commit 47110bf4b3d38fdfe0af3480e67d72ed5995ef77
author Geoff Lang <geofflang@chromium.org> Wed Apr 20 11:13:22 2016 -0700
committer Commit Bot <commit-bot@chromium.org> Fri Oct 07 14:56:11 2016 +0000
tree 107bfffa8805fac84906ac377a05c8f499b4eceb
parent 55e98210baa5db8fc4124042b7162a776a01c802

Implement CHROMIUM_copy_compressed_texture for D3D11.

BUG=angleproject:1356

Change-Id: Id563997d2921cf558c52a781ae66d8bde58d1f2f
Reviewed-on: https://chromium-review.googlesource.com/339847
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

src/libANGLE/validationES2.cpp

diff --git a/src/libANGLE/validationES2.cpp b/src/libANGLE/validationES2.cpp
index c92ddad..b98f6b4 100644
--- a/src/libANGLE/validationES2.cpp
+++ b/src/libANGLE/validationES2.cpp
@@ -3320,6 +3320,68 @@
     return true;
 }
 
+bool ValidateCompressedCopyTextureCHROMIUM(Context *context, GLuint sourceId, GLuint destId)
+{
+    if (!context->getExtensions().copyCompressedTexture)
+    {
+        context->handleError(Error(GL_INVALID_OPERATION,
+                                   "GL_CHROMIUM_copy_compressed_texture extension not available."));
+        return false;
+    }
+
+    const gl::Texture *source = context->getTexture(sourceId);
+    if (source == nullptr)
+    {
+        context->handleError(
+            Error(GL_INVALID_VALUE, "Source texture is not a valid texture object."));
+        return false;
+    }
+
+    if (source->getTarget() != GL_TEXTURE_2D)
+    {
+        context->handleError(
+            Error(GL_INVALID_VALUE, "Source texture must be of type GL_TEXTURE_2D."));
+        return false;
+    }
+
+    if (source->getWidth(GL_TEXTURE_2D, 0) == 0 || source->getHeight(GL_TEXTURE_2D, 0) == 0)
+    {
+        context->handleError(Error(GL_INVALID_VALUE, "Source texture must level 0 defined."));
+        return false;
+    }
+
+    const gl::Format &sourceFormat = source->getFormat(GL_TEXTURE_2D, 0);
+    if (!sourceFormat.info->compressed)
+    {
+        context->handleError(
+            Error(GL_INVALID_OPERATION, "Source texture must have a compressed internal format."));
+        return false;
+    }
+
+    const gl::Texture *dest = context->getTexture(destId);
+    if (dest == nullptr)
+    {
+        context->handleError(
+            Error(GL_INVALID_VALUE, "Destination texture is not a valid texture object."));
+        return false;
+    }
+
+    if (dest->getTarget() != GL_TEXTURE_2D)
+    {
+        context->handleError(
+            Error(GL_INVALID_VALUE, "Destination texture must be of type GL_TEXTURE_2D."));
+        return false;
+    }
+
+    if (dest->getImmutableFormat())
+    {
+        context->handleError(Error(GL_INVALID_OPERATION, "Destination cannot be immutable."));
+        return false;
+    }
+
+    return true;
+}
+
 bool ValidateCreateShader(Context *context, GLenum type)
 {
     switch (type)