diff options
Diffstat (limited to 'src/mesa/pipe/softpipe/sp_quad_depth_test.c')
-rw-r--r-- | src/mesa/pipe/softpipe/sp_quad_depth_test.c | 276 |
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; -} |