st/mesa: begin moving PBO functions into their own file

Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_pbo.c b/src/mesa/state_tracker/st_pbo.c
new file mode 100644
index 00000000000..2e6d2361497
--- /dev/null
+++ b/src/mesa/state_tracker/st_pbo.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2007 VMware, Inc.
+ * Copyright 2016 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file
+ *
+ * Common helper functions for PBO up- and downloads.
+ */
+
+#include "state_tracker/st_context.h"
+#include "state_tracker/st_pbo.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_screen.h"
+#include "cso_cache/cso_context.h"
+
+void
+st_init_pbo_helpers(struct st_context *st)
+{
+   struct pipe_context *pipe = st->pipe;
+   struct pipe_screen *screen = pipe->screen;
+
+   st->pbo_upload.enabled =
+      screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OBJECTS) &&
+      screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT) >= 1 &&
+      screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_INTEGERS);
+   if (!st->pbo_upload.enabled)
+      return;
+
+   st->pbo_upload.rgba_only =
+      screen->get_param(screen, PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY);
+
+   if (screen->get_param(screen, PIPE_CAP_TGSI_INSTANCEID)) {
+      if (screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
+         st->pbo_upload.upload_layers = true;
+      } else if (screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES) >= 3) {
+         st->pbo_upload.upload_layers = true;
+         st->pbo_upload.use_gs = true;
+      }
+   }
+
+   /* Blend state */
+   memset(&st->pbo_upload.blend, 0, sizeof(struct pipe_blend_state));
+   st->pbo_upload.blend.rt[0].colormask = PIPE_MASK_RGBA;
+
+   /* Rasterizer state */
+   memset(&st->pbo_upload.raster, 0, sizeof(struct pipe_rasterizer_state));
+   st->pbo_upload.raster.half_pixel_center = 1;
+}
+
+void
+st_destroy_pbo_helpers(struct st_context *st)
+{
+   if (st->pbo_upload.fs) {
+      cso_delete_fragment_shader(st->cso_context, st->pbo_upload.fs);
+      st->pbo_upload.fs = NULL;
+   }
+
+   if (st->pbo_upload.gs) {
+      cso_delete_geometry_shader(st->cso_context, st->pbo_upload.gs);
+      st->pbo_upload.gs = NULL;
+   }
+
+   if (st->pbo_upload.vs) {
+      cso_delete_vertex_shader(st->cso_context, st->pbo_upload.vs);
+      st->pbo_upload.vs = NULL;
+   }
+}