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src/gallium/auxiliary/draw/draw_fs.c

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+/**************************************************************************
+ *
+ * Copyright 2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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 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 VMWARE AND/OR ITS 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.
+ *
+ **************************************************************************/
+
+#include "pipe/p_shader_tokens.h"
+
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "util/u_prim.h"
+
+#include "nir/nir_to_tgsi_info.h"
+
+#include "draw_fs.h"
+#include "draw_private.h"
+#include "draw_context.h"
+
+
+struct draw_fragment_shader *
+draw_create_fragment_shader(struct draw_context *draw,
+                            const struct pipe_shader_state *shader)
+{
+   struct draw_fragment_shader *dfs;
+
+   dfs = CALLOC_STRUCT(draw_fragment_shader);
+   if (dfs) {
+      dfs->base = *shader;
+      if (shader->type == PIPE_SHADER_IR_TGSI)
+         tgsi_scan_shader(shader->tokens, &dfs->info);
+      else
+         nir_tgsi_scan_shader(shader->ir.nir, &dfs->info, true);
+   }
+
+   return dfs;
+}
+
+
+void
+draw_bind_fragment_shader(struct draw_context *draw,
+                          struct draw_fragment_shader *dfs)
+{
+   draw_do_flush(draw, DRAW_FLUSH_STATE_CHANGE);
+
+   draw->fs.fragment_shader = dfs;
+}
+
+
+void
+draw_delete_fragment_shader(struct draw_context *draw,
+                            struct draw_fragment_shader *dfs)
+{
+   FREE(dfs);
+}
+