ProgramObject ProgramObject::load(GraphicContext &gc, const std::string &vertex_fullname, const std::string &geometry_fullname, const std::string &fragment_fullname)
{
std::string path_vertex = PathHelp::get_fullpath(vertex_fullname, PathHelp::path_type_file);
std::string filename_vertex = PathHelp::get_filename(vertex_fullname, PathHelp::path_type_file);
FileSystem vfs_vertex(path_vertex);
std::string path_geometry = PathHelp::get_fullpath(geometry_fullname, PathHelp::path_type_file);
std::string filename_geometry = PathHelp::get_filename(geometry_fullname, PathHelp::path_type_file);
FileSystem vfs_geometry(path_geometry);
std::string path_fragment = PathHelp::get_fullpath(fragment_fullname, PathHelp::path_type_file);
std::string filename_fragment = PathHelp::get_filename(fragment_fullname, PathHelp::path_type_file);
FileSystem vfs_fragment(path_fragment);
ProgramObject program_object(gc);
ShaderObject vertex_shader = ShaderObject::load_and_compile(gc, shadertype_vertex, filename_vertex, vfs_vertex);
program_object.attach(vertex_shader);
ShaderObject geometry_shader = ShaderObject::load_and_compile(gc, shadertype_geometry, filename_geometry, vfs_geometry);
program_object.attach(geometry_shader);
ShaderObject fragment_shader = ShaderObject::load_and_compile(gc, shadertype_fragment, filename_fragment, vfs_fragment);
program_object.attach(fragment_shader);
return program_object;
}
ProgramObject ProgramObject::load(GraphicContext &gc, IODevice &vertex_file, IODevice &fragment_file)
{
ProgramObject program_object(gc);
ShaderObject vertex_shader = ShaderObject::load_and_compile(gc, shadertype_vertex, vertex_file);
program_object.attach(vertex_shader);
ShaderObject fragment_shader = ShaderObject::load_and_compile(gc, shadertype_fragment, fragment_file);
program_object.attach(fragment_shader);
return program_object;
}
ProgramObject ProgramObject::load(GraphicContext &gc, const std::string &vertex_filename, const std::string &fragment_filename, const FileSystem &fs)
{
ProgramObject program_object(gc);
ShaderObject vertex_shader = ShaderObject::load_and_compile(gc, shadertype_vertex, vertex_filename, fs);
program_object.attach(vertex_shader);
ShaderObject fragment_shader = ShaderObject::load_and_compile(gc, shadertype_fragment, fragment_filename, fs);
program_object.attach(fragment_shader);
return program_object;
}
ProgramObject ProgramObject::load(
GraphicContext &gc,
const std::string &resource_id,
const XMLResourceDocument &resources)
{
ProgramObject program_object(gc);
XMLResourceNode resource = resources.get_resource(resource_id);
DomNode node = resource.get_element().get_first_child();
while (!node.is_null())
{
if (node.is_element())
{
DomElement element = node.to_element();
if (element.get_tag_name() == "shader")
{
ShaderObject shader = ShaderObject::load(gc, element.get_attribute("name"), resources);
program_object.attach(shader);
}
else if (element.get_tag_name() == "bind-attribute")
{
program_object.bind_attribute_location(
StringHelp::text_to_int(element.get_attribute("index")),
element.get_attribute("name"));
}
}
node = node.get_next_sibling();
}
if (!resource.get_element().get_attribute("shader").empty())
{
ShaderObject shader = ShaderObject::load(gc, resource.get_element().get_attribute("shader"), resources);
program_object.attach(shader);
}
if (resource.get_element().get_attribute("link", "true") == "true")
if(!program_object.link())
throw Exception(string_format("Unable to link program object: %1", program_object.get_info_log()));
return program_object;
}
// The start of the Application
int App::start(const std::vector<std::string> &args)
{
clan::DisplayWindowDescription win_desc;
//win_desc.set_version(3, 2, false);
win_desc.set_allow_resize(true);
win_desc.set_title("Point Sprite Example");
win_desc.set_size(clan::Size( 800, 480 ), false);
clan::DisplayWindow window(win_desc);
clan::SlotContainer cc;
cc.connect(window.sig_window_close(), clan::bind_member(this, &App::on_window_close));
cc.connect(window.get_ic().get_keyboard().sig_key_up(), clan::bind_member(this, &App::on_input_up));
std::string theme;
if (clan::FileHelp::file_exists("../../../Resources/GUIThemeAero/theme.css"))
theme = "../../../Resources/GUIThemeAero";
else if (clan::FileHelp::file_exists("../../../Resources/GUIThemeBasic/theme.css"))
theme = "../../../Resources/GUIThemeBasic";
else
throw clan::Exception("No themes found");
clan::GUIWindowManagerTexture wm(window);
clan::GUIManager gui(wm, theme);
clan::Canvas canvas(window);
// Deleted automatically by the GUI
Options *options = new Options(gui, clan::Rect(0, 0, canvas.get_size()));
clan::Image image_grid(canvas, "../Blend/Resources/grid.png");
clan::Texture2D texture_particle(canvas, "Resources/particle.png");
float grid_width = (float) image_grid.get_width();
float grid_height = (float) image_grid.get_height();
grid_space = (float) (image_grid.get_width());
setup_particles();
clan::ShaderObject vertex_shader(canvas, clan::shadertype_vertex, text_shader_vertex);
if(!vertex_shader.compile())
{
throw clan::Exception(clan::string_format("Unable to compile vertex shader object: %1", vertex_shader.get_info_log()));
}
clan::ShaderObject fragment_shader(canvas, clan::shadertype_fragment, text_shader_fragment);
if(!fragment_shader.compile())
{
throw clan::Exception(clan::string_format("Unable to compile fragment shader object: %1", fragment_shader.get_info_log()));
}
clan::ProgramObject program_object(canvas);
program_object.attach(vertex_shader);
program_object.attach(fragment_shader);
program_object.bind_attribute_location(0, "InPosition");
program_object.bind_attribute_location(1, "InColor");
if (!program_object.link())
{
throw clan::Exception(clan::string_format("Unable to link program object: %1", program_object.get_info_log()));
}
program_object.set_uniform1i("Texture0", 0);
options->request_repaint();
clan::BlendStateDescription blend_state_desc;
blend_state_desc.enable_blending(true);
blend_state_desc.set_blend_function(clan::blend_src_alpha, clan::blend_one, clan::blend_src_alpha, clan::blend_one);
clan::BlendState blend_state(canvas, blend_state_desc);
clan::GameTime game_time;
while (!quit)
{
game_time.update();
wm.process();
wm.draw_windows(canvas);
int num_particles = options->num_particles;
if (num_particles > max_particles)
num_particles = max_particles;
move_particles(game_time.get_time_elapsed(), num_particles);
const float grid_xpos = 10.0f;
const float grid_ypos = 10.0f;
// Draw the grid
image_grid.draw(canvas, grid_xpos, grid_ypos);
if (num_particles > 0)
{
std::vector<clan::Vec2f> positions;
std::vector<clan::Colorf> colors;
positions.resize(num_particles);
colors.resize(num_particles);
for (int cnt=0; cnt<num_particles; cnt++)
{
positions[cnt] = clan::Vec2f(grid_xpos + particles[cnt].xpos, grid_ypos + particles[cnt].ypos);
switch (cnt % 3)
{
case 0:
colors[cnt] = clan::Colorf(1.0f, 0.0f, 0.0f, 1.0f);
break;
case 1:
colors[cnt] = clan::Colorf(0.0f, 1.0f, 0.0f, 1.0f);
break;
case 2:
colors[cnt] = clan::Colorf(0.0f, 0.0f, 1.0f, 1.0f);
break;
}
};
canvas.flush();
clan::GraphicContext gc = canvas.get_gc();
canvas.set_blend_state(blend_state);
clan::RasterizerStateDescription raster_state_desc;
raster_state_desc.set_point_size(options->point_size);
raster_state_desc.set_point_sprite_origin(clan::origin_upper_left);
clan::RasterizerState raster_state(canvas, raster_state_desc);
canvas.set_rasterizer_state(raster_state);
clan::PrimitivesArray primarray(gc);
clan::VertexArrayVector<clan::Vec2f> gpu_positions = clan::VertexArrayVector<clan::Vec2f>(gc, &positions[0], positions.size());
clan::VertexArrayVector<clan::Colorf> gpu_colors = clan::VertexArrayVector<clan::Colorf>(gc, &colors[0], colors.size());
primarray.set_attributes(0, gpu_positions);
primarray.set_attributes(1, gpu_colors);
ProgramUniforms buffer;
buffer.cl_ModelViewProjectionMatrix = canvas.get_projection() * canvas.get_modelview();
clan::UniformVector<ProgramUniforms> uniform_vector(gc, &buffer, 1);
gc.set_uniform_buffer(0, uniform_vector);
gc.set_texture(0, texture_particle);
gc.set_program_object(program_object);
gc.draw_primitives(clan::type_points, num_particles, primarray);
gc.reset_program_object();
gc.reset_texture(0);
gc.reset_blend_state();
gc.reset_rasterizer_state();
}
window.flip(1);
clan::KeepAlive::process();
}
return 0;
}
// The start of the Application
int App::start(const std::vector<CL_String> &args)
{
CL_OpenGLWindowDescription win_desc;
//win_desc.set_version(3, 2, false);
win_desc.set_allow_resize(true);
win_desc.set_title("Point Sprite Example");
win_desc.set_size(CL_Size( 800, 480 ), false);
CL_DisplayWindow window(win_desc);
CL_Slot slot_quit = window.sig_window_close().connect(this, &App::on_window_close);
CL_Slot slot_input_up = (window.get_ic().get_keyboard()).sig_key_up().connect(this, &App::on_input_up);
CL_String theme;
if (CL_FileHelp::file_exists("../../../Resources/GUIThemeAero/theme.css"))
theme = "../../../Resources/GUIThemeAero";
else if (CL_FileHelp::file_exists("../../../Resources/GUIThemeBasic/theme.css"))
theme = "../../../Resources/GUIThemeBasic";
else
throw CL_Exception("No themes found");
CL_GUIWindowManagerTexture wm(window);
CL_GUIManager gui(wm, theme);
CL_GraphicContext gc = window.get_gc();
// Deleted automatically by the GUI
Options *options = new Options(gui, CL_Rect(0, 0, gc.get_size()));
CL_Image image_grid(gc, "../Blend/Resources/grid.png");
CL_Texture texture_particle(gc, "Resources/particle.png");
float grid_width = (float) image_grid.get_width();
float grid_height = (float) image_grid.get_height();
grid_space = (float) (image_grid.get_width());
setup_particles();
CL_ShaderObject vertex_shader(gc, cl_shadertype_vertex, text_shader_vertex);
if(!vertex_shader.compile())
{
throw CL_Exception(cl_format("Unable to compile vertex shader object: %1", vertex_shader.get_info_log()));
}
CL_ShaderObject fragment_shader(gc, cl_shadertype_fragment, text_shader_fragment);
if(!fragment_shader.compile())
{
throw CL_Exception(cl_format("Unable to compile fragment shader object: %1", fragment_shader.get_info_log()));
}
CL_ProgramObject program_object(gc);
program_object.attach(vertex_shader);
program_object.attach(fragment_shader);
program_object.bind_attribute_location(0, "InPosition");
program_object.bind_attribute_location(1, "InColor");
if (!program_object.link())
{
throw CL_Exception(cl_format("Unable to link program object: %1", program_object.get_info_log()));
}
options->request_repaint();
unsigned int time_last = CL_System::get_time();
while (!quit)
{
unsigned int time_now = CL_System::get_time();
float time_diff = (float) (time_now - time_last);
time_last = time_now;
wm.process();
wm.draw_windows(gc);
int num_particles = options->num_particles;
if (num_particles > max_particles)
num_particles = max_particles;
move_particles(time_diff, num_particles);
const float grid_xpos = 10.0f;
const float grid_ypos = 10.0f;
// Draw the grid
image_grid.draw(gc, grid_xpos, grid_ypos);
if (num_particles > 0)
{
std::vector<CL_Vec2f> positions;
std::vector<CL_Vec4f> colors;
positions.resize(num_particles);
colors.resize(num_particles);
for (int cnt=0; cnt<num_particles; cnt++)
{
positions[cnt] = CL_Vec2f(grid_xpos + particles[cnt].xpos, grid_ypos + particles[cnt].ypos);
switch (cnt % 3)
{
case 0:
colors[cnt] = CL_Vec4f(1.0f, 0.0f, 0.0f, 1.0f);
break;
case 1:
colors[cnt] = CL_Vec4f(0.0f, 1.0f, 0.0f, 1.0f);
break;
case 2:
colors[cnt] = CL_Vec4f(0.0f, 0.0f, 1.0f, 1.0f);
break;
}
};
CL_BlendMode blend;
blend.enable_blending(true);
blend.set_blend_function(cl_blend_src_alpha, cl_blend_one, cl_blend_src_alpha, cl_blend_one);
gc.set_blend_mode(blend);
CL_Pen pen;
pen.enable_point_sprite(true);
pen.set_point_size(options->point_size);
pen.set_point_sprite_origin(cl_point_sprite_origin_upper_left);
gc.set_pen(pen);
program_object.set_uniform1i("Texture0", 0);
gc.set_texture(0, texture_particle);
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, &positions[0]);
prim_array.set_attributes(1, &colors[0]);
gc.set_program_object(program_object);
gc.draw_primitives(cl_points, num_particles, prim_array);
gc.reset_program_object();
gc.reset_texture(0);
gc.reset_blend_mode();
gc.reset_pen();
}
window.flip(1);
CL_KeepAlive::process();
}
return 0;
}
