mesa: Make glGetIntegerv(GL_*_ARRAY_SIZE) return GL_BGRA.

Same as b026b6bbfe3f15c8a7296ac107dc3d31f74e401e, but
COLOR_ARRAY_SIZE/SECONDARY_COLOR_ARRAY_SIZE.

Ideally we wouldn't munge the incoming state, so that we wouldn't need
to unmunge it back on glGet*.  But the array size state is copied and
referred in many places, many of which couldn't take an GLenum like
GL_BGRA instead of a plain integer.  So just hack around on glGet*,
to ensure there is no risk of introducing regressions elsewhere.

This bug causes problems to Apitrace, resulting in wrong traces.  See
https://github.com/apitrace/apitrace/issues/261 for details.

Tested with piglit arb_vertex_array_bgra-get, which was created for this
purpose.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: "10.1 10.2" <mesa-stable@lists.freedesktop.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index 80a5839..267b5f2 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -847,6 +847,16 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu
       v->value_int = ctx->Array.VAO->IndexBufferObj->Name;
       break;
 
+   /* ARB_vertex_array_bgra */
+   case GL_COLOR_ARRAY_SIZE:
+      array = &ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_COLOR0];
+      v->value_int = array->Format == GL_BGRA ? GL_BGRA : array->Size;
+      break;
+   case GL_SECONDARY_COLOR_ARRAY_SIZE:
+      array = &ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_COLOR1];
+      v->value_int = array->Format == GL_BGRA ? GL_BGRA : array->Size;
+      break;
+
    /* ARB_copy_buffer */
    case GL_COPY_READ_BUFFER:
       v->value_int = ctx->CopyReadBuffer->Name;