meta: Fix datatype computation in get_temp_image_type()

Changes in the patch will cause datatype to be computed
correctly for 8 and 16 bit integer formats. For example:
GL_RG8I, GL_RG16I etc.

Fixes many failures in gles3 Khronos CTS test:
copy_tex_image_conversions_required
copy_tex_image_conversions_forbidden

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index 64fcd29eb1484d0e9fb615cefe367a28842d40f9..f8f0ee306ff554da89a7b87ad0cca35bf08d3a6d 100644 (file)
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -2745,15 +2745,14 @@ get_temp_image_type(struct gl_context *ctx, mesa_format format)
    case GL_LUMINANCE:
    case GL_LUMINANCE_ALPHA:
    case GL_INTENSITY:
-      if (format_red_bits <= 8) {
+      if (datatype == GL_INT || datatype == GL_UNSIGNED_INT) {
+         return datatype;
+      } else if (format_red_bits <= 8) {
          return GL_UNSIGNED_BYTE;
       } else if (format_red_bits <= 16) {
          return GL_UNSIGNED_SHORT;
-      } else {
-         if (datatype == GL_INT || datatype == GL_UNSIGNED_INT)
-            return datatype;
-         return GL_FLOAT;
       }
+      return GL_FLOAT;
    case GL_DEPTH_COMPONENT:
       if (datatype == GL_FLOAT)
          return GL_FLOAT;