more texture sampler work

1 files changed, 135 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_atom_sampler.c b/src/mesa/state_tracker/st_atom_sampler.c
new file mode 100644
index 0000000000..1aa9da8484
--- /dev/null
+++ b/src/mesa/state_tracker/st_atom_sampler.c
@@ -0,0 +1,135 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 TUNGSTEN GRAPHICS 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.
+ * 
+ **************************************************************************/
+
+ /*
+  * Authors:
+  *   Keith Whitwell <keith@tungstengraphics.com>
+  *   Brian Paul
+  */
+ 
+
+#include "st_context.h"
+#include "st_atom.h"
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+
+
+/**
+ * Convert GLenum texcoord wrap tokens to pipe tokens.
+ */
+static GLuint
+gl_wrap_to_sp(GLenum wrap)
+{
+   switch (wrap) {
+   case GL_REPEAT:
+      return PIPE_TEX_WRAP_REPEAT;
+   case GL_CLAMP:
+      return PIPE_TEX_WRAP_CLAMP;
+   case GL_CLAMP_TO_EDGE:
+      return PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+   case GL_CLAMP_TO_BORDER:
+      return PIPE_TEX_WRAP_CLAMP_TO_BORDER;
+   case GL_MIRRORED_REPEAT:
+      return PIPE_TEX_WRAP_MIRROR_REPEAT;
+   case GL_MIRROR_CLAMP_EXT:
+      return PIPE_TEX_WRAP_MIRROR_CLAMP;
+   case GL_MIRROR_CLAMP_TO_EDGE_EXT:
+      return PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE;
+   case GL_MIRROR_CLAMP_TO_BORDER_EXT:
+      return PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER;
+   default:
+      abort();
+      return 0;
+   }
+}
+
+
+static GLuint
+gl_filter_to_sp(GLenum filter)
+{
+   switch (filter) {
+   case GL_NEAREST:
+      return PIPE_TEX_FILTER_NEAREST;
+   case GL_LINEAR:
+      return PIPE_TEX_FILTER_LINEAR;
+   case GL_NEAREST_MIPMAP_NEAREST:
+      return PIPE_TEX_FILTER_NEAREST_MIPMAP_NEAREST;
+   case GL_NEAREST_MIPMAP_LINEAR:
+      return PIPE_TEX_FILTER_NEAREST_MIPMAP_LINEAR;
+   case GL_LINEAR_MIPMAP_NEAREST:
+      return PIPE_TEX_FILTER_LINEAR_MIPMAP_NEAREST;
+   case GL_LINEAR_MIPMAP_LINEAR:
+      return PIPE_TEX_FILTER_LINEAR_MIPMAP_LINEAR;
+   default:
+      abort();
+      return 0;
+   }
+}
+
+
+static void 
+update_samplers(struct st_context *st)
+{
+   GLuint u;
+
+   for (u = 0; u < st->ctx->Const.MaxTextureImageUnits; u++) {
+      const struct gl_texture_object *texobj
+         = st->ctx->Texture.Unit[u]._Current;
+      struct pipe_sampler_state sampler;
+
+      memset(&sampler, 0, sizeof(sampler));
+
+      sampler.wrap_s = gl_wrap_to_sp(texobj->WrapS);
+      sampler.wrap_t = gl_wrap_to_sp(texobj->WrapT);
+      sampler.wrap_r = gl_wrap_to_sp(texobj->WrapR);
+
+      sampler.min_filter = gl_filter_to_sp(texobj->MinFilter);
+      sampler.mag_filter = gl_filter_to_sp(texobj->MagFilter);
+
+      /* XXX more sampler state here */
+
+      if (memcmp(&sampler, &st->state.sampler[u], sizeof(sampler)) != 0) {
+         /* state has changed */
+         st->state.sampler[u] = sampler;
+         st->pipe->set_sampler_state(st->pipe, u, &sampler);
+      }
+   }
+}
+
+
+const struct st_tracked_state st_update_sampler = {
+   .dirty = {
+      .mesa = _NEW_TEXTURE,
+      .st  = 0,
+   },
+   .update = update_samplers
+};
+
+
+
+
+