svn merge ^/branches/released .

1 files changed, 160 insertions, 0 deletions

diff --git a/mesalib/src/mesa/state_tracker/st_atom_depth.c b/mesalib/src/mesa/state_tracker/st_atom_depth.c
new file mode 100644
index 000000000..e8e8db41d
--- /dev/null
+++ b/mesalib/src/mesa/state_tracker/st_atom_depth.c
@@ -0,0 +1,160 @@
+/**************************************************************************

+ * 

+ * 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

+  *   Zack  Rusin

+  */

+ 

+

+#include <assert.h>

+

+#include "st_context.h"

+#include "st_atom.h"

+#include "pipe/p_context.h"

+#include "pipe/p_defines.h"

+#include "cso_cache/cso_context.h"

+

+

+/**

+ * Convert an OpenGL compare mode to a pipe tokens.

+ */

+GLuint

+st_compare_func_to_pipe(GLenum func)

+{

+   /* Same values, just biased */

+   assert(PIPE_FUNC_NEVER == GL_NEVER - GL_NEVER);

+   assert(PIPE_FUNC_LESS == GL_LESS - GL_NEVER);

+   assert(PIPE_FUNC_EQUAL == GL_EQUAL - GL_NEVER);

+   assert(PIPE_FUNC_LEQUAL == GL_LEQUAL - GL_NEVER);

+   assert(PIPE_FUNC_GREATER == GL_GREATER - GL_NEVER);

+   assert(PIPE_FUNC_NOTEQUAL == GL_NOTEQUAL - GL_NEVER);

+   assert(PIPE_FUNC_GEQUAL == GL_GEQUAL - GL_NEVER);

+   assert(PIPE_FUNC_ALWAYS == GL_ALWAYS - GL_NEVER);

+   assert(func >= GL_NEVER);

+   assert(func <= GL_ALWAYS);

+   return func - GL_NEVER;

+}

+

+

+/**

+ * Convert GLenum stencil op tokens to pipe tokens.

+ */

+static GLuint

+gl_stencil_op_to_pipe(GLenum func)

+{

+   switch (func) {

+   case GL_KEEP:

+      return PIPE_STENCIL_OP_KEEP;

+   case GL_ZERO:

+      return PIPE_STENCIL_OP_ZERO;

+   case GL_REPLACE:

+      return PIPE_STENCIL_OP_REPLACE;

+   case GL_INCR:

+      return PIPE_STENCIL_OP_INCR;

+   case GL_DECR:

+      return PIPE_STENCIL_OP_DECR;

+   case GL_INCR_WRAP:

+      return PIPE_STENCIL_OP_INCR_WRAP;

+   case GL_DECR_WRAP:

+      return PIPE_STENCIL_OP_DECR_WRAP;

+   case GL_INVERT:

+      return PIPE_STENCIL_OP_INVERT;

+   default:

+      assert("invalid GL token in gl_stencil_op_to_pipe()" == NULL);

+      return 0;

+   }

+}

+

+static void

+update_depth_stencil_alpha(struct st_context *st)

+{

+   struct pipe_depth_stencil_alpha_state *dsa = &st->state.depth_stencil;

+   struct pipe_stencil_ref sr;

+   struct gl_context *ctx = st->ctx;

+

+   memset(dsa, 0, sizeof(*dsa));

+   memset(&sr, 0, sizeof(sr));

+

+   if (ctx->Depth.Test && ctx->DrawBuffer->Visual.depthBits > 0) {

+      dsa->depth.enabled = 1;

+      dsa->depth.writemask = ctx->Depth.Mask;

+      dsa->depth.func = st_compare_func_to_pipe(ctx->Depth.Func);

+   }

+

+   if (ctx->Stencil.Enabled && ctx->DrawBuffer->Visual.stencilBits > 0) {

+      dsa->stencil[0].enabled = 1;

+      dsa->stencil[0].func = st_compare_func_to_pipe(ctx->Stencil.Function[0]);

+      dsa->stencil[0].fail_op = gl_stencil_op_to_pipe(ctx->Stencil.FailFunc[0]);

+      dsa->stencil[0].zfail_op = gl_stencil_op_to_pipe(ctx->Stencil.ZFailFunc[0]);

+      dsa->stencil[0].zpass_op = gl_stencil_op_to_pipe(ctx->Stencil.ZPassFunc[0]);

+      dsa->stencil[0].valuemask = ctx->Stencil.ValueMask[0] & 0xff;

+      dsa->stencil[0].writemask = ctx->Stencil.WriteMask[0] & 0xff;

+      sr.ref_value[0] = ctx->Stencil.Ref[0] & 0xff;

+

+      if (ctx->Stencil._TestTwoSide) {

+         const GLuint back = ctx->Stencil._BackFace;

+         dsa->stencil[1].enabled = 1;

+         dsa->stencil[1].func = st_compare_func_to_pipe(ctx->Stencil.Function[back]);

+         dsa->stencil[1].fail_op = gl_stencil_op_to_pipe(ctx->Stencil.FailFunc[back]);

+         dsa->stencil[1].zfail_op = gl_stencil_op_to_pipe(ctx->Stencil.ZFailFunc[back]);

+         dsa->stencil[1].zpass_op = gl_stencil_op_to_pipe(ctx->Stencil.ZPassFunc[back]);

+         dsa->stencil[1].valuemask = ctx->Stencil.ValueMask[back] & 0xff;

+         dsa->stencil[1].writemask = ctx->Stencil.WriteMask[back] & 0xff;

+         sr.ref_value[1] = ctx->Stencil.Ref[back] & 0xff;

+      }

+      else {

+         /* This should be unnecessary. Drivers must not expect this to

+          * contain valid data, except the enabled bit

+          */

+         dsa->stencil[1] = dsa->stencil[0];

+         dsa->stencil[1].enabled = 0;

+         sr.ref_value[1] = sr.ref_value[0];

+      }

+   }

+

+   if (ctx->Color.AlphaEnabled) {

+      dsa->alpha.enabled = 1;

+      dsa->alpha.func = st_compare_func_to_pipe(ctx->Color.AlphaFunc);

+      dsa->alpha.ref_value = ctx->Color.AlphaRef;

+   }

+

+   cso_set_depth_stencil_alpha(st->cso_context, dsa);

+   cso_set_stencil_ref(st->cso_context, &sr);

+}

+

+

+const struct st_tracked_state st_update_depth_stencil_alpha = {

+   "st_update_depth_stencil",				/* name */

+   {							/* dirty */

+      (_NEW_DEPTH|_NEW_STENCIL|_NEW_COLOR),		/* mesa */

+      0,						/* st */

+   },

+   update_depth_stencil_alpha				/* update */

+};