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Refactored Graphics to allow Renderer choice at runtime

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Noel Berry
2022-02-09 18:49:47 -08:00
parent ae6a2f12d4
commit f5e8de0b11
20 changed files with 1121 additions and 1099 deletions
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52
README.md
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@ -9,10 +9,10 @@ A small 2D C++ Game Framework, using few dependencies and simple code to mainain
- [SDL2](https://github.com/NoelFB/blah/blob/master/src/internal/platform_sdl2.cpp) can be enabled in CMake with `BLAH_PLATFORM_SDL2` (default)
- [WIN32](https://github.com/NoelFB/blah/blob/master/src/internal/platform_win32.cpp) (UNFINISHED) can be enabled in CMake with `BLAH_PLATFORM_WIN32`
- Additional platforms can be added by implementing the [Platform Backend](https://github.com/NoelFB/blah/blob/master/src/internal/platform.h)
- A single *Graphics* implementation must be enabled:
- [OpenGL](https://github.com/NoelFB/blah/blob/master/src/internal/graphics_gl.cpp) can be enabled in CMake with `BLAH_GRAPHICS_OPENGL` (default)
- [D3D11](https://github.com/NoelFB/blah/blob/master/src/internal/graphics_d3d11.cpp) can be enabled in CMake with `BLAH_GRAPHICS_D3D11`
- Additional graphics can be added by implementing the [Graphics Backend](https://github.com/NoelFB/blah/blob/master/src/internal/graphics.h)
- At least one *Renderer* implementation must be enabled:
- [OpenGL](https://github.com/NoelFB/blah/blob/master/src/internal/renderer_gl.cpp) can be enabled in CMake with `BLAH_RENDERER_OPENGL`
- [D3D11](https://github.com/NoelFB/blah/blob/master/src/internal/renderer_d3d11.cpp) can be enabled in CMake with `BLAH_RENDERER_D3D11`
- Additional renderers can be added by implementing the [Renderer Backend](https://github.com/NoelFB/blah/blob/master/src/internal/renderer.h)
#### notes
- There's no Shader abstraction, so the [Sprite Batcher](https://github.com/NoelFB/blah/blob/master/src/graphics/batch.cpp) has hard-coded GLSL/HLSL. This will need to change.
@ -27,39 +27,27 @@ A small 2D C++ Game Framework, using few dependencies and simple code to mainain
using namespace Blah;
Batch batch;
TextureRef tex;
void startup()
{
tex = Texture::create("player.png");
}
void render()
{
App::backbuffer->clear(Color::black);
auto center = Vec2f(App::backbuffer->width(), App::backbuffer->height()) / 2;
auto rotation = Time::seconds * Calc::TAU;
auto transform = Mat3x2f::create_transform(center, Vec2f::zero, Vec2f::one, rotation);
batch.push_matrix(transform);
batch.rect(Rectf(-32, -32, 64, 64), Color::red);
batch.tex(tex, Vec2f(64, 0), Color::white);
batch.pop_matrix();
batch.render();
batch.clear();
}
int main()
{
Config config;
config.name = "blah app";
config.width = 1280;
config.height = 720;
config.on_startup = startup;
config.on_render = render;
config.on_render = []()
{
App::backbuffer()->clear(Color::black);
auto center = App::get_backbuffer_size() / 2;
auto rotation = Time::seconds * Calc::TAU;
auto transform = Mat3x2f::create_transform(center, Vec2f::zero, Vec2f::one, rotation);
batch.push_matrix(transform);
batch.rect(Rectf(-32, -32, 64, 64), Color::red);
batch.pop_matrix();
batch.render();
batch.clear();
};
App::run(&config);
return 0;
}