+ /* Take the current depth/stencil renderbuffer, and make a new one wrapping
+ * it which will be treated as GL_RGBA8 so we can render to it as a color
+ * buffer.
+ */
+ depth_irb = intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_DEPTH);
+ irb = intel_create_renderbuffer(GL_RGBA8);
+ rb = &irb->Base;
+ irb->Base.Width = depth_irb->Base.Width;
+ irb->Base.Height = depth_irb->Base.Height;
+ intel_renderbuffer_set_region(irb, depth_irb->region);
+
+ /* Create a name for our renderbuffer, which lets us use other mesa
+ * rb functions for convenience.
+ */
+ _mesa_GenRenderbuffersEXT(1, &rb_name);
+ irb->Base.RefCount++;
+ _mesa_HashInsert(ctx->Shared->RenderBuffers, rb_name, &irb->Base);
+
+ /* Bind the new renderbuffer to the color attachment point. */
+ _mesa_GenFramebuffersEXT(1, &fb_name);
+ _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb_name);
+ _mesa_FramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
+ GL_COLOR_ATTACHMENT0_EXT,
+ GL_RENDERBUFFER_EXT,
+ rb_name);
+ /* Choose to render to the color attachment. */
+ _mesa_DrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
+
+ _mesa_DepthMask(GL_FALSE);
+ _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE);
+
+ _mesa_ActiveTextureARB(GL_TEXTURE0_ARB);
+ _mesa_Enable(GL_TEXTURE_2D);
+ _mesa_GenTextures(1, &texname);
+ _mesa_BindTexture(GL_TEXTURE_2D, texname);
+ _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ _mesa_TexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+ old_unpack = ctx->Unpack;
+ ctx->Unpack = ctx->DefaultPacking;
+ _mesa_TexImage2D(GL_TEXTURE_2D, 0, GL_INTENSITY, width, height, 0,
+ GL_RED, GL_UNSIGNED_BYTE, stencil_pixels);
+ ctx->Unpack = old_unpack;
+ _mesa_free(stencil_pixels);
+
+ meta_set_passthrough_transform(&intel->meta);
+
+ /* Since we're rendering to the framebuffer as if it was an FBO,
+ * if it's the window system we have to flip the coordinates.
+ */
+ if (rendering_to_fbo) {
+ y1 = y;
+ y2 = y + height * ctx->Pixel.ZoomY;
+ } else {
+ y1 = irb->Base.Height - (y + height * ctx->Pixel.ZoomY);
+ y2 = irb->Base.Height - y;