commit 7cf9cd2423b8891953377df41b56505c17b65f02
author Austin Eng <enga@chromium.org> Tue Oct 09 15:27:32 2018 -0700
committer Commit Bot <commit-bot@chromium.org> Fri Oct 26 19:41:23 2018 +0000
tree f221c68652dc3559cc4e88000e7789d2033f41c6
parent e357535f7f45f0afd5d6895d27edb09983c023b5

Add flags to shader translator to emulate gl_DrawID

Adds support for translating gl_DrawID for implementation of
GL_ANGLE_multi_draw.

Currently the change only supports and allows emulation of the
draw id using a uniform variable named `gl_DrawID`. This uniform is
mapped in the translated shader to a hashed name that does not
use the gl_ namespace

Bug: chromium:890539

Change-Id: I08a246ca911e88e733ccdf22f1ed69dcae948e05
Reviewed-on: https://chromium-review.googlesource.com/c/1271957
Commit-Queue: Austin Eng <enga@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>

src/compiler/translator/ShaderLang.cpp

diff --git a/src/compiler/translator/ShaderLang.cpp b/src/compiler/translator/ShaderLang.cpp
index 62d5d7e..cf59782 100644
--- a/src/compiler/translator/ShaderLang.cpp
+++ b/src/compiler/translator/ShaderLang.cpp
@@ -204,6 +204,7 @@
     resources->EXT_geometry_shader                      = 0;
     resources->OES_texture_storage_multisample_2d_array = 0;
     resources->ANGLE_texture_multisample                = 0;
+    resources->ANGLE_multi_draw                         = 0;
 
     resources->NV_draw_buffers = 0;