void CL_RenderBatch3D::flush(CL_GraphicContext &gc)
{
if (position > 0)
{
gc.set_modelview(CL_Mat4f::identity());
gc.set_program_object(cl_program_sprite);
if (use_glyph_program)
{
CL_BlendMode old_blend_mode = gc.get_blend_mode();
CL_BlendMode blend_mode;
blend_mode.set_blend_color(constant_color);
blend_mode.set_blend_function(cl_blend_constant_color, cl_blend_one_minus_src_color, cl_blend_zero, cl_blend_one);
gc.set_blend_mode(blend_mode);
for (int i = 0; i < num_current_textures; i++)
gc.set_texture(i, current_textures[i]);
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, &vertices[0].position, sizeof(SpriteVertex));
prim_array.set_attributes(1, &vertices[0].color, sizeof(SpriteVertex));
prim_array.set_attributes(2, &vertices[0].texcoord, sizeof(SpriteVertex));
prim_array.set_attributes(3, &vertices[0].texindex, sizeof(SpriteVertex));
gc.draw_primitives(cl_triangles, position, prim_array);
for (int i = 0; i < num_current_textures; i++)
gc.reset_texture(i);
gc.set_blend_mode(old_blend_mode);
}
else
{
for (int i = 0; i < num_current_textures; i++)
gc.set_texture(i, current_textures[i]);
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, &vertices[0].position, sizeof(SpriteVertex));
prim_array.set_attributes(1, &vertices[0].color, sizeof(SpriteVertex));
prim_array.set_attributes(2, &vertices[0].texcoord, sizeof(SpriteVertex));
prim_array.set_attributes(3, &vertices[0].texindex, sizeof(SpriteVertex));
gc.draw_primitives(cl_triangles, position, prim_array);
for (int i = 0; i < num_current_textures; i++)
gc.reset_texture(i);
}
gc.reset_program_object();
gc.set_modelview(modelview);
position = 0;
for (int i = 0; i < num_current_textures; i++)
current_textures[i] = CL_Texture();
num_current_textures = 0;
}
}
void Model_Impl::Draw(CL_GraphicContext &gc, GraphicStore *gs, const CL_Mat4f &modelview_matrix)
{
gc.set_modelview(modelview_matrix);
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, vbo_positions, 3, cl_type_float, (void *) 0);
prim_array.set_attributes(1, vbo_normals, 3, cl_type_float, (void *) 0);
if (!vbo_texcoords.is_null())
{
prim_array.set_attributes(2, vbo_texcoords, 2, cl_type_float, (void *) 0);
gc.set_texture(0, gs->texture_underwater);
gc.set_texture(1, gs->texture_background);
gs->shader_texture.SetMaterial(material_shininess, material_emission, material_ambient, material_specular);
gs->shader_texture.Use(gc);
}
else
{
throw CL_Exception("What! no texure coordinates?");
}
gc.draw_primitives(cl_triangles, vbo_size, prim_array);
gc.reset_texture(0);
gc.reset_texture(0);
}
void CL_Draw::gradient_fill(CL_GraphicContext &gc, float x1, float y1, float x2, float y2, const CL_Gradient &gradient)
{
CL_Vec2f positions[6] =
{
CL_Vec2f(x1, y1),
CL_Vec2f(x2, y1),
CL_Vec2f(x1, y2),
CL_Vec2f(x2, y1),
CL_Vec2f(x1, y2),
CL_Vec2f(x2, y2)
};
#define cl_color_to_color4d(c) c.get_red(), c.get_green(), c.get_blue(), c.get_alpha()
CL_Vec4f colors[6] =
{
CL_Vec4f(cl_color_to_color4d(gradient.top_left)),
CL_Vec4f(cl_color_to_color4d(gradient.top_right)),
CL_Vec4f(cl_color_to_color4d(gradient.bottom_left)),
CL_Vec4f(cl_color_to_color4d(gradient.top_right)),
CL_Vec4f(cl_color_to_color4d(gradient.bottom_left)),
CL_Vec4f(cl_color_to_color4d(gradient.bottom_right))
};
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, positions);
prim_array.set_attributes(1, colors);
gc.set_program_object(cl_program_color_only);
gc.draw_primitives(cl_triangles, 6, prim_array);
gc.reset_program_object();
}
void App::draw_texture(CL_GraphicContext &gc, const CL_Rectf &rect, const CL_Colorf &color, const CL_Rectf &texture_unit1_coords)
{
CL_Vec2f positions[6] =
{
CL_Vec2f(rect.left, rect.top),
CL_Vec2f(rect.right, rect.top),
CL_Vec2f(rect.left, rect.bottom),
CL_Vec2f(rect.right, rect.top),
CL_Vec2f(rect.left, rect.bottom),
CL_Vec2f(rect.right, rect.bottom)
};
CL_Vec2f tex1_coords[6] =
{
CL_Vec2f(texture_unit1_coords.left, texture_unit1_coords.top),
CL_Vec2f(texture_unit1_coords.right, texture_unit1_coords.top),
CL_Vec2f(texture_unit1_coords.left, texture_unit1_coords.bottom),
CL_Vec2f(texture_unit1_coords.right, texture_unit1_coords.top),
CL_Vec2f(texture_unit1_coords.left, texture_unit1_coords.bottom),
CL_Vec2f(texture_unit1_coords.right, texture_unit1_coords.bottom)
};
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, positions);
prim_array.set_attribute(1, color);
prim_array.set_attributes(2, tex1_coords);
gc.draw_primitives(cl_triangles, 6, prim_array);
}
void App::render_from_lightsource(CL_GraphicContext &gc, CL_FrameBuffer &framebuffer)
{
CL_PrimitivesArray prim_array(gc);
gc.set_frame_buffer(framebuffer);
gc.set_map_mode(cl_user_projection);
CL_Rect viewport_rect2(0, 0, CL_Size(scene.gs->texture_shadow.get_width(), scene.gs->texture_shadow.get_height()));
gc.set_viewport(viewport_rect2);
CL_Mat4f perp = CL_Mat4f::perspective(67.0f, 1.0f, 0.1f, 1000.0f);
gc.set_projection(scene.gs->light_projection);
CL_BufferControl buffer_control;
buffer_control.set_depth_compare_function(cl_comparefunc_lequal);
buffer_control.enable_depth_write(true);
buffer_control.enable_depth_test(true);
buffer_control.enable_stencil_test(false);
buffer_control.enable_color_write(false);
gc.set_buffer_control(buffer_control);
gc.clear_depth(1.0f);
CL_Mat4f modelview_matrix = scene.gs->light_modelview;
scene.Draw(modelview_matrix, gc, true);
gc.reset_program_object();
gc.set_modelview(CL_Mat4f::identity());
gc.set_map_mode(CL_MapMode(cl_map_2d_upper_left));
gc.reset_frame_buffer();
}
void CL_Draw::point(CL_GraphicContext &gc, float x1, float y1, const CL_Colorf &color)
{
CL_Vec2f positions[1] =
{
CL_Vec2f(x1, y1)
};
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, positions);
prim_array.set_attribute(1, color);
gc.set_program_object(cl_program_color_only);
gc.draw_primitives(cl_points, 1, prim_array);
gc.reset_program_object();
}
void ParticleObject::Draw(GraphicContext &gc, GraphicStore *gs, const Mat4f &modelview_matrix)
{
Mat4f matrix_modelview_projection = gs->camera_projection * modelview_matrix;
PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, object_positions_vbo, 3, type_float, 0);
prim_array.set_attributes(1, object_colours_vbo, 4, type_float, 0);
gs->shader_color_geometry.Use(gc, matrix_modelview_projection);
gc.set_texture(0, gs->texture_ball);
gc.draw_primitives(type_points, num_points, prim_array);
gc.reset_texture(0);
}
void Model_Impl::Draw(GraphicContext &gc, GraphicStore *gs, const Mat4f &modelview_matrix)
{
Mat4f matrix_modelview_projection = gs->camera_projection * modelview_matrix;
Mat3f normal_matrix = Mat3f(modelview_matrix);
normal_matrix.inverse();
normal_matrix.transpose();
PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, vbo_positions, 3, type_float, 0);
prim_array.set_attributes(1, vbo_normals, 3, type_float, 0);
gs->shader_color.SetMaterial(material_shininess, material_emission, material_ambient, material_specular);
gs->shader_color.Use(gc, modelview_matrix, matrix_modelview_projection, Mat4f(normal_matrix));
gc.draw_primitives(type_triangles, vbo_size, prim_array);
}
void Model_Impl::Draw(CL_GraphicContext &gc, GraphicStore *gs, const CL_Mat4f &modelview_matrix)
{
gc.set_modelview(modelview_matrix);
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, vbo_positions, 3, cl_type_float, (void *) 0);
prim_array.set_attributes(1, vbo_normals, 3, cl_type_float, (void *) 0);
gs->shader_color.SetMaterial(material_shininess, material_emission, material_ambient, material_specular);
gs->shader_color.Use(gc);
gc.draw_primitives(cl_triangles, vbo_size, prim_array);
}
void ObjectPolygon::Draw(CL_GraphicContext &gc, CL_Texture &texture_image)
{
ObjectVertex *vptr = m_pVertex;
CL_Vec3f positions[6];
CL_Vec3f texture_positions[6];
CL_Vec3f normals[6];
// We convert quads into triangles. This is silly, and this entire example should be rewritten to just use triangles
if (m_NumVertex!=4) throw CL_Exception("Ooops");
positions[0] = m_pVertex[0].m_Point;
texture_positions[0] = m_pVertex[0].m_TexturePoint;
normals[0] = m_Normal;
positions[1] = m_pVertex[1].m_Point;
texture_positions[1] = m_pVertex[1].m_TexturePoint;
normals[1] = m_Normal;
positions[2] = m_pVertex[2].m_Point;
texture_positions[2] = m_pVertex[2].m_TexturePoint;
normals[2] = m_Normal;
positions[3] = m_pVertex[2].m_Point;
texture_positions[3] = m_pVertex[2].m_TexturePoint;
normals[3] = m_Normal;
positions[4] = m_pVertex[3].m_Point;
texture_positions[4] = m_pVertex[3].m_TexturePoint;
normals[4] = m_Normal;
positions[5] = m_pVertex[0].m_Point;
texture_positions[5] = m_pVertex[0].m_TexturePoint;
normals[5] = m_Normal;
CL_PrimitivesArray prim_array(gc);
gc.set_texture(0, texture_image);
prim_array.set_attributes(cl_attrib_position, positions);
prim_array.set_attribute(cl_attrib_color, CL_Colorf(1.0f,1.0f,1.0f, 1.0f));
prim_array.set_attributes(cl_attrib_texture_position, texture_positions);
prim_array.set_attributes(cl_attrib_normal, normals);
gc.set_primitives_array(prim_array);
gc.draw_primitives_array(cl_triangles, 6);
gc.reset_texture(0);
gc.reset_primitives_array();
}
void GameTerrain::render_sprite(Canvas &canvas, const LightModel &light_model, Rectf dest)
{
canvas.push_modelview();
canvas.mult_scale(4.0f, 1.0f, 4.0f);
canvas.mult_modelview(Mat4f::translate(-size.width/2.0f, 0.0f, -size.height/2.0f));
gc.set_culled(true);
gc.set_front_face(cl_face_side_counter_clockwise);
PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, vertex_buffer, 3, cl_type_float, (int) &static_cast<Vertex*>(0)->position, sizeof(Vertex));
prim_array.set_attributes(1, vertex_buffer, 3, cl_type_float, (int) &static_cast<Vertex*>(0)->normal, sizeof(Vertex));
gc.set_texture(0, texture_base);
gc.set_texture(1, texture_areas);
gc.set_texture(2, texture_colors);
gc.set_texture(3, texture_borders);
gc.set_program_object(shader_program);
Material material;
// material.shininess = 25.0f;
shader_program.set_uniform4f("area", Vec4f(dest.left, dest.top, dest.get_width(), dest.get_height()));
shader_program.set_uniform1i("texture_base", 0);
shader_program.set_uniform1i("texture_areas", 1);
shader_program.set_uniform1i("texture_colors", 2);
shader_program.set_uniform1i("texture_borders", 3);
/*
shader_program.set_uniform("lightSourcePosition", light_model.light_sources[0].position);
shader_program.set_uniform("frontLightProductAmbient", light_model.get_light_ambient(material, light_model.light_sources[0]));
shader_program.set_uniform("frontLightProductDiffuse", light_model.get_light_diffuse(material, light_model.light_sources[0]));
shader_program.set_uniform("frontLightProductSpecular", light_model.get_light_specular(material, light_model.light_sources[0]));
shader_program.set_uniform("frontMaterialShininess", material.shininess);
shader_program.set_uniform("frontLightModelProductSceneColor", light_model.get_scene_color(material));
*/
gc.draw_primitives(type_triangles, num_vertices, prim_array);
gc.reset_program_object();
gc.reset_texture(0);
gc.reset_texture(1);
gc.reset_texture(2);
gc.reset_texture(3);
gc.reset_polygon_rasterizer();
canvas.pop_modelview();
}
void App::draw(CL_GraphicContext &gc, const CL_Rectf &rect)
{
CL_Vec2f positions[6] =
{
CL_Vec2f(rect.left, rect.top),
CL_Vec2f(rect.right, rect.top),
CL_Vec2f(rect.left, rect.bottom),
CL_Vec2f(rect.right, rect.top),
CL_Vec2f(rect.left, rect.bottom),
CL_Vec2f(rect.right, rect.bottom)
};
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, positions);
gc.draw_primitives(cl_triangles, 6, prim_array);
}
void CL_Draw::triangle(CL_GraphicContext &gc, const CL_Pointf &a, const CL_Pointf &b, const CL_Pointf &c, const CL_Colorf &color)
{
CL_Vec2f positions[3] =
{
CL_Vec2f(a.x, a.y),
CL_Vec2f(b.x, b.y),
CL_Vec2f(c.x, c.y)
};
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, positions);
prim_array.set_attribute(1, color);
gc.set_program_object(cl_program_color_only);
gc.draw_primitives(cl_triangles, 3, prim_array);
gc.reset_program_object();
}
void CL_Draw::box(CL_GraphicContext &gc, float x1, float y1, float x2, float y2, const CL_Colorf &color)
{
CL_Vec2f positions[4] =
{
CL_Vec2f(x1, y1),
CL_Vec2f(x2, y1),
CL_Vec2f(x2, y2),
CL_Vec2f(x1, y2)
};
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, positions);
prim_array.set_attribute(1, color);
gc.set_program_object(cl_program_color_only);
gc.draw_primitives(cl_line_loop, 4, prim_array);
gc.reset_program_object();
}
void Skybox::render(CL_GraphicContext &gc, const Camera &camera)
{
Camera cam = camera;
cam.get_position().set_position(0,0,0);
cam.setup_gc(gc, 0.1f, 10.0f);
gc.set_texture(0, skybox_texture);
gc.set_program_object(program_object);
program_object.set_uniform1i(("texture1"), 0);
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, positions);
gc.draw_primitives(cl_triangles, 6*6, prim_array);
gc.reset_program_object();
gc.reset_texture(0);
}
void Model_Impl::Draw(CL_GraphicContext &gc, GraphicStore *gs, const CL_Mat4f &modelview_matrix, bool is_draw_shadow)
{
gc.set_modelview(modelview_matrix);
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, vbo_positions, 3, cl_type_float, (void *) 0);
prim_array.set_attributes(1, vbo_normals, 3, cl_type_float, (void *) 0);
if (is_draw_shadow)
{
gs->shader_depth.Use(gc);
gc.draw_primitives(cl_triangles, vbo_size, prim_array);
}
else
{
if (!vbo_texcoords.is_null())
{
prim_array.set_attributes(2, vbo_texcoords, 2, cl_type_float, (void *) 0);
gs->shader_texture.SetShadowMatrix(gs->shadow_matrix);
gc.set_texture(0, gs->texture_brick);
gc.set_texture(1, gs->texture_shadow);
gs->shader_texture.SetMaterial(material_shininess, material_emission, material_ambient, material_specular);
gs->shader_texture.Use(gc);
}
else
{
gs->shader_color.SetMaterial(material_shininess, material_emission, material_ambient, material_specular);
gs->shader_color.Use(gc);
}
gc.draw_primitives(cl_triangles, vbo_size, prim_array);
gc.reset_texture(0);
gc.reset_texture(1);
}
}
void CL_Draw::texture(
CL_GraphicContext &gc,
const CL_Texture &texture,
const CL_Quadf &quad,
const CL_Colorf &color,
const CL_Rectf &texture_unit1_coords)
{
CL_Vec2f positions[6] =
{
CL_Vec2f(quad.p),
CL_Vec2f(quad.q),
CL_Vec2f(quad.s),
CL_Vec2f(quad.q),
CL_Vec2f(quad.s),
CL_Vec2f(quad.r)
};
CL_Vec2f tex1_coords[6] =
{
CL_Vec2f(texture_unit1_coords.left, texture_unit1_coords.top),
CL_Vec2f(texture_unit1_coords.right, texture_unit1_coords.top),
CL_Vec2f(texture_unit1_coords.left, texture_unit1_coords.bottom),
CL_Vec2f(texture_unit1_coords.right, texture_unit1_coords.top),
CL_Vec2f(texture_unit1_coords.left, texture_unit1_coords.bottom),
CL_Vec2f(texture_unit1_coords.right, texture_unit1_coords.bottom)
};
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, positions);
prim_array.set_attribute(1, color);
prim_array.set_attributes(2, tex1_coords);
gc.set_texture(0, texture);
gc.set_program_object(cl_program_single_texture);
gc.draw_primitives(cl_triangles, 6, prim_array);
gc.reset_program_object();
gc.reset_texture(0);
}
// The start of the Application
int App::start(const std::vector<CL_String> &args)
{
CL_DisplayWindowDescription win_desc;
win_desc.set_allow_resize(true);
win_desc.set_title("Vertex Buffer Object Example");
win_desc.set_depth_size(16);
win_desc.set_size(CL_Size( 800, 600 ), 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_GraphicContext gc = window.get_gc();
Shader shader(gc);
// Prepare the display
gc.set_map_mode(cl_user_projection);
CL_PolygonRasterizer polygon_rasterizer;
polygon_rasterizer.set_culled(true);
polygon_rasterizer.set_face_cull_mode(cl_cull_back);
polygon_rasterizer.set_front_face(cl_face_side_clockwise);
gc.set_polygon_rasterizer(polygon_rasterizer);
CL_BufferControl buffer_control;
buffer_control.enable_depth_test(true);
buffer_control.set_depth_compare_function(cl_comparefunc_lequal);
buffer_control.enable_depth_write(true);
gc.set_buffer_control(buffer_control);
std::vector<CL_Vec3f> object_positions;
std::vector<CL_Vec3f> object_normals;
std::vector<CL_Vec4f> object_material_ambient;
const int num_cubes = 20000;
object_positions.reserve(num_cubes * 6 * 6); // 6 faces, and 6 vertices per face
object_normals.reserve(num_cubes * 6 * 6);
object_material_ambient.reserve(num_cubes * 6 * 6);
for (int cnt=0; cnt < num_cubes; cnt++)
{
create_cube(object_positions, object_normals, object_material_ambient);
}
CL_VertexArrayBuffer vb_positions(gc, &object_positions[0], sizeof(CL_Vec3f) * object_positions.size());
CL_VertexArrayBuffer vb_normals(gc, &object_normals[0], sizeof(CL_Vec3f) * object_normals.size());
CL_VertexArrayBuffer vb_material_ambient(gc, &object_material_ambient[0], sizeof(CL_Vec4f) * object_material_ambient.size());
// ** Note, at this point "object_positions, object_normals and object_material_ambient"
// ** can be destroyed. But for the purpose of this example, is it kept
CL_Font fps_font(gc, "tahoma", 20);
FramerateCounter frameratecounter;
unsigned int time_last = CL_System::get_time();
float angle = 0.0f;
is_vertex_buffer_on = true;
while (!quit)
{
unsigned int time_now = CL_System::get_time();
float time_diff = (float) (time_now - time_last);
time_last = time_now;
gc.clear(CL_Colorf(0.0f, 0.0f, 0.0f, 1.0f));
gc.clear_depth(1.0f);
gc.set_map_mode(cl_map_2d_upper_left);
CL_String fps = cl_format("%1 fps", frameratecounter.get_framerate());
fps_font.draw_text(gc, gc.get_width() - 100, 30, fps);
CL_String info = cl_format("%1 vertices", (int) object_positions.size());
fps_font.draw_text(gc, 30, 30, info);
fps_font.draw_text(gc, 30, gc.get_height() - 8, "Press any key to toggle the Vertex Buffer option");
if (is_vertex_buffer_on)
{
fps_font.draw_text(gc, 200, 30, "Vertex Buffer = ON");
}
else
{
fps_font.draw_text(gc, 200, 30, "Vertex Buffer = OFF");
}
gc.set_map_mode(cl_user_projection);
CL_Mat4f perp = CL_Mat4f::perspective(45.0f, ((float) gc.get_width()) / ((float) gc.get_height()), 0.1f, 100000.0f);
gc.set_projection(perp);
angle += time_diff / 20.0f;
if (angle >= 360.0f)
angle -= 360.0f;
gc.push_modelview();
gc.set_modelview(CL_Mat4f::identity());
gc.mult_scale(1.0f,1.0f, -1.0f); // So +'ve Z goes into the screen
gc.mult_translate(0.0f, 0.0f, 800.0f);
gc.mult_rotate(CL_Angle(angle*2.0f, cl_degrees), 0.0f, 1.0f, 0.0f, false);
gc.mult_rotate(CL_Angle(angle, cl_degrees), 1.0f, 0.0f, 0.0f, false);
shader.Set(gc);
shader.Use(gc);
CL_PrimitivesArray prim_array(gc);
if (is_vertex_buffer_on)
{
prim_array.set_attributes(0, vb_positions, 3, cl_type_float, (void *) 0);
prim_array.set_attributes(1, vb_normals, 3, cl_type_float, (void *) 0);
prim_array.set_attributes(2, vb_material_ambient, 4, cl_type_float, (void *) 0);
}
else
{
prim_array.set_attributes(0, &object_positions[0]);
prim_array.set_attributes(1, &object_normals[0]);
prim_array.set_attributes(2, &object_material_ambient[0]);
}
gc.draw_primitives(cl_triangles, object_positions.size(), prim_array);
gc.pop_modelview();
gc.reset_program_object();
window.flip(0);
frameratecounter.frame_shown();
CL_KeepAlive::process();
}
return 0;
}
void Model_Impl::Draw(CL_GraphicContext &gc, GraphicStore *gs, const CL_Mat4f &modelview_matrix, bool use_geometry_shader)
{
if (!object_positions.size())
return;
if (update_vbo)
{
update_vbo = false;
if (object_texcoords.size())
{
object_texcoords_vbo = CL_VertexArrayBuffer(gc, &object_texcoords[0], sizeof(CL_Vec2f) * object_texcoords.size());
}
object_positions_vbo = CL_VertexArrayBuffer(gc, &object_positions[0], sizeof(CL_Vec3f) * object_positions.size());
object_normals_vbo = CL_VertexArrayBuffer(gc, &object_normals[0], sizeof(CL_Vec3f) * object_normals.size());
}
gc.set_modelview(modelview_matrix);
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, object_positions_vbo, 3, cl_type_float, (void *) 0);
prim_array.set_attributes(1, object_normals_vbo, 3, cl_type_float, (void *) 0);
if (!use_geometry_shader)
{
if (object_texcoords.size())
{
prim_array.set_attributes(2, object_texcoords_vbo, 2, cl_type_float, (void *) 0);
gc.set_texture(0, gs->texture_brick);
gs->shader_texture.SetMaterial(material_shininess, material_emission, material_ambient, material_specular);
gs->shader_texture.Use(gc);
}
else
{
gs->shader_color.SetMaterial(material_shininess, material_emission, material_ambient, material_specular);
gs->shader_color.Use(gc);
}
}
else
{
if (object_texcoords.size())
throw CL_Exception("Shader not supported");
gs->shader_color_geometry.SetMaterial(material_shininess, material_emission, material_ambient, material_specular);
gs->shader_color_geometry.Use(gc);
clDisable(CL_CULL_FACE); // For for example, so you can see inside the teapot
}
gc.draw_primitives(cl_triangles, object_positions.size(), prim_array);
if (use_geometry_shader)
clEnable(CL_CULL_FACE);
if (object_texcoords.size())
{
gc.reset_texture(0);
}
}
void App::recursive_render(CL_GraphicContext &gc, const struct aiScene *sc, const struct aiNode* nd, bool use_texture_coords)
{
int i;
unsigned int n = 0, t;
struct aiMatrix4x4 m = nd->mTransformation;
// update transform
aiTransposeMatrix4(&m);
gc.push_modelview();
gc.mult_modelview((float*)&m);
// draw all meshes assigned to this node
for (; n < nd->mNumMeshes; ++n)
{
const struct aiMesh* mesh = sc->mMeshes[nd->mMeshes[n]];
if (mesh->mNormals == NULL)
throw CL_Exception("This example expects normals to be set");
std::vector<CL_Vec3f> normals;
std::vector<CL_Vec3f> vertices;
std::vector<CL_Vec3f> tex_coords;
normals.reserve(mesh->mNumFaces * 3);
vertices.reserve(mesh->mNumFaces * 3);
if (use_texture_coords)
{
if (mesh->mTextureCoords == NULL || mesh->mTextureCoords[0] == NULL)
throw CL_Exception("This example expects texcoords to be set for this object");
tex_coords.reserve(mesh->mNumFaces * 3);
}
for (t = 0; t < mesh->mNumFaces; ++t)
{
const struct aiFace* face = &mesh->mFaces[t];
if (face->mNumIndices != 3)
throw CL_Exception("This example only supports triangles");
for(i = 0; i < face->mNumIndices; i++)
{
int index = face->mIndices[i];
normals.push_back(&mesh->mNormals[index].x);
vertices.push_back( &mesh->mVertices[index].x);
if (use_texture_coords)
tex_coords.push_back( &mesh->mTextureCoords[0][index].x);
}
}
if (!vertices.empty())
{
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(cl_attrib_position, &vertices[0]);
prim_array.set_attribute(cl_attrib_color, CL_Colorf::white);
prim_array.set_attributes(cl_attrib_normal, &normals[0]);
if (use_texture_coords)
prim_array.set_attributes(cl_attrib_texture_position, &tex_coords[0]);
gc.draw_primitives(cl_triangles, vertices.size(), prim_array);
}
}
// draw all children
for (n = 0; n < nd->mNumChildren; ++n)
{
recursive_render(gc, sc, nd->mChildren[n], use_texture_coords);
}
gc.pop_modelview();
}
// The start of the Application
int App::start(const std::vector<CL_String> &args)
{
quit = false;
CL_GL1WindowDescription desc;
desc.set_title("ClanLib Object 3D Example");
desc.set_size(CL_Size(640, 480), true);
desc.set_multisampling(4);
desc.set_depth_size(16);
CL_DisplayWindow window(desc);
#ifdef _DEBUG
//struct aiLogStream stream;
//stream = aiGetPredefinedLogStream(aiDefaultLogStream_STDOUT,NULL);
//aiAttachLogStream(&stream);
//stream = aiGetPredefinedLogStream(aiDefaultLogStream_FILE,"assimp_log.txt");
//aiAttachLogStream(&stream);
#endif
// Connect the Window close event
CL_Slot slot_quit = window.sig_window_close().connect(this, &App::on_window_close);
// Connect a keyboard handler to on_key_up()
CL_Slot slot_input_up = (window.get_ic().get_keyboard()).sig_key_up().connect(this, &App::on_input_up);
// Get the graphic context
CL_GraphicContext gc = window.get_gc();
#ifdef USE_OPENGL_1
CL_GraphicContext_GL1 gc_gl1 = gc;
#endif
// Prepare the display
gc.set_map_mode(cl_user_projection);
CL_PolygonRasterizer polygon_rasterizer;
polygon_rasterizer.set_culled(true);
polygon_rasterizer.set_face_cull_mode(cl_cull_back);
polygon_rasterizer.set_front_face(cl_face_side_clockwise);
gc.set_polygon_rasterizer(polygon_rasterizer);
CL_BufferControl buffer_control;
buffer_control.enable_depth_test(true);
buffer_control.set_depth_compare_function(cl_comparefunc_lequal);
buffer_control.enable_depth_write(true);
gc.set_buffer_control(buffer_control);
#ifdef USE_OPENGL_1
// Set the lights
CL_LightModel_GL1 light_model;
light_model.enable_lighting(true);
light_model.set_flat_shading(false);
light_model.set_scene_ambient_light(CL_Colorf(0.2f, 0.2f, 0.2f, 1.0f));
gc_gl1.set_light_model(light_model);
CL_LightSource_GL1 light_distant;
light_distant.set_spot_cutoff(180.0f);
light_distant.set_diffuse_intensity(CL_Colorf(1.0f, 1.0f, 1.0f, 1.0f));
light_distant.set_position(CL_Vec4f(0.0f, -2.0f, 30.0f, 0.0f).normalize3());
gc_gl1.set_light(0, light_distant);
cl1Enable(GL_NORMALIZE);
#endif
#ifdef USE_OPENGL_2
Shader shader(gc);
#endif
// Create the objects
aiSetImportPropertyFloat(AI_CONFIG_PP_GSN_MAX_SMOOTHING_ANGLE,89.53f);
const struct aiScene* scene_teapot = aiImportFile("../Clan3D/Resources/teapot.dae",aiProcessPreset_TargetRealtime_MaxQuality);
if (!scene_teapot)
throw CL_Exception("Cannot load the teapot model");
const struct aiScene* scene_clanlib = aiImportFile("../Clan3D/Resources/clanlib.dae",aiProcessPreset_TargetRealtime_MaxQuality);
if (!scene_clanlib)
throw CL_Exception("Cannot load the clanlib model");
const struct aiScene* scene_tuxball = aiImportFile("../Clan3D/Resources/tux_ball.dae",aiProcessPreset_TargetRealtime_MaxQuality | aiProcess_FlipUVs);
if (!scene_tuxball)
throw CL_Exception("Cannot load the tux ball model");
// Load the texture
CL_Texture tux(gc, "../Clan3D/Resources/tux.png");
float angle = 0.0f;
// Run until someone presses escape
while (!quit)
{
CL_Mat4f perp = CL_Mat4f::perspective(45.0f, ((float) gc.get_width()) / ((float) gc.get_height()), 0.1f, 1000.0f);
gc.set_projection(perp);
gc.clear(CL_Colorf::black);
gc.clear_depth(1.0f);
angle += 1.0f;
if (angle >= 360.0f)
angle -= 360.0f;
#ifdef USE_OPENGL_2
shader.Set(gc);
shader.Use(gc);
#else
gc.set_program_object(cl_program_color_only);
#endif
CL_PrimitivesArray prim_array(gc);
gc.set_modelview(CL_Mat4f::identity());
gc.mult_scale(1.0f,1.0f, -1.0f); // So +'ve Z goes into the screen
gc.mult_translate(0.0f, 0.0f, 2.0f);
gc.mult_rotate(CL_Angle(angle, cl_degrees), 0.0f, 1.0f, 0.0f, false);
gc.push_modelview();
recursive_render(gc, scene_teapot, scene_teapot->mRootNode, false);
gc.pop_modelview();
gc.push_modelview();
gc.mult_scale(0.5f, 0.5f, 0.5f);
gc.mult_translate(0.0f, -0.5f, 0.0f);
recursive_render(gc, scene_clanlib, scene_clanlib->mRootNode, false);
gc.pop_modelview();
#ifdef USE_OPENGL_2
shader.Set(gc, 0);
shader.Use(gc);
#else
gc.set_program_object(cl_program_single_texture);
#endif
gc.set_texture(0, tux);
gc.set_modelview(CL_Mat4f::identity());
gc.mult_scale(1.0f,1.0f, -1.0f); // So +'ve Z goes into the screen
gc.mult_translate(0.7f, 0.5f, 2.0f);
gc.mult_scale(0.05f, 0.05f, 0.05f);
gc.mult_rotate(CL_Angle(angle * 4.0f, cl_degrees), 0.0f, 1.0f, 0.0f, false);
recursive_render(gc, scene_tuxball, scene_tuxball->mRootNode, true);
gc.reset_texture(0);
gc.reset_program_object();
// Flip the display, showing on the screen what we have drawed
// since last call to flip()
window.flip(1);
// This call processes user input and other events
CL_KeepAlive::process();
}
aiReleaseImport(scene_tuxball);
aiReleaseImport(scene_clanlib);
aiReleaseImport(scene_teapot);
aiDetachAllLogStreams();
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;
}
int App::start(const std::vector<std::string> &args)
{
OpenGLWindowDescription description;
description.set_title("UniformBlock Shader");
//description.set_version(3, 1, false);
description.set_size(Size(1024, 768), true);
DisplayWindow window(description);
InputDevice keyboard = window.get_ic().get_keyboard();
GraphicContext gc = window.get_gc();
Slot slot_input_up = (window.get_ic().get_keyboard()).sig_key_up().connect(this, &App::on_input_up);
Slot slot_window_close = window.sig_window_close().connect(this, &App::window_close);
// Load and link shaders
ProgramObject shader = ProgramObject::load(gc, "Resources/vertex_shader.glsl", "Resources/fragment_shader.glsl");
shader.bind_attribute_location(0, "Position");
if (!shader.link())
throw Exception("Unable to link shader program: Error:" + shader.get_info_log());
int block_size = shader.get_uniform_block_size("TestBlock");
const int num_blocks = 16;
ProgramUniformBlock block(gc, block_size * num_blocks);
std::vector<float> data_to_upload;
data_to_upload.resize((num_blocks * block_size) / sizeof(float) );
float test_colour = 1.0f;
for (int cnt=0; cnt<num_blocks; cnt++)
{
int offset = cnt * block_size / sizeof(float) ;
data_to_upload[offset + 0] = test_colour;
data_to_upload[offset + 1] = 0.5f;
data_to_upload[offset + 2] = 1.0f;
test_colour -= 0.05f;
}
block.upload_data(0, &data_to_upload[0], block_size * num_blocks);
quit = false;
Font font(gc, "tahoma", 32);
clan::ubyte64 startTime = System::get_time();
//// Test code
//GLuint uniform_index = -1;
//const char *names[] = {"src_color"};
//glGetUniformIndices(handle, 1, names, &uniform_index);
//if (uniform_index >=0)
//{
// GLint offset;
// GLint singleSize;
// GLint uniform_type;
// glGetActiveUniformsiv(handle, 1, &uniform_index, GL_UNIFORM_TYPE, &uniform_type);
// glGetActiveUniformsiv(handle, 1, &uniform_index, GL_UNIFORM_OFFSET, &offset);
// glGetActiveUniformsiv(handle, 1, &uniform_index, GL_UNIFORM_SIZE, &singleSize);
// if ((uniform_type != GL_FLOAT_VEC3) || (offset !=0) || (singleSize != 1))
// {
// throw Exception("well it seems it does not work");
// }
//}
while (!quit)
{
gc.clear(Colorf(0.1f, 0.1f, 0.2f));
OpenGL::check_error();
for (int test_run_y=0; test_run_y < 16; test_run_y++)
{
shader.set_uniform_block("TestBlock", block, test_run_y*block_size);
for (int test_run_x=0; test_run_x < 16; test_run_x++)
{
Vec2f positions[3];
float size = 32.0f;
positions[0].x = test_run_x * size;
positions[0].y = test_run_y * size + size;
positions[1].x = test_run_x * size + size;
positions[1].y = test_run_y * size + size;
positions[2].x = test_run_x * size + size;
positions[2].y = test_run_y * size;
PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, positions);
gc.set_program_object(shader, cl_program_matrix_modelview_projection);
gc.draw_primitives(cl_triangles, 3, prim_array);
gc.reset_program_object();
}
}
font.draw_text(gc, 32, 200, "Hello World");
window.flip(1);
KeepAlive::process();
}
return 0;
}
void CL_Draw::gradient_circle(CL_GraphicContext &gc, const CL_Pointf ¢er, const CL_Pointf ¢ergradient, float radius, const CL_Gradient &gradient)
{
float offset_x = 0;
float offset_y = 0;
if(radius < 4)
radius = 4;
float rotationcount = (radius - 3);
float halfpi = 1.5707963267948966192313216916398f;
float turn = halfpi / rotationcount;
if(center.distance(center + centergradient) < radius)
{
offset_x = centergradient.x;
offset_y = -centergradient.y;
}
CL_Vec4f colors[3] =
{
CL_Vec4f(gradient.top_left.get_red(), gradient.top_left.get_green(), gradient.top_left.get_blue(), gradient.top_left.get_alpha()),
CL_Vec4f(gradient.bottom_right.get_red(), gradient.bottom_right.get_green(), gradient.bottom_right.get_blue(), gradient.bottom_right.get_alpha()),
CL_Vec4f(gradient.bottom_right.get_red(), gradient.bottom_right.get_green(), gradient.bottom_right.get_blue(), gradient.bottom_right.get_alpha())
};
CL_Vec4f triangle_colors[4*3];
for (int i=0; i<3; i++)
{
triangle_colors[0*3+i] = colors[i];
triangle_colors[1*3+i] = colors[i];
triangle_colors[2*3+i] = colors[i];
triangle_colors[3*3+i] = colors[i];
}
for(float i = 0; i < rotationcount ; i++)
{
float pos1 = cos(i * turn);
float pos2 = sin(i * turn);
float pos3 = cos((i+1) * turn);
float pos4 = sin((i+1) * turn);
CL_Vec2f positions[4*3] =
{
// 90 triangle:
CL_Vec2f(center.x + offset_x , center.y + offset_y),
CL_Vec2f(center.x + ((float)radius * pos1), center.y + ((float)radius * pos2)),
CL_Vec2f(center.x + ((float)radius * pos3), center.y + ((float)radius * pos4)),
// 0 triangle:
CL_Vec2f(center.x + offset_x , center.y + offset_y),
CL_Vec2f(center.x + ((float)radius * pos2), center.y - ((float)radius * pos1)),
CL_Vec2f(center.x + ((float)radius * pos4), center.y - ((float)radius * pos3)),
// 270 triangle:
CL_Vec2f(center.x + offset_x , center.y + offset_y),
CL_Vec2f(center.x - ((float)radius * pos1), center.y - ((float)radius * pos2)),
CL_Vec2f(center.x - ((float)radius * pos3), center.y - ((float)radius * pos4)),
// 180 triangle:
CL_Vec2f(center.x + offset_x , center.y + offset_y),
CL_Vec2f(center.x - ((float)radius * pos2), center.y + ((float)radius * pos1)),
CL_Vec2f(center.x - ((float)radius * pos4), center.y + ((float)radius * pos3))
};
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, positions);
prim_array.set_attributes(1, triangle_colors);
gc.set_program_object(cl_program_color_only);
gc.draw_primitives(cl_triangles, 4*3, prim_array);
gc.reset_program_object();
}
}
