meta: Fix the pbo usage in meta for GLES{1,2} contexts

OpenGL ES 1.0 doesn't support using GL_STREAM_DRAW and both
ES 1.0 and 2.0 don't support GL_STREAM_READ in glBufferData().
So, handle it correctly by calling the _mesa_meta_begin()
before create_texture_for_pbo().

V2: Remove the changes related to allocate_storage. (Ian)

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

diff --git a/src/mesa/drivers/common/meta_tex_subimage.c b/src/mesa/drivers/common/meta_tex_subimage.c
index 639d323..330289b 100644 (file)
--- a/src/mesa/drivers/common/meta_tex_subimage.c
+++ b/src/mesa/drivers/common/meta_tex_subimage.c
@@ -214,20 +214,22 @@ _mesa_meta_pbo_TexSubImage(struct gl_context *ctx, GLuint dims,
     */
    image_height = packing->ImageHeight == 0 ? height : packing->ImageHeight;
 
+   _mesa_meta_begin(ctx, ~(MESA_META_PIXEL_TRANSFER |
+                           MESA_META_PIXEL_STORE));
+
    pbo_tex_image = create_texture_for_pbo(ctx, create_pbo,
                                           GL_PIXEL_UNPACK_BUFFER,
                                           dims, width, height, depth,
                                           format, type, pixels, packing,
                                           &pbo, &pbo_tex);
-   if (!pbo_tex_image)
+   if (!pbo_tex_image) {
+      _mesa_meta_end(ctx);
       return false;
+   }
 
    if (allocate_storage)
       ctx->Driver.AllocTextureImageBuffer(ctx, tex_image);
 
-   _mesa_meta_begin(ctx, ~(MESA_META_PIXEL_TRANSFER |
-                           MESA_META_PIXEL_STORE));
-
    readFb = ctx->Driver.NewFramebuffer(ctx, 0xDEADBEEF);
    if (readFb == NULL)
       goto fail;
@@ -361,15 +363,18 @@ _mesa_meta_pbo_GetTexSubImage(struct gl_context *ctx, GLuint dims,
     */
    image_height = packing->ImageHeight == 0 ? height : packing->ImageHeight;
 
+   _mesa_meta_begin(ctx, ~(MESA_META_PIXEL_TRANSFER |
+                           MESA_META_PIXEL_STORE));
+
    pbo_tex_image = create_texture_for_pbo(ctx, false, GL_PIXEL_PACK_BUFFER,
                                           dims, width, height, depth,
                                           format, type, pixels, packing,
                                           &pbo, &pbo_tex);
-   if (!pbo_tex_image)
-      return false;
 
-   _mesa_meta_begin(ctx, ~(MESA_META_PIXEL_TRANSFER |
-                           MESA_META_PIXEL_STORE));
+   if (!pbo_tex_image) {
+      _mesa_meta_end(ctx);
+      return false;
+   }
 
    /* GL_CLAMP_FRAGMENT_COLOR doesn't affect ReadPixels and GettexImage */
    if (ctx->Extensions.ARB_color_buffer_float)