Allow WebGLCubeMap to accept renderTarget textures (#27230)

* remove unnecessary check

* simplified example

* revert build files

examples/webgl_loader_texture_hdrjpg.html

@@ -134,9 +134,9 @@
 						resolutions[ 'HDR JPG' ] = hdrJpg.width + 'x' + hdrJpg.height;
 						displayStats( 'HDR JPG' );
 			
-						hdrJpgPMREMRenderTarget = pmremGenerator.fromEquirectangular( hdrJpg.renderTarget.texture );
+						hdrJpgEquirectangularMap = hdrJpg.renderTarget.texture;
+						hdrJpgPMREMRenderTarget = pmremGenerator.fromEquirectangular( hdrJpgEquirectangularMap );
 			
-						hdrJpgEquirectangularMap = hdrJpg.toDataTexture();
 						hdrJpgEquirectangularMap.mapping = THREE.EquirectangularReflectionMapping;
 						hdrJpgEquirectangularMap.minFilter = THREE.LinearFilter;
 						hdrJpgEquirectangularMap.magFilter = THREE.LinearFilter;
@@ -159,9 +159,9 @@
 
 						resolutions[ 'Webp Gain map (separate)' ] = gainMap.width + 'x' + gainMap.height;
 			
-						gainMapPMREMRenderTarget = pmremGenerator.fromEquirectangular( gainMap.renderTarget.texture );
+						gainMapBackground = hdrJpg.renderTarget.texture;
+						gainMapPMREMRenderTarget = pmremGenerator.fromEquirectangular( gainMapBackground );
 
-						gainMapBackground = gainMap.toDataTexture();
 						gainMapBackground.mapping = THREE.EquirectangularReflectionMapping;
 						gainMapBackground.minFilter = THREE.LinearFilter;
 						gainMapBackground.magFilter = THREE.LinearFilter;
@@ -285,11 +285,11 @@
 
 					case 'HDR JPG':
 						pmremRenderTarget = hdrJpgPMREMRenderTarget;
-						equirectangularMap = hdrJpgEquirectangularMap || hdrJpg.renderTarget.texture;
+						equirectangularMap = hdrJpgEquirectangularMap;
 						break;
 					case 'Webp Gain map (separate)':
 						pmremRenderTarget = gainMapPMREMRenderTarget;
-						equirectangularMap = gainMapBackground || gainMap.renderTarget.texture;
+						equirectangularMap = gainMapBackground;
 						break;
 					case 'HDR':
 						pmremRenderTarget = hdrPMREMRenderTarget;
@@ -302,9 +302,6 @@
 
 				if ( newEnvMap && newEnvMap !== torusMesh.material.envMap ) {
 
-					torusMesh.material.envMap = newEnvMap;
-					torusMesh.material.needsUpdate = true;
-
 					planeMesh.material.map = newEnvMap;
 					planeMesh.material.needsUpdate = true;
 
@@ -313,6 +310,7 @@
 				torusMesh.rotation.y += 0.005;
 				planeMesh.visible = params.debug;
 
+				scene.environment = equirectangularMap;
 				scene.background = equirectangularMap;
 				renderer.toneMappingExposure = params.exposure;
 

src/renderers/webgl/WebGLCubeMaps.js

@@ -23,7 +23,7 @@ function WebGLCubeMaps( renderer ) {
 
 	function get( texture ) {
 
-		if ( texture && texture.isTexture && texture.isRenderTargetTexture === false ) {
+		if ( texture && texture.isTexture ) {
 
 			const mapping = texture.mapping;