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Only use an upscaled framebuffer if we have to

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This commit is contained in:
Clownacy 2020-09-14 10:36:35 +01:00
parent 53e96486ce
commit 56b96ed432
1 changed files with 20 additions and 11 deletions
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11
src/Backends/Rendering/SDLTexture.cpp
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@ -139,12 +139,15 @@ void RenderBackend_Deinit(void)
}
void RenderBackend_DrawScreen(void)
{
if (upscaled_framebuffer.texture != NULL)
{
if (SDL_SetRenderTarget(renderer, upscaled_framebuffer.texture) < 0)
Backend_PrintError("Couldn't set upscaled framebuffer as the current rendering target: %s", SDL_GetError());
if (SDL_RenderCopy(renderer, framebuffer.texture, NULL, NULL) < 0)
Backend_PrintError("Failed to copy framebuffer texture to upscaled framebuffer: %s", SDL_GetError());
}
if (SDL_SetRenderTarget(renderer, NULL) < 0)
Backend_PrintError("Couldn't set default render target as the current rendering target: %s", SDL_GetError());
@ -154,7 +157,7 @@ void RenderBackend_DrawScreen(void)
SDL_RenderClear(renderer);
if (SDL_RenderCopy(renderer, upscaled_framebuffer.texture, NULL, &upscaled_framebuffer_rect) < 0)
if (SDL_RenderCopy(renderer, upscaled_framebuffer.texture != NULL ? upscaled_framebuffer.texture : framebuffer.texture, NULL, &upscaled_framebuffer_rect) < 0)
Backend_PrintError("Failed to copy upscaled framebuffer texture to default render target: %s", SDL_GetError());
SDL_RenderPresent(renderer);
@ -443,8 +446,13 @@ void RenderBackend_HandleWindowResize(size_t width, size_t height)
upscaled_framebuffer.height = framebuffer.height * upscale_factor;
if (upscaled_framebuffer.texture != NULL)
{
SDL_DestroyTexture(upscaled_framebuffer.texture);
upscaled_framebuffer.texture = NULL;
}
if (upscale_factor != 1)
{
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
upscaled_framebuffer.texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA32, SDL_TEXTUREACCESS_TARGET, upscaled_framebuffer.width, upscaled_framebuffer.height);
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "nearest");
@ -453,6 +461,7 @@ void RenderBackend_HandleWindowResize(size_t width, size_t height)
Backend_PrintError("Couldn't regenerate upscaled framebuffer");
SDL_SetTextureBlendMode(upscaled_framebuffer.texture, SDL_BLENDMODE_NONE);
}
// Create rect that forces 4:3 no matter what size the window is
float window_ratio = (float)width / height;