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handle scissor and vsync

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This commit is contained in:
Alessandro Mauri 2025-06-14 15:09:34 +02:00
parent cda2f27a49
commit 0ef2bceeec
2 changed files with 17 additions and 6 deletions
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2
src/main.c3
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@ -61,7 +61,7 @@ fn int main(String[] args)
defer ui.free();
ren::Renderer ren;
ren.init("Ugui Test", 640, 480);
ren.init("Ugui Test", 640, 480, true);
defer ren.free();
ui.input_window_size(640, 480)!!;

21
src/renderer.c3
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@ -51,7 +51,7 @@ struct Texture {
}
// The GPU buffers that contain quad info, the size is determined by MAX_QUAD_BATCH
const int MAX_QUAD_BATCH = 256;
const int MAX_QUAD_BATCH = 2048;
struct QuadBuffer {
sdl::GPUBuffer* vert_buf;
sdl::GPUBuffer* idx_buf;
@ -86,6 +86,8 @@ struct Renderer {
Id sprite_atlas_id;
Id font_atlas_id;
uint scissor_x, scissor_y, scissor_w, scissor_h;
}
// how each vertex is represented in the gpu
@ -121,7 +123,7 @@ struct ViewsizeUniform @align(16) {
const int DEBUG = 1;
const bool CYCLE = true;
fn void Renderer.init(&self, ZString title, uint width, uint height)
fn void Renderer.init(&self, ZString title, uint width, uint height, bool vsync)
{
// set wayland hint automagically
$if DEBUG == 0:
@ -166,7 +168,8 @@ $endif
}
// set swapchain parameters, like vsync
sdl::set_gpu_swapchain_parameters(self.gpu, self.win, GPU_SWAPCHAINCOMPOSITION_SDR, GPU_PRESENTMODE_IMMEDIATE);
GPUPresentMode present_mode = vsync ? GPU_PRESENTMODE_VSYNC : GPU_PRESENTMODE_IMMEDIATE;
sdl::set_gpu_swapchain_parameters(self.gpu, self.win, GPU_SWAPCHAINCOMPOSITION_SDR, present_mode);
//
// initialize the quad buffer
@ -845,9 +848,15 @@ fn void Renderer.render_ugui(&self, CmdQueue* queue)
CmdUpdateAtlas u = cmd.update_atlas;
char[] pixels = u.raw_buffer[..u.width*u.height*u.bpp];
self.update_texture(u.id, pixels, u.width, u.height);
case CMD_SCISSOR: break; // FIXME: ugui sends a scissor event before any rect event, this cannot be done and needs different handling
case CMD_SCISSOR:
ugui::Rect s = cmd.scissor.rect;
self.set_scissor(s.x, s.y, s.w, s.h);
if (s.x == 0 && s.y == 0 && s.w == 0 && s.h == 0) {
self.get_window_size((int*)&s.w, (int*)&s.h);
}
self.scissor_x = s.x;
self.scissor_y = s.y;
self.scissor_w = s.w;
self.scissor_h = s.h;
default: unreachable("unknown command: %s", cmd.type);
}
@ -863,6 +872,7 @@ fn void Renderer.begin_command(&self, Cmd* cmd)
switch (cmd.type) {
case CMD_RECT:
self.start_render_pass("UGUI_PIPELINE_RECT");
self.set_scissor(self.scissor_x, self.scissor_y, self.scissor_w, self.scissor_h);
case CMD_SPRITE:
// TODO: support multiple sprite and font atlases
CmdSprite s = cmd.sprite;
@ -883,6 +893,7 @@ fn void Renderer.begin_command(&self, Cmd* cmd)
}
self.start_render_pass(pipeline);
self.bind_texture(texture);
self.set_scissor(self.scissor_x, self.scissor_y, self.scissor_w, self.scissor_h);
case CMD_UPDATE_ATLAS: break;
case CMD_SCISSOR: break;
default: unreachable("unknown command: %s", cmd.type);