665 lines
25 KiB
C
665 lines
25 KiB
C
// PBR model viewer. Based on Foxotron by @gargaj + cce/Peisik (UNLICENSE).
|
|
// - rlyeh, public domain.
|
|
//
|
|
// @todo: Middle mouse button to pan camera @todo
|
|
|
|
#include "v4k.h"
|
|
|
|
#if is(tcc) && !is(win32) // @todo: remove this & test on linux
|
|
int log2_64 (uint64_t value) {
|
|
const int tab64[64] = {
|
|
63, 0, 58, 1, 59, 47, 53, 2,
|
|
60, 39, 48, 27, 54, 33, 42, 3,
|
|
61, 51, 37, 40, 49, 18, 28, 20,
|
|
55, 30, 34, 11, 43, 14, 22, 4,
|
|
62, 57, 46, 52, 38, 26, 32, 41,
|
|
50, 36, 17, 19, 29, 10, 13, 21,
|
|
56, 45, 25, 31, 35, 16, 9, 12,
|
|
44, 24, 15, 8, 23, 7, 6, 5};
|
|
value |= value >> 1;
|
|
value |= value >> 2;
|
|
value |= value >> 4;
|
|
value |= value >> 8;
|
|
value |= value >> 16;
|
|
value |= value >> 32;
|
|
return tab64[((uint64_t)((value - (value >> 1))*0x07EDD5E59A4E28C2)) >> 58];
|
|
}
|
|
#define log2 log2_64
|
|
#endif
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// textures
|
|
|
|
texture_t *LoadTextureRGBA8( const char *pathfile, unsigned flags ) {
|
|
int flags_hdr = strendi(pathfile, ".hdr") ? TEXTURE_FLOAT | TEXTURE_RGBA : 0;
|
|
texture_t t = texture(pathfile, flags | TEXTURE_LINEAR | TEXTURE_MIPMAPS | TEXTURE_REPEAT | flags_hdr);
|
|
if( t.id == texture_checker().id ) {
|
|
return NULL;
|
|
}
|
|
texture_t *tex = CALLOC(1, sizeof(texture_t));
|
|
*tex = t;
|
|
return tex;
|
|
}
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// models
|
|
|
|
typedef struct Mesh {
|
|
GLuint vao, vbo, ibo;
|
|
|
|
int vert_stride;
|
|
void *vert_stream;
|
|
int num_verts, num_tris;
|
|
|
|
int material_idx;
|
|
bool transparent;
|
|
|
|
vec3 aabb_min, aabb_max;
|
|
} Mesh;
|
|
|
|
typedef struct Model {
|
|
array(Mesh) meshes;
|
|
array(pbr_material_t) materials;
|
|
unsigned shader;
|
|
} Model;
|
|
|
|
bool ModelLoad( Model *G, const char *_path );
|
|
void ModelDestroy( Model *G );
|
|
void ModelRebind( Model *G, unsigned shader );
|
|
void ModelRender( Model *G, const mat44 _worldRootMatrix );
|
|
|
|
void ModelDestroy( Model *G) {
|
|
for( int i = 0, end = array_count(G->materials); i < end; ++i ) {
|
|
pbr_material_destroy(&G->materials[i]);
|
|
}
|
|
array_free(G->materials);
|
|
|
|
for( int i = 0, end = array_count(G->meshes); i < end; ++i ) {
|
|
Mesh *it = &G->meshes[i];
|
|
glDeleteBuffers( 1, &it->ibo );
|
|
glDeleteBuffers( 1, &it->vbo );
|
|
glDeleteVertexArrays( 1, &it->vao );
|
|
}
|
|
array_free(G->meshes);
|
|
}
|
|
|
|
bool ModelLoad( Model *G, const char *_path ) {
|
|
ModelDestroy(G);
|
|
|
|
// -------------------------------------------------------------------------
|
|
Model g = {0};
|
|
*G = g;
|
|
|
|
model_t m = model(_path, 0);
|
|
|
|
int scn_num_meshes = m.num_meshes;
|
|
int scn_num_materials = array_count(m.materials);
|
|
|
|
// -------------------------------------------------------------------------
|
|
|
|
for( int i = 0; i < scn_num_materials; i++ ) {
|
|
const char *name = m.materials[i].name;
|
|
|
|
PRINTF("Loading material %d/%d: '%s'\n", i + 1, scn_num_materials, name);
|
|
|
|
pbr_material_t mt;
|
|
pbr_material(&mt, name);
|
|
|
|
array_push(G->materials, mt);
|
|
}
|
|
|
|
for( int i = 0; i < scn_num_meshes; i++ ) {
|
|
PRINTF("Loading mesh %d/%d\n", i + 1, scn_num_meshes);
|
|
|
|
int verts = m.num_verts;
|
|
int faces = m.num_triangles;
|
|
unsigned material_index = 0; // &m.iqm->meshes[i].material; // aiGetMeshMaterialIndex(scn_mesh[i]);
|
|
|
|
bool has_data = verts && faces;
|
|
if( !has_data ) {
|
|
continue;
|
|
}
|
|
|
|
PRINTF("Loading mesh v%d/f%d\n", verts, faces);
|
|
|
|
Mesh mesh = { 0 };
|
|
|
|
mesh.vao = m.vao;
|
|
mesh.vbo = m.vbo;
|
|
mesh.ibo = m.ibo;
|
|
|
|
mat44 id; id44(id);
|
|
mesh.aabb_min = model_aabb(m, id).min;
|
|
mesh.aabb_max = model_aabb(m, id).max;
|
|
|
|
// p3 n3 t3 b3 u2
|
|
|
|
mesh.vert_stride = m.stride;
|
|
mesh.vert_stream = m.verts;
|
|
|
|
mesh.num_verts = verts;
|
|
mesh.num_tris = faces;
|
|
|
|
mesh.material_idx = material_index;
|
|
|
|
// By importing materials before meshes we can investigate whether a mesh is transparent and flag it as such.
|
|
const pbr_material_t* mtl = G->materials ? &G->materials[mesh.material_idx] : NULL;
|
|
mesh.transparent = false;
|
|
if( mtl ) {
|
|
mesh.transparent |= mtl->albedo .texture ? mtl->albedo .texture->transparent : mtl->albedo .color.a < 1.0f;
|
|
mesh.transparent |= mtl->diffuse.texture ? mtl->diffuse.texture->transparent : mtl->diffuse.color.a < 1.0f;
|
|
}
|
|
|
|
array_push(G->meshes, mesh);
|
|
}
|
|
|
|
#if 0
|
|
G->mGlobalAmbient = vec4( 0.3,0.3,0.3,0.3 );
|
|
int scn_num_lights = 0;
|
|
for( int i = 0; i < scn_num_lights; i++ ) {
|
|
PRINTF("Loading light %d/%d\n", i + 1, scn_num_lights);
|
|
|
|
vec4 *color = aiGetLightColor(scn_light[i]);
|
|
char *type = aiGetLightType(scn_light[i]);
|
|
if( 0 == strcmp(type, "AMBIENT") ) {
|
|
memcpy( &G->mGlobalAmbient, &color->r, sizeof( float ) * 4 );
|
|
} else {
|
|
// @todo
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
void ModelRender( Model *G, const mat44 _worldRootMatrix ) {
|
|
unsigned _shader = G->shader;
|
|
shader_bind( _shader );
|
|
|
|
shader_vec4("global_ambient", vec4(1,1,1,1)); // unused
|
|
|
|
// loop thrice: first opaque, then transparent backface, then transparent frontface
|
|
for(int j = 0; j < 3; ++j) {
|
|
bool bTransparentPass = j > 0;
|
|
if(bTransparentPass) {
|
|
glEnable( GL_BLEND );
|
|
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
|
|
glCullFace( j == 1 ? GL_FRONT : GL_BACK ); // glDepthMask( GL_FALSE);
|
|
}
|
|
|
|
mat44 mat_world; copy44(mat_world, _worldRootMatrix); // @fixme mMatrices[ node.mID ] * _worldRootMatrix
|
|
shader_mat44( "mat_world", mat_world );
|
|
|
|
for( int i = 0, end = array_count(G->meshes); i < end; i++ ) {
|
|
const Mesh *mesh = &G->meshes[ i ];
|
|
// Postpone rendering transparent meshes
|
|
if(mesh->transparent != bTransparentPass)
|
|
continue;
|
|
|
|
const pbr_material_t *material = &G->materials[ mesh->material_idx ];
|
|
shader_colormap( "map_diffuse", material->diffuse );
|
|
shader_colormap( "map_normals", material->normals );
|
|
shader_colormap( "map_specular", material->specular );
|
|
shader_colormap( "map_albedo", material->albedo );
|
|
shader_colormap( "map_roughness", material->roughness );
|
|
shader_colormap( "map_metallic", material->metallic );
|
|
shader_colormap( "map_ao", material->ao );
|
|
shader_colormap( "map_ambient", material->ambient );
|
|
shader_colormap( "map_emissive", material->emissive );
|
|
shader_float( "specular_shininess", material->specular_shininess ); // unused, basic_specgloss.fs only
|
|
|
|
shader_vec2( "resolution", vec2(window_width(),window_height()));
|
|
|
|
glActiveTexture(GL_TEXTURE0); // be nice to Mesa before rendering
|
|
glBindVertexArray( mesh->vao );
|
|
glDrawElements( GL_TRIANGLES, mesh->num_tris * 3, GL_UNSIGNED_INT, NULL );
|
|
}
|
|
|
|
if(bTransparentPass) {
|
|
glDisable( GL_BLEND );
|
|
// glDepthMask( GL_TRUE );
|
|
}
|
|
}
|
|
|
|
//glBindVertexArray( 0 );
|
|
//glUseProgram( 0 );
|
|
}
|
|
|
|
static
|
|
void G_SetupVertexArray( unsigned _shader, const char *name, int stride, int num_floats, int *offset, int opt_location ) {
|
|
int location = opt_location >= 0 ? opt_location : glGetAttribLocation( _shader, name );
|
|
if( location >= 0 ) {
|
|
glVertexAttribPointer( location, num_floats, GL_FLOAT, GL_FALSE, stride, (GLvoid *)(uintptr_t)(*offset) );
|
|
glEnableVertexAttribArray( location );
|
|
}
|
|
*offset += num_floats * sizeof( GLfloat );
|
|
}
|
|
|
|
void ModelRebind( Model *G, unsigned _shader ) {
|
|
shader_bind(_shader);
|
|
if(_shader == G->shader) return;
|
|
G->shader = _shader;
|
|
|
|
for( int i = 0, end = array_count(G->meshes); i < end; i++ ) {
|
|
const Mesh *mesh = &G->meshes[ i ];
|
|
|
|
glBindVertexArray( mesh->vao );
|
|
glBindBuffer( GL_ARRAY_BUFFER, mesh->vbo );
|
|
glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, mesh->ibo );
|
|
|
|
glDisableVertexAttribArray( 0 );
|
|
glDisableVertexAttribArray( 1 );
|
|
glDisableVertexAttribArray( 2 );
|
|
glDisableVertexAttribArray( 3 );
|
|
glDisableVertexAttribArray( 4 );
|
|
glDisableVertexAttribArray( 5 );
|
|
glDisableVertexAttribArray( 6 );
|
|
glDisableVertexAttribArray( 7 );
|
|
|
|
int offset = 0, stride = mesh->vert_stride;
|
|
G_SetupVertexArray( _shader, "in_pos", stride, 3, &offset, -1/*0*/ );
|
|
G_SetupVertexArray( _shader, "in_texcoord", stride, 2, &offset, -1/*1*/ );
|
|
G_SetupVertexArray( _shader, "in_normal", stride, 3, &offset, -1/*2*/ );
|
|
G_SetupVertexArray( _shader, "in_tangent", stride, 4, &offset, -1/*3*/ );
|
|
|
|
//glBindVertexArray( 0 );
|
|
}
|
|
}
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// skyboxes
|
|
|
|
// Extracts single key value from an HDRLabs IBL file. Returns an empty string on error.
|
|
static const char *ibl_readkey( const char* pathfile, const char* key ) {
|
|
char *data = vfs_read(pathfile);
|
|
if( data ) {
|
|
const char *found = strstr(data, va("%s=", key));
|
|
if( found ) return found + strlen(key) + 1;
|
|
found = strstr(data, va("%s =", key));
|
|
if( found ) return found + strlen(key) + 2;
|
|
}
|
|
return "";
|
|
}
|
|
|
|
typedef struct Skybox {
|
|
vec3 sunColor; float sunYaw, sunPitch; // ibl settings
|
|
texture_t *reflection; // reflection map (hdr)
|
|
texture_t *env; // irradiance map (env)
|
|
} Skybox;
|
|
|
|
Skybox g_skybox = { {1,1,1} };
|
|
|
|
void SkyboxDestroy( Skybox *s ) {
|
|
if( s->reflection ) texture_destroy( s->reflection );
|
|
if( s->env ) texture_destroy( s->env );
|
|
*s = (Skybox){0};
|
|
}
|
|
|
|
bool SkyboxLoad( Skybox *s, const char **slots ) { // hdr,env,ibl
|
|
SkyboxDestroy( s );
|
|
|
|
const char* reflectionPath = slots[0];
|
|
const char* envPath = slots[1];
|
|
const char* iblPath = slots[2];
|
|
|
|
// unsigned invalid = texture_checker().id;
|
|
|
|
// Reflection map
|
|
if( reflectionPath ) {
|
|
if( (s->reflection = LoadTextureRGBA8( reflectionPath, TEXTURE_SRGB )) != NULL ) {
|
|
glBindTexture( GL_TEXTURE_2D, s->reflection->id );
|
|
|
|
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT );
|
|
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
}
|
|
}
|
|
|
|
// Irradiance map
|
|
if( envPath ) {
|
|
if( (s->env = LoadTextureRGBA8( envPath, TEXTURE_SRGB )) != NULL ) {
|
|
glBindTexture( GL_TEXTURE_2D, s->env->id );
|
|
|
|
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT );
|
|
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
}
|
|
}
|
|
|
|
// Sun color & direction from .ibl file
|
|
s->sunColor = vec3(1,1,1);
|
|
s->sunYaw = 0, s->sunPitch = 0;
|
|
if( iblPath ) {
|
|
vec3 sc; if( 3 == sscanf(ibl_readkey(iblPath, "SUNcolor"), "%f,%f,%f", &sc.x, &sc.y, &sc.z) ) {
|
|
s->sunColor = scale3(sc, 1/255.f);
|
|
}
|
|
vec2 uv = vec2(atof(ibl_readkey(iblPath, "SUNu")), atof(ibl_readkey(iblPath, "SUNv")));
|
|
if( len2(uv) > 0 ) {
|
|
s->sunYaw = C_PI * (-2. * uv.x + 0.5f);
|
|
s->sunPitch = (0.5f - uv.y) * C_PI;
|
|
}
|
|
}
|
|
|
|
return s->reflection && s->env;
|
|
}
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// main
|
|
|
|
const char *shader_names[] = {"Physically Based", "Basic SpecGloss" };
|
|
const char *shaders[][2] = { // name, vs, fs
|
|
{ "Shaders/pbr.vs", "Shaders/pbr.fs" },
|
|
{ "Shaders/basic_specgloss.vs", "Shaders/basic_specgloss.fs" }
|
|
};
|
|
|
|
const char *skyboxes[][3] = { // reflection, env, metadata
|
|
{"hdr/Tokyo_BigSight_1k.hdr","hdr/Tokyo_BigSight_Env.hdr","hdr/Tokyo_BigSight.ibl"},
|
|
{"hdr/GCanyon_C_YumaPoint_1k.hdr","hdr/GCanyon_C_YumaPoint_Env.hdr","hdr/GCanyon_C_YumaPoint.ibl"},
|
|
{"hdr/Factory_Catwalk_1k.hdr","hdr/Factory_Catwalk_Env.hdr","hdr/Factory_Catwalk.ibl"},
|
|
{"hdr/MonValley_G_DirtRoad_1k.hdr","hdr/MonValley_G_DirtRoad_Env.hdr","hdr/MonValley_G_DirtRoad.ibl"},
|
|
{"hdr/Shiodome_Stairs_1k.hdr","hdr/Shiodome_Stairs_Env.hdr","hdr/Shiodome_Stairs.ibl"},
|
|
};
|
|
|
|
Model gModel;
|
|
unsigned gShader = ~0u;
|
|
unsigned gShaderConfig = ~0u;
|
|
|
|
bool LoadShaderConfig( int slot ) { // name,vs,fs
|
|
unsigned newShader = shader( vfs_read(shaders[slot][0]), vfs_read(shaders[slot][1]), NULL, NULL, NULL );
|
|
if( newShader == ~0u ) return false;
|
|
|
|
shader_destroy( gShader );
|
|
gShaderConfig = slot;
|
|
gShader = newShader;
|
|
|
|
return true;
|
|
}
|
|
|
|
void camera_fit(camera_t *cam) {
|
|
vec3 target = scale3( add3( gModel.meshes[0].aabb_min, gModel.meshes[0].aabb_max ), 0.5f);
|
|
float distance = len3( sub3( gModel.meshes[0].aabb_max, gModel.meshes[0].aabb_min ) ) * 0.85f;
|
|
cam->position = add3(target, scale3(norm3(sub3(cam->position,target)), distance));
|
|
camera_lookat(cam, vec3(0,0,0));
|
|
}
|
|
|
|
int main() {
|
|
window_create( 75, WINDOW_MSAA2 );
|
|
window_title(__FILE__);
|
|
|
|
// load all fx files in all subdirs
|
|
fx_load("fx**.fs");
|
|
|
|
LoadShaderConfig( 0 );
|
|
|
|
brdf_lut();
|
|
|
|
// -------------------------------------------------------------------------
|
|
// Mainloop
|
|
float model_yaw = 0, model_pitch = 0;
|
|
float lightYaw = 0.0f;
|
|
float lightPitch = 0.0f;
|
|
vec4 skyBackgroundColor = vec4(0.01,0.01,0.02,1); // vec4(1,0,0,1);
|
|
float skyExposure = 1.0; // plain 'exposure' instead? this is camera related
|
|
float skyBlur = 0.00; // 0.00
|
|
float skyOpacity = 0.99; // 0.99
|
|
bool do_wireframe = false;
|
|
bool do_xzySpace = true; // xzySpace or xyzSpace
|
|
bool do_flipY = false;
|
|
const mat44 xzyMatrix = {
|
|
1, 0, 0, 0,
|
|
0, 0, 1, 0,
|
|
0,+1, 0, 0,
|
|
0, 0, 0, 1 };
|
|
|
|
camera_t cam = camera(); cam.speed = 0.1;
|
|
|
|
int firstskyboxes = 0; // 0: tokyo_bigsight
|
|
SkyboxLoad( &g_skybox, &skyboxes[firstskyboxes][0] );
|
|
lightYaw = g_skybox.sunYaw;
|
|
lightPitch = g_skybox.sunPitch;
|
|
|
|
unsigned skysphereShader = shader( vfs_read("Skyboxes/skysphere.vs"), vfs_read("Skyboxes/skysphere.fs"), NULL, NULL, NULL );
|
|
Model skysphere = { 0 }; ModelLoad(&skysphere, "Skyboxes/skysphere.fbx"); ModelRebind(&skysphere, skysphereShader);
|
|
|
|
if( ModelLoad( &gModel, option("--model", "damagedhelmet.gltf") ) ) {
|
|
ModelRebind( &gModel, gShader );
|
|
}
|
|
|
|
cam.position = vec3(+1,0,+1);
|
|
camera_fit(&cam);
|
|
|
|
static mat44 worldRootXYZ; do_once id44(worldRootXYZ); // mat44( 1.0f );
|
|
|
|
while( window_swap() && !input(KEY_ESC) ) {
|
|
|
|
if( input(KEY_F5) ) window_reload();
|
|
if( input_down( KEY_F ) ) camera_fit(&cam);
|
|
|
|
// ---------------------------------------------------------------------
|
|
|
|
static int fps_mode;
|
|
if(input_down(KEY_TAB)) { fps_mode ^= 1; camera_fit(&cam); }
|
|
if(fps_mode) {
|
|
// fps camera
|
|
bool active = ui_active() || ui_hover() || gizmo_active() ? false : input(MOUSE_L) || input(MOUSE_M) || input(MOUSE_R);
|
|
window_cursor( !active );
|
|
if( active ) cam.speed = clampf(cam.speed + input_diff(MOUSE_W) / 10, 0.05f, 5.0f);
|
|
vec2 mouse = scale2(vec2(input_diff(MOUSE_X), -input_diff(MOUSE_Y)), 0.2f * active);
|
|
vec3 wasdecq = scale3(vec3(input(KEY_D)-input(KEY_A),input(KEY_E)-(input(KEY_C)||input(KEY_Q)),input(KEY_W)-input(KEY_S)), cam.speed);
|
|
camera_moveby(&cam, wasdecq);
|
|
camera_fps(&cam, mouse.x,mouse.y);
|
|
} else {
|
|
// orbit camera
|
|
window_cursor( true );
|
|
bool active = !ui_active() && !ui_hover() && !gizmo_active();
|
|
vec2 inc_mouse = scale2(vec2(input_diff(MOUSE_X), -input_diff(MOUSE_Y)), 0.2f * active * input(MOUSE_L));
|
|
float inc_distance = -0.2f * active * input_diff(MOUSE_W);
|
|
camera_orbit(&cam, inc_mouse.x, inc_mouse.y, inc_distance);
|
|
// rotate model
|
|
model_yaw -= input_diff(MOUSE_X) * 0.2f * active * input(MOUSE_R);
|
|
model_pitch += input_diff(MOUSE_Y) * 0.2f * active * input(MOUSE_R);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------
|
|
|
|
glClearColor( skyBackgroundColor.r, skyBackgroundColor.g, skyBackgroundColor.b, skyBackgroundColor.a );
|
|
glEnable(GL_CULL_FACE);
|
|
glFrontFace(GL_CCW);
|
|
|
|
// ---------------------------------------------------------------------
|
|
// Mesh state
|
|
|
|
fx_begin();
|
|
|
|
profile("PBR Model (bindings)") {
|
|
ModelRebind( &gModel, gShader );
|
|
|
|
shader_mat44( "mat_projection", cam.proj );
|
|
|
|
//cameraPosition = scale3(cameraPosition, gCameraDistance);
|
|
shader_vec3( "camera_position", cam.position );
|
|
|
|
vec3 lightDirection = vec3( 0, 0, 1 );
|
|
lightDirection = rotatex3( lightDirection, deg(lightPitch) );
|
|
lightDirection = rotatey3( lightDirection, deg(lightYaw) );
|
|
|
|
vec3 fillLightDirection = vec3( 0, 0, 1 );
|
|
fillLightDirection = rotatex3( fillLightDirection, deg(lightPitch - 0.4f) );
|
|
fillLightDirection = rotatey3( fillLightDirection, deg(lightYaw + 0.8f) );
|
|
|
|
shader_vec3( "lights[0].direction", lightDirection );
|
|
shader_vec3( "lights[0].color", g_skybox.sunColor );
|
|
shader_vec3( "lights[1].direction", fillLightDirection );
|
|
shader_vec3( "lights[1].color", vec3( 0.5f, 0.5f, 0.5f ) );
|
|
shader_vec3( "lights[2].direction", neg3(fillLightDirection) );
|
|
shader_vec3( "lights[2].color", vec3( 0.25f, 0.25f, 0.25f ) );
|
|
|
|
shader_float( "skysphere_rotation", lightYaw - g_skybox.sunYaw );
|
|
|
|
mat44 viewMatrix, inv_viewMatrix;
|
|
copy44(viewMatrix, cam.view);
|
|
invert44( inv_viewMatrix, viewMatrix);
|
|
shader_mat44( "mat_view", viewMatrix );
|
|
shader_mat44( "mat_view_inverse", inv_viewMatrix );
|
|
|
|
shader_bool( "has_tex_skysphere", g_skybox.reflection != NULL );
|
|
shader_bool( "has_tex_skyenv", g_skybox.env != NULL );
|
|
if( g_skybox.reflection ) {
|
|
float mipCount = floor( log2( g_skybox.reflection->h ) );
|
|
shader_texture( "tex_skysphere", *g_skybox.reflection );
|
|
shader_float( "skysphere_mip_count", mipCount );
|
|
}
|
|
if( g_skybox.env ) {
|
|
shader_texture( "tex_skyenv", *g_skybox.env );
|
|
}
|
|
shader_texture( "tex_brdf_lut", brdf_lut() );
|
|
shader_float( "exposure", skyExposure );
|
|
shader_uint( "frame_count", (unsigned)window_frame() );
|
|
}
|
|
|
|
// ---------------------------------------------------------------------
|
|
// Mesh render
|
|
|
|
mat44 M;
|
|
copy44( M, do_xzySpace ? xzyMatrix : worldRootXYZ );
|
|
if( do_flipY ) scale44( M, 1,-1,1 );
|
|
rotate44( M, model_yaw, 0,0,1 );
|
|
rotate44( M, model_pitch, 1,0,0 );
|
|
|
|
profile("PBR Model (render)") {
|
|
ModelRender( &gModel, M );
|
|
}
|
|
|
|
profile("PBR Model (wireframe)") {
|
|
if( do_wireframe ) {
|
|
glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
|
|
glDepthFunc( GL_LEQUAL );
|
|
|
|
shader_float("exposure", 100.0f );
|
|
ModelRender( &gModel, M );
|
|
|
|
glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
|
|
glDepthFunc( GL_LESS );
|
|
}
|
|
}
|
|
|
|
// ---------------------------------------------------------------------
|
|
// Skysphere render
|
|
|
|
profile("PBR Skybox") {
|
|
ModelRebind(&skysphere, skysphereShader );
|
|
|
|
mat44 projview; multiply44x2(projview, cam.proj, cam.view);
|
|
shader_mat44( "mat_mvp", projview );
|
|
|
|
shader_bool( "has_tex_skysphere", g_skybox.reflection != NULL );
|
|
shader_bool( "has_tex_skyenv", g_skybox.env != NULL );
|
|
|
|
if( g_skybox.reflection ) {
|
|
const float mipCount = floor( log2( g_skybox.reflection->h ) );
|
|
shader_texture( "tex_skysphere", *g_skybox.reflection );
|
|
shader_float( "skysphere_mip_count", mipCount );
|
|
}
|
|
|
|
if( g_skybox.env ) {
|
|
shader_texture( "tex_skyenv", *g_skybox.env );
|
|
}
|
|
|
|
shader_vec4( "background_color", skyBackgroundColor );
|
|
shader_float( "skysphere_blur", skyBlur );
|
|
shader_float( "skysphere_opacity", skyOpacity );
|
|
shader_float( "skysphere_rotation", lightYaw - g_skybox.sunYaw );
|
|
shader_float( "exposure", skyExposure );
|
|
shader_uint( "frame_count", (unsigned)window_frame() );
|
|
|
|
glDepthFunc( GL_LEQUAL );
|
|
ModelRender(&skysphere, worldRootXYZ );
|
|
glDepthFunc( GL_LESS );
|
|
}
|
|
|
|
fx_end();
|
|
|
|
// ---------------------------------------------------------------------
|
|
// UI
|
|
|
|
if( ui_panel( "Viewer", 0 ) ) {
|
|
ui_bool( "Wireframe", &do_wireframe );
|
|
ui_separator();
|
|
|
|
if( ui_radio("Shader config:", shader_names, countof(shader_names), &gShaderConfig) ) {
|
|
LoadShaderConfig( gShaderConfig );
|
|
ModelRebind(&gModel, gShader );
|
|
}
|
|
|
|
ui_separator();
|
|
for( int i = 0; i < countof(skyboxes); i++ ) {
|
|
const char *filename = skyboxes[i][0];
|
|
bool selected = !strcmp(g_skybox.reflection->filename, file_name(filename));
|
|
if( ui_bool( filename, &selected ) ) {
|
|
SkyboxLoad( &g_skybox, &skyboxes[i][0] );
|
|
lightYaw = g_skybox.sunYaw;
|
|
lightPitch = g_skybox.sunPitch;
|
|
}
|
|
}
|
|
|
|
ui_separator();
|
|
ui_float( "Sky exposure", &skyExposure); skyExposure = clampf(skyExposure, 0.1f, 4.0f );
|
|
ui_float( "Sky blur", &skyBlur); skyBlur = clampf(skyBlur, 0.0f, 1.0f );
|
|
ui_float( "Sky opacity", &skyOpacity); skyOpacity = clampf(skyOpacity, 0.0f, 1.0f );
|
|
ui_color4f( "Sky background", (float *) &skyBackgroundColor.x );
|
|
|
|
ui_separator();
|
|
ui_float( "SunLight Yaw", &lightYaw );
|
|
ui_float( "SunLight Pitch", &lightPitch );
|
|
|
|
ui_panel_end();
|
|
}
|
|
|
|
if( ui_panel( "Model", 0 ) ) {
|
|
ui_label(va("Material count: %d", array_count(gModel.materials)));
|
|
ui_label(va("Mesh count: %d", array_count(gModel.meshes)));
|
|
int triCount = 0; for( int i = 0, end = array_count(gModel.meshes); i < end; ++i ) triCount += gModel.meshes[i].num_tris;
|
|
ui_label(va("Triangle count: %d", triCount));
|
|
ui_separator();
|
|
|
|
bool xyzSpace = !do_xzySpace;
|
|
if( ui_bool( "XYZ space", &xyzSpace ) ) {
|
|
do_xzySpace = !do_xzySpace;
|
|
}
|
|
ui_bool( "XZY space", &do_xzySpace );
|
|
ui_bool( "invert Y", &do_flipY );
|
|
|
|
ui_separator();
|
|
for( int i = 0, end = array_count(gModel.materials); i < end; ++i ) {
|
|
pbr_material_t *it = &gModel.materials[i];
|
|
ui_label(va("Name: %s", it->name));
|
|
ui_float( "Specular shininess", &it->specular_shininess );
|
|
ui_separator(); if(ui_colormap( "Albedo", &it->albedo )) colormap(&it->albedo , app_loadfile(), 1);
|
|
ui_separator(); if(ui_colormap( "Ambient", &it->ambient )) colormap(&it->ambient , app_loadfile(), 0);
|
|
ui_separator(); if(ui_colormap( "AO", &it->ao )) colormap(&it->ao , app_loadfile(), 0);
|
|
ui_separator(); if(ui_colormap( "Diffuse", &it->diffuse )) colormap(&it->diffuse , app_loadfile(), 1);
|
|
ui_separator(); if(ui_colormap( "Emissive", &it->emissive )) colormap(&it->emissive , app_loadfile(), 1);
|
|
ui_separator(); if(ui_colormap( "Metallic", &it->metallic )) colormap(&it->metallic , app_loadfile(), 0);
|
|
ui_separator(); if(ui_colormap( "Normal", &it->normals )) colormap(&it->normals , app_loadfile(), 0);
|
|
ui_separator(); if(ui_colormap( "Roughness", &it->roughness )) colormap(&it->roughness, app_loadfile(), 0);
|
|
ui_separator(); if(ui_colormap( "Specular", &it->specular )) colormap(&it->specular , app_loadfile(), 0);
|
|
}
|
|
|
|
ui_panel_end();
|
|
}
|
|
|
|
if( ui_panel("Help", 0)) {
|
|
if( fps_mode ) {
|
|
ui_label("TAB: switch to Orbit camera mode");
|
|
ui_label("WASD,QEC: move camera");
|
|
ui_label("Drag + Mouse Button: camera freelook");
|
|
} else {
|
|
ui_label("TAB: switch to FPS camera mode");
|
|
ui_label("Drag + Left Mouse Button: orbit camera");
|
|
ui_label("Drag + Right Mouse Button: rotate model");
|
|
ui_label("Mouse wheel: camera distance");
|
|
}
|
|
ui_label("F: center view");
|
|
ui_panel_end();
|
|
}
|
|
}
|
|
}
|