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-rw-r--r--src/mesa/pipe/softpipe/sp_quad_depth_test.c276
1 files changed, 0 insertions, 276 deletions
diff --git a/src/mesa/pipe/softpipe/sp_quad_depth_test.c b/src/mesa/pipe/softpipe/sp_quad_depth_test.c
deleted file mode 100644
index a9a0754f27..0000000000
--- a/src/mesa/pipe/softpipe/sp_quad_depth_test.c
+++ /dev/null
@@ -1,276 +0,0 @@
-/**************************************************************************
- *
- * 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.
- *
- **************************************************************************/
-
-/**
- * \brief Quad depth testing
- */
-
-#include "pipe/p_defines.h"
-#include "pipe/p_util.h"
-#include "sp_context.h"
-#include "sp_headers.h"
-#include "sp_surface.h"
-#include "sp_quad.h"
-#include "sp_tile_cache.h"
-
-
-/**
- * Do depth testing for a quad.
- * Not static since it's used by the stencil code.
- */
-
-/*
- * 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...
- */
-
-void
-sp_depth_test_quad(struct quad_stage *qs, struct quad_header *quad)
-{
- struct softpipe_context *softpipe = qs->softpipe;
- struct pipe_surface *ps = softpipe->framebuffer.zsbuf;
- const enum pipe_format format = ps->format;
- unsigned bzzzz[QUAD_SIZE]; /**< Z values fetched from depth buffer */
- unsigned qzzzz[QUAD_SIZE]; /**< Z values from the quad */
- unsigned zmask = 0;
- unsigned j;
- struct softpipe_cached_tile *tile
- = sp_get_cached_tile(softpipe, softpipe->zsbuf_cache, quad->x0, quad->y0);
-
- assert(ps); /* shouldn't get here if there's no zbuffer */
-
- /*
- * Convert quad's float depth values to int depth values (qzzzz).
- * If the Z buffer stores integer values, we _have_ to do the depth
- * compares with integers (not floats). Otherwise, the float->int->float
- * conversion of Z values (which isn't an identity function) will cause
- * Z-fighting errors.
- *
- * Also, get the zbuffer values (bzzzz) from the cached tile.
- */
- switch (format) {
- case PIPE_FORMAT_Z16_UNORM:
- {
- float scale = 65535.0;
-
- for (j = 0; j < QUAD_SIZE; j++) {
- qzzzz[j] = (unsigned) (quad->outputs.depth[j] * scale);
- }
-
- for (j = 0; j < QUAD_SIZE; j++) {
- int x = quad->x0 % TILE_SIZE + (j & 1);
- int y = quad->y0 % TILE_SIZE + (j >> 1);
- bzzzz[j] = tile->data.depth16[y][x];
- }
- }
- break;
- case PIPE_FORMAT_Z32_UNORM:
- {
- double scale = (double) (uint) ~0UL;
-
- for (j = 0; j < QUAD_SIZE; j++) {
- qzzzz[j] = (unsigned) (quad->outputs.depth[j] * scale);
- }
-
- for (j = 0; j < QUAD_SIZE; j++) {
- int x = quad->x0 % TILE_SIZE + (j & 1);
- int y = quad->y0 % TILE_SIZE + (j >> 1);
- bzzzz[j] = tile->data.depth32[y][x];
- }
- }
- break;
- case PIPE_FORMAT_S8Z24_UNORM:
- {
- float scale = (float) ((1 << 24) - 1);
-
- for (j = 0; j < QUAD_SIZE; j++) {
- qzzzz[j] = (unsigned) (quad->outputs.depth[j] * scale);
- }
-
- for (j = 0; j < QUAD_SIZE; j++) {
- int x = quad->x0 % TILE_SIZE + (j & 1);
- int y = quad->y0 % TILE_SIZE + (j >> 1);
- bzzzz[j] = tile->data.depth32[y][x] & 0xffffff;
- }
- }
- break;
- case PIPE_FORMAT_Z24S8_UNORM:
- {
- float scale = (float) ((1 << 24) - 1);
-
- for (j = 0; j < QUAD_SIZE; j++) {
- qzzzz[j] = (unsigned) (quad->outputs.depth[j] * scale);
- }
-
- for (j = 0; j < QUAD_SIZE; j++) {
- int x = quad->x0 % TILE_SIZE + (j & 1);
- int y = quad->y0 % TILE_SIZE + (j >> 1);
- bzzzz[j] = tile->data.depth32[y][x] >> 8;
- }
- }
- break;
- default:
- assert(0);
- }
-
- switch (softpipe->depth_stencil->depth.func) {
- case PIPE_FUNC_NEVER:
- /* zmask = 0 */
- break;
- case PIPE_FUNC_LESS:
- /* Note this is pretty much a single sse or cell instruction.
- * Like this: quad->mask &= (quad->outputs.depth < zzzz);
- */
- for (j = 0; j < QUAD_SIZE; j++) {
- if (qzzzz[j] < bzzzz[j])
- zmask |= 1 << j;
- }
- break;
- case PIPE_FUNC_EQUAL:
- for (j = 0; j < QUAD_SIZE; j++) {
- if (qzzzz[j] == bzzzz[j])
- zmask |= 1 << j;
- }
- break;
- case PIPE_FUNC_LEQUAL:
- for (j = 0; j < QUAD_SIZE; j++) {
- if (qzzzz[j] <= bzzzz[j])
- zmask |= (1 << j);
- }
- break;
- case PIPE_FUNC_GREATER:
- for (j = 0; j < QUAD_SIZE; j++) {
- if (qzzzz[j] > bzzzz[j])
- zmask |= (1 << j);
- }
- break;
- case PIPE_FUNC_NOTEQUAL:
- for (j = 0; j < QUAD_SIZE; j++) {
- if (qzzzz[j] != bzzzz[j])
- zmask |= (1 << j);
- }
- break;
- case PIPE_FUNC_GEQUAL:
- for (j = 0; j < QUAD_SIZE; j++) {
- if (qzzzz[j] >= bzzzz[j])
- zmask |= (1 << j);
- }
- break;
- case PIPE_FUNC_ALWAYS:
- zmask = MASK_ALL;
- break;
- default:
- abort();
- }
-
- quad->mask &= zmask;
-
- if (softpipe->depth_stencil->depth.writemask) {
-
- /* This is also efficient with sse / spe instructions:
- */
- for (j = 0; j < QUAD_SIZE; j++) {
- if (quad->mask & (1 << j)) {
- bzzzz[j] = qzzzz[j];
- }
- }
-
- /* put updated Z values back into cached tile */
- switch (format) {
- case PIPE_FORMAT_Z16_UNORM:
- for (j = 0; j < QUAD_SIZE; j++) {
- int x = quad->x0 % TILE_SIZE + (j & 1);
- int y = quad->y0 % TILE_SIZE + (j >> 1);
- tile->data.depth16[y][x] = (ushort) bzzzz[j];
- }
- break;
- case PIPE_FORMAT_Z32_UNORM:
- for (j = 0; j < QUAD_SIZE; j++) {
- int x = quad->x0 % TILE_SIZE + (j & 1);
- int y = quad->y0 % TILE_SIZE + (j >> 1);
- tile->data.depth32[y][x] = bzzzz[j];
- }
- break;
- case PIPE_FORMAT_S8Z24_UNORM:
- for (j = 0; j < QUAD_SIZE; j++) {
- int x = quad->x0 % TILE_SIZE + (j & 1);
- int y = quad->y0 % TILE_SIZE + (j >> 1);
- uint s8z24 = tile->data.depth32[y][x];
- s8z24 = (s8z24 & 0xff000000) | bzzzz[j];
- tile->data.depth32[y][x] = s8z24;
- }
- break;
- case PIPE_FORMAT_Z24S8_UNORM:
- for (j = 0; j < QUAD_SIZE; j++) {
- int x = quad->x0 % TILE_SIZE + (j & 1);
- int y = quad->y0 % TILE_SIZE + (j >> 1);
- uint z24s8 = tile->data.depth32[y][x];
- z24s8 = (z24s8 & 0xff) | (bzzzz[j] << 24);
- tile->data.depth32[y][x] = z24s8;
- }
- break;
- default:
- assert(0);
- }
- }
-}
-
-
-static void
-depth_test_quad(struct quad_stage *qs, struct quad_header *quad)
-{
- sp_depth_test_quad(qs, quad);
-
- if (quad->mask)
- qs->next->run(qs->next, quad);
-}
-
-
-static void depth_test_begin(struct quad_stage *qs)
-{
- qs->next->begin(qs->next);
-}
-
-
-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 *stage = CALLOC_STRUCT(quad_stage);
-
- stage->softpipe = softpipe;
- stage->begin = depth_test_begin;
- stage->run = depth_test_quad;
- stage->destroy = depth_test_destroy;
-
- return stage;
-}
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