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Diffstat (limited to 'src/mesa/state_tracker/st_atom_depth.c')
-rw-r--r--src/mesa/state_tracker/st_atom_depth.c151
1 files changed, 151 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_atom_depth.c b/src/mesa/state_tracker/st_atom_depth.c
new file mode 100644
index 0000000000..0e791ceb20
--- /dev/null
+++ b/src/mesa/state_tracker/st_atom_depth.c
@@ -0,0 +1,151 @@
+/**************************************************************************
+ *
+ * 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 "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;
+
+ memset(dsa, 0, sizeof(*dsa));
+
+ dsa->depth.enabled = st->ctx->Depth.Test;
+ dsa->depth.writemask = st->ctx->Depth.Mask;
+ dsa->depth.func = st_compare_func_to_pipe(st->ctx->Depth.Func);
+
+ if (st->ctx->Query.CurrentOcclusionObject &&
+ st->ctx->Query.CurrentOcclusionObject->Active)
+ dsa->depth.occlusion_count = 1;
+
+ if (st->ctx->Stencil.Enabled && st->ctx->Visual.stencilBits > 0) {
+ dsa->stencil[0].enabled = 1;
+ dsa->stencil[0].func = st_compare_func_to_pipe(st->ctx->Stencil.Function[0]);
+ dsa->stencil[0].fail_op = gl_stencil_op_to_pipe(st->ctx->Stencil.FailFunc[0]);
+ dsa->stencil[0].zfail_op = gl_stencil_op_to_pipe(st->ctx->Stencil.ZFailFunc[0]);
+ dsa->stencil[0].zpass_op = gl_stencil_op_to_pipe(st->ctx->Stencil.ZPassFunc[0]);
+ dsa->stencil[0].ref_value = st->ctx->Stencil.Ref[0] & 0xff;
+ dsa->stencil[0].value_mask = st->ctx->Stencil.ValueMask[0] & 0xff;
+ dsa->stencil[0].write_mask = st->ctx->Stencil.WriteMask[0] & 0xff;
+
+ if (st->ctx->Stencil._TestTwoSide) {
+ dsa->stencil[1].enabled = 1;
+ dsa->stencil[1].func = st_compare_func_to_pipe(st->ctx->Stencil.Function[1]);
+ dsa->stencil[1].fail_op = gl_stencil_op_to_pipe(st->ctx->Stencil.FailFunc[1]);
+ dsa->stencil[1].zfail_op = gl_stencil_op_to_pipe(st->ctx->Stencil.ZFailFunc[1]);
+ dsa->stencil[1].zpass_op = gl_stencil_op_to_pipe(st->ctx->Stencil.ZPassFunc[1]);
+ dsa->stencil[1].ref_value = st->ctx->Stencil.Ref[1] & 0xff;
+ dsa->stencil[1].value_mask = st->ctx->Stencil.ValueMask[1] & 0xff;
+ dsa->stencil[1].write_mask = st->ctx->Stencil.WriteMask[1] & 0xff;
+ }
+ else {
+ dsa->stencil[1] = dsa->stencil[0];
+ dsa->stencil[1].enabled = 0;
+ }
+ }
+
+ if (st->ctx->Color.AlphaEnabled) {
+ dsa->alpha.enabled = 1;
+ dsa->alpha.func = st_compare_func_to_pipe(st->ctx->Color.AlphaFunc);
+ dsa->alpha.ref = st->ctx->Color.AlphaRef;
+ }
+
+ cso_set_depth_stencil_alpha(st->cso_context, dsa);
+}
+
+
+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 */
+};