rhi: Add get_texture_details, get_renderbuffer_size

src/rhi/gl3_core/gl3_core_rhi.cpp

@@ -844,6 +844,7 @@ rhi::Handle<rhi::Renderbuffer> GlCoreRhi::create_renderbuffer(const rhi::Renderb
 
 	GlCoreRenderbuffer rb;
 	rb.renderbuffer = name;
+	rb.desc = desc;
 	return renderbuffer_slab_.insert(std::move(rb));
 }
 
@@ -1735,6 +1736,33 @@ void GlCoreRhi::read_pixels(Handle<GraphicsContext> ctx, const Rect& rect, Pixel
 	gl_->ReadPixels(rect.x, rect.y, rect.w, rect.h, layout, type, out.data());
 }
 
+TextureDetails GlCoreRhi::get_texture_details(Handle<Texture> texture)
+{
+	SRB2_ASSERT(texture_slab_.is_valid(texture));
+	auto& t = texture_slab_[texture];
+
+	TextureDetails ret {};
+	ret.format = t.desc.format;
+	ret.width = t.desc.width;
+	ret.height = t.desc.height;
+
+	return ret;
+}
+
+Rect GlCoreRhi::get_renderbuffer_size(Handle<Renderbuffer> renderbuffer)
+{
+	SRB2_ASSERT(renderbuffer_slab_.is_valid(renderbuffer));
+	auto& rb = renderbuffer_slab_[renderbuffer];
+
+	Rect ret {};
+	ret.x = 0;
+	ret.y = 0;
+	ret.w = rb.desc.width;
+	ret.h = rb.desc.height;
+
+	return ret;
+}
+
 void GlCoreRhi::finish()
 {
 	SRB2_ASSERT(graphics_context_active_ == false);

src/rhi/gl3_core/gl3_core_rhi.hpp

@@ -94,6 +94,7 @@ struct GlCoreRenderPass : public rhi::RenderPass
 struct GlCoreRenderbuffer : public rhi::Renderbuffer
 {
 	uint32_t renderbuffer;
+	rhi::RenderbufferDesc desc;
 };
 
 struct GlCoreUniformSet : public rhi::UniformSet
@@ -181,6 +182,9 @@ public:
 	virtual Handle<Renderbuffer> create_renderbuffer(const RenderbufferDesc& desc) override;
 	virtual void destroy_renderbuffer(Handle<Renderbuffer> handle) override;
 
+	virtual TextureDetails get_texture_details(Handle<Texture> texture) override;
+	virtual Rect get_renderbuffer_size(Handle<Renderbuffer> renderbuffer) override;
+
 	virtual Handle<TransferContext> begin_transfer() override;
 	virtual void end_transfer(Handle<TransferContext> handle) override;
 

src/rhi/rhi.hpp

@@ -559,6 +559,13 @@ struct GraphicsContext
 {
 };
 
+struct TextureDetails
+{
+	uint32_t width;
+	uint32_t height;
+	TextureFormat format;
+};
+
 /// @brief The unpack alignment of a row span when uploading pixels to the device.
 constexpr const std::size_t kPixelRowUnpackAlignment = 4;
 
@@ -579,6 +586,9 @@ struct Rhi
 	virtual Handle<Renderbuffer> create_renderbuffer(const RenderbufferDesc& desc) = 0;
 	virtual void destroy_renderbuffer(Handle<Renderbuffer> handle) = 0;
 
+	virtual TextureDetails get_texture_details(Handle<Texture> texture) = 0;
+	virtual Rect get_renderbuffer_size(Handle<Renderbuffer> renderbuffer) = 0;
+
 	virtual Handle<TransferContext> begin_transfer() = 0;
 	virtual void end_transfer(Handle<TransferContext> handle) = 0;