本文整理汇总了C++中ProgramObject::set_uniform_block方法的典型用法代码示例。如果您正苦于以下问题：C++ ProgramObject::set_uniform_block方法的具体用法？C++ ProgramObject::set_uniform_block怎么用？C++ ProgramObject::set_uniform_block使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ProgramObject的用法示例。
在下文中一共展示了ProgramObject::set_uniform_block方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: start
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();
//.........这里部分代码省略.........