[Mesa-dev] [PATCH] main: Fix target checking for CopyTexSubImage*D.

[Laura Ekstrand]

This fixes a dEQP test failure.  In the test,
glCopyTexSubImage2D was called with target = 0 and failed to throw
INVALID ENUM. This failure was caused by _mesa_get_current_tex_object(ctx,
target) being called before the target checking.  To remedy this, target
checking was separated from the main error-checking function and
called prior to _mesa_get_current_tex_object.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89312
---
 src/mesa/main/teximage.c | 62 +++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 54 insertions(+), 8 deletions(-)

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 87231df..475dc54 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -2815,14 +2815,6 @@ copytexsubimage_error_check(struct gl_context *ctx, GLuint dimensions,
       }
    }
 
-   /* check target (proxies not allowed) */
-   if (!legal_texsubimage_target(ctx, dimensions, target, dsa)) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTex%sSubImage%uD(target=%s)",
-                  suffix, dimensions,
-                  _mesa_lookup_enum_by_nr(target));
-      return GL_TRUE;
-   }
-
    /* Check level */
    if (level < 0 || level >= _mesa_max_texture_levels(ctx, target)) {
       _mesa_error(ctx, GL_INVALID_VALUE,
@@ -4090,6 +4082,16 @@ _mesa_CopyTexSubImage1D( GLenum target, GLint level,
    struct gl_texture_object* texObj;
    GET_CURRENT_CONTEXT(ctx);
 
+   /* Check target (proxies not allowed). Target must be checked prior to
+    * calling _mesa_get_current_tex_object.
+    */
+   if (!legal_texsubimage_target(ctx, 1, target, false)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glCopyTexSubImage1D(invalid target %s)",
+                  _mesa_lookup_enum_by_nr(target));
+      return;
+   }
+
    texObj = _mesa_get_current_tex_object(ctx, target);
    if (!texObj)
       return;
@@ -4108,6 +4110,16 @@ _mesa_CopyTexSubImage2D( GLenum target, GLint level,
    struct gl_texture_object* texObj;
    GET_CURRENT_CONTEXT(ctx);
 
+   /* Check target (proxies not allowed). Target must be checked prior to
+    * calling _mesa_get_current_tex_object.
+    */
+   if (!legal_texsubimage_target(ctx, 2, target, false)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glCopyTexSubImage2D(invalid target %s)",
+                  _mesa_lookup_enum_by_nr(target));
+      return;
+   }
+
    texObj = _mesa_get_current_tex_object(ctx, target);
    if (!texObj)
       return;
@@ -4127,6 +4139,16 @@ _mesa_CopyTexSubImage3D( GLenum target, GLint level,
    struct gl_texture_object* texObj;
    GET_CURRENT_CONTEXT(ctx);
 
+   /* Check target (proxies not allowed). Target must be checked prior to
+    * calling _mesa_get_current_tex_object.
+    */
+   if (!legal_texsubimage_target(ctx, 3, target, false)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glCopyTexSubImage3D(invalid target %s)",
+                  _mesa_lookup_enum_by_nr(target));
+      return;
+   }
+
    texObj = _mesa_get_current_tex_object(ctx, target);
    if (!texObj)
       return;
@@ -4147,6 +4169,14 @@ _mesa_CopyTextureSubImage1D(GLuint texture, GLint level,
    if (!texObj)
       return;
 
+   /* Check target (proxies not allowed). */
+   if (!legal_texsubimage_target(ctx, 1, texObj->Target, true)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glCopyTextureSubImage1D(invalid target %s)",
+                  _mesa_lookup_enum_by_nr(texObj->Target));
+      return;
+   }
+
    _mesa_copy_texture_sub_image(ctx, 1, texObj, texObj->Target, level,
                                 xoffset, 0, 0, x, y, width, 1, true);
 }
@@ -4163,6 +4193,14 @@ _mesa_CopyTextureSubImage2D(GLuint texture, GLint level,
    if (!texObj)
       return;
 
+   /* Check target (proxies not allowed). */
+   if (!legal_texsubimage_target(ctx, 2, texObj->Target, true)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glCopyTextureSubImage2D(invalid target %s)",
+                  _mesa_lookup_enum_by_nr(texObj->Target));
+      return;
+   }
+
    _mesa_copy_texture_sub_image(ctx, 2, texObj, texObj->Target, level,
                                 xoffset, yoffset, 0,
                                 x, y, width, height, true);
@@ -4182,6 +4220,14 @@ _mesa_CopyTextureSubImage3D(GLuint texture, GLint level,
    if (!texObj)
       return;
 
+   /* Check target (proxies not allowed). */
+   if (!legal_texsubimage_target(ctx, 3, texObj->Target, true)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glCopyTextureSubImage3D(invalid target %s)",
+                  _mesa_lookup_enum_by_nr(texObj->Target));
+      return;
+   }
+
    _mesa_copy_texture_sub_image(ctx, 3, texObj, texObj->Target, level,
                                 xoffset, yoffset, zoffset,
                                 x, y, width, height, true);
-- 
2.1.0