[Mesa-dev] [V2 PATCH] meta: Fix the pbo usage in meta for GLES{1, 2} contexts

[Anuj Phogat]

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: Ian Romanick <idr at freedesktop.org>
Cc: "11.1" <mesa-stable at lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 src/mesa/drivers/common/meta_tex_subimage.c | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/src/mesa/drivers/common/meta_tex_subimage.c b/src/mesa/drivers/common/meta_tex_subimage.c
index 4adaad7..4d6f571 100644
--- a/src/mesa/drivers/common/meta_tex_subimage.c
+++ b/src/mesa/drivers/common/meta_tex_subimage.c
@@ -211,20 +211,22 @@ _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));
-
    _mesa_GenFramebuffers(2, fbos);
    _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER, fbos[0]);
    _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, fbos[1]);
@@ -346,15 +348,18 @@ _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)
-- 
2.5.0