commit e3939b985c8dc68b815bf9b2cb66e1ba7446fb33
author Minmin Gong <mgong@microsoft.com> Tue Dec 01 15:36:51 2015 -0800
committer Corentin Wallez <cwallez@chromium.org> Fri Feb 05 15:26:51 2016 +0000
tree 31b0e0b923a30f6d2dcc9e3ced7421adb72a9605
parent 7718c05b7966967bb01b28a93b7a677b4b31642a

D3D11: Transcode ETC1 to BC1.

Adds a new extension to allow transcode ETC formats to suitable BC formats.
This commit implements ETC1 to BC1. More formats will be supported soon.

BUG=angleproject:1285

Change-Id: Iacbfbc2248dfe1aebf24b92696249a9404e331cd
Reviewed-on: https://chromium-review.googlesource.com/316511
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

src/libANGLE/validationES2.cpp

diff --git a/src/libANGLE/validationES2.cpp b/src/libANGLE/validationES2.cpp
index f496449..2e5b955 100644
--- a/src/libANGLE/validationES2.cpp
+++ b/src/libANGLE/validationES2.cpp
@@ -195,6 +195,14 @@
                 return false;
             }
             break;
+          case GL_ETC1_RGB8_LOSSY_DECODE_ANGLE:
+              if (!context->getExtensions().lossyETCDecode)
+              {
+                  context->recordError(
+                      Error(GL_INVALID_ENUM, "ANGLE_lossy_etc_decode extension is not supported"));
+                  return false;
+              }
+              break;
           default:
               context->recordError(Error(
                   GL_INVALID_ENUM, "internalformat is not a supported compressed internal format"));
@@ -398,6 +406,21 @@
                 return false;
             }
             break;
+          case GL_ETC1_RGB8_LOSSY_DECODE_ANGLE:
+              if (context->getExtensions().lossyETCDecode)
+              {
+                  context->recordError(
+                      Error(GL_INVALID_OPERATION,
+                            "ETC1_RGB8_LOSSY_DECODE_ANGLE can't work with this type."));
+                  return false;
+              }
+              else
+              {
+                  context->recordError(
+                      Error(GL_INVALID_ENUM, "ANGLE_lossy_etc_decode extension is not supported."));
+                  return false;
+              }
+              break;
           case GL_DEPTH_COMPONENT:
           case GL_DEPTH_STENCIL_OES:
             if (!context->getExtensions().depthTextures)
@@ -564,6 +587,7 @@
           case GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE:
           case GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE:
           case GL_ETC1_RGB8_OES:
+          case GL_ETC1_RGB8_LOSSY_DECODE_ANGLE:
             context->recordError(Error(GL_INVALID_OPERATION));
             return false;
           case GL_DEPTH_COMPONENT:
@@ -716,6 +740,20 @@
                 return false;
             }
             break;
+          case GL_ETC1_RGB8_LOSSY_DECODE_ANGLE:
+              if (context->getExtensions().lossyETCDecode)
+              {
+                  context->recordError(Error(GL_INVALID_OPERATION,
+                                             "ETC1_RGB8_LOSSY_DECODE_ANGLE can't be copied to."));
+                  return false;
+              }
+              else
+              {
+                  context->recordError(
+                      Error(GL_INVALID_ENUM, "ANGLE_lossy_etc_decode extension is not supported."));
+                  return false;
+              }
+              break;
           case GL_DEPTH_COMPONENT:
           case GL_DEPTH_COMPONENT16:
           case GL_DEPTH_COMPONENT32_OES:
@@ -840,6 +878,14 @@
             return false;
         }
         break;
+      case GL_ETC1_RGB8_LOSSY_DECODE_ANGLE:
+          if (!context->getExtensions().lossyETCDecode)
+          {
+              context->recordError(
+                  Error(GL_INVALID_ENUM, "ANGLE_lossy_etc_decode extension is not supported."));
+              return false;
+          }
+          break;
       case GL_RGBA32F_EXT:
       case GL_RGB32F_EXT:
       case GL_ALPHA32F_EXT: