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-rw-r--r--src/gallium/drivers/softpipe/sp_quad_depth_test.c38
1 files changed, 24 insertions, 14 deletions
diff --git a/src/gallium/drivers/softpipe/sp_quad_depth_test.c b/src/gallium/drivers/softpipe/sp_quad_depth_test.c
index 5854cee1be..17cd5b8207 100644
--- a/src/gallium/drivers/softpipe/sp_quad_depth_test.c
+++ b/src/gallium/drivers/softpipe/sp_quad_depth_test.c
@@ -1,6 +1,7 @@
/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2010 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
@@ -18,7 +19,7 @@
* 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
+ * IN NO EVENT SHALL THE AUTHORS 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.
@@ -26,7 +27,7 @@
**************************************************************************/
/**
- * \brief Quad depth testing
+ * \brief Quad depth / stencil testing
*/
#include "pipe/p_defines.h"
@@ -96,7 +97,9 @@ get_depth_stencil_values( struct depth_data *data,
}
}
-/* If the shader has not been run, interpolate the depth values
+
+/**
+ * If the shader has not been run, interpolate the depth values
* ourselves.
*/
static void
@@ -115,6 +118,9 @@ interpolate_quad_depth( struct quad_header *quad )
}
+/**
+ * Compute the depth_data::qzzzz[] values from the float fragment Z values.
+ */
static void
convert_quad_depth( struct depth_data *data,
const struct quad_header *quad )
@@ -173,6 +179,9 @@ convert_quad_depth( struct depth_data *data,
+/**
+ * Write data->bzzzz[] values and data->stencilVals into the Z/stencil buffer.
+ */
static void
write_depth_stencil_values( struct depth_data *data,
struct quad_header *quad )
@@ -225,7 +234,6 @@ write_depth_stencil_values( struct depth_data *data,
-
/** Only 8-bit stencil supported */
#define STENCIL_MAX 0xff
@@ -408,12 +416,11 @@ apply_stencil_op(struct depth_data *data,
-/*
+/**
* To increase efficiency, we should probably have multiple versions
* of this function that are specifically for Z16, Z32 and FP Z buffers.
* Try to effectively do that with codegen...
*/
-
static boolean
depth_test_quad(struct quad_stage *qs,
struct depth_data *data,
@@ -523,7 +530,6 @@ depth_stencil_test_quad(struct quad_stage *qs,
wrtMask = softpipe->depth_stencil->stencil[face].writemask;
valMask = softpipe->depth_stencil->stencil[face].valuemask;
-
/* do the stencil test first */
{
unsigned passMask, failMask;
@@ -563,7 +569,7 @@ depth_stencil_test_quad(struct quad_stage *qs,
#define ALPHATEST( FUNC, COMP ) \
- static int \
+ static int \
alpha_test_quads_##FUNC( struct quad_stage *qs, \
struct quad_header *quads[], \
unsigned nr ) \
@@ -629,6 +635,7 @@ alpha_test_quads(struct quad_stage *qs,
}
}
+
static unsigned mask_count[16] =
{
0, /* 0x0 */
@@ -665,6 +672,9 @@ get_depth_bits(struct quad_stage *qs)
+/**
+ * General depth/stencil test function. Used when there's no fast-path.
+ */
static void
depth_test_quads_fallback(struct quad_stage *qs,
struct quad_header *quads[],
@@ -712,7 +722,6 @@ depth_test_quads_fallback(struct quad_stage *qs,
write_depth_stencil_values(&data, quads[i]);
}
-
quads[pass++] = quads[i];
}
@@ -848,22 +857,23 @@ choose_depth_test(struct quad_stage *qs,
-
-
-static void depth_test_begin(struct quad_stage *qs)
+static void
+depth_test_begin(struct quad_stage *qs)
{
qs->run = choose_depth_test;
qs->next->begin(qs->next);
}
-static void depth_test_destroy(struct quad_stage *qs)
+static void
+depth_test_destroy(struct quad_stage *qs)
{
FREE( qs );
}
-struct quad_stage *sp_quad_depth_test_stage( struct softpipe_context *softpipe )
+struct quad_stage *
+sp_quad_depth_test_stage(struct softpipe_context *softpipe)
{
struct quad_stage *stage = CALLOC_STRUCT(quad_stage);