Auto merge of #18383 - MortimerGoro:float_textures, r=emilio

Fix WebGL texture_float and texture_half_float detection on some GPUs

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Fix WebGL texture_float and texture_half_float detection on some GPUs. Some of them use different extension names.

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- [x] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).

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components/script/dom/webgl_extensions/ext/oestexturefloat.rs

@@ -32,7 +32,8 @@ impl WebGLExtension for OESTextureFloat {
 
     fn is_supported(ext: &WebGLExtensions) -> bool {
         ext.supports_any_gl_extension(&["GL_OES_texture_float",
-                                        "GL_ARB_texture_float"])
+                                        "GL_ARB_texture_float",
+                                        "GL_EXT_color_buffer_float"])
     }
 
     fn enable(ext: &WebGLExtensions) {

components/script/dom/webgl_extensions/ext/oestexturehalffloat.rs

@@ -33,7 +33,8 @@ impl WebGLExtension for OESTextureHalfFloat {
     fn is_supported(ext: &WebGLExtensions) -> bool {
         ext.supports_any_gl_extension(&["GL_OES_texture_half_float",
                                         "GL_ARB_half_float_pixel",
-                                        "GL_NV_half_float"])
+                                        "GL_NV_half_float",
+                                        "GL_EXT_color_buffer_half_float"])
     }
 
     fn enable(ext: &WebGLExtensions) {