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加入离线 sprite 与位图字体转换流程

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Demo 现在通过生成的 C++ 头文件使用测试 sprite 和像素风 bitmap font，避免在运行时解码 PNG/TTF。同步补充资源转换文档，明确源资源、生成脚本和生成头文件需要一起提交，保证后续可追溯和可重新生成。
Constraint: IMX6U 运行时路径应尽量轻量，避免图片/字体解码开销
Constraint: 生成像素沿用当前 framebuffer 的 uint32_t RGBA 格式
Rejected: 运行时加载 PNG/TTF | 会增加解码依赖和运行时成本
Confidence: high
Scope-risk: moderate
Directive: 修改 sprite 或字体时，必须同步提交源资源、转换脚本和生成头文件
Tested: cmake -B build-win .; cmake --build build-win --config Release
Not-tested: 尚未在 IMX6U 真机上验证 ARM framebuffer/SDL 后端
This commit is contained in:
SepComet
2026-06-06 23:55:27 +08:00
parent 3e735e27b0
commit 213fa7e961
17 changed files with 1968 additions and 16 deletions
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src/Apps/Demo/main.cpp
+36
View File
@@ -1,6 +1,7 @@
#include <iostream>
#include <array>
#include <cstdint>
#include <cstdio>
#include "Vector2.h"
#include "Vector3.h"
#include "Vector4.h"
@@ -12,6 +13,8 @@
#include <cstdlib>
#include "Vertex.h"
#include "DrawContext.h"
#include "test_sprite.h"
#include "font_atlas.h"
#include "Display.h"
#ifdef USE_FRAMEBUFFER
@@ -116,6 +119,13 @@ int main(int argc, char *argv[])
Gfx::DrawContext ctx(width, height);
RenderData::BitmapFont font;
font.atlas = RenderData::Image(font_atlas_pixels, font_atlas_width, font_atlas_height);
font.char_w = font_char_w;
font.char_h = font_char_h;
font.columns = font_columns;
font.first_char = font_first_char;
Scene::Camera camera;
camera.transform.position = Math::Vector3(0.0f, 0.0f, 3.0f);
camera.transform.rotation = Math::Vector3(0.0f, 3.1415926535f, 0.0f);
@@ -147,8 +157,15 @@ int main(int argc, char *argv[])
const RenderData::Color clearColor(18, 18, 24, 255);
const RenderData::Color cubeColor(240, 240, 240, 255);
const RenderData::Color fpsColor(0, 255, 80, 255);
const RenderData::Color fpsBg(0, 0, 0, 200);
const float aspectRatio = static_cast<float>(width) / static_cast<float>(height);
int32_t fps = 0;
int32_t frame_count = 0;
uint32_t last_fps_time = 0;
char fps_text[32];
bool isRunning = true;
while (isRunning)
{
@@ -235,6 +252,25 @@ int main(int argc, char *argv[])
}
}
// sprite 测试
RenderData::Image sprite_img(test_sprite_pixels, test_sprite_width, test_sprite_height, 0x00000000);
ctx.draw_sprite(10, 10, sprite_img);
ctx.draw_sprite_ex(30, 10, sprite_img, 0, 0, sprite_img.width, sprite_img.height, 2, false, false);
ctx.draw_sprite_ex(10, 30, sprite_img, 0, 0, sprite_img.width, sprite_img.height, 3, true, false);
// FPS 计数
++frame_count;
const uint32_t now = display->get_time_ms();
if (now - last_fps_time >= 1000)
{
fps = frame_count;
frame_count = 0;
last_fps_time = now;
}
std::snprintf(fps_text, sizeof(fps_text), "FPS: %d", fps);
ctx.draw_text(font, 4, 4, fpsColor, fpsBg, fps_text);
ctx.present(display);
}