); + render_init_temp_buffer(); + render_init_depthmap_buffer(); + render_init_fs_quad(); + render_init_uniform_buffers(); glBindFramebuffer( GL_FRAMEBUFFER, 0 ); - vg_success( "Done\n" ); - gpipeline.ready = 1; } vg_release_thread_sync(); } -static void render_free(void *_) -{ - glDeleteVertexArrays( 1, &gpipeline.fsquad.vao ); - glDeleteBuffers( 1, &gpipeline.fsquad.vbo ); - - glDeleteFramebuffers( 1, &gpipeline.fb_background ); - glDeleteFramebuffers( 1, &gpipeline.fb_depthmap ); - - glDeleteTextures( 1, &gpipeline.rgb_background ); - glDeleteTextures( 1, &gpipeline.rgb_depthmap ); -} - /* * Utility */ -static void render_fsquad(void) +VG_STATIC void render_fsquad(void) { glBindVertexArray( gpipeline.fsquad.vao ); glDrawArrays( GL_TRIANGLES, 0, 6 );