/**************************************************************************
*
* 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
* 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.
**************************************************************************/
/**
- * \brief Quad depth testing
+ * \brief Quad depth / stencil testing
*/
#include "pipe/p_defines.h"
}
break;
case PIPE_FORMAT_Z24X8_UNORM:
- case PIPE_FORMAT_Z24S8_UNORM:
+ case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
for (j = 0; j < QUAD_SIZE; j++) {
int x = quad->input.x0 % TILE_SIZE + (j & 1);
int y = quad->input.y0 % TILE_SIZE + (j >> 1);
data->bzzzz[j] = tile->data.depth32[y][x] & 0xffffff;
data->stencilVals[j] = tile->data.depth32[y][x] >> 24;
}
- break;
+ break;
case PIPE_FORMAT_X8Z24_UNORM:
- case PIPE_FORMAT_S8Z24_UNORM:
+ case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
for (j = 0; j < QUAD_SIZE; j++) {
int x = quad->input.x0 % TILE_SIZE + (j & 1);
int y = quad->input.y0 % TILE_SIZE + (j >> 1);
data->stencilVals[j] = tile->data.depth32[y][x] & 0xff;
}
break;
+ case PIPE_FORMAT_S8_USCALED:
+ for (j = 0; j < QUAD_SIZE; j++) {
+ int x = quad->input.x0 % TILE_SIZE + (j & 1);
+ int y = quad->input.y0 % TILE_SIZE + (j >> 1);
+ data->bzzzz[j] = 0;
+ data->stencilVals[j] = tile->data.stencil8[y][x];
+ }
+ break;
default:
assert(0);
}
}
-/* 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
}
+/**
+ * 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 )
}
break;
case PIPE_FORMAT_Z24X8_UNORM:
- case PIPE_FORMAT_Z24S8_UNORM:
+ case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
{
float scale = (float) ((1 << 24) - 1);
}
break;
case PIPE_FORMAT_X8Z24_UNORM:
- case PIPE_FORMAT_S8Z24_UNORM:
+ case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
{
float scale = (float) ((1 << 24) - 1);
+/**
+ * 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 )
tile->data.depth32[y][x] = data->bzzzz[j];
}
break;
- case PIPE_FORMAT_Z24S8_UNORM:
+ case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
for (j = 0; j < QUAD_SIZE; j++) {
int x = quad->input.x0 % TILE_SIZE + (j & 1);
int y = quad->input.y0 % TILE_SIZE + (j >> 1);
tile->data.depth32[y][x] = (data->stencilVals[j] << 24) | data->bzzzz[j];
}
break;
- case PIPE_FORMAT_S8Z24_UNORM:
+ case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
for (j = 0; j < QUAD_SIZE; j++) {
int x = quad->input.x0 % TILE_SIZE + (j & 1);
int y = quad->input.y0 % TILE_SIZE + (j >> 1);
tile->data.depth32[y][x] = data->bzzzz[j] << 8;
}
break;
+ case PIPE_FORMAT_S8_USCALED:
+ for (j = 0; j < QUAD_SIZE; j++) {
+ int x = quad->input.x0 % TILE_SIZE + (j & 1);
+ int y = quad->input.y0 % TILE_SIZE + (j >> 1);
+ tile->data.stencil8[y][x] = data->stencilVals[j];
+ }
+ break;
+
default:
assert(0);
}
-
/** Only 8-bit stencil supported */
#define STENCIL_MAX 0xff
-/*
+/**
* 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,
face = 0;
}
+ /* 0 = front-face, 1 = back-face */
+ assert(face == 0 || face == 1);
+
/* choose front or back face function, operator, etc */
/* XXX we could do these initializations once per primitive */
func = softpipe->depth_stencil->stencil[face].func;
wrtMask = softpipe->depth_stencil->stencil[face].writemask;
valMask = softpipe->depth_stencil->stencil[face].valuemask;
-
/* do the stencil test first */
{
unsigned passMask, failMask;
#define ALPHATEST( FUNC, COMP ) \
- static int \
+ static int \
alpha_test_quads_##FUNC( struct quad_stage *qs, \
struct quad_header *quads[], \
unsigned nr ) \
}
}
+
static unsigned mask_count[16] =
{
0, /* 0x0 */
-/** helper to get number of Z buffer bits */
-static unsigned
-get_depth_bits(struct quad_stage *qs)
-{
- struct pipe_surface *zsurf = qs->softpipe->framebuffer.zsbuf;
- if (zsurf)
- return util_format_get_component_bits(zsurf->format,
- UTIL_FORMAT_COLORSPACE_ZS, 0);
- else
- return 0;
-}
-
-
-
+/**
+ * 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[],
nr = alpha_test_quads(qs, quads, nr);
}
- if (get_depth_bits(qs) > 0 &&
- (qs->softpipe->depth_stencil->depth.enabled ||
- qs->softpipe->depth_stencil->stencil[0].enabled)) {
+ if (qs->softpipe->depth_stencil->depth.enabled ||
+ qs->softpipe->depth_stencil->stencil[0].enabled) {
data.ps = qs->softpipe->framebuffer.zsbuf;
data.format = data.ps->format;
write_depth_stencil_values(&data, quads[i]);
}
-
quads[pass++] = quads[i];
}
boolean alpha = qs->softpipe->depth_stencil->alpha.enabled;
- boolean depth = (get_depth_bits(qs) > 0 &&
- qs->softpipe->depth_stencil->depth.enabled);
+ boolean depth = qs->softpipe->depth_stencil->depth.enabled;
unsigned depthfunc = qs->softpipe->depth_stencil->depth.func;
-
-
-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);
projects / mesa.git / blobdiff