commit 1bf18ce9e2caca7067b4439373f4fb04a5cd7d21
author Austin Eng <enga@chromium.org> Fri Oct 19 15:34:02 2018 -0700
committer Commit Bot <commit-bot@chromium.org> Tue Nov 06 18:04:07 2018 +0000
tree 0fad52812e82d9b6a48c5699caeaa513594395ac
parent bc5834cdadbd5c278c57024c15bbf70d9a224262

Implement GL_ANGLE_multi_draw

This patch adds entrypoints glMultiDrawArraysANGLE,
glMultiDrawElementsANGLE, glMultiDrawArraysInstancedANGLE,
annd glMultiDrawElementsInstancedANGLE

Bug: chromium:890539

Change-Id: Ic9c374c53892460f44ca6e73a253b78473ac2dff
Reviewed-on: https://chromium-review.googlesource.com/c/1282268
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>

src/libANGLE/validationES2.cpp

diff --git a/src/libANGLE/validationES2.cpp b/src/libANGLE/validationES2.cpp
index e754e5d..818bdf8 100644
--- a/src/libANGLE/validationES2.cpp
+++ b/src/libANGLE/validationES2.cpp
@@ -6713,4 +6713,48 @@
     return true;
 }
 
+bool ValidateMultiDrawArraysANGLE(Context *context,
+                                  PrimitiveMode mode,
+                                  const GLint *firsts,
+                                  const GLsizei *counts,
+                                  GLsizei drawcount)
+{
+    if (!context->getExtensions().multiDraw)
+    {
+        ANGLE_VALIDATION_ERR(context, InvalidOperation(), ExtensionNotEnabled);
+        return false;
+    }
+    for (GLsizei drawID = 0; drawID < drawcount; ++drawID)
+    {
+        if (!ValidateDrawArrays(context, mode, firsts[drawID], counts[drawID]))
+        {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool ValidateMultiDrawElementsANGLE(Context *context,
+                                    PrimitiveMode mode,
+                                    const GLsizei *counts,
+                                    GLenum type,
+                                    const GLsizei *offsets,
+                                    GLsizei drawcount)
+{
+    if (!context->getExtensions().multiDraw)
+    {
+        ANGLE_VALIDATION_ERR(context, InvalidOperation(), ExtensionNotEnabled);
+        return false;
+    }
+    for (GLsizei drawID = 0; drawID < drawcount; ++drawID)
+    {
+        const void *indices = reinterpret_cast<void *>(static_cast<long>(offsets[drawID]));
+        if (!ValidateDrawElements(context, mode, counts[drawID], type, indices))
+        {
+            return false;
+        }
+    }
+    return true;
+}
+
 }  // namespace gl