shader: type pixel outputs of UINT and SINT render targets as integer vectors

Co-authored-by: Ali Almohaya <AliAlmohaya@gmail.com>
Co-authored-by: Mac <me@itsmemac.com>
Co-authored-by: Senaxx <michelbeld@gmail.com>

src/graphics/shader/shader.h

@@ -181,6 +181,9 @@ struct ShaderPixelInputInfo {
 	uint32_t                                       target_shader_mask           = UINT32_MAX;
 	std::array<Prospero::ColorComponentMapping, 8> target_export_mapping        = {};
 	uint8_t                                        target_packed_unorm_mask      = 0;
+	// Exports to UINT and SINT targets, which take integer outputs of the same signedness.
+	uint8_t                                        target_uint_mask             = 0;
+	uint8_t                                        target_sint_mask             = 0;
 	// CB round mode per converted export: zero adds half an LSB, one truncates.
 	uint8_t                                        target_round_mode            = 0;
 	uint32_t                                       scratch_size_dwords          = 0;