mesa: Fix GetTextureImage error reporting, again

Iago Toral Quiroga fixed this in commit 94f740e3fce0cb26e4d90cb9de75b,
but it recently regressed in 0d8826f723cd8868b5271f17f18a1ab4548a1199.
Quoting Iago's original commit message for the fix:

GetTex*Image should return INVALID_ENUM if target is not valid, however,
GetTextureImage does not receive a target, and instead should return
INVALID_OPERATION if the effective target is not valid.  From the
OpenGL 4.6 core profile spec, section 8.11 Texture Queries:

   "An INVALID_OPERATION error is generated by GetTextureImage if the
    effective target is not one of TEXTURE_1D, TEXTURE_2D, TEXTURE_3D,
    TEXTURE_1D_ARRAY, TEXTURE_2D_ARRAY, TEXTURE_CUBE_MAP_ARRAY,
    TEXTURE_RECTANGLE, or TEXTURE_CUBE_MAP (for GetTextureImage only)."

Note that this differs from the original ARB_direct_state_access spec.

However, the EXT_direct_state_access version does take a target
parameter, so it should continue reporting INVALID_ENUM.

Fixes KHR-GL45.direct_state_access.textures_image_query_errors.

Fixes: 0d8826f723c ("mesa: refactor get_texture_image to remove duplicate code")
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

diff --git a/src/mesa/main/texgetimage.c b/src/mesa/main/texgetimage.c
index f9d24e7..fcaaf3e 100644 (file)
--- a/src/mesa/main/texgetimage.c
+++ b/src/mesa/main/texgetimage.c
@@ -1457,10 +1457,6 @@ _get_texture_image(struct gl_context *ctx,
    /* EXT/ARB direct_state_access variants don't call _get_texture_image
     * with a NULL texObj */
    bool is_dsa = texObj != NULL;
-   if (!legal_getteximage_target(ctx, target, is_dsa)) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "%s", caller);
-      return;
-   }
 
    if (!is_dsa) {
       texObj = _mesa_get_current_tex_object(ctx, target);
@@ -1489,6 +1485,11 @@ _mesa_GetnTexImageARB(GLenum target, GLint level, GLenum format, GLenum type,
    GET_CURRENT_CONTEXT(ctx);
    static const char *caller = "glGetnTexImageARB";
 
+   if (!legal_getteximage_target(ctx, target, false)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "%s", caller);
+      return;
+   }
+
    _get_texture_image(ctx, NULL, target, level, format, type,
                       bufSize, pixels, caller);
 }
@@ -1501,6 +1502,11 @@ _mesa_GetTexImage(GLenum target, GLint level, GLenum format, GLenum type,
    GET_CURRENT_CONTEXT(ctx);
    static const char *caller = "glGetTexImage";
 
+   if (!legal_getteximage_target(ctx, target, false)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "%s", caller);
+      return;
+   }
+
    _get_texture_image(ctx, NULL, target, level, format, type,
                       INT_MAX, pixels, caller);
 }
@@ -1519,6 +1525,11 @@ _mesa_GetTextureImage(GLuint texture, GLint level, GLenum format, GLenum type,
       return;
    }
 
+   if (!legal_getteximage_target(ctx, texObj->Target, true)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller);
+      return;
+   }
+
    _get_texture_image(ctx, texObj, texObj->Target, level, format, type,
                       bufSize, pixels, caller);
 }
@@ -1538,6 +1549,11 @@ _mesa_GetTextureImageEXT(GLuint texture, GLenum target, GLint level,
       return;
    }
 
+   if (!legal_getteximage_target(ctx, target, true)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "%s", caller);
+      return;
+   }
+
    _get_texture_image(ctx, texObj, target, level, format, type,
                       INT_MAX, pixels, caller);
 }