+ struct gl_context *ctx = st->ctx;
+ const struct gl_sampler_object *samp;
+ struct gl_texture_object *texObj;
+ struct st_texture_object *stObj;
+ enum pipe_format st_view_format;
+ GLboolean retval;
+
+ samp = _mesa_get_samplerobj(ctx, texUnit);
+
+ texObj = ctx->Texture.Unit[texUnit]._Current;
+
+ if (!texObj) {
+ texObj = _mesa_get_fallback_texture(ctx, TEXTURE_2D_INDEX);
+ samp = &texObj->Sampler;
+ }
+ stObj = st_texture_object(texObj);
+
+ retval = st_finalize_texture(ctx, st->pipe, texObj);
+ if (!retval) {
+ /* out of mem */
+ return GL_FALSE;
+ }
+
+ /* Determine the format of the texture sampler view */
+ st_view_format = stObj->pt->format;
+ {
+ const struct st_texture_image *firstImage =
+ st_texture_image(stObj->base.Image[0][stObj->base.BaseLevel]);
+ const gl_format texFormat = firstImage->base.TexFormat;
+ enum pipe_format firstImageFormat =
+ st_mesa_format_to_pipe_format(texFormat);
+
+ if ((samp->sRGBDecode == GL_SKIP_DECODE_EXT) &&
+ (_mesa_get_format_color_encoding(texFormat) == GL_SRGB)) {
+ /* Don't do sRGB->RGB conversion. Interpret the texture data as
+ * linear values.
+ */
+ const gl_format linearFormat =
+ _mesa_get_srgb_format_linear(texFormat);
+ firstImageFormat = st_mesa_format_to_pipe_format(linearFormat);
+ }
+
+ if (firstImageFormat != stObj->pt->format)
+ st_view_format = firstImageFormat;
+ }
+
+ /* if sampler view has changed dereference it */
+ if (stObj->sampler_view) {
+ if (check_sampler_swizzle(stObj->sampler_view,
+ stObj->base._Swizzle,
+ samp->DepthMode) ||
+ (st_view_format != stObj->sampler_view->format) ||
+ stObj->base.BaseLevel != stObj->sampler_view->u.tex.first_level) {
+ pipe_sampler_view_reference(&stObj->sampler_view, NULL);
+ }
+ }
+
+ *sampler_view = st_get_texture_sampler_view_from_stobj(stObj, pipe,
+ samp,
+ st_view_format);
+ return GL_TRUE;
+}
+
+
+static void
+update_vertex_textures(struct st_context *st)
+{
+ const struct gl_context *ctx = st->ctx;
+ struct gl_vertex_program *vprog = ctx->VertexProgram._Current;