Finish implementing Canvas Background mode

2 files changed, 30 insertions, 16 deletions

diff --git a/servers/rendering/renderer_rd/effects/copy_effects.cpp b/servers/rendering/renderer_rd/effects/copy_effects.cpp
index 0ab21bc4ef..a05db8c563 100644
--- a/servers/rendering/renderer_rd/effects/copy_effects.cpp
+++ b/servers/rendering/renderer_rd/effects/copy_effects.cpp
@@ -510,16 +510,18 @@ void CopyEffects::copy_to_atlas_fb(RID p_source_rd_texture, RID p_dest_framebuff
 
 	memset(&copy_to_fb.push_constant, 0, sizeof(CopyToFbPushConstant));
 
-	copy_to_fb.push_constant.use_section = true;
+	copy_to_fb.push_constant.flags |= COPY_TO_FB_FLAG_USE_SECTION;
 	copy_to_fb.push_constant.section[0] = p_uv_rect.position.x;
 	copy_to_fb.push_constant.section[1] = p_uv_rect.position.y;
 	copy_to_fb.push_constant.section[2] = p_uv_rect.size.x;
 	copy_to_fb.push_constant.section[3] = p_uv_rect.size.y;
 
 	if (p_flip_y) {
-		copy_to_fb.push_constant.flip_y = true;
+		copy_to_fb.push_constant.flags |= COPY_TO_FB_FLAG_FLIP_Y;
 	}
 
+	copy_to_fb.push_constant.luminance_multiplier = 1.0;
+
 	// setup our uniforms
 	RID default_sampler = material_storage->sampler_rd_get_default(RS::CANVAS_ITEM_TEXTURE_FILTER_LINEAR, RS::CANVAS_ITEM_TEXTURE_REPEAT_DISABLED);
 
@@ -537,28 +539,35 @@ void CopyEffects::copy_to_atlas_fb(RID p_source_rd_texture, RID p_dest_framebuff
 	RD::get_singleton()->draw_list_draw(draw_list, true);
 }
 
-void CopyEffects::copy_to_fb_rect(RID p_source_rd_texture, RID p_dest_framebuffer, const Rect2i &p_rect, bool p_flip_y, bool p_force_luminance, bool p_alpha_to_zero, bool p_srgb, RID p_secondary, bool p_multiview, bool p_alpha_to_one) {
+void CopyEffects::copy_to_fb_rect(RID p_source_rd_texture, RID p_dest_framebuffer, const Rect2i &p_rect, bool p_flip_y, bool p_force_luminance, bool p_alpha_to_zero, bool p_srgb, RID p_secondary, bool p_multiview, bool p_alpha_to_one, bool p_linear) {
 	UniformSetCacheRD *uniform_set_cache = UniformSetCacheRD::get_singleton();
 	ERR_FAIL_NULL(uniform_set_cache);
 	MaterialStorage *material_storage = MaterialStorage::get_singleton();
 	ERR_FAIL_NULL(material_storage);
 
 	memset(&copy_to_fb.push_constant, 0, sizeof(CopyToFbPushConstant));
+	copy_to_fb.push_constant.luminance_multiplier = 1.0;
 
 	if (p_flip_y) {
-		copy_to_fb.push_constant.flip_y = true;
+		copy_to_fb.push_constant.flags |= COPY_TO_FB_FLAG_FLIP_Y;
 	}
 	if (p_force_luminance) {
-		copy_to_fb.push_constant.force_luminance = true;
+		copy_to_fb.push_constant.flags |= COPY_TO_FB_FLAG_FORCE_LUMINANCE;
 	}
 	if (p_alpha_to_zero) {
-		copy_to_fb.push_constant.alpha_to_zero = true;
+		copy_to_fb.push_constant.flags |= COPY_TO_FB_FLAG_ALPHA_TO_ZERO;
 	}
 	if (p_srgb) {
-		copy_to_fb.push_constant.srgb = true;
+		copy_to_fb.push_constant.flags |= COPY_TO_FB_FLAG_SRGB;
 	}
 	if (p_alpha_to_one) {
-		copy_to_fb.push_constant.alpha_to_one = true;
+		copy_to_fb.push_constant.flags |= COPY_TO_FB_FLAG_ALPHA_TO_ONE;
+	}
+	if (p_linear) {
+		// Used for copying to a linear buffer. In the mobile renderer we divide the contents of the linear buffer
+		// to allow for a wider effective range.
+		copy_to_fb.push_constant.flags |= COPY_TO_FB_FLAG_LINEAR;
+		copy_to_fb.push_constant.luminance_multiplier = prefer_raster_effects ? 2.0 : 1.0;
 	}
 
 	// setup our uniforms
diff --git a/servers/rendering/renderer_rd/effects/copy_effects.h b/servers/rendering/renderer_rd/effects/copy_effects.h
index cda4f70730..83f7a51a36 100644
--- a/servers/rendering/renderer_rd/effects/copy_effects.h
+++ b/servers/rendering/renderer_rd/effects/copy_effects.h
@@ -181,16 +181,21 @@ private:
 		COPY_TO_FB_MAX,
 	};
 
+	enum CopyToFBFlags {
+		COPY_TO_FB_FLAG_FLIP_Y = (1 << 0),
+		COPY_TO_FB_FLAG_USE_SECTION = (1 << 1),
+		COPY_TO_FB_FLAG_FORCE_LUMINANCE = (1 << 2),
+		COPY_TO_FB_FLAG_ALPHA_TO_ZERO = (1 << 3),
+		COPY_TO_FB_FLAG_SRGB = (1 << 4),
+		COPY_TO_FB_FLAG_ALPHA_TO_ONE = (1 << 5),
+		COPY_TO_FB_FLAG_LINEAR = (1 << 6),
+	};
+
 	struct CopyToFbPushConstant {
 		float section[4];
 		float pixel_size[2];
-		uint32_t flip_y;
-		uint32_t use_section;
-
-		uint32_t force_luminance;
-		uint32_t alpha_to_zero;
-		uint32_t srgb;
-		uint32_t alpha_to_one;
+		float luminance_multiplier;
+		uint32_t flags;
 
 		float set_color[4];
 	};
@@ -322,7 +327,7 @@ public:
 	void copy_cubemap_to_panorama(RID p_source_cube, RID p_dest_panorama, const Size2i &p_panorama_size, float p_lod, bool p_is_array);
 	void copy_depth_to_rect(RID p_source_rd_texture, RID p_dest_framebuffer, const Rect2i &p_rect, bool p_flip_y = false);
 	void copy_depth_to_rect_and_linearize(RID p_source_rd_texture, RID p_dest_texture, const Rect2i &p_rect, bool p_flip_y, float p_z_near, float p_z_far);
-	void copy_to_fb_rect(RID p_source_rd_texture, RID p_dest_framebuffer, const Rect2i &p_rect, bool p_flip_y = false, bool p_force_luminance = false, bool p_alpha_to_zero = false, bool p_srgb = false, RID p_secondary = RID(), bool p_multiview = false, bool alpha_to_one = false);
+	void copy_to_fb_rect(RID p_source_rd_texture, RID p_dest_framebuffer, const Rect2i &p_rect, bool p_flip_y = false, bool p_force_luminance = false, bool p_alpha_to_zero = false, bool p_srgb = false, RID p_secondary = RID(), bool p_multiview = false, bool alpha_to_one = false, bool p_linear = false);
 	void copy_to_atlas_fb(RID p_source_rd_texture, RID p_dest_framebuffer, const Rect2 &p_uv_rect, RD::DrawListID p_draw_list, bool p_flip_y = false, bool p_panorama = false);
 	void copy_raster(RID p_source_texture, RID p_dest_framebuffer);