dolphin/Source/Core/VideoBackends/Vulkan/RasterFont.cpp

422 lines
18 KiB
C++

// Copyright 2016 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "VideoBackends/Vulkan/RasterFont.h"
#include <cstring>
#include <vector>
#include "VideoBackends/Vulkan/CommandBufferManager.h"
#include "VideoBackends/Vulkan/Texture2D.h"
#include "VideoBackends/Vulkan/Util.h"
#include "VideoBackends/Vulkan/VulkanContext.h"
// Based on OGL RasterFont
// TODO: We should move this to common.
namespace Vulkan
{
constexpr int CHARACTER_WIDTH = 8;
constexpr int CHARACTER_HEIGHT = 13;
constexpr int CHARACTER_OFFSET = 32;
constexpr int CHARACTER_COUNT = 95;
static const u8 rasters[CHARACTER_COUNT][CHARACTER_HEIGHT] = {
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x36, 0x36, 0x36},
{0x00, 0x00, 0x00, 0x66, 0x66, 0xff, 0x66, 0x66, 0xff, 0x66, 0x66, 0x00, 0x00},
{0x00, 0x00, 0x18, 0x7e, 0xff, 0x1b, 0x1f, 0x7e, 0xf8, 0xd8, 0xff, 0x7e, 0x18},
{0x00, 0x00, 0x0e, 0x1b, 0xdb, 0x6e, 0x30, 0x18, 0x0c, 0x76, 0xdb, 0xd8, 0x70},
{0x00, 0x00, 0x7f, 0xc6, 0xcf, 0xd8, 0x70, 0x70, 0xd8, 0xcc, 0xcc, 0x6c, 0x38},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x1c, 0x0c, 0x0e},
{0x00, 0x00, 0x0c, 0x18, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x18, 0x0c},
{0x00, 0x00, 0x30, 0x18, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x18, 0x30},
{0x00, 0x00, 0x00, 0x00, 0x99, 0x5a, 0x3c, 0xff, 0x3c, 0x5a, 0x99, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x18, 0x18, 0x18, 0xff, 0xff, 0x18, 0x18, 0x18, 0x00, 0x00},
{0x00, 0x00, 0x30, 0x18, 0x1c, 0x1c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x38, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x60, 0x60, 0x30, 0x30, 0x18, 0x18, 0x0c, 0x0c, 0x06, 0x06, 0x03, 0x03},
{0x00, 0x00, 0x3c, 0x66, 0xc3, 0xe3, 0xf3, 0xdb, 0xcf, 0xc7, 0xc3, 0x66, 0x3c},
{0x00, 0x00, 0x7e, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x78, 0x38, 0x18},
{0x00, 0x00, 0xff, 0xc0, 0xc0, 0x60, 0x30, 0x18, 0x0c, 0x06, 0x03, 0xe7, 0x7e},
{0x00, 0x00, 0x7e, 0xe7, 0x03, 0x03, 0x07, 0x7e, 0x07, 0x03, 0x03, 0xe7, 0x7e},
{0x00, 0x00, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0xff, 0xcc, 0x6c, 0x3c, 0x1c, 0x0c},
{0x00, 0x00, 0x7e, 0xe7, 0x03, 0x03, 0x07, 0xfe, 0xc0, 0xc0, 0xc0, 0xc0, 0xff},
{0x00, 0x00, 0x7e, 0xe7, 0xc3, 0xc3, 0xc7, 0xfe, 0xc0, 0xc0, 0xc0, 0xe7, 0x7e},
{0x00, 0x00, 0x30, 0x30, 0x30, 0x30, 0x18, 0x0c, 0x06, 0x03, 0x03, 0x03, 0xff},
{0x00, 0x00, 0x7e, 0xe7, 0xc3, 0xc3, 0xe7, 0x7e, 0xe7, 0xc3, 0xc3, 0xe7, 0x7e},
{0x00, 0x00, 0x7e, 0xe7, 0x03, 0x03, 0x03, 0x7f, 0xe7, 0xc3, 0xc3, 0xe7, 0x7e},
{0x00, 0x00, 0x00, 0x38, 0x38, 0x00, 0x00, 0x38, 0x38, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x30, 0x18, 0x1c, 0x1c, 0x00, 0x00, 0x1c, 0x1c, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x06, 0x0c, 0x18, 0x30, 0x60, 0xc0, 0x60, 0x30, 0x18, 0x0c, 0x06},
{0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x60, 0x30, 0x18, 0x0c, 0x06, 0x03, 0x06, 0x0c, 0x18, 0x30, 0x60},
{0x00, 0x00, 0x18, 0x00, 0x00, 0x18, 0x18, 0x0c, 0x06, 0x03, 0xc3, 0xc3, 0x7e},
{0x00, 0x00, 0x3f, 0x60, 0xcf, 0xdb, 0xd3, 0xdd, 0xc3, 0x7e, 0x00, 0x00, 0x00},
{0x00, 0x00, 0xc3, 0xc3, 0xc3, 0xc3, 0xff, 0xc3, 0xc3, 0xc3, 0x66, 0x3c, 0x18},
{0x00, 0x00, 0xfe, 0xc7, 0xc3, 0xc3, 0xc7, 0xfe, 0xc7, 0xc3, 0xc3, 0xc7, 0xfe},
{0x00, 0x00, 0x7e, 0xe7, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xe7, 0x7e},
{0x00, 0x00, 0xfc, 0xce, 0xc7, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc7, 0xce, 0xfc},
{0x00, 0x00, 0xff, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xff},
{0x00, 0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xc0, 0xc0, 0xc0, 0xff},
{0x00, 0x00, 0x7e, 0xe7, 0xc3, 0xc3, 0xcf, 0xc0, 0xc0, 0xc0, 0xc0, 0xe7, 0x7e},
{0x00, 0x00, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xff, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3},
{0x00, 0x00, 0x7e, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x7e},
{0x00, 0x00, 0x7c, 0xee, 0xc6, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06},
{0x00, 0x00, 0xc3, 0xc6, 0xcc, 0xd8, 0xf0, 0xe0, 0xf0, 0xd8, 0xcc, 0xc6, 0xc3},
{0x00, 0x00, 0xff, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0},
{0x00, 0x00, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xdb, 0xff, 0xff, 0xe7, 0xc3},
{0x00, 0x00, 0xc7, 0xc7, 0xcf, 0xcf, 0xdf, 0xdb, 0xfb, 0xf3, 0xf3, 0xe3, 0xe3},
{0x00, 0x00, 0x7e, 0xe7, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xe7, 0x7e},
{0x00, 0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfe, 0xc7, 0xc3, 0xc3, 0xc7, 0xfe},
{0x00, 0x00, 0x3f, 0x6e, 0xdf, 0xdb, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0x66, 0x3c},
{0x00, 0x00, 0xc3, 0xc6, 0xcc, 0xd8, 0xf0, 0xfe, 0xc7, 0xc3, 0xc3, 0xc7, 0xfe},
{0x00, 0x00, 0x7e, 0xe7, 0x03, 0x03, 0x07, 0x7e, 0xe0, 0xc0, 0xc0, 0xe7, 0x7e},
{0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0xff},
{0x00, 0x00, 0x7e, 0xe7, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3},
{0x00, 0x00, 0x18, 0x3c, 0x3c, 0x66, 0x66, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3},
{0x00, 0x00, 0xc3, 0xe7, 0xff, 0xff, 0xdb, 0xdb, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3},
{0x00, 0x00, 0xc3, 0x66, 0x66, 0x3c, 0x3c, 0x18, 0x3c, 0x3c, 0x66, 0x66, 0xc3},
{0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x3c, 0x3c, 0x66, 0x66, 0xc3},
{0x00, 0x00, 0xff, 0xc0, 0xc0, 0x60, 0x30, 0x7e, 0x0c, 0x06, 0x03, 0x03, 0xff},
{0x00, 0x00, 0x3c, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x3c},
{0x00, 0x03, 0x03, 0x06, 0x06, 0x0c, 0x0c, 0x18, 0x18, 0x30, 0x30, 0x60, 0x60},
{0x00, 0x00, 0x3c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x3c},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc3, 0x66, 0x3c, 0x18},
{0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x38, 0x30, 0x70},
{0x00, 0x00, 0x7f, 0xc3, 0xc3, 0x7f, 0x03, 0xc3, 0x7e, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0xfe, 0xc3, 0xc3, 0xc3, 0xc3, 0xfe, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0},
{0x00, 0x00, 0x7e, 0xc3, 0xc0, 0xc0, 0xc0, 0xc3, 0x7e, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x7f, 0xc3, 0xc3, 0xc3, 0xc3, 0x7f, 0x03, 0x03, 0x03, 0x03, 0x03},
{0x00, 0x00, 0x7f, 0xc0, 0xc0, 0xfe, 0xc3, 0xc3, 0x7e, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x30, 0x30, 0x30, 0x30, 0x30, 0xfc, 0x30, 0x30, 0x30, 0x33, 0x1e},
{0x7e, 0xc3, 0x03, 0x03, 0x7f, 0xc3, 0xc3, 0xc3, 0x7e, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xfe, 0xc0, 0xc0, 0xc0, 0xc0},
{0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00, 0x00, 0x18, 0x00},
{0x38, 0x6c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x00, 0x00, 0x0c, 0x00},
{0x00, 0x00, 0xc6, 0xcc, 0xf8, 0xf0, 0xd8, 0xcc, 0xc6, 0xc0, 0xc0, 0xc0, 0xc0},
{0x00, 0x00, 0x7e, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x78},
{0x00, 0x00, 0xdb, 0xdb, 0xdb, 0xdb, 0xdb, 0xdb, 0xfe, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xfc, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x7c, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0x7c, 0x00, 0x00, 0x00, 0x00},
{0xc0, 0xc0, 0xc0, 0xfe, 0xc3, 0xc3, 0xc3, 0xc3, 0xfe, 0x00, 0x00, 0x00, 0x00},
{0x03, 0x03, 0x03, 0x7f, 0xc3, 0xc3, 0xc3, 0xc3, 0x7f, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xe0, 0xfe, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0xfe, 0x03, 0x03, 0x7e, 0xc0, 0xc0, 0x7f, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x1c, 0x36, 0x30, 0x30, 0x30, 0x30, 0xfc, 0x30, 0x30, 0x30, 0x00},
{0x00, 0x00, 0x7e, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x18, 0x3c, 0x3c, 0x66, 0x66, 0xc3, 0xc3, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0xc3, 0xe7, 0xff, 0xdb, 0xc3, 0xc3, 0xc3, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0xc3, 0x66, 0x3c, 0x18, 0x3c, 0x66, 0xc3, 0x00, 0x00, 0x00, 0x00},
{0xc0, 0x60, 0x60, 0x30, 0x18, 0x3c, 0x66, 0x66, 0xc3, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0xff, 0x60, 0x30, 0x18, 0x0c, 0x06, 0xff, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x0f, 0x18, 0x18, 0x18, 0x38, 0xf0, 0x38, 0x18, 0x18, 0x18, 0x0f},
{0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18},
{0x00, 0x00, 0xf0, 0x18, 0x18, 0x18, 0x1c, 0x0f, 0x1c, 0x18, 0x18, 0x18, 0xf0},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x8f, 0xf1, 0x60, 0x00, 0x00, 0x00}};
static const char VERTEX_SHADER_SOURCE[] = R"(
layout(std140, push_constant) uniform PCBlock {
vec2 char_size;
vec2 offset;
vec4 color;
} PC;
layout(location = 0) in vec4 ipos;
layout(location = 5) in vec4 icol0;
layout(location = 8) in vec3 itex0;
layout(location = 0) out vec2 uv0;
void main()
{
gl_Position = vec4(ipos.xy + PC.offset, 0.0f, 1.0f);
gl_Position.y = -gl_Position.y;
uv0 = itex0.xy * PC.char_size;
}
)";
static const char FRAGMENT_SHADER_SOURCE[] = R"(
layout(std140, push_constant) uniform PCBlock {
vec2 char_size;
vec2 offset;
vec4 color;
} PC;
layout(set = 1, binding = 0) uniform sampler2DArray samp0;
layout(location = 0) in vec2 uv0;
layout(location = 0) out vec4 ocol0;
void main()
{
ocol0 = texture(samp0, float3(uv0, 0.0)) * PC.color;
}
)";
RasterFont::RasterFont()
{
}
RasterFont::~RasterFont()
{
if (m_vertex_shader != VK_NULL_HANDLE)
vkDestroyShaderModule(g_vulkan_context->GetDevice(), m_vertex_shader, nullptr);
if (m_fragment_shader != VK_NULL_HANDLE)
vkDestroyShaderModule(g_vulkan_context->GetDevice(), m_fragment_shader, nullptr);
}
const Texture2D* RasterFont::GetTexture() const
{
return m_texture.get();
}
bool RasterFont::Initialize()
{
// Create shaders and texture
if (!CreateShaders() || !CreateTexture())
return false;
return true;
}
bool RasterFont::CreateTexture()
{
// generate the texture
std::vector<u32> texture_data(CHARACTER_WIDTH * CHARACTER_COUNT * CHARACTER_HEIGHT);
for (int y = 0; y < CHARACTER_HEIGHT; y++)
{
for (int c = 0; c < CHARACTER_COUNT; c++)
{
for (int x = 0; x < CHARACTER_WIDTH; x++)
{
bool pixel = (0 != (rasters[c][y] & (1 << (CHARACTER_WIDTH - x - 1))));
texture_data[CHARACTER_WIDTH * CHARACTER_COUNT * y + CHARACTER_WIDTH * c + x] =
pixel ? -1 : 0;
}
}
}
// create the actual texture object
m_texture = Texture2D::Create(CHARACTER_WIDTH * CHARACTER_COUNT, CHARACTER_HEIGHT, 1, 1,
VK_FORMAT_R8G8B8A8_UNORM, VK_SAMPLE_COUNT_1_BIT,
VK_IMAGE_VIEW_TYPE_2D_ARRAY, VK_IMAGE_TILING_OPTIMAL,
VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT);
if (!m_texture)
return false;
// create temporary buffer for uploading texture
VkBufferCreateInfo buffer_info = {VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
nullptr,
0,
static_cast<VkDeviceSize>(texture_data.size() * sizeof(u32)),
VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
VK_SHARING_MODE_EXCLUSIVE,
0,
nullptr};
VkBuffer temp_buffer;
VkResult res = vkCreateBuffer(g_vulkan_context->GetDevice(), &buffer_info, nullptr, &temp_buffer);
if (res != VK_SUCCESS)
{
LOG_VULKAN_ERROR(res, "vkCreateBuffer failed: ");
return false;
}
VkMemoryRequirements memory_requirements;
vkGetBufferMemoryRequirements(g_vulkan_context->GetDevice(), temp_buffer, &memory_requirements);
uint32_t memory_type_index = g_vulkan_context->GetMemoryType(memory_requirements.memoryTypeBits,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT);
VkMemoryAllocateInfo memory_allocate_info = {VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO, nullptr,
memory_requirements.size, memory_type_index};
VkDeviceMemory temp_buffer_memory;
res = vkAllocateMemory(g_vulkan_context->GetDevice(), &memory_allocate_info, nullptr,
&temp_buffer_memory);
if (res != VK_SUCCESS)
{
LOG_VULKAN_ERROR(res, "vkAllocateMemory failed: ");
vkDestroyBuffer(g_vulkan_context->GetDevice(), temp_buffer, nullptr);
return false;
}
// Bind buffer to memory
res = vkBindBufferMemory(g_vulkan_context->GetDevice(), temp_buffer, temp_buffer_memory, 0);
if (res != VK_SUCCESS)
{
LOG_VULKAN_ERROR(res, "vkBindBufferMemory failed: ");
vkDestroyBuffer(g_vulkan_context->GetDevice(), temp_buffer, nullptr);
vkFreeMemory(g_vulkan_context->GetDevice(), temp_buffer_memory, nullptr);
return false;
}
// Copy into buffer
void* mapped_ptr;
res = vkMapMemory(g_vulkan_context->GetDevice(), temp_buffer_memory, 0, buffer_info.size, 0,
&mapped_ptr);
if (res != VK_SUCCESS)
{
LOG_VULKAN_ERROR(res, "vkMapMemory failed: ");
vkDestroyBuffer(g_vulkan_context->GetDevice(), temp_buffer, nullptr);
vkFreeMemory(g_vulkan_context->GetDevice(), temp_buffer_memory, nullptr);
return false;
}
// Copy texture data into staging buffer
memcpy(mapped_ptr, texture_data.data(), texture_data.size() * sizeof(u32));
vkUnmapMemory(g_vulkan_context->GetDevice(), temp_buffer_memory);
// Copy from staging buffer to the final texture
VkBufferImageCopy region = {0,
CHARACTER_WIDTH * CHARACTER_COUNT,
CHARACTER_HEIGHT,
{VK_IMAGE_ASPECT_COLOR_BIT, 0, 0, 1},
{0, 0, 0},
{CHARACTER_WIDTH * CHARACTER_COUNT, CHARACTER_HEIGHT, 1}};
m_texture->TransitionToLayout(g_command_buffer_mgr->GetCurrentInitCommandBuffer(),
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
vkCmdCopyBufferToImage(g_command_buffer_mgr->GetCurrentInitCommandBuffer(), temp_buffer,
m_texture->GetImage(), VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);
// Free temp buffers after command buffer executes
m_texture->TransitionToLayout(g_command_buffer_mgr->GetCurrentInitCommandBuffer(),
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
g_command_buffer_mgr->DeferBufferDestruction(temp_buffer);
g_command_buffer_mgr->DeferDeviceMemoryDestruction(temp_buffer_memory);
return true;
}
bool RasterFont::CreateShaders()
{
m_vertex_shader = Util::CompileAndCreateVertexShader(VERTEX_SHADER_SOURCE);
m_fragment_shader = Util::CompileAndCreateFragmentShader(FRAGMENT_SHADER_SOURCE);
return m_vertex_shader != VK_NULL_HANDLE && m_fragment_shader != VK_NULL_HANDLE;
}
void RasterFont::PrintMultiLineText(VkRenderPass render_pass, const std::string& text,
float start_x, float start_y, u32 bbWidth, u32 bbHeight,
u32 color)
{
// skip empty strings
if (text.empty())
return;
UtilityShaderDraw draw(g_command_buffer_mgr->GetCurrentCommandBuffer(),
g_object_cache->GetPipelineLayout(PIPELINE_LAYOUT_PUSH_CONSTANT),
render_pass, m_vertex_shader, VK_NULL_HANDLE, m_fragment_shader,
PrimitiveType::Triangles);
UtilityShaderVertex* vertices = draw.ReserveVertices(text.length() * 6);
size_t num_vertices = 0;
if (!vertices)
return;
float delta_x = float(2 * CHARACTER_WIDTH) / float(bbWidth);
float delta_y = float(2 * CHARACTER_HEIGHT) / float(bbHeight);
float border_x = 2.0f / float(bbWidth);
float border_y = 4.0f / float(bbHeight);
float x = float(start_x);
float y = float(start_y);
for (const char& c : text)
{
if (c == '\n')
{
x = float(start_x);
y -= delta_y + border_y;
continue;
}
// do not print spaces, they can be skipped easily
if (c == ' ')
{
x += delta_x + border_x;
continue;
}
if (c < CHARACTER_OFFSET || c >= CHARACTER_COUNT + CHARACTER_OFFSET)
continue;
vertices[num_vertices].SetPosition(x, y);
vertices[num_vertices].SetTextureCoordinates(static_cast<float>(c - CHARACTER_OFFSET), 0.0f);
num_vertices++;
vertices[num_vertices].SetPosition(x + delta_x, y);
vertices[num_vertices].SetTextureCoordinates(static_cast<float>(c - CHARACTER_OFFSET + 1),
0.0f);
num_vertices++;
vertices[num_vertices].SetPosition(x + delta_x, y + delta_y);
vertices[num_vertices].SetTextureCoordinates(static_cast<float>(c - CHARACTER_OFFSET + 1),
1.0f);
num_vertices++;
vertices[num_vertices].SetPosition(x, y);
vertices[num_vertices].SetTextureCoordinates(static_cast<float>(c - CHARACTER_OFFSET), 0.0f);
num_vertices++;
vertices[num_vertices].SetPosition(x + delta_x, y + delta_y);
vertices[num_vertices].SetTextureCoordinates(static_cast<float>(c - CHARACTER_OFFSET + 1),
1.0f);
num_vertices++;
vertices[num_vertices].SetPosition(x, y + delta_y);
vertices[num_vertices].SetTextureCoordinates(static_cast<float>(c - CHARACTER_OFFSET), 1.0f);
num_vertices++;
x += delta_x + border_x;
}
// skip all whitespace strings
if (num_vertices == 0)
return;
draw.CommitVertices(num_vertices);
struct PCBlock
{
float char_size[2];
float offset[2];
float color[4];
} pc_block = {};
pc_block.char_size[0] = 1.0f / static_cast<float>(CHARACTER_COUNT);
pc_block.char_size[1] = 1.0f;
// shadows
pc_block.offset[0] = 2.0f / bbWidth;
pc_block.offset[1] = -2.0f / bbHeight;
pc_block.color[3] = (color >> 24) / 255.0f;
draw.SetPushConstants(&pc_block, sizeof(pc_block));
draw.SetPSSampler(0, m_texture->GetView(), g_object_cache->GetLinearSampler());
// Setup alpha blending
BlendingState blend_state = RenderState::GetNoBlendingBlendState();
blend_state.blendenable = true;
blend_state.srcfactor = BlendMode::SRCALPHA;
blend_state.dstfactor = BlendMode::INVSRCALPHA;
draw.SetBlendState(blend_state);
draw.Draw();
// non-shadowed part
pc_block.offset[0] = 0.0f;
pc_block.offset[1] = 0.0f;
pc_block.color[0] = ((color >> 16) & 0xFF) / 255.0f;
pc_block.color[1] = ((color >> 8) & 0xFF) / 255.0f;
pc_block.color[2] = (color & 0xFF) / 255.0f;
draw.SetPushConstants(&pc_block, sizeof(pc_block));
draw.Draw();
}
} // namespace Vulkan