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#include <gfx/util/skyquad.h>
#include <gfx/core.h>
#include <gfx/gfx.h>
#include <gfx/scene/light.h>
#include <gfx/scene/material.h>
#include <gfx/scene/mesh.h>
#include <gfx/scene/node.h>
#include <gfx/scene/object.h>
#include <gfx/scene/scene.h>
#include <gfx/util/geometry.h>
#include <gfx/util/shader.h>
#include <math/vec4.h>
#include <assert.h>
SceneObject* gfx_make_skyquad(GfxCore* gfxcore, const Texture* texture) {
assert(gfxcore);
assert(texture);
ShaderProgram* shader = 0;
Geometry* geometry = 0;
Material* material = 0;
Mesh* mesh = 0;
SceneObject* object = 0;
shader = gfx_make_skyquad_shader(gfxcore);
if (!shader) {
goto cleanup;
}
geometry = gfx_make_quad_11(gfxcore);
if (!geometry) {
goto cleanup;
}
MaterialDesc material_desc = (MaterialDesc){0};
material_desc.uniforms[0] = (ShaderUniform){
.type = UniformTexture,
.value.texture = texture,
.name = sstring_make("Skyquad")};
material_desc.num_uniforms = 1;
material = gfx_make_material(&material_desc);
if (!material) {
goto cleanup;
}
MeshDesc mesh_desc = (MeshDesc){0};
mesh_desc.geometry = geometry;
mesh_desc.material = material;
mesh_desc.shader = shader;
mesh = gfx_make_mesh(&mesh_desc);
if (!mesh) {
goto cleanup;
}
object = gfx_make_object(&(ObjectDesc){.num_meshes = 1, .meshes = {mesh}});
if (!object) {
goto cleanup;
}
return object;
cleanup:
if (shader) {
gfx_destroy_shader_program(gfxcore, &shader);
}
if (geometry) {
gfx_destroy_geometry(gfxcore, &geometry);
}
if (material) {
gfx_destroy_material(&material);
}
if (mesh) {
gfx_destroy_mesh(&mesh);
}
if (object) {
gfx_destroy_object(&object);
}
return false;
}
/// Create an environment light node.
static SceneNode* make_environment_light(
SceneNode* root, const Texture* environment_map) {
assert(root);
assert(environment_map);
Light* light = 0;
SceneNode* light_node = 0;
light = gfx_make_light(&(LightDesc){
.type = EnvironmentLightType,
.light = {(EnvironmentLightDesc){.environment_map = environment_map}}});
if (!light) {
goto cleanup;
}
light_node = gfx_make_light_node(light);
if (!light_node) {
goto cleanup;
}
gfx_set_node_parent(light_node, root);
return light_node;
cleanup:
if (light) {
gfx_destroy_light(&light);
}
if (light_node) {
gfx_destroy_node(&light_node);
}
return 0;
}
SceneNode* gfx_setup_skyquad(
GfxCore* gfxcore, SceneNode* root, const Texture* environment_map) {
assert(gfxcore);
assert(root);
assert(environment_map);
SceneObject* skyquad_object = 0;
SceneNode* object_node = 0;
SceneNode* light_node = 0;
// Create the skyquad object.
skyquad_object = gfx_make_skyquad(gfxcore, environment_map);
if (!skyquad_object) {
goto cleanup;
}
// Create an object node to render the skyquad in the background.
object_node = gfx_make_object_node(skyquad_object);
if (!object_node) {
goto cleanup;
}
gfx_set_node_parent(object_node, root);
// Create an environment light node under which to root objects affected by
// the skyquad.
light_node = make_environment_light(root, environment_map);
if (!light_node) {
goto cleanup;
}
return light_node;
cleanup:
if (skyquad_object) {
gfx_destroy_object(&skyquad_object);
}
if (object_node) {
gfx_destroy_node(&object_node);
}
if (light_node) {
gfx_destroy_node(&light_node);
}
return 0;
}
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