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3DS - Only call C2D_SceneBegin when we have to

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Looking at Citro2D's source, it has a bunch of overhead
This commit is contained in:
Clownacy 2020-10-14 19:32:21 +01:00
parent 8f87aa108e
commit 196ff6ac2f
1 changed files with 16 additions and 4 deletions
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20
src/Backends/Rendering/3DS.cpp
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@ -73,6 +73,18 @@ static void EnableAlpha(bool enabled)
} }
} }
static void SelectRenderTarget(C3D_RenderTarget *render_target)
{
static C3D_RenderTarget *previous_render_target = NULL;
if (render_target != previous_render_target)
{
previous_render_target = render_target;
C2D_SceneBegin(render_target);
}
}
RenderBackend_Surface* RenderBackend_Init(const char *window_title, size_t screen_width, size_t screen_height, bool fullscreen) RenderBackend_Surface* RenderBackend_Init(const char *window_title, size_t screen_width, size_t screen_height, bool fullscreen)
{ {
C3D_Init(C3D_DEFAULT_CMDBUF_SIZE); C3D_Init(C3D_DEFAULT_CMDBUF_SIZE);
@ -154,7 +166,7 @@ void RenderBackend_DrawScreen(void)
C2D_TargetClear(screen_render_target, 0xFF000000); C2D_TargetClear(screen_render_target, 0xFF000000);
C2D_SceneBegin(screen_render_target); SelectRenderTarget(screen_render_target);
C2D_DrawImageAt(image, (400 - framebuffer_surface->width) / 2, (240 - framebuffer_surface->height) / 2, 0.5f, NULL, 1.0f, 1.0f); C2D_DrawImageAt(image, (400 - framebuffer_surface->width) / 2, (240 - framebuffer_surface->height) / 2, 0.5f, NULL, 1.0f, 1.0f);
@ -322,7 +334,7 @@ void RenderBackend_Blit(RenderBackend_Surface *source_surface, const RenderBacke
image.tex = &source_surface->texture; image.tex = &source_surface->texture;
image.subtex = &subtexture; image.subtex = &subtexture;
C2D_SceneBegin(destination_surface->render_target); SelectRenderTarget(destination_surface->render_target);
C2D_DrawImageAt(image, x, y, 0.5f, NULL, 1.0f, 1.0f); C2D_DrawImageAt(image, x, y, 0.5f, NULL, 1.0f, 1.0f);
} }
@ -337,7 +349,7 @@ void RenderBackend_ColourFill(RenderBackend_Surface *surface, const RenderBacken
frame_started = true; frame_started = true;
} }
C2D_SceneBegin(surface->render_target); SelectRenderTarget(surface->render_target);
C2D_DrawRectSolid(rect->left, rect->top, 0.5f, rect->right - rect->left, rect->bottom - rect->top, C2D_Color32(red, green, blue, red == 0 && green == 0 && blue == 0 ? 0 : 0xFF)); C2D_DrawRectSolid(rect->left, rect->top, 0.5f, rect->right - rect->left, rect->bottom - rect->top, C2D_Color32(red, green, blue, red == 0 && green == 0 && blue == 0 ? 0 : 0xFF));
} }
@ -425,7 +437,7 @@ void RenderBackend_PrepareToDrawGlyphs(RenderBackend_GlyphAtlas *atlas, RenderBa
frame_started = true; frame_started = true;
} }
C2D_SceneBegin(destination_surface->render_target); SelectRenderTarget(destination_surface->render_target);
glyph_atlas = atlas; glyph_atlas = atlas;