Method prepare_cube_data_buffers

cube/cube.cpp:2400–2450

}

void Demo::prepare_cube_data_buffers() {
    mat4x4 VP;
    mat4x4_mul(VP, projection_matrix, view_matrix);

    mat4x4 MVP;
    mat4x4_mul(MVP, VP, model_matrix);

    vktexcube_vs_uniform data;
    memcpy(data.mvp, MVP, sizeof(MVP));
    //    dumpMatrix("MVP", MVP)

    for (int32_t i = 0; i < 12 * 3; i++) {
        data.position[i][0] = g_vertex_buffer_data[i * 3];
        data.position[i][1] = g_vertex_buffer_data[i * 3 + 1];
        data.position[i][2] = g_vertex_buffer_data[i * 3 + 2];
        data.position[i][3] = 1.0f;
        data.attr[i][0] = g_uv_buffer_data[2 * i];
        data.attr[i][1] = g_uv_buffer_data[2 * i + 1];
        data.attr[i][2] = 0;
        data.attr[i][3] = 0;
    }

    auto const buf_info = vk::BufferCreateInfo().setSize(sizeof(data)).setUsage(vk::BufferUsageFlagBits::eUniformBuffer);

    for (auto &submission_resource : submission_resources) {
        auto result = device.createBuffer(&buf_info, nullptr, &submission_resource.uniform_buffer);
        VERIFY(result == vk::Result::eSuccess);

        vk::MemoryRequirements mem_reqs;
        device.getBufferMemoryRequirements(submission_resource.uniform_buffer, &mem_reqs);

        auto mem_alloc = vk::MemoryAllocateInfo().setAllocationSize(mem_reqs.size).setMemoryTypeIndex(0);

        bool const pass = memory_type_from_properties(
            mem_reqs.memoryTypeBits, vk::MemoryPropertyFlagBits::eHostVisible | vk::MemoryPropertyFlagBits::eHostCoherent,
            mem_alloc.memoryTypeIndex);
        VERIFY(pass);

        result = device.allocateMemory(&mem_alloc, nullptr, &submission_resource.uniform_memory);
        VERIFY(result == vk::Result::eSuccess);

        result = device.mapMemory(submission_resource.uniform_memory, 0, VK_WHOLE_SIZE, vk::MemoryMapFlags(),
                                  &submission_resource.uniform_memory_ptr);
        VERIFY(result == vk::Result::eSuccess);

        memcpy(submission_resource.uniform_memory_ptr, &data, sizeof data);

        result = device.bindBufferMemory(submission_resource.uniform_buffer, submission_resource.uniform_memory, 0);
        VERIFY(result == vk::Result::eSuccess);
    }
}

void Demo::prepare_depth() {
    depth.format = vk::Format::eD16Unorm;