Merge pull request #65227 from BastiaanOlij/complete_render_target_api

Implementing override functionality for XR

8 files changed, 267 insertions, 59 deletions

diff --git a/servers/rendering/renderer_rd/environment/gi.cpp b/servers/rendering/renderer_rd/environment/gi.cpp
index 0853460861..ee6e5c27f2 100644
--- a/servers/rendering/renderer_rd/environment/gi.cpp
+++ b/servers/rendering/renderer_rd/environment/gi.cpp
@@ -1644,8 +1644,8 @@ void GI::SDFGI::debug_draw(uint32_t p_view_count, const Projection *p_projection
 		RD::get_singleton()->compute_list_end();
 	}
 
-	Size2 rtsize = texture_storage->render_target_get_size(p_render_target);
-	copy_effects->copy_to_fb_rect(p_texture, texture_storage->render_target_get_rd_framebuffer(p_render_target), Rect2(Vector2(), rtsize), true, false, false, false, RID(), p_view_count > 1);
+	Size2i rtsize = texture_storage->render_target_get_size(p_render_target);
+	copy_effects->copy_to_fb_rect(p_texture, texture_storage->render_target_get_rd_framebuffer(p_render_target), Rect2i(Point2i(), rtsize), true, false, false, false, RID(), p_view_count > 1);
 }
 
 void GI::SDFGI::debug_probes(RID p_framebuffer, const uint32_t p_view_count, const Projection *p_camera_with_transforms, bool p_will_continue_color, bool p_will_continue_depth) {
diff --git a/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp b/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
index c1a7818921..cf08949d99 100644
--- a/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
+++ b/servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
@@ -2095,17 +2095,17 @@ void RenderForwardClustered::_render_buffers_debug_draw(Ref<RenderSceneBuffersRD
 	RID render_target = p_render_buffers->get_render_target();
 
 	if (get_debug_draw_mode() == RS::VIEWPORT_DEBUG_DRAW_SSAO && rb_data->ss_effects_data.ssao.ao_final.is_valid()) {
-		Size2 rtsize = texture_storage->render_target_get_size(render_target);
+		Size2i rtsize = texture_storage->render_target_get_size(render_target);
 		copy_effects->copy_to_fb_rect(rb_data->ss_effects_data.ssao.ao_final, texture_storage->render_target_get_rd_framebuffer(render_target), Rect2(Vector2(), rtsize), false, true);
 	}
 
 	if (get_debug_draw_mode() == RS::VIEWPORT_DEBUG_DRAW_SSIL && rb_data->ss_effects_data.ssil.ssil_final.is_valid()) {
-		Size2 rtsize = texture_storage->render_target_get_size(render_target);
+		Size2i rtsize = texture_storage->render_target_get_size(render_target);
 		copy_effects->copy_to_fb_rect(rb_data->ss_effects_data.ssil.ssil_final, texture_storage->render_target_get_rd_framebuffer(render_target), Rect2(Vector2(), rtsize), false, false);
 	}
 
 	if (get_debug_draw_mode() == RS::VIEWPORT_DEBUG_DRAW_GI_BUFFER && p_render_buffers->has_texture(RB_SCOPE_GI, RB_TEX_AMBIENT)) {
-		Size2 rtsize = texture_storage->render_target_get_size(render_target);
+		Size2i rtsize = texture_storage->render_target_get_size(render_target);
 		RID ambient_texture = p_render_buffers->get_texture(RB_SCOPE_GI, RB_TEX_AMBIENT);
 		RID reflection_texture = p_render_buffers->get_texture(RB_SCOPE_GI, RB_TEX_REFLECTION);
 		copy_effects->copy_to_fb_rect(ambient_texture, texture_storage->render_target_get_rd_framebuffer(render_target), Rect2(Vector2(), rtsize), false, false, false, true, reflection_texture, p_render_buffers->get_view_count() > 1);
diff --git a/servers/rendering/renderer_rd/renderer_compositor_rd.cpp b/servers/rendering/renderer_rd/renderer_compositor_rd.cpp
index a50742f91a..dd3f62e509 100644
--- a/servers/rendering/renderer_rd/renderer_compositor_rd.cpp
+++ b/servers/rendering/renderer_rd/renderer_compositor_rd.cpp
@@ -44,13 +44,9 @@ void RendererCompositorRD::blit_render_targets_to_screen(DisplayServer::WindowID
 	}
 
 	for (int i = 0; i < p_amount; i++) {
-		RID texture = texture_storage->render_target_get_texture(p_render_targets[i].render_target);
-		ERR_CONTINUE(texture.is_null());
-		RID rd_texture = texture_storage->texture_get_rd_texture(texture);
+		RID rd_texture = texture_storage->render_target_get_rd_texture(p_render_targets[i].render_target);
 		ERR_CONTINUE(rd_texture.is_null());
 
-		// TODO if keep_3d_linear was set when rendering to this render target we need to add a linear->sRGB conversion in.
-
 		if (!render_target_descriptors.has(rd_texture) || !RD::get_singleton()->uniform_set_is_valid(render_target_descriptors[rd_texture])) {
 			Vector<RD::Uniform> uniforms;
 			RD::Uniform u;
diff --git a/servers/rendering/renderer_rd/renderer_scene_render_rd.cpp b/servers/rendering/renderer_rd/renderer_scene_render_rd.cpp
index acc964b3f3..6157d7d840 100644
--- a/servers/rendering/renderer_rd/renderer_scene_render_rd.cpp
+++ b/servers/rendering/renderer_rd/renderer_scene_render_rd.cpp
@@ -828,7 +828,7 @@ void RendererSceneRenderRD::_render_buffers_debug_draw(Ref<RenderSceneBuffersRD>
 	if (debug_draw == RS::VIEWPORT_DEBUG_DRAW_DIRECTIONAL_SHADOW_ATLAS) {
 		if (RendererRD::LightStorage::get_singleton()->directional_shadow_get_texture().is_valid()) {
 			RID shadow_atlas_texture = RendererRD::LightStorage::get_singleton()->directional_shadow_get_texture();
-			Size2 rtsize = texture_storage->render_target_get_size(render_target);
+			Size2i rtsize = texture_storage->render_target_get_size(render_target);
 
 			copy_effects->copy_to_fb_rect(shadow_atlas_texture, texture_storage->render_target_get_rd_framebuffer(render_target), Rect2i(Vector2(), rtsize / 2), false, true);
 		}
@@ -838,7 +838,7 @@ void RendererSceneRenderRD::_render_buffers_debug_draw(Ref<RenderSceneBuffersRD>
 		RID decal_atlas = RendererRD::TextureStorage::get_singleton()->decal_atlas_get_texture();
 
 		if (decal_atlas.is_valid()) {
-			Size2 rtsize = texture_storage->render_target_get_size(render_target);
+			Size2i rtsize = texture_storage->render_target_get_size(render_target);
 
 			copy_effects->copy_to_fb_rect(decal_atlas, texture_storage->render_target_get_rd_framebuffer(render_target), Rect2i(Vector2(), rtsize / 2), false, false, true);
 		}
@@ -846,7 +846,7 @@ void RendererSceneRenderRD::_render_buffers_debug_draw(Ref<RenderSceneBuffersRD>
 
 	if (debug_draw == RS::VIEWPORT_DEBUG_DRAW_SCENE_LUMINANCE) {
 		if (p_render_buffers->luminance.current.is_valid()) {
-			Size2 rtsize = texture_storage->render_target_get_size(render_target);
+			Size2i rtsize = texture_storage->render_target_get_size(render_target);
 
 			copy_effects->copy_to_fb_rect(p_render_buffers->luminance.current, texture_storage->render_target_get_rd_framebuffer(render_target), Rect2(Vector2(), rtsize / 8), false, true);
 		}
@@ -859,13 +859,13 @@ void RendererSceneRenderRD::_render_buffers_debug_draw(Ref<RenderSceneBuffersRD>
 
 	if (debug_draw == RS::VIEWPORT_DEBUG_DRAW_OCCLUDERS) {
 		if (p_occlusion_buffer.is_valid()) {
-			Size2 rtsize = texture_storage->render_target_get_size(render_target);
+			Size2i rtsize = texture_storage->render_target_get_size(render_target);
 			copy_effects->copy_to_fb_rect(texture_storage->texture_get_rd_texture(p_occlusion_buffer), texture_storage->render_target_get_rd_framebuffer(render_target), Rect2i(Vector2(), rtsize), true, false);
 		}
 	}
 
 	if (debug_draw == RS::VIEWPORT_DEBUG_DRAW_MOTION_VECTORS && _render_buffers_get_velocity_texture(p_render_buffers).is_valid()) {
-		Size2 rtsize = texture_storage->render_target_get_size(render_target);
+		Size2i rtsize = texture_storage->render_target_get_size(render_target);
 		copy_effects->copy_to_fb_rect(_render_buffers_get_velocity_texture(p_render_buffers), texture_storage->render_target_get_rd_framebuffer(render_target), Rect2(Vector2(), rtsize), false, false);
 	}
 }
diff --git a/servers/rendering/renderer_rd/storage_rd/render_scene_buffers_rd.cpp b/servers/rendering/renderer_rd/storage_rd/render_scene_buffers_rd.cpp
index 1b2237b505..0c2092f03e 100644
--- a/servers/rendering/renderer_rd/storage_rd/render_scene_buffers_rd.cpp
+++ b/servers/rendering/renderer_rd/storage_rd/render_scene_buffers_rd.cpp
@@ -178,7 +178,7 @@ void RenderSceneBuffersRD::configure(RID p_render_target, const Size2i p_interna
 
 	// Create our depth buffer
 	{
-		// TODO If we have depth buffer supplied externally, pick this up
+		// TODO Lazy create this in case we've got an external depth buffer
 
 		RD::DataFormat format;
 		uint32_t usage_bits = RD::TEXTURE_USAGE_SAMPLING_BIT;
@@ -490,6 +490,28 @@ Ref<RenderBufferCustomDataRD> RenderSceneBuffersRD::get_custom_data(const String
 	return ret;
 }
 
+// Depth texture
+
+RID RenderSceneBuffersRD::get_depth_texture() {
+	RendererRD::TextureStorage *texture_storage = RendererRD::TextureStorage::get_singleton();
+	RID depth = texture_storage->render_target_get_override_depth(render_target);
+	if (depth.is_valid()) {
+		return depth;
+	} else {
+		return get_texture(RB_SCOPE_BUFFERS, RB_TEX_DEPTH);
+	}
+}
+
+RID RenderSceneBuffersRD::get_depth_texture(const uint32_t p_layer) {
+	RendererRD::TextureStorage *texture_storage = RendererRD::TextureStorage::get_singleton();
+	RID depth_slice = texture_storage->render_target_get_override_depth_slice(render_target, p_layer);
+	if (depth_slice.is_valid()) {
+		return depth_slice;
+	} else {
+		return get_texture_slice(RB_SCOPE_BUFFERS, RB_TEX_DEPTH, p_layer, 0);
+	}
+}
+
 // Velocity texture.
 
 void RenderSceneBuffersRD::ensure_velocity() {
@@ -516,6 +538,20 @@ void RenderSceneBuffersRD::ensure_velocity() {
 	}
 }
 
+bool RenderSceneBuffersRD::has_velocity_buffer(bool p_has_msaa) {
+	if (p_has_msaa) {
+		return has_texture(RB_SCOPE_BUFFERS, RB_TEX_VELOCITY_MSAA);
+	} else {
+		RendererRD::TextureStorage *texture_storage = RendererRD::TextureStorage::get_singleton();
+		RID velocity = texture_storage->render_target_get_override_velocity(render_target);
+		if (velocity.is_valid()) {
+			return true;
+		} else {
+			return has_texture(RB_SCOPE_BUFFERS, RB_TEX_VELOCITY);
+		}
+	}
+}
+
 RID RenderSceneBuffersRD::get_velocity_buffer(bool p_get_msaa) {
 	if (p_get_msaa) {
 		if (!has_texture(RB_SCOPE_BUFFERS, RB_TEX_VELOCITY_MSAA)) {
@@ -524,10 +560,28 @@ RID RenderSceneBuffersRD::get_velocity_buffer(bool p_get_msaa) {
 			return get_texture(RB_SCOPE_BUFFERS, RB_TEX_VELOCITY_MSAA);
 		}
 	} else {
-		if (!has_texture(RB_SCOPE_BUFFERS, RB_TEX_VELOCITY)) {
+		RendererRD::TextureStorage *texture_storage = RendererRD::TextureStorage::get_singleton();
+		RID velocity = texture_storage->render_target_get_override_velocity(render_target);
+		if (velocity.is_valid()) {
+			return velocity;
+		} else if (!has_texture(RB_SCOPE_BUFFERS, RB_TEX_VELOCITY)) {
 			return RID();
 		} else {
 			return get_texture(RB_SCOPE_BUFFERS, RB_TEX_VELOCITY);
 		}
 	}
 }
+
+RID RenderSceneBuffersRD::get_velocity_buffer(bool p_get_msaa, uint32_t p_layer) {
+	if (p_get_msaa) {
+		return get_texture_slice(RB_SCOPE_BUFFERS, RB_TEX_VELOCITY_MSAA, p_layer, 0);
+	} else {
+		RendererRD::TextureStorage *texture_storage = RendererRD::TextureStorage::get_singleton();
+		RID velocity_slice = texture_storage->render_target_get_override_velocity_slice(render_target, p_layer);
+		if (velocity_slice.is_valid()) {
+			return velocity_slice;
+		} else {
+			return get_texture_slice(RB_SCOPE_BUFFERS, RB_TEX_VELOCITY, p_layer, 0);
+		}
+	}
+}
diff --git a/servers/rendering/renderer_rd/storage_rd/render_scene_buffers_rd.h b/servers/rendering/renderer_rd/storage_rd/render_scene_buffers_rd.h
index 169ee2e2b1..6907f69b93 100644
--- a/servers/rendering/renderer_rd/storage_rd/render_scene_buffers_rd.h
+++ b/servers/rendering/renderer_rd/storage_rd/render_scene_buffers_rd.h
@@ -189,12 +189,8 @@ public:
 		return get_texture_slice(RB_SCOPE_BUFFERS, RB_TEX_COLOR, p_layer, 0);
 	}
 
-	_FORCE_INLINE_ RID get_depth_texture() const {
-		return get_texture(RB_SCOPE_BUFFERS, RB_TEX_DEPTH);
-	}
-	_FORCE_INLINE_ RID get_depth_texture(const uint32_t p_layer) {
-		return get_texture_slice(RB_SCOPE_BUFFERS, RB_TEX_DEPTH, p_layer, 0);
-	}
+	RID get_depth_texture();
+	RID get_depth_texture(const uint32_t p_layer);
 
 	// back buffer (color)
 	RID get_back_buffer_texture() const { return has_texture(RB_SCOPE_BUFFERS, RB_TEX_BLUR_0) ? get_texture(RB_SCOPE_BUFFERS, RB_TEX_BLUR_0) : RID(); } // We (re)use our blur texture here.
@@ -202,9 +198,9 @@ public:
 	// Velocity, currently only used by TAA (Clustered) but we'll be using this in other places soon too.
 
 	void ensure_velocity();
-	bool has_velocity_buffer(bool p_has_msaa) { return has_texture(RB_SCOPE_BUFFERS, p_has_msaa ? RB_TEX_VELOCITY_MSAA : RB_TEX_VELOCITY); }
+	bool has_velocity_buffer(bool p_has_msaa);
 	RID get_velocity_buffer(bool p_get_msaa);
-	RID get_velocity_buffer(bool p_get_msaa, uint32_t p_layer) { return get_texture_slice(RB_SCOPE_BUFFERS, p_get_msaa ? RB_TEX_VELOCITY_MSAA : RB_TEX_VELOCITY, p_layer, 0); }
+	RID get_velocity_buffer(bool p_get_msaa, uint32_t p_layer);
 
 	////////////////////////////////////////////////////////////////////////////////////////////////////////////
 	// Everything after this needs to be re-evaluated, this is all old implementation
diff --git a/servers/rendering/renderer_rd/storage_rd/texture_storage.cpp b/servers/rendering/renderer_rd/storage_rd/texture_storage.cpp
index 14e41a0d6b..b3a7e05ff5 100644
--- a/servers/rendering/renderer_rd/storage_rd/texture_storage.cpp
+++ b/servers/rendering/renderer_rd/storage_rd/texture_storage.cpp
@@ -30,6 +30,7 @@
 
 #include "texture_storage.h"
 #include "../effects/copy_effects.h"
+#include "../framebuffer_cache_rd.h"
 #include "material_storage.h"
 #include "servers/rendering/renderer_rd/renderer_scene_render_rd.h"
 
@@ -2359,10 +2360,26 @@ void TextureStorage::update_decal_buffer(const PagedArray<RID> &p_decals, const
 
 /* RENDER TARGET API */
 
+RID TextureStorage::RenderTarget::get_framebuffer() {
+	// Note that if we're using an overridden color buffer, we're likely cycling through a texture chain.
+	// this is where our framebuffer cache comes in clutch..
+
+	if (msaa != RS::VIEWPORT_MSAA_DISABLED) {
+		return FramebufferCacheRD::get_singleton()->get_cache_multiview(view_count, color_multisample, overridden.color.is_valid() ? overridden.color : color);
+	} else {
+		return FramebufferCacheRD::get_singleton()->get_cache_multiview(view_count, overridden.color.is_valid() ? overridden.color : color);
+	}
+}
+
 void TextureStorage::_clear_render_target(RenderTarget *rt) {
-	//free in reverse dependency order
-	if (rt->framebuffer.is_valid()) {
-		RD::get_singleton()->free(rt->framebuffer);
+	// clear overrides, we assume these are freed by the object that created them
+	rt->overridden.color = RID();
+	rt->overridden.depth = RID();
+	rt->overridden.velocity = RID();
+	rt->overridden.cached_slices.clear(); // these are automatically freed when their parent textures are freed so just clear
+
+	// free in reverse dependency order
+	if (rt->framebuffer_uniform_set.is_valid()) {
 		rt->framebuffer_uniform_set = RID(); //chain deleted
 	}
 
@@ -2384,7 +2401,6 @@ void TextureStorage::_clear_render_target(RenderTarget *rt) {
 
 	_render_target_clear_sdf(rt);
 
-	rt->framebuffer = RID();
 	rt->color = RID();
 	rt->color_multisample = RID();
 }
@@ -2432,11 +2448,10 @@ void TextureStorage::_update_render_target(RenderTarget *rt) {
 		}
 	}
 
+	// TODO see if we can lazy create this once we actually use it as we may not need to create this if we have an overridden color buffer...
 	rt->color = RD::get_singleton()->texture_create(rd_color_attachment_format, rd_view);
 	ERR_FAIL_COND(rt->color.is_null());
 
-	Vector<RID> fb_textures;
-
 	if (rt->msaa != RS::VIEWPORT_MSAA_DISABLED) {
 		// Use the texture format of the color attachment for the multisample color attachment.
 		RD::TextureFormat rd_color_multisample_format = rd_color_attachment_format;
@@ -2450,15 +2465,8 @@ void TextureStorage::_update_render_target(RenderTarget *rt) {
 		RD::TextureView rd_view_multisample;
 		rd_color_multisample_format.is_resolve_buffer = false;
 		rt->color_multisample = RD::get_singleton()->texture_create(rd_color_multisample_format, rd_view_multisample);
-		fb_textures.push_back(rt->color_multisample);
 		ERR_FAIL_COND(rt->color_multisample.is_null());
 	}
-	fb_textures.push_back(rt->color);
-	rt->framebuffer = RD::get_singleton()->framebuffer_create(fb_textures, RenderingDevice::INVALID_ID, rt->view_count);
-	if (rt->framebuffer.is_null()) {
-		_clear_render_target(rt);
-		ERR_FAIL_COND(rt->framebuffer.is_null());
-	}
 
 	{ //update texture
 
@@ -2568,6 +2576,11 @@ void TextureStorage::render_target_set_position(RID p_render_target, int p_x, in
 	//unused for this render target
 }
 
+Point2i TextureStorage::render_target_get_position(RID p_render_target) const {
+	//unused for this render target
+	return Point2i();
+}
+
 void TextureStorage::render_target_set_size(RID p_render_target, int p_width, int p_height, uint32_t p_view_count) {
 	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
 	ERR_FAIL_COND(!rt);
@@ -2579,6 +2592,13 @@ void TextureStorage::render_target_set_size(RID p_render_target, int p_width, in
 	}
 }
 
+Size2i TextureStorage::render_target_get_size(RID p_render_target) const {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_COND_V(!rt, Size2i());
+
+	return rt->size;
+}
+
 RID TextureStorage::render_target_get_texture(RID p_render_target) {
 	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
 	ERR_FAIL_COND_V(!rt, RID());
@@ -2586,7 +2606,84 @@ RID TextureStorage::render_target_get_texture(RID p_render_target) {
 	return rt->texture;
 }
 
-void TextureStorage::render_target_set_external_texture(RID p_render_target, unsigned int p_texture_id) {
+void TextureStorage::render_target_set_override_color(RID p_render_target, RID p_texture) {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_COND(!rt);
+
+	rt->overridden.color = p_texture;
+}
+
+RID TextureStorage::render_target_get_override_color(RID p_render_target) const {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_COND_V(!rt, RID());
+
+	return rt->overridden.color;
+}
+
+void TextureStorage::render_target_set_override_depth(RID p_render_target, RID p_texture) {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_COND(!rt);
+
+	rt->overridden.depth = p_texture;
+}
+
+RID TextureStorage::render_target_get_override_depth(RID p_render_target) const {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_COND_V(!rt, RID());
+
+	return rt->overridden.depth;
+}
+
+RID TextureStorage::render_target_get_override_depth_slice(RID p_render_target, const uint32_t p_layer) const {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_COND_V(!rt, RID());
+
+	if (rt->overridden.depth.is_null()) {
+		return RID();
+	} else if (rt->view_count == 1) {
+		return rt->overridden.depth;
+	} else {
+		RenderTarget::RTOverridden::SliceKey key(rt->overridden.depth, p_layer);
+
+		if (!rt->overridden.cached_slices.has(key)) {
+			rt->overridden.cached_slices[key] = RD::get_singleton()->texture_create_shared_from_slice(RD::TextureView(), rt->overridden.depth, p_layer, 0);
+		}
+
+		return rt->overridden.cached_slices[key];
+	}
+}
+
+void TextureStorage::render_target_set_override_velocity(RID p_render_target, RID p_texture) {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_COND(!rt);
+
+	rt->overridden.velocity = p_texture;
+}
+
+RID TextureStorage::render_target_get_override_velocity(RID p_render_target) const {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_COND_V(!rt, RID());
+
+	return rt->overridden.velocity;
+}
+
+RID TextureStorage::render_target_get_override_velocity_slice(RID p_render_target, const uint32_t p_layer) const {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_COND_V(!rt, RID());
+
+	if (rt->overridden.velocity.is_null()) {
+		return RID();
+	} else if (rt->view_count == 1) {
+		return rt->overridden.velocity;
+	} else {
+		RenderTarget::RTOverridden::SliceKey key(rt->overridden.velocity, p_layer);
+
+		if (!rt->overridden.cached_slices.has(key)) {
+			rt->overridden.cached_slices[key] = RD::get_singleton()->texture_create_shared_from_slice(RD::TextureView(), rt->overridden.velocity, p_layer, 0);
+		}
+
+		return rt->overridden.cached_slices[key];
+	}
 }
 
 void TextureStorage::render_target_set_transparent(RID p_render_target, bool p_is_transparent) {
@@ -2596,10 +2693,21 @@ void TextureStorage::render_target_set_transparent(RID p_render_target, bool p_i
 	_update_render_target(rt);
 }
 
+bool TextureStorage::render_target_get_transparent(RID p_render_target) const {
+	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
+	ERR_FAIL_COND_V(!rt, false);
+
+	return rt->is_transparent;
+}
+
 void TextureStorage::render_target_set_direct_to_screen(RID p_render_target, bool p_value) {
 }
 
-bool TextureStorage::render_target_was_used(RID p_render_target) {
+bool TextureStorage::render_target_get_direct_to_screen(RID p_render_target) const {
+	return false;
+}
+
+bool TextureStorage::render_target_was_used(RID p_render_target) const {
 	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
 	ERR_FAIL_COND_V(!rt, false);
 	return rt->was_used;
@@ -2622,25 +2730,29 @@ void TextureStorage::render_target_set_msaa(RID p_render_target, RS::ViewportMSA
 	_update_render_target(rt);
 }
 
-Size2 TextureStorage::render_target_get_size(RID p_render_target) {
+RS::ViewportMSAA TextureStorage::render_target_get_msaa(RID p_render_target) const {
 	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
-	ERR_FAIL_COND_V(!rt, Size2());
+	ERR_FAIL_COND_V(!rt, RS::VIEWPORT_MSAA_DISABLED);
 
-	return rt->size;
+	return rt->msaa;
 }
 
 RID TextureStorage::render_target_get_rd_framebuffer(RID p_render_target) {
 	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
 	ERR_FAIL_COND_V(!rt, RID());
 
-	return rt->framebuffer;
+	return rt->get_framebuffer();
 }
 
 RID TextureStorage::render_target_get_rd_texture(RID p_render_target) {
 	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
 	ERR_FAIL_COND_V(!rt, RID());
 
-	return rt->color;
+	if (rt->overridden.color.is_valid()) {
+		return rt->overridden.color;
+	} else {
+		return rt->color;
+	}
 }
 
 RID TextureStorage::render_target_get_rd_texture_slice(RID p_render_target, uint32_t p_layer) {
@@ -2711,7 +2823,7 @@ void TextureStorage::render_target_do_clear_request(RID p_render_target) {
 	}
 	Vector<Color> clear_colors;
 	clear_colors.push_back(rt->clear_color);
-	RD::get_singleton()->draw_list_begin(rt->framebuffer, RD::INITIAL_ACTION_CLEAR, RD::FINAL_ACTION_READ, RD::INITIAL_ACTION_KEEP, RD::FINAL_ACTION_DISCARD, clear_colors);
+	RD::get_singleton()->draw_list_begin(rt->get_framebuffer(), RD::INITIAL_ACTION_CLEAR, RD::FINAL_ACTION_READ, RD::INITIAL_ACTION_KEEP, RD::FINAL_ACTION_DISCARD, clear_colors);
 	RD::get_singleton()->draw_list_end();
 	rt->clear_requested = false;
 }
@@ -3140,18 +3252,18 @@ void TextureStorage::render_target_set_vrs_mode(RID p_render_target, RS::Viewpor
 	rt->vrs_mode = p_mode;
 }
 
-void TextureStorage::render_target_set_vrs_texture(RID p_render_target, RID p_texture) {
+RS::ViewportVRSMode TextureStorage::render_target_get_vrs_mode(RID p_render_target) const {
 	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
-	ERR_FAIL_COND(!rt);
+	ERR_FAIL_COND_V(!rt, RS::VIEWPORT_VRS_DISABLED);
 
-	rt->vrs_texture = p_texture;
+	return rt->vrs_mode;
 }
 
-RS::ViewportVRSMode TextureStorage::render_target_get_vrs_mode(RID p_render_target) const {
+void TextureStorage::render_target_set_vrs_texture(RID p_render_target, RID p_texture) {
 	RenderTarget *rt = render_target_owner.get_or_null(p_render_target);
-	ERR_FAIL_COND_V(!rt, RS::VIEWPORT_VRS_DISABLED);
+	ERR_FAIL_COND(!rt);
 
-	return rt->vrs_mode;
+	rt->vrs_texture = p_texture;
 }
 
 RID TextureStorage::render_target_get_vrs_texture(RID p_render_target) const {
diff --git a/servers/rendering/renderer_rd/storage_rd/texture_storage.h b/servers/rendering/renderer_rd/storage_rd/texture_storage.h
index 327a21a1fc..00b4e50737 100644
--- a/servers/rendering/renderer_rd/storage_rd/texture_storage.h
+++ b/servers/rendering/renderer_rd/storage_rd/texture_storage.h
@@ -301,7 +301,6 @@ private:
 	struct RenderTarget {
 		Size2i size;
 		uint32_t view_count;
-		RID framebuffer;
 		RID color;
 		Vector<RID> color_slices;
 		RID color_multisample; // Needed when MSAA is enabled.
@@ -339,6 +338,43 @@ private:
 		RS::ViewportVRSMode vrs_mode = RS::VIEWPORT_VRS_DISABLED;
 		RID vrs_texture;
 
+		// overridden textures
+		struct RTOverridden {
+			RID color;
+			RID depth;
+			RID velocity;
+
+			// In a multiview scenario, which is the most likely where we
+			// override our destination textures, we need to obtain slices
+			// for each layer of these textures.
+			// These are likely changing every frame as we loop through
+			// texture chains hence we add a cache to manage these slices.
+			// For this we define a key using the RID of the texture and
+			// the layer for which we create a slice.
+			struct SliceKey {
+				RID rid;
+				uint32_t layer = 0;
+
+				bool operator==(const SliceKey &p_val) const {
+					return (rid == p_val.rid) && (layer == p_val.layer);
+				}
+
+				static uint32_t hash(const SliceKey &p_val) {
+					uint32_t h = hash_one_uint64(p_val.rid.get_id());
+					h = hash_murmur3_one_32(p_val.layer, h);
+					return hash_fmix32(h);
+				}
+
+				SliceKey() {}
+				SliceKey(RID p_rid, uint32_t p_layer) {
+					rid = p_rid;
+					layer = p_layer;
+				}
+			};
+
+			mutable HashMap<SliceKey, RID, SliceKey> cached_slices;
+		} overridden;
+
 		//texture generated for this owner (nor RD).
 		RID texture;
 		bool was_used;
@@ -346,6 +382,8 @@ private:
 		//clear request
 		bool clear_requested;
 		Color clear_color;
+
+		RID get_framebuffer();
 	};
 
 	mutable RID_Owner<RenderTarget> render_target_owner;
@@ -644,14 +682,17 @@ public:
 	virtual void render_target_free(RID p_rid) override;
 
 	virtual void render_target_set_position(RID p_render_target, int p_x, int p_y) override;
+	virtual Point2i render_target_get_position(RID p_render_target) const override;
 	virtual void render_target_set_size(RID p_render_target, int p_width, int p_height, uint32_t p_view_count) override;
-	virtual RID render_target_get_texture(RID p_render_target) override;
-	virtual void render_target_set_external_texture(RID p_render_target, unsigned int p_texture_id) override;
+	virtual Size2i render_target_get_size(RID p_render_target) const override;
 	virtual void render_target_set_transparent(RID p_render_target, bool p_is_transparent) override;
+	virtual bool render_target_get_transparent(RID p_render_target) const override;
 	virtual void render_target_set_direct_to_screen(RID p_render_target, bool p_direct_to_screen) override;
-	virtual bool render_target_was_used(RID p_render_target) override;
+	virtual bool render_target_get_direct_to_screen(RID p_render_target) const override;
+	virtual bool render_target_was_used(RID p_render_target) const override;
 	virtual void render_target_set_as_unused(RID p_render_target) override;
 	virtual void render_target_set_msaa(RID p_render_target, RS::ViewportMSAA p_msaa) override;
+	virtual RS::ViewportMSAA render_target_get_msaa(RID p_render_target) const override;
 
 	void render_target_copy_to_back_buffer(RID p_render_target, const Rect2i &p_region, bool p_gen_mipmaps);
 	void render_target_clear_back_buffer(RID p_render_target, const Rect2i &p_region, const Color &p_color);
@@ -673,12 +714,21 @@ public:
 	bool render_target_is_sdf_enabled(RID p_render_target) const;
 
 	virtual void render_target_set_vrs_mode(RID p_render_target, RS::ViewportVRSMode p_mode) override;
+	virtual RS::ViewportVRSMode render_target_get_vrs_mode(RID p_render_target) const override;
 	virtual void render_target_set_vrs_texture(RID p_render_target, RID p_texture) override;
+	virtual RID render_target_get_vrs_texture(RID p_render_target) const override;
 
-	RS::ViewportVRSMode render_target_get_vrs_mode(RID p_render_target) const;
-	RID render_target_get_vrs_texture(RID p_render_target) const;
+	virtual void render_target_set_override_color(RID p_render_target, RID p_texture) override;
+	virtual RID render_target_get_override_color(RID p_render_target) const override;
+	virtual void render_target_set_override_depth(RID p_render_target, RID p_texture) override;
+	virtual RID render_target_get_override_depth(RID p_render_target) const override;
+	RID render_target_get_override_depth_slice(RID p_render_target, const uint32_t p_layer) const;
+	virtual void render_target_set_override_velocity(RID p_render_target, RID p_texture) override;
+	virtual RID render_target_get_override_velocity(RID p_render_target) const override;
+	RID render_target_get_override_velocity_slice(RID p_render_target, const uint32_t p_layer) const;
+
+	virtual RID render_target_get_texture(RID p_render_target) override;
 
-	Size2 render_target_get_size(RID p_render_target);
 	RID render_target_get_rd_framebuffer(RID p_render_target);
 	RID render_target_get_rd_texture(RID p_render_target);
 	RID render_target_get_rd_texture_slice(RID p_render_target, uint32_t p_layer);