Mesa (main): mesa: allow TEXTURE_BUFFER target for ARB_texture_buffer_range

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Module: Mesa
Branch: main
Commit: 2000ea7e272be45e2140e0dd5c2ee7cf4675b95c
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2000ea7e272be45e2140e0dd5c2ee7cf4675b95c

Author: Juan A. Suarez Romero <jasuarez at igalia.com>
Date:   Tue Sep 14 09:37:16 2021 +0200

mesa: allow TEXTURE_BUFFER target for ARB_texture_buffer_range

While TEXTURE_BUFFER do not support texture parameters in
ARB_texture_buffer_object specification, it does in
ARB_texture_buffer_range, specifically TEXTURE_BUFFER_OFFSET and
TEXTURE_BUFFER_SIZE.

Signed-off-by: Juan A. Suarez Romero <jasuarez at igalia.com>
Reviewed-by: Ilia Mirkin <imirkin at alum.mit.edu>
Reviewed-by: Iago Toral Quiroga <itoral at igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13409>

---

 src/mesa/main/texparam.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/mesa/main/texparam.c b/src/mesa/main/texparam.c
index 3a3ea8aae94..ffa12134f17 100644
--- a/src/mesa/main/texparam.c
+++ b/src/mesa/main/texparam.c
@@ -1580,9 +1580,13 @@ _mesa_legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target
        *
        * From the OpenGL 3.1 spec:
        * "target may also be TEXTURE_BUFFER, indicating the texture buffer."
+       *
+       * From ARB_texture_buffer_range, GL_TEXTURE is a valid target in
+       * GetTexLevelParameter.
        */
       return (_mesa_is_desktop_gl(ctx) && ctx->Version >= 31) ||
-             _mesa_has_OES_texture_buffer(ctx);
+             _mesa_has_OES_texture_buffer(ctx) ||
+             _mesa_has_ARB_texture_buffer_range(ctx);
    case GL_TEXTURE_CUBE_MAP_ARRAY:
       return _mesa_has_texture_cube_map_array(ctx);
    }