On Sun, Dec 16, 2012 at 9:50 AM, Christoph Bumiller
<e0425...@student.tuwien.ac.at> wrote:
> ---
> src/mesa/state_tracker/st_atom_texture.c | 15 ++++++++++++++-
> src/mesa/state_tracker/st_extensions.c | 6 ++++++
> 2 files changed, 20 insertions(+), 1 deletions(-)
>
> diff --git a/src/mesa/state_tracker/st_atom_texture.c
> b/src/mesa/state_tracker/st_atom_texture.c
> index dba1d82..bd2135f 100644
> --- a/src/mesa/state_tracker/st_atom_texture.c
> +++ b/src/mesa/state_tracker/st_atom_texture.c
> @@ -152,7 +152,20 @@ st_create_texture_sampler_view_from_stobj(struct
> pipe_context *pipe,
> u_sampler_view_default_template(&templ,
> stObj->pt,
> format);
> - templ.u.tex.first_level = stObj->base.BaseLevel;
> +
> + if (stObj->pt->target == PIPE_BUFFER) {
> + unsigned f, n;
> + const struct util_format_description *desc
> + = util_format_description(templ.format);
> +
> + f = (stObj->base.BufferOffset * 8 / desc->block.bits) *
> desc->block.width;
> + n = (stObj->base.BufferSize * 8 / desc->block.bits) *
> desc->block.width;
> +
> + templ.u.buf.first_element = f;
> + templ.u.buf.last_element = f + (n ? (n - 1) : 0);
> + } else {
> + templ.u.tex.first_level = stObj->base.BaseLevel;
> + }
>
> if (swizzle != SWIZZLE_NOOP) {
> templ.swizzle_r = GET_SWZ(swizzle, 0);
> diff --git a/src/mesa/state_tracker/st_extensions.c
> b/src/mesa/state_tracker/st_extensions.c
> index 262cc3d..60db753 100644
> --- a/src/mesa/state_tracker/st_extensions.c
> +++ b/src/mesa/state_tracker/st_extensions.c
> @@ -670,7 +670,13 @@ void st_init_extensions(struct st_context *st)
> ctx->Extensions.ARB_map_buffer_alignment = GL_TRUE;
> }
> if (screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OBJECTS)) {
> + ctx->Const.TextureBufferOffsetAlignment =
> + screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT);
> +
> ctx->Extensions.ARB_texture_buffer_object = GL_TRUE;
> + if (ctx->Const.TextureBufferOffsetAlignment)
> + ctx->Extensions.ARB_texture_buffer_range = GL_TRUE;
> +
> init_format_extensions(st, tbo_rgb32, Elements(tbo_rgb32),
> PIPE_BUFFER, PIPE_BIND_SAMPLER_VIEW);
> }
Reviewed-by: Brian Paul <bri...@vmware.com>
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