X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=render.h;h=209bed692d5bc5777fbb3db122b4410ab2a96b56;hb=47941822dae18a018c985847b052e70214a3ccc6;hp=8285317aaf5106f757979b2ca70600e753efecc0;hpb=ecc4dfbfb3adf91d2dfc03ba0ec9a821fcc2390c;p=carveJwlIkooP6JGAAIwe30JlM.git diff --git a/render.h b/render.h index 8285317..209bed6 100644 --- a/render.h +++ b/render.h @@ -1,10 +1,33 @@ -#ifndef RENDER_H -#define RENDER_H +/* + * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved + */ #include "common.h" #include "model.h" -static struct pipeline +#include "shaders/blit.h" +#include "shaders/standard.h" +#include "shaders/vblend.h" + +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 + +struct framebuffer +{ + GLuint fb, colour, rb; + int div; + GLuint format; + + int allocated; +}; + +VG_STATIC struct pipeline { float fov; glmesh fsquad; @@ -16,26 +39,63 @@ static struct pipeline struct ub_world_lighting { /* v3f (padded) */ - v4f g_directional, - g_sun_colour, - g_shadow_colour; + v4f g_light_colours[3], + g_light_directions[3], + g_ambient_colour; v4f g_water_plane, g_depth_bounds; + float g_water_fog; + int g_light_count; + int g_light_preview; } ub_world_lighting; + struct light_widget + { + int enabled; + v2f dir; + v3f colour; + } + widgets[3]; + + float shadow_spread, shadow_length; + GLuint fb_depthmap, rgb_depthmap; GLuint ubo_world_lighting, ubo_world; -} -gpipeline; -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 render_world_depth( m4x4f projection, m4x3f camera ); + int ready; +} +gpipeline = +{ + .widgets = + { + { + .enabled = 1, + .colour = { 1.36f, 1.35f, 1.01f }, + .dir = { 0.63f, -0.08f } + }, + { + .enabled = 1, + .colour = { 0.33f, 0.56f, 0.64f }, + .dir = { -2.60f, -0.13f } + }, + { + .enabled = 1, + .colour = { 0.05f, 0.05f, 0.23f }, + .dir = { 2.60f, -0.84f } + } + }, + .shadow_spread = 0.65f, + .shadow_length = 9.50f, + + .ub_world_lighting = + { + .g_ambient_colour = { 0.09f, 0.03f, 0.07f } + } +}; /* * Matrix Projections @@ -43,7 +103,7 @@ static void render_world_depth( m4x4f projection, m4x3f camera ); /* * 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 = { @@ -61,18 +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 ); @@ -82,53 +142,60 @@ 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) { - glBindBuffer( GL_UNIFORM_BUFFER, gpipeline.ubo_world_lighting ); + struct ub_world_lighting *winf = &gpipeline.ub_world_lighting; + int c = 0; - glBufferSubData( GL_UNIFORM_BUFFER, 0, sizeof(struct ub_world_lighting), - &gpipeline.ub_world_lighting ); -} + for( int i=0; i<3; i++ ) + { + struct light_widget *lw = &gpipeline.widgets[i]; + + if( lw->enabled ) + { + float pitch = lw->dir[0], + yaw = lw->dir[1], + xz = cosf( pitch ); + + v3_copy( (v3f){ xz*cosf(yaw), sinf(pitch), xz*sinf(yaw) }, + winf->g_light_directions[c] ); + v3_copy( lw->colour, winf->g_light_colours[c] ); + + c ++; + } + } -static void render_alloc_ub(void) -{ - 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 ); + winf->g_light_count = c; + winf->g_light_directions[0][3] = gpipeline.shadow_length; + winf->g_light_colours[0][3] = gpipeline.shadow_spread; - render_update_lighting_ub(); - glBindBufferBase( GL_UNIFORM_BUFFER, 0, gpipeline.ubo_world_lighting ); + glBindBuffer( GL_UNIFORM_BUFFER, gpipeline.ubo_world_lighting ); + glBufferSubData( GL_UNIFORM_BUFFER, 0, sizeof(struct ub_world_lighting), + &gpipeline.ub_world_lighting ); } /* * Framebuffers */ -struct framebuffer -{ - GLuint fb, colour, rb; - int div; - GLuint format; -}; -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 ); @@ -149,18 +216,31 @@ static void fb_init( struct framebuffer *fb ) glFramebufferRenderbuffer( GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, fb->rb ); + glBindFramebuffer( GL_FRAMEBUFFER, 0 ); + + VG_CHECK_GL_ERR(); + fb->allocated = 1; } -static void fb_bindtex( struct framebuffer *fb, int texture ) +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 ); } -static void fb_resize( struct framebuffer *fb ) +VG_STATIC void fb_resize( struct framebuffer *fb ) { - i32 ix = vg_window_x / fb->div, - iy = vg_window_y / fb->div; + 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, @@ -170,24 +250,27 @@ 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) { - 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 ); + 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 ); + } } -/* - * 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, + 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 ); @@ -196,10 +279,15 @@ static void render_init(void) GL_TEXTURE_2D, gpipeline.rgb_background, 0); - /* - * World depth map, maybe this should be moved to world.h - * TODO: review - */ + 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 ); @@ -215,6 +303,13 @@ static void render_init(void) 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 }; @@ -227,20 +322,49 @@ static void render_init(void) glVertexAttribPointer( 0, 2, GL_FLOAT, GL_FALSE, sizeof(float)*2, (void*)0 ); glEnableVertexAttribArray( 0 ); - VG_CHECK_GL(); - render_alloc_ub(); + VG_CHECK_GL_ERR(); } -static void render_free(void) +VG_STATIC void render_init_uniform_buffers(void) { - /* TODO: ... */ + 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(); + + 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 */ -static void render_fsquad(void) +VG_STATIC void render_fsquad(void) { glBindVertexArray( gpipeline.fsquad.vao ); glDrawArrays( GL_TRIANGLES, 0, 6 );