Optimize disabling ARB_texture_rectangle

In https://crrev.com/c/1991969 I added a new, faster way to disable
ARB_texture_rectangle support in ANGLE's shader translator. This change
starts using it in Chrome, replacing the earlier change introduced in
https://crrev.com/c/1842223

Bug: angleproject:3770
Change-Id: Ica718828581b49efc34230f9f53f28fdec77eb67
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1992548
Commit-Queue: James Darpinian <jdarpinian@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#732221}

gpu/command_buffer/service/gles2_cmd_decoder_passthrough.cc

@@ -1198,6 +1198,14 @@ gpu::ContextResult GLES2DecoderPassthroughImpl::Initialize(
   api()->glGetIntegervFn(GL_SCISSOR_BOX, scissor_);
   ApplySurfaceDrawOffset();
 
+#if defined(OS_MACOSX)
+  // On mac we need the ANGLE_texture_rectangle extension to support IOSurface
+  // backbuffers, but we don't want it exposed to WebGL user shaders. This
+  // disables support for it in the shader compiler.
+  if (feature_info_->IsWebGLContext())
+    api()->glDisableFn(GL_TEXTURE_RECTANGLE_ANGLE);
+#endif
+
   set_initialized();
   return gpu::ContextResult::kSuccess;
 }

gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doers.cc

@@ -8,7 +8,6 @@
 #include "base/metrics/histogram_macros.h"
 #include "base/numerics/ranges.h"
 #include "base/strings/string_number_conversions.h"
-#include "build/build_config.h"
 #include "gpu/command_buffer/common/discardable_handle.h"
 #include "gpu/command_buffer/service/decoder_client.h"
 #include "gpu/command_buffer/service/gl_stream_texture_image.h"
@@ -709,18 +708,7 @@ error::Error GLES2DecoderPassthroughImpl::DoColorMask(GLboolean red,
 }
 
 error::Error GLES2DecoderPassthroughImpl::DoCompileShader(GLuint shader) {
-#if defined(OS_MACOSX)
-  // On mac we need this extension to support IOSurface backbuffers, but we
-  // don't want it exposed to WebGL user shaders. Temporarily disable it during
-  // shader compilation.
-  if (feature_info_->IsWebGLContext())
-    api()->glDisableExtensionANGLEFn("GL_ANGLE_texture_rectangle");
-#endif
   api()->glCompileShaderFn(GetShaderServiceID(shader, resources_));
-#if defined(OS_MACOSX)
-  if (feature_info_->IsWebGLContext())
-    api()->glRequestExtensionANGLEFn("GL_ANGLE_texture_rectangle");
-#endif
   return error::kNoError;
 }
 

ui/gl/gl_bindings.h

@@ -84,6 +84,12 @@
 #define GL_TEXTURE_BINDING_EXTERNAL_OES                  0x8D67
 #define GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES              0x8D68
 
+// GL_ANGLE_texture_rectangle
+#define GL_MAX_RECTANGLE_TEXTURE_SIZE_ANGLE 0x84F8
+#define GL_TEXTURE_RECTANGLE_ANGLE 0x84F5
+#define GL_TEXTURE_BINDING_RECTANGLE_ANGLE 0x84F6
+#define GL_SAMPLER_2D_RECT_ANGLE 0x8B63
+
 // GL_ANGLE_translated_shader_source
 #define GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE         0x93A0