[Mesa-stable] [PATCH 3/3] mesa: Allow GL_DEPTH_COMPONENT and GL_DEPTH_STENCIL combinations in glTexImage{123}D()

[Anuj Phogat]

>From OpenGL 3.3 spec, page 141:
   "Textures with a base internal format of DEPTH_COMPONENT or DEPTH_STENCIL
    require either depth component data or depth/stencil component data.
    Textures with other base internal formats require RGBA component data.
    The error INVALID_OPERATION is generated if one of the base internal
    format and format is DEPTH_COMPONENT or DEPTH_STENCIL, and the other
    is neither of these values."

Fixes Khronos OpenGL CTS test failure: proxy_textures_invalid_size

Cc: <mesa-stable at lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 src/mesa/main/teximage.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 1cd6ade..1192b45 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -2039,6 +2039,8 @@ texture_error_check( struct gl_context *ctx,
                      GLint depth, GLint border )
 {
    GLboolean colorFormat;
+   GLboolean is_format_depth_or_depthstencil;
+   GLboolean is_internalFormat_depth_or_depthstencil;
    GLenum err;
 
    /* Even though there are no color-index textures, we still have to support
@@ -2129,11 +2131,18 @@ texture_error_check( struct gl_context *ctx,
    }
 
    /* make sure internal format and format basically agree */
+   is_internalFormat_depth_or_depthstencil =
+      _mesa_is_depth_format(internalFormat) ||
+      _mesa_is_depthstencil_format(internalFormat);
+
+   is_format_depth_or_depthstencil =
+      _mesa_is_depth_format(format) ||
+      _mesa_is_depthstencil_format(format);
+
    colorFormat = _mesa_is_color_format(format);
    if ((_mesa_is_color_format(internalFormat) && !colorFormat && !indexFormat) ||
-       (_mesa_is_depth_format(internalFormat) != _mesa_is_depth_format(format)) ||
+       (is_internalFormat_depth_or_depthstencil != is_format_depth_or_depthstencil) ||
        (_mesa_is_ycbcr_format(internalFormat) != _mesa_is_ycbcr_format(format)) ||
-       (_mesa_is_depthstencil_format(internalFormat) != _mesa_is_depthstencil_format(format)) ||
        (_mesa_is_dudv_format(internalFormat) != _mesa_is_dudv_format(format))) {
       _mesa_error(ctx, GL_INVALID_OPERATION,
                   "glTexImage%dD(incompatible internalFormat = %s, format = %s)",
-- 
1.8.3.1