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-rw-r--r--src/gallium/auxiliary/gallivm/lp_bld_depth.c213
1 files changed, 0 insertions, 213 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_depth.c b/src/gallium/auxiliary/gallivm/lp_bld_depth.c
deleted file mode 100644
index f08f8eb6d8..0000000000
--- a/src/gallium/auxiliary/gallivm/lp_bld_depth.c
+++ /dev/null
@@ -1,213 +0,0 @@
-/**************************************************************************
- *
- * Copyright 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, 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 VMWARE 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.
- *
- **************************************************************************/
-
-/**
- * @file
- * Depth/stencil testing to LLVM IR translation.
- *
- * To be done accurately/efficiently the depth/stencil test must be done with
- * the same type/format of the depth/stencil buffer, which implies massaging
- * the incoming depths to fit into place. Using a more straightforward
- * type/format for depth/stencil values internally and only convert when
- * flushing would avoid this, but it would most likely result in depth fighting
- * artifacts.
- *
- * We are free to use a different pixel layout though. Since our basic
- * processing unit is a quad (2x2 pixel block) we store the depth/stencil
- * values tiled, a quad at time. That is, a depth buffer containing
- *
- * Z11 Z12 Z13 Z14 ...
- * Z21 Z22 Z23 Z24 ...
- * Z31 Z32 Z33 Z34 ...
- * Z41 Z42 Z43 Z44 ...
- * ... ... ... ... ...
- *
- * will actually be stored in memory as
- *
- * Z11 Z12 Z21 Z22 Z13 Z14 Z23 Z24 ...
- * Z31 Z32 Z41 Z42 Z33 Z34 Z43 Z44 ...
- * ... ... ... ... ... ... ... ... ...
- *
- * FIXME: Code generate stencil test
- *
- * @author Jose Fonseca <jfonseca@vmware.com>
- */
-
-#include "pipe/p_state.h"
-#include "util/u_format.h"
-
-#include "lp_bld_type.h"
-#include "lp_bld_const.h"
-#include "lp_bld_logic.h"
-#include "lp_bld_flow.h"
-#include "lp_bld_debug.h"
-#include "lp_bld_depth.h"
-
-
-/**
- * Return a type appropriate for depth/stencil testing.
- */
-struct lp_type
-lp_depth_type(const struct util_format_description *format_desc,
- unsigned length)
-{
- struct lp_type type;
- unsigned swizzle;
-
- assert(format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS);
- assert(format_desc->block.width == 1);
- assert(format_desc->block.height == 1);
-
- swizzle = format_desc->swizzle[0];
- assert(swizzle < 4);
-
- memset(&type, 0, sizeof type);
- type.width = format_desc->block.bits;
-
- if(format_desc->channel[swizzle].type == UTIL_FORMAT_TYPE_FLOAT) {
- type.floating = TRUE;
- assert(swizzle == 0);
- assert(format_desc->channel[swizzle].size == format_desc->block.bits);
- }
- else if(format_desc->channel[swizzle].type == UTIL_FORMAT_TYPE_UNSIGNED) {
- assert(format_desc->block.bits <= 32);
- if(format_desc->channel[swizzle].normalized)
- type.norm = TRUE;
- }
- else
- assert(0);
-
- assert(type.width <= length);
- type.length = length / type.width;
-
- return type;
-}
-
-
-/**
- * Depth test.
- */
-void
-lp_build_depth_test(LLVMBuilderRef builder,
- const struct pipe_depth_state *state,
- struct lp_type type,
- const struct util_format_description *format_desc,
- struct lp_build_mask_context *mask,
- LLVMValueRef src,
- LLVMValueRef dst_ptr)
-{
- struct lp_build_context bld;
- unsigned z_swizzle;
- LLVMValueRef dst;
- LLVMValueRef z_bitmask = NULL;
- LLVMValueRef test;
-
- if(!state->enabled)
- return;
-
- assert(format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS);
- assert(format_desc->block.width == 1);
- assert(format_desc->block.height == 1);
-
- z_swizzle = format_desc->swizzle[0];
- if(z_swizzle == UTIL_FORMAT_SWIZZLE_NONE)
- return;
-
- /* Sanity checking */
- assert(z_swizzle < 4);
- assert(format_desc->block.bits == type.width);
- if(type.floating) {
- assert(z_swizzle == 0);
- assert(format_desc->channel[z_swizzle].type == UTIL_FORMAT_TYPE_FLOAT);
- assert(format_desc->channel[z_swizzle].size == format_desc->block.bits);
- }
- else {
- assert(format_desc->channel[z_swizzle].type == UTIL_FORMAT_TYPE_UNSIGNED);
- assert(format_desc->channel[z_swizzle].normalized);
- assert(!type.fixed);
- assert(!type.sign);
- assert(type.norm);
- }
-
- /* Setup build context */
- lp_build_context_init(&bld, builder, type);
-
- dst = LLVMBuildLoad(builder, dst_ptr, "");
-
- lp_build_name(dst, "zsbuf");
-
- /* Align the source depth bits with the destination's, and mask out any
- * stencil or padding bits from both */
- if(format_desc->channel[z_swizzle].size == format_desc->block.bits) {
- assert(z_swizzle == 0);
- /* nothing to do */
- }
- else {
- unsigned padding_left;
- unsigned padding_right;
- unsigned chan;
-
- assert(format_desc->layout == UTIL_FORMAT_LAYOUT_PLAIN);
- assert(format_desc->channel[z_swizzle].type == UTIL_FORMAT_TYPE_UNSIGNED);
- assert(format_desc->channel[z_swizzle].size <= format_desc->block.bits);
- assert(format_desc->channel[z_swizzle].normalized);
-
- padding_right = 0;
- for(chan = 0; chan < z_swizzle; ++chan)
- padding_right += format_desc->channel[chan].size;
- padding_left = format_desc->block.bits -
- (padding_right + format_desc->channel[z_swizzle].size);
-
- if(padding_left || padding_right) {
- const unsigned long long mask_left = ((unsigned long long)1 << (format_desc->block.bits - padding_left)) - 1;
- const unsigned long long mask_right = ((unsigned long long)1 << (padding_right)) - 1;
- z_bitmask = lp_build_int_const_scalar(type, mask_left ^ mask_right);
- }
-
- if(padding_left)
- src = LLVMBuildLShr(builder, src, lp_build_int_const_scalar(type, padding_left), "");
- if(padding_right)
- src = LLVMBuildAnd(builder, src, z_bitmask, "");
- if(padding_left || padding_right)
- dst = LLVMBuildAnd(builder, dst, z_bitmask, "");
- }
-
- lp_build_name(dst, "zsbuf.z");
-
- test = lp_build_cmp(&bld, state->func, src, dst);
- lp_build_mask_update(mask, test);
-
- if(state->writemask) {
- if(z_bitmask)
- z_bitmask = LLVMBuildAnd(builder, mask->value, z_bitmask, "");
- else
- z_bitmask = mask->value;
-
- dst = lp_build_select(&bld, z_bitmask, src, dst);
- LLVMBuildStore(builder, dst, dst_ptr);
- }
-}
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