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Diffstat (limited to 'src/gallium/drivers/svga/svga_pipe_depthstencil.c')
-rw-r--r--src/gallium/drivers/svga/svga_pipe_depthstencil.c153
1 files changed, 153 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_pipe_depthstencil.c b/src/gallium/drivers/svga/svga_pipe_depthstencil.c
new file mode 100644
index 0000000000..df636c08a0
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_pipe_depthstencil.c
@@ -0,0 +1,153 @@
+/**********************************************************
+ * Copyright 2008-2009 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, sublicense, 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 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
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * 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_inlines.h"
+#include "pipe/p_defines.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+#include "svga_context.h"
+#include "svga_state.h"
+#include "svga_hw_reg.h"
+
+
+static INLINE unsigned
+svga_translate_compare_func(unsigned func)
+{
+ switch (func) {
+ case PIPE_FUNC_NEVER: return SVGA3D_CMP_NEVER;
+ case PIPE_FUNC_LESS: return SVGA3D_CMP_LESS;
+ case PIPE_FUNC_LEQUAL: return SVGA3D_CMP_LESSEQUAL;
+ case PIPE_FUNC_GREATER: return SVGA3D_CMP_GREATER;
+ case PIPE_FUNC_GEQUAL: return SVGA3D_CMP_GREATEREQUAL;
+ case PIPE_FUNC_NOTEQUAL: return SVGA3D_CMP_NOTEQUAL;
+ case PIPE_FUNC_EQUAL: return SVGA3D_CMP_EQUAL;
+ case PIPE_FUNC_ALWAYS: return SVGA3D_CMP_ALWAYS;
+ default:
+ assert(0);
+ return SVGA3D_CMP_ALWAYS;
+ }
+}
+
+static INLINE unsigned
+svga_translate_stencil_op(unsigned op)
+{
+ switch (op) {
+ case PIPE_STENCIL_OP_KEEP: return SVGA3D_STENCILOP_KEEP;
+ case PIPE_STENCIL_OP_ZERO: return SVGA3D_STENCILOP_ZERO;
+ case PIPE_STENCIL_OP_REPLACE: return SVGA3D_STENCILOP_REPLACE;
+ case PIPE_STENCIL_OP_INCR: return SVGA3D_STENCILOP_INCR;
+ case PIPE_STENCIL_OP_DECR: return SVGA3D_STENCILOP_DECR;
+ case PIPE_STENCIL_OP_INCR_WRAP: return SVGA3D_STENCILOP_INCRSAT; /* incorrect? */
+ case PIPE_STENCIL_OP_DECR_WRAP: return SVGA3D_STENCILOP_DECRSAT; /* incorrect? */
+ case PIPE_STENCIL_OP_INVERT: return SVGA3D_STENCILOP_INVERT;
+ default:
+ assert(0);
+ return SVGA3D_STENCILOP_KEEP;
+ }
+}
+
+
+static void *
+svga_create_depth_stencil_state(struct pipe_context *pipe,
+ const struct pipe_depth_stencil_alpha_state *templ)
+{
+ struct svga_depth_stencil_state *ds = CALLOC_STRUCT( svga_depth_stencil_state );
+
+ /* Don't try to figure out CW/CCW correspondence with
+ * stencil[0]/[1] at this point. Presumably this can change as
+ * back/front face are modified.
+ */
+ ds->stencil[0].enabled = templ->stencil[0].enabled;
+ if (ds->stencil[0].enabled) {
+ ds->stencil[0].func = svga_translate_compare_func(templ->stencil[0].func);
+ ds->stencil[0].fail = svga_translate_stencil_op(templ->stencil[0].fail_op);
+ ds->stencil[0].zfail = svga_translate_stencil_op(templ->stencil[0].zfail_op);
+ ds->stencil[0].pass = svga_translate_stencil_op(templ->stencil[0].zpass_op);
+
+ /* SVGA3D has one ref/mask/writemask triple shared between front &
+ * back face stencil. We really need two:
+ */
+ ds->stencil_ref = templ->stencil[0].ref_value & 0xff;
+ ds->stencil_mask = templ->stencil[0].valuemask & 0xff;
+ ds->stencil_writemask = templ->stencil[0].writemask & 0xff;
+ }
+
+
+ ds->stencil[1].enabled = templ->stencil[1].enabled;
+ if (templ->stencil[1].enabled) {
+ ds->stencil[1].func = svga_translate_compare_func(templ->stencil[1].func);
+ ds->stencil[1].fail = svga_translate_stencil_op(templ->stencil[1].fail_op);
+ ds->stencil[1].zfail = svga_translate_stencil_op(templ->stencil[1].zfail_op);
+ ds->stencil[1].pass = svga_translate_stencil_op(templ->stencil[1].zpass_op);
+
+ ds->stencil_ref = templ->stencil[1].ref_value & 0xff;
+ ds->stencil_mask = templ->stencil[1].valuemask & 0xff;
+ ds->stencil_writemask = templ->stencil[1].writemask & 0xff;
+ }
+
+
+ ds->zenable = templ->depth.enabled;
+ if (ds->zenable) {
+ ds->zfunc = svga_translate_compare_func(templ->depth.func);
+ ds->zwriteenable = templ->depth.writemask;
+ }
+
+ ds->alphatestenable = templ->alpha.enabled;
+ if (ds->alphatestenable) {
+ ds->alphafunc = svga_translate_compare_func(templ->alpha.func);
+ ds->alpharef = templ->alpha.ref_value;
+ }
+
+ return ds;
+}
+
+static void svga_bind_depth_stencil_state(struct pipe_context *pipe,
+ void *depth_stencil)
+{
+ struct svga_context *svga = svga_context(pipe);
+
+ svga->curr.depth = (const struct svga_depth_stencil_state *)depth_stencil;
+ svga->dirty |= SVGA_NEW_DEPTH_STENCIL;
+}
+
+static void svga_delete_depth_stencil_state(struct pipe_context *pipe,
+ void *depth_stencil)
+{
+ FREE(depth_stencil);
+}
+
+
+
+void svga_init_depth_stencil_functions( struct svga_context *svga )
+{
+ svga->pipe.create_depth_stencil_alpha_state = svga_create_depth_stencil_state;
+ svga->pipe.bind_depth_stencil_alpha_state = svga_bind_depth_stencil_state;
+ svga->pipe.delete_depth_stencil_alpha_state = svga_delete_depth_stencil_state;
+}
+
+
+
+