| /************************************************************************** |
| * |
| * 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 |
| * Texture sampling -- SoA. |
| * |
| * @author Jose Fonseca <jfonseca@vmware.com> |
| * @author Brian Paul <brianp@vmware.com> |
| */ |
| |
| #include "pipe/p_defines.h" |
| #include "pipe/p_state.h" |
| #include "pipe/p_shader_tokens.h" |
| #include "util/u_debug.h" |
| #include "util/u_dump.h" |
| #include "util/u_memory.h" |
| #include "util/u_math.h" |
| #include "util/u_format.h" |
| #include "util/u_cpu_detect.h" |
| #include "lp_bld_debug.h" |
| #include "lp_bld_type.h" |
| #include "lp_bld_const.h" |
| #include "lp_bld_conv.h" |
| #include "lp_bld_arit.h" |
| #include "lp_bld_bitarit.h" |
| #include "lp_bld_logic.h" |
| #include "lp_bld_printf.h" |
| #include "lp_bld_swizzle.h" |
| #include "lp_bld_flow.h" |
| #include "lp_bld_gather.h" |
| #include "lp_bld_format.h" |
| #include "lp_bld_sample.h" |
| #include "lp_bld_sample_aos.h" |
| #include "lp_bld_struct.h" |
| #include "lp_bld_quad.h" |
| #include "lp_bld_pack.h" |
| |
| |
| /** |
| * Generate code to fetch a texel from a texture at int coords (x, y, z). |
| * The computation depends on whether the texture is 1D, 2D or 3D. |
| * The result, texel, will be float vectors: |
| * texel[0] = red values |
| * texel[1] = green values |
| * texel[2] = blue values |
| * texel[3] = alpha values |
| */ |
| static void |
| lp_build_sample_texel_soa(struct lp_build_sample_context *bld, |
| unsigned unit, |
| LLVMValueRef width, |
| LLVMValueRef height, |
| LLVMValueRef depth, |
| LLVMValueRef x, |
| LLVMValueRef y, |
| LLVMValueRef z, |
| LLVMValueRef y_stride, |
| LLVMValueRef z_stride, |
| LLVMValueRef data_ptr, |
| LLVMValueRef texel_out[4]) |
| { |
| const struct lp_sampler_static_state *static_state = bld->static_state; |
| const unsigned dims = bld->dims; |
| struct lp_build_context *int_coord_bld = &bld->int_coord_bld; |
| LLVMBuilderRef builder = bld->gallivm->builder; |
| LLVMValueRef offset; |
| LLVMValueRef i, j; |
| LLVMValueRef use_border = NULL; |
| |
| /* use_border = x < 0 || x >= width || y < 0 || y >= height */ |
| if (lp_sampler_wrap_mode_uses_border_color(static_state->wrap_s, |
| static_state->min_img_filter, |
| static_state->mag_img_filter)) { |
| LLVMValueRef b1, b2; |
| b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, x, int_coord_bld->zero); |
| b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, x, width); |
| use_border = LLVMBuildOr(builder, b1, b2, "b1_or_b2"); |
| } |
| |
| if (dims >= 2 && |
| lp_sampler_wrap_mode_uses_border_color(static_state->wrap_t, |
| static_state->min_img_filter, |
| static_state->mag_img_filter)) { |
| LLVMValueRef b1, b2; |
| b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, y, int_coord_bld->zero); |
| b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, y, height); |
| if (use_border) { |
| use_border = LLVMBuildOr(builder, use_border, b1, "ub_or_b1"); |
| use_border = LLVMBuildOr(builder, use_border, b2, "ub_or_b2"); |
| } |
| else { |
| use_border = LLVMBuildOr(builder, b1, b2, "b1_or_b2"); |
| } |
| } |
| |
| if (dims == 3 && |
| lp_sampler_wrap_mode_uses_border_color(static_state->wrap_r, |
| static_state->min_img_filter, |
| static_state->mag_img_filter)) { |
| LLVMValueRef b1, b2; |
| b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, z, int_coord_bld->zero); |
| b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, z, depth); |
| if (use_border) { |
| use_border = LLVMBuildOr(builder, use_border, b1, "ub_or_b1"); |
| use_border = LLVMBuildOr(builder, use_border, b2, "ub_or_b2"); |
| } |
| else { |
| use_border = LLVMBuildOr(builder, b1, b2, "b1_or_b2"); |
| } |
| } |
| |
| /* convert x,y,z coords to linear offset from start of texture, in bytes */ |
| lp_build_sample_offset(&bld->int_coord_bld, |
| bld->format_desc, |
| x, y, z, y_stride, z_stride, |
| &offset, &i, &j); |
| |
| if (use_border) { |
| /* If we can sample the border color, it means that texcoords may |
| * lie outside the bounds of the texture image. We need to do |
| * something to prevent reading out of bounds and causing a segfault. |
| * |
| * Simply AND the texture coords with !use_border. This will cause |
| * coords which are out of bounds to become zero. Zero's guaranteed |
| * to be inside the texture image. |
| */ |
| offset = lp_build_andnot(&bld->int_coord_bld, offset, use_border); |
| } |
| |
| lp_build_fetch_rgba_soa(bld->gallivm, |
| bld->format_desc, |
| bld->texel_type, |
| data_ptr, offset, |
| i, j, |
| texel_out); |
| |
| /* |
| * Note: if we find an app which frequently samples the texture border |
| * we might want to implement a true conditional here to avoid sampling |
| * the texture whenever possible (since that's quite a bit of code). |
| * Ex: |
| * if (use_border) { |
| * texel = border_color; |
| * } |
| * else { |
| * texel = sample_texture(coord); |
| * } |
| * As it is now, we always sample the texture, then selectively replace |
| * the texel color results with the border color. |
| */ |
| |
| if (use_border) { |
| /* select texel color or border color depending on use_border */ |
| LLVMValueRef border_color_ptr = |
| bld->dynamic_state->border_color(bld->dynamic_state, |
| bld->gallivm, unit); |
| int chan; |
| for (chan = 0; chan < 4; chan++) { |
| LLVMValueRef border_chan = |
| lp_build_array_get(bld->gallivm, border_color_ptr, |
| lp_build_const_int32(bld->gallivm, chan)); |
| LLVMValueRef border_chan_vec = |
| lp_build_broadcast_scalar(&bld->float_vec_bld, border_chan); |
| texel_out[chan] = lp_build_select(&bld->texel_bld, use_border, |
| border_chan_vec, texel_out[chan]); |
| } |
| } |
| } |
| |
| |
| /** |
| * Helper to compute the mirror function for the PIPE_WRAP_MIRROR modes. |
| */ |
| static LLVMValueRef |
| lp_build_coord_mirror(struct lp_build_sample_context *bld, |
| LLVMValueRef coord) |
| { |
| struct lp_build_context *coord_bld = &bld->coord_bld; |
| struct lp_build_context *int_coord_bld = &bld->int_coord_bld; |
| LLVMValueRef fract, flr, isOdd; |
| |
| lp_build_ifloor_fract(coord_bld, coord, &flr, &fract); |
| |
| /* isOdd = flr & 1 */ |
| isOdd = LLVMBuildAnd(bld->gallivm->builder, flr, int_coord_bld->one, ""); |
| |
| /* make coord positive or negative depending on isOdd */ |
| coord = lp_build_set_sign(coord_bld, fract, isOdd); |
| |
| /* convert isOdd to float */ |
| isOdd = lp_build_int_to_float(coord_bld, isOdd); |
| |
| /* add isOdd to coord */ |
| coord = lp_build_add(coord_bld, coord, isOdd); |
| |
| return coord; |
| } |
| |
| |
| /** |
| * Helper to compute the first coord and the weight for |
| * linear wrap repeat npot textures |
| */ |
| void |
| lp_build_coord_repeat_npot_linear(struct lp_build_sample_context *bld, |
| LLVMValueRef coord_f, |
| LLVMValueRef length_i, |
| LLVMValueRef length_f, |
| LLVMValueRef *coord0_i, |
| LLVMValueRef *weight_f) |
| { |
| struct lp_build_context *coord_bld = &bld->coord_bld; |
| struct lp_build_context *int_coord_bld = &bld->int_coord_bld; |
| LLVMValueRef half = lp_build_const_vec(bld->gallivm, coord_bld->type, 0.5); |
| LLVMValueRef length_minus_one = lp_build_sub(int_coord_bld, length_i, |
| int_coord_bld->one); |
| LLVMValueRef mask; |
| /* wrap with normalized floats is just fract */ |
| coord_f = lp_build_fract(coord_bld, coord_f); |
| /* mul by size and subtract 0.5 */ |
| coord_f = lp_build_mul(coord_bld, coord_f, length_f); |
| coord_f = lp_build_sub(coord_bld, coord_f, half); |
| /* |
| * we avoided the 0.5/length division before the repeat wrap, |
| * now need to fix up edge cases with selects |
| */ |
| /* convert to int, compute lerp weight */ |
| lp_build_ifloor_fract(coord_bld, coord_f, coord0_i, weight_f); |
| mask = lp_build_compare(int_coord_bld->gallivm, int_coord_bld->type, |
| PIPE_FUNC_LESS, *coord0_i, int_coord_bld->zero); |
| *coord0_i = lp_build_select(int_coord_bld, mask, length_minus_one, *coord0_i); |
| } |
| |
| |
| /** |
| * Build LLVM code for texture wrap mode for linear filtering. |
| * \param x0_out returns first integer texcoord |
| * \param x1_out returns second integer texcoord |
| * \param weight_out returns linear interpolation weight |
| */ |
| static void |
| lp_build_sample_wrap_linear(struct lp_build_sample_context *bld, |
| LLVMValueRef coord, |
| LLVMValueRef length, |
| LLVMValueRef length_f, |
| boolean is_pot, |
| unsigned wrap_mode, |
| LLVMValueRef *x0_out, |
| LLVMValueRef *x1_out, |
| LLVMValueRef *weight_out) |
| { |
| struct lp_build_context *coord_bld = &bld->coord_bld; |
| struct lp_build_context *int_coord_bld = &bld->int_coord_bld; |
| LLVMBuilderRef builder = bld->gallivm->builder; |
| LLVMValueRef half = lp_build_const_vec(bld->gallivm, coord_bld->type, 0.5); |
| LLVMValueRef length_minus_one = lp_build_sub(int_coord_bld, length, int_coord_bld->one); |
| LLVMValueRef coord0, coord1, weight; |
| |
| switch(wrap_mode) { |
| case PIPE_TEX_WRAP_REPEAT: |
| if (is_pot) { |
| /* mul by size and subtract 0.5 */ |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| coord = lp_build_sub(coord_bld, coord, half); |
| /* convert to int, compute lerp weight */ |
| lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); |
| coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); |
| /* repeat wrap */ |
| coord0 = LLVMBuildAnd(builder, coord0, length_minus_one, ""); |
| coord1 = LLVMBuildAnd(builder, coord1, length_minus_one, ""); |
| } |
| else { |
| LLVMValueRef mask; |
| lp_build_coord_repeat_npot_linear(bld, coord, |
| length, length_f, |
| &coord0, &weight); |
| mask = lp_build_compare(int_coord_bld->gallivm, int_coord_bld->type, |
| PIPE_FUNC_NOTEQUAL, coord0, length_minus_one); |
| coord1 = LLVMBuildAnd(builder, |
| lp_build_add(int_coord_bld, coord0, int_coord_bld->one), |
| mask, ""); |
| } |
| break; |
| |
| case PIPE_TEX_WRAP_CLAMP: |
| if (bld->static_state->normalized_coords) { |
| /* scale coord to length */ |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| } |
| |
| /* clamp to [0, length] */ |
| coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, length_f); |
| |
| coord = lp_build_sub(coord_bld, coord, half); |
| |
| /* convert to int, compute lerp weight */ |
| lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); |
| coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); |
| break; |
| |
| case PIPE_TEX_WRAP_CLAMP_TO_EDGE: |
| { |
| struct lp_build_context abs_coord_bld = bld->coord_bld; |
| abs_coord_bld.type.sign = FALSE; |
| |
| if (bld->static_state->normalized_coords) { |
| /* mul by tex size */ |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| } |
| /* clamp to length max */ |
| coord = lp_build_min(coord_bld, coord, length_f); |
| /* subtract 0.5 */ |
| coord = lp_build_sub(coord_bld, coord, half); |
| /* clamp to [0, length - 0.5] */ |
| coord = lp_build_max(coord_bld, coord, coord_bld->zero); |
| /* convert to int, compute lerp weight */ |
| lp_build_ifloor_fract(&abs_coord_bld, coord, &coord0, &weight); |
| coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); |
| /* coord1 = min(coord1, length-1) */ |
| coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one); |
| break; |
| } |
| |
| case PIPE_TEX_WRAP_CLAMP_TO_BORDER: |
| { |
| LLVMValueRef min; |
| if (bld->static_state->normalized_coords) { |
| /* scale coord to length */ |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| } |
| /* was: clamp to [-0.5, length + 0.5], then sub 0.5 */ |
| coord = lp_build_sub(coord_bld, coord, half); |
| min = lp_build_const_vec(bld->gallivm, coord_bld->type, -1.0F); |
| coord = lp_build_clamp(coord_bld, coord, min, length_f); |
| /* convert to int, compute lerp weight */ |
| lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); |
| coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); |
| } |
| break; |
| |
| case PIPE_TEX_WRAP_MIRROR_REPEAT: |
| /* compute mirror function */ |
| coord = lp_build_coord_mirror(bld, coord); |
| |
| /* scale coord to length */ |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| coord = lp_build_sub(coord_bld, coord, half); |
| |
| /* convert to int, compute lerp weight */ |
| lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); |
| coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); |
| |
| /* coord0 = max(coord0, 0) */ |
| coord0 = lp_build_max(int_coord_bld, coord0, int_coord_bld->zero); |
| /* coord1 = min(coord1, length-1) */ |
| coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one); |
| break; |
| |
| case PIPE_TEX_WRAP_MIRROR_CLAMP: |
| coord = lp_build_abs(coord_bld, coord); |
| |
| if (bld->static_state->normalized_coords) { |
| /* scale coord to length */ |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| } |
| |
| /* clamp to [0, length] */ |
| coord = lp_build_min(coord_bld, coord, length_f); |
| |
| coord = lp_build_sub(coord_bld, coord, half); |
| |
| /* convert to int, compute lerp weight */ |
| lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); |
| coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); |
| break; |
| |
| case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE: |
| { |
| LLVMValueRef min, max; |
| struct lp_build_context abs_coord_bld = bld->coord_bld; |
| abs_coord_bld.type.sign = FALSE; |
| coord = lp_build_abs(coord_bld, coord); |
| |
| if (bld->static_state->normalized_coords) { |
| /* scale coord to length */ |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| } |
| |
| /* clamp to [0.5, length - 0.5] */ |
| min = half; |
| max = lp_build_sub(coord_bld, length_f, min); |
| coord = lp_build_clamp(coord_bld, coord, min, max); |
| |
| coord = lp_build_sub(coord_bld, coord, half); |
| |
| /* convert to int, compute lerp weight */ |
| lp_build_ifloor_fract(&abs_coord_bld, coord, &coord0, &weight); |
| coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); |
| } |
| break; |
| |
| case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER: |
| { |
| coord = lp_build_abs(coord_bld, coord); |
| |
| if (bld->static_state->normalized_coords) { |
| /* scale coord to length */ |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| } |
| |
| /* was: clamp to [-0.5, length + 0.5] then sub 0.5 */ |
| /* skip -0.5 clamp (always positive), do sub first */ |
| coord = lp_build_sub(coord_bld, coord, half); |
| coord = lp_build_min(coord_bld, coord, length_f); |
| |
| /* convert to int, compute lerp weight */ |
| lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); |
| coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); |
| } |
| break; |
| |
| default: |
| assert(0); |
| coord0 = NULL; |
| coord1 = NULL; |
| weight = NULL; |
| } |
| |
| *x0_out = coord0; |
| *x1_out = coord1; |
| *weight_out = weight; |
| } |
| |
| |
| /** |
| * Build LLVM code for texture wrap mode for nearest filtering. |
| * \param coord the incoming texcoord (nominally in [0,1]) |
| * \param length the texture size along one dimension, as int vector |
| * \param is_pot if TRUE, length is a power of two |
| * \param wrap_mode one of PIPE_TEX_WRAP_x |
| */ |
| static LLVMValueRef |
| lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld, |
| LLVMValueRef coord, |
| LLVMValueRef length, |
| LLVMValueRef length_f, |
| boolean is_pot, |
| unsigned wrap_mode) |
| { |
| struct lp_build_context *coord_bld = &bld->coord_bld; |
| struct lp_build_context *int_coord_bld = &bld->int_coord_bld; |
| LLVMBuilderRef builder = bld->gallivm->builder; |
| LLVMValueRef length_minus_one = lp_build_sub(int_coord_bld, length, int_coord_bld->one); |
| LLVMValueRef icoord; |
| |
| switch(wrap_mode) { |
| case PIPE_TEX_WRAP_REPEAT: |
| if (is_pot) { |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| icoord = lp_build_ifloor(coord_bld, coord); |
| icoord = LLVMBuildAnd(builder, icoord, length_minus_one, ""); |
| } |
| else { |
| /* take fraction, unnormalize */ |
| coord = lp_build_fract_safe(coord_bld, coord); |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| icoord = lp_build_itrunc(coord_bld, coord); |
| } |
| break; |
| |
| case PIPE_TEX_WRAP_CLAMP: |
| case PIPE_TEX_WRAP_CLAMP_TO_EDGE: |
| if (bld->static_state->normalized_coords) { |
| /* scale coord to length */ |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| } |
| |
| /* floor */ |
| /* use itrunc instead since we clamp to 0 anyway */ |
| icoord = lp_build_itrunc(coord_bld, coord); |
| |
| /* clamp to [0, length - 1]. */ |
| icoord = lp_build_clamp(int_coord_bld, icoord, int_coord_bld->zero, |
| length_minus_one); |
| break; |
| |
| case PIPE_TEX_WRAP_CLAMP_TO_BORDER: |
| /* Note: this is the same as CLAMP_TO_EDGE, except min = -1 */ |
| { |
| LLVMValueRef min, max; |
| |
| if (bld->static_state->normalized_coords) { |
| /* scale coord to length */ |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| } |
| |
| icoord = lp_build_ifloor(coord_bld, coord); |
| |
| /* clamp to [-1, length] */ |
| min = lp_build_negate(int_coord_bld, int_coord_bld->one); |
| max = length; |
| icoord = lp_build_clamp(int_coord_bld, icoord, min, max); |
| } |
| break; |
| |
| case PIPE_TEX_WRAP_MIRROR_REPEAT: |
| /* compute mirror function */ |
| coord = lp_build_coord_mirror(bld, coord); |
| |
| /* scale coord to length */ |
| assert(bld->static_state->normalized_coords); |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| |
| /* itrunc == ifloor here */ |
| icoord = lp_build_itrunc(coord_bld, coord); |
| |
| /* clamp to [0, length - 1] */ |
| icoord = lp_build_min(int_coord_bld, icoord, length_minus_one); |
| break; |
| |
| case PIPE_TEX_WRAP_MIRROR_CLAMP: |
| case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE: |
| coord = lp_build_abs(coord_bld, coord); |
| |
| if (bld->static_state->normalized_coords) { |
| /* scale coord to length */ |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| } |
| |
| /* itrunc == ifloor here */ |
| icoord = lp_build_itrunc(coord_bld, coord); |
| |
| /* clamp to [0, length - 1] */ |
| icoord = lp_build_min(int_coord_bld, icoord, length_minus_one); |
| break; |
| |
| case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER: |
| coord = lp_build_abs(coord_bld, coord); |
| |
| if (bld->static_state->normalized_coords) { |
| /* scale coord to length */ |
| coord = lp_build_mul(coord_bld, coord, length_f); |
| } |
| |
| /* itrunc == ifloor here */ |
| icoord = lp_build_itrunc(coord_bld, coord); |
| |
| /* clamp to [0, length] */ |
| icoord = lp_build_min(int_coord_bld, icoord, length); |
| break; |
| |
| default: |
| assert(0); |
| icoord = NULL; |
| } |
| |
| return icoord; |
| } |
| |
| |
| /** |
| * Generate code to sample a mipmap level with nearest filtering. |
| * If sampling a cube texture, r = cube face in [0,5]. |
| */ |
| static void |
| lp_build_sample_image_nearest(struct lp_build_sample_context *bld, |
| unsigned unit, |
| LLVMValueRef size, |
| LLVMValueRef row_stride_vec, |
| LLVMValueRef img_stride_vec, |
| LLVMValueRef data_ptr, |
| LLVMValueRef s, |
| LLVMValueRef t, |
| LLVMValueRef r, |
| LLVMValueRef colors_out[4]) |
| { |
| const unsigned dims = bld->dims; |
| LLVMValueRef width_vec; |
| LLVMValueRef height_vec; |
| LLVMValueRef depth_vec; |
| LLVMValueRef flt_size; |
| LLVMValueRef flt_width_vec; |
| LLVMValueRef flt_height_vec; |
| LLVMValueRef flt_depth_vec; |
| LLVMValueRef x, y, z; |
| |
| lp_build_extract_image_sizes(bld, |
| bld->int_size_type, |
| bld->int_coord_type, |
| size, |
| &width_vec, &height_vec, &depth_vec); |
| |
| flt_size = lp_build_int_to_float(&bld->float_size_bld, size); |
| |
| lp_build_extract_image_sizes(bld, |
| bld->float_size_type, |
| bld->coord_type, |
| flt_size, |
| &flt_width_vec, &flt_height_vec, &flt_depth_vec); |
| |
| /* |
| * Compute integer texcoords. |
| */ |
| x = lp_build_sample_wrap_nearest(bld, s, width_vec, flt_width_vec, |
| bld->static_state->pot_width, |
| bld->static_state->wrap_s); |
| lp_build_name(x, "tex.x.wrapped"); |
| |
| if (dims >= 2) { |
| y = lp_build_sample_wrap_nearest(bld, t, height_vec, flt_height_vec, |
| bld->static_state->pot_height, |
| bld->static_state->wrap_t); |
| lp_build_name(y, "tex.y.wrapped"); |
| |
| if (dims == 3) { |
| z = lp_build_sample_wrap_nearest(bld, r, depth_vec, flt_depth_vec, |
| bld->static_state->pot_depth, |
| bld->static_state->wrap_r); |
| lp_build_name(z, "tex.z.wrapped"); |
| } |
| else if (bld->static_state->target == PIPE_TEXTURE_CUBE) { |
| z = r; |
| } |
| else { |
| z = NULL; |
| } |
| } |
| else { |
| y = z = NULL; |
| } |
| |
| /* |
| * Get texture colors. |
| */ |
| lp_build_sample_texel_soa(bld, unit, |
| width_vec, height_vec, depth_vec, |
| x, y, z, |
| row_stride_vec, img_stride_vec, |
| data_ptr, colors_out); |
| } |
| |
| |
| /** |
| * Generate code to sample a mipmap level with linear filtering. |
| * If sampling a cube texture, r = cube face in [0,5]. |
| */ |
| static void |
| lp_build_sample_image_linear(struct lp_build_sample_context *bld, |
| unsigned unit, |
| LLVMValueRef size, |
| LLVMValueRef row_stride_vec, |
| LLVMValueRef img_stride_vec, |
| LLVMValueRef data_ptr, |
| LLVMValueRef s, |
| LLVMValueRef t, |
| LLVMValueRef r, |
| LLVMValueRef colors_out[4]) |
| { |
| const unsigned dims = bld->dims; |
| LLVMValueRef width_vec; |
| LLVMValueRef height_vec; |
| LLVMValueRef depth_vec; |
| LLVMValueRef flt_size; |
| LLVMValueRef flt_width_vec; |
| LLVMValueRef flt_height_vec; |
| LLVMValueRef flt_depth_vec; |
| LLVMValueRef x0, y0, z0, x1, y1, z1; |
| LLVMValueRef s_fpart, t_fpart, r_fpart; |
| LLVMValueRef neighbors[2][2][4]; |
| int chan; |
| |
| lp_build_extract_image_sizes(bld, |
| bld->int_size_type, |
| bld->int_coord_type, |
| size, |
| &width_vec, &height_vec, &depth_vec); |
| |
| flt_size = lp_build_int_to_float(&bld->float_size_bld, size); |
| |
| lp_build_extract_image_sizes(bld, |
| bld->float_size_type, |
| bld->coord_type, |
| flt_size, |
| &flt_width_vec, &flt_height_vec, &flt_depth_vec); |
| |
| /* |
| * Compute integer texcoords. |
| */ |
| lp_build_sample_wrap_linear(bld, s, width_vec, flt_width_vec, |
| bld->static_state->pot_width, |
| bld->static_state->wrap_s, |
| &x0, &x1, &s_fpart); |
| lp_build_name(x0, "tex.x0.wrapped"); |
| lp_build_name(x1, "tex.x1.wrapped"); |
| |
| if (dims >= 2) { |
| lp_build_sample_wrap_linear(bld, t, height_vec, flt_height_vec, |
| bld->static_state->pot_height, |
| bld->static_state->wrap_t, |
| &y0, &y1, &t_fpart); |
| lp_build_name(y0, "tex.y0.wrapped"); |
| lp_build_name(y1, "tex.y1.wrapped"); |
| |
| if (dims == 3) { |
| lp_build_sample_wrap_linear(bld, r, depth_vec, flt_depth_vec, |
| bld->static_state->pot_depth, |
| bld->static_state->wrap_r, |
| &z0, &z1, &r_fpart); |
| lp_build_name(z0, "tex.z0.wrapped"); |
| lp_build_name(z1, "tex.z1.wrapped"); |
| } |
| else if (bld->static_state->target == PIPE_TEXTURE_CUBE) { |
| z0 = z1 = r; /* cube face */ |
| r_fpart = NULL; |
| } |
| else { |
| z0 = z1 = NULL; |
| r_fpart = NULL; |
| } |
| } |
| else { |
| y0 = y1 = t_fpart = NULL; |
| z0 = z1 = r_fpart = NULL; |
| } |
| |
| /* |
| * Get texture colors. |
| */ |
| /* get x0/x1 texels */ |
| lp_build_sample_texel_soa(bld, unit, |
| width_vec, height_vec, depth_vec, |
| x0, y0, z0, |
| row_stride_vec, img_stride_vec, |
| data_ptr, neighbors[0][0]); |
| lp_build_sample_texel_soa(bld, unit, |
| width_vec, height_vec, depth_vec, |
| x1, y0, z0, |
| row_stride_vec, img_stride_vec, |
| data_ptr, neighbors[0][1]); |
| |
| if (dims == 1) { |
| /* Interpolate two samples from 1D image to produce one color */ |
| for (chan = 0; chan < 4; chan++) { |
| colors_out[chan] = lp_build_lerp(&bld->texel_bld, s_fpart, |
| neighbors[0][0][chan], |
| neighbors[0][1][chan]); |
| } |
| } |
| else { |
| /* 2D/3D texture */ |
| LLVMValueRef colors0[4]; |
| |
| /* get x0/x1 texels at y1 */ |
| lp_build_sample_texel_soa(bld, unit, |
| width_vec, height_vec, depth_vec, |
| x0, y1, z0, |
| row_stride_vec, img_stride_vec, |
| data_ptr, neighbors[1][0]); |
| lp_build_sample_texel_soa(bld, unit, |
| width_vec, height_vec, depth_vec, |
| x1, y1, z0, |
| row_stride_vec, img_stride_vec, |
| data_ptr, neighbors[1][1]); |
| |
| /* Bilinear interpolate the four samples from the 2D image / 3D slice */ |
| for (chan = 0; chan < 4; chan++) { |
| colors0[chan] = lp_build_lerp_2d(&bld->texel_bld, |
| s_fpart, t_fpart, |
| neighbors[0][0][chan], |
| neighbors[0][1][chan], |
| neighbors[1][0][chan], |
| neighbors[1][1][chan]); |
| } |
| |
| if (dims == 3) { |
| LLVMValueRef neighbors1[2][2][4]; |
| LLVMValueRef colors1[4]; |
| |
| /* get x0/x1/y0/y1 texels at z1 */ |
| lp_build_sample_texel_soa(bld, unit, |
| width_vec, height_vec, depth_vec, |
| x0, y0, z1, |
| row_stride_vec, img_stride_vec, |
| data_ptr, neighbors1[0][0]); |
| lp_build_sample_texel_soa(bld, unit, |
| width_vec, height_vec, depth_vec, |
| x1, y0, z1, |
| row_stride_vec, img_stride_vec, |
| data_ptr, neighbors1[0][1]); |
| lp_build_sample_texel_soa(bld, unit, |
| width_vec, height_vec, depth_vec, |
| x0, y1, z1, |
| row_stride_vec, img_stride_vec, |
| data_ptr, neighbors1[1][0]); |
| lp_build_sample_texel_soa(bld, unit, |
| width_vec, height_vec, depth_vec, |
| x1, y1, z1, |
| row_stride_vec, img_stride_vec, |
| data_ptr, neighbors1[1][1]); |
| |
| /* Bilinear interpolate the four samples from the second Z slice */ |
| for (chan = 0; chan < 4; chan++) { |
| colors1[chan] = lp_build_lerp_2d(&bld->texel_bld, |
| s_fpart, t_fpart, |
| neighbors1[0][0][chan], |
| neighbors1[0][1][chan], |
| neighbors1[1][0][chan], |
| neighbors1[1][1][chan]); |
| } |
| |
| /* Linearly interpolate the two samples from the two 3D slices */ |
| for (chan = 0; chan < 4; chan++) { |
| colors_out[chan] = lp_build_lerp(&bld->texel_bld, |
| r_fpart, |
| colors0[chan], colors1[chan]); |
| } |
| } |
| else { |
| /* 2D tex */ |
| for (chan = 0; chan < 4; chan++) { |
| colors_out[chan] = colors0[chan]; |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * Sample the texture/mipmap using given image filter and mip filter. |
| * data0_ptr and data1_ptr point to the two mipmap levels to sample |
| * from. width0/1_vec, height0/1_vec, depth0/1_vec indicate their sizes. |
| * If we're using nearest miplevel sampling the '1' values will be null/unused. |
| */ |
| static void |
| lp_build_sample_mipmap(struct lp_build_sample_context *bld, |
| unsigned unit, |
| unsigned img_filter, |
| unsigned mip_filter, |
| LLVMValueRef s, |
| LLVMValueRef t, |
| LLVMValueRef r, |
| LLVMValueRef ilevel0, |
| LLVMValueRef ilevel1, |
| LLVMValueRef lod_fpart, |
| LLVMValueRef *colors_out) |
| { |
| LLVMBuilderRef builder = bld->gallivm->builder; |
| LLVMValueRef size0 = NULL; |
| LLVMValueRef size1 = NULL; |
| LLVMValueRef row_stride0_vec = NULL; |
| LLVMValueRef row_stride1_vec = NULL; |
| LLVMValueRef img_stride0_vec = NULL; |
| LLVMValueRef img_stride1_vec = NULL; |
| LLVMValueRef data_ptr0 = NULL; |
| LLVMValueRef data_ptr1 = NULL; |
| LLVMValueRef colors0[4], colors1[4]; |
| unsigned chan; |
| |
| /* sample the first mipmap level */ |
| lp_build_mipmap_level_sizes(bld, ilevel0, |
| &size0, |
| &row_stride0_vec, &img_stride0_vec); |
| data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0); |
| if (img_filter == PIPE_TEX_FILTER_NEAREST) { |
| lp_build_sample_image_nearest(bld, unit, |
| size0, |
| row_stride0_vec, img_stride0_vec, |
| data_ptr0, s, t, r, |
| colors0); |
| } |
| else { |
| assert(img_filter == PIPE_TEX_FILTER_LINEAR); |
| lp_build_sample_image_linear(bld, unit, |
| size0, |
| row_stride0_vec, img_stride0_vec, |
| data_ptr0, s, t, r, |
| colors0); |
| } |
| |
| /* Store the first level's colors in the output variables */ |
| for (chan = 0; chan < 4; chan++) { |
| LLVMBuildStore(builder, colors0[chan], colors_out[chan]); |
| } |
| |
| if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) { |
| struct lp_build_if_state if_ctx; |
| LLVMValueRef need_lerp; |
| unsigned num_quads = bld->coord_bld.type.length / 4; |
| |
| /* need_lerp = lod_fpart > 0 */ |
| if (num_quads == 1) { |
| need_lerp = LLVMBuildFCmp(builder, LLVMRealUGT, |
| lod_fpart, bld->perquadf_bld.zero, |
| "need_lerp"); |
| } |
| else { |
| /* |
| * We'll do mip filtering if any of the quads need it. |
| * It might be better to split the vectors here and only fetch/filter |
| * quads which need it. |
| */ |
| /* |
| * We unfortunately need to clamp lod_fpart here since we can get |
| * negative values which would screw up filtering if not all |
| * lod_fpart values have same sign. |
| */ |
| lod_fpart = lp_build_max(&bld->perquadf_bld, lod_fpart, |
| bld->perquadf_bld.zero); |
| need_lerp = lp_build_compare(bld->gallivm, bld->perquadf_bld.type, |
| PIPE_FUNC_GREATER, |
| lod_fpart, bld->perquadf_bld.zero); |
| need_lerp = lp_build_any_true_range(&bld->perquadi_bld, num_quads, need_lerp); |
| } |
| |
| lp_build_if(&if_ctx, bld->gallivm, need_lerp); |
| { |
| /* sample the second mipmap level */ |
| lp_build_mipmap_level_sizes(bld, ilevel1, |
| &size1, |
| &row_stride1_vec, &img_stride1_vec); |
| data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1); |
| if (img_filter == PIPE_TEX_FILTER_NEAREST) { |
| lp_build_sample_image_nearest(bld, unit, |
| size1, |
| row_stride1_vec, img_stride1_vec, |
| data_ptr1, s, t, r, |
| colors1); |
| } |
| else { |
| lp_build_sample_image_linear(bld, unit, |
| size1, |
| row_stride1_vec, img_stride1_vec, |
| data_ptr1, s, t, r, |
| colors1); |
| } |
| |
| /* interpolate samples from the two mipmap levels */ |
| |
| lod_fpart = lp_build_unpack_broadcast_aos_scalars(bld->gallivm, |
| bld->perquadf_bld.type, |
| bld->texel_bld.type, |
| lod_fpart); |
| |
| for (chan = 0; chan < 4; chan++) { |
| colors0[chan] = lp_build_lerp(&bld->texel_bld, lod_fpart, |
| colors0[chan], colors1[chan]); |
| LLVMBuildStore(builder, colors0[chan], colors_out[chan]); |
| } |
| } |
| lp_build_endif(&if_ctx); |
| } |
| } |
| |
| /** |
| * Calculate cube face, lod, mip levels. |
| */ |
| static void |
| lp_build_sample_common(struct lp_build_sample_context *bld, |
| unsigned unit, |
| LLVMValueRef *s, |
| LLVMValueRef *t, |
| LLVMValueRef *r, |
| const struct lp_derivatives *derivs, |
| LLVMValueRef lod_bias, /* optional */ |
| LLVMValueRef explicit_lod, /* optional */ |
| LLVMValueRef *lod_ipart, |
| LLVMValueRef *lod_fpart, |
| LLVMValueRef *ilevel0, |
| LLVMValueRef *ilevel1) |
| { |
| const unsigned mip_filter = bld->static_state->min_mip_filter; |
| const unsigned min_filter = bld->static_state->min_img_filter; |
| const unsigned mag_filter = bld->static_state->mag_img_filter; |
| LLVMValueRef first_level; |
| struct lp_derivatives face_derivs; |
| |
| /* |
| printf("%s mip %d min %d mag %d\n", __FUNCTION__, |
| mip_filter, min_filter, mag_filter); |
| */ |
| |
| /* |
| * Choose cube face, recompute texcoords and derivatives for the chosen face. |
| */ |
| if (bld->static_state->target == PIPE_TEXTURE_CUBE) { |
| LLVMValueRef face, face_s, face_t; |
| lp_build_cube_lookup(bld, *s, *t, *r, &face, &face_s, &face_t); |
| *s = face_s; /* vec */ |
| *t = face_t; /* vec */ |
| /* use 'r' to indicate cube face */ |
| *r = face; /* vec */ |
| |
| /* recompute ddx, ddy using the new (s,t) face texcoords */ |
| face_derivs.ddx_ddy[0] = lp_build_packed_ddx_ddy_twocoord(&bld->coord_bld, *s, *t); |
| face_derivs.ddx_ddy[1] = NULL; |
| derivs = &face_derivs; |
| } |
| |
| /* |
| * Compute the level of detail (float). |
| */ |
| if (min_filter != mag_filter || |
| mip_filter != PIPE_TEX_MIPFILTER_NONE) { |
| /* Need to compute lod either to choose mipmap levels or to |
| * distinguish between minification/magnification with one mipmap level. |
| */ |
| lp_build_lod_selector(bld, unit, derivs, |
| lod_bias, explicit_lod, |
| mip_filter, |
| lod_ipart, lod_fpart); |
| } else { |
| *lod_ipart = bld->perquadi_bld.zero; |
| } |
| |
| /* |
| * Compute integer mipmap level(s) to fetch texels from: ilevel0, ilevel1 |
| */ |
| switch (mip_filter) { |
| default: |
| assert(0 && "bad mip_filter value in lp_build_sample_soa()"); |
| /* fall-through */ |
| case PIPE_TEX_MIPFILTER_NONE: |
| /* always use mip level 0 */ |
| if (bld->static_state->target == PIPE_TEXTURE_CUBE) { |
| /* XXX this is a work-around for an apparent bug in LLVM 2.7. |
| * We should be able to set ilevel0 = const(0) but that causes |
| * bad x86 code to be emitted. |
| * XXX should probably disable that on other llvm versions. |
| */ |
| assert(*lod_ipart); |
| lp_build_nearest_mip_level(bld, unit, *lod_ipart, ilevel0); |
| } |
| else { |
| first_level = bld->dynamic_state->first_level(bld->dynamic_state, |
| bld->gallivm, unit); |
| first_level = lp_build_broadcast_scalar(&bld->perquadi_bld, first_level); |
| *ilevel0 = first_level; |
| } |
| break; |
| case PIPE_TEX_MIPFILTER_NEAREST: |
| assert(*lod_ipart); |
| lp_build_nearest_mip_level(bld, unit, *lod_ipart, ilevel0); |
| break; |
| case PIPE_TEX_MIPFILTER_LINEAR: |
| assert(*lod_ipart); |
| assert(*lod_fpart); |
| lp_build_linear_mip_levels(bld, unit, |
| *lod_ipart, lod_fpart, |
| ilevel0, ilevel1); |
| break; |
| } |
| } |
| |
| /** |
| * General texture sampling codegen. |
| * This function handles texture sampling for all texture targets (1D, |
| * 2D, 3D, cube) and all filtering modes. |
| */ |
| static void |
| lp_build_sample_general(struct lp_build_sample_context *bld, |
| unsigned unit, |
| LLVMValueRef s, |
| LLVMValueRef t, |
| LLVMValueRef r, |
| LLVMValueRef lod_ipart, |
| LLVMValueRef lod_fpart, |
| LLVMValueRef ilevel0, |
| LLVMValueRef ilevel1, |
| LLVMValueRef *colors_out) |
| { |
| struct lp_build_context *int_bld = &bld->int_bld; |
| LLVMBuilderRef builder = bld->gallivm->builder; |
| const unsigned mip_filter = bld->static_state->min_mip_filter; |
| const unsigned min_filter = bld->static_state->min_img_filter; |
| const unsigned mag_filter = bld->static_state->mag_img_filter; |
| LLVMValueRef texels[4]; |
| unsigned chan; |
| |
| /* |
| * Get/interpolate texture colors. |
| */ |
| |
| for (chan = 0; chan < 4; ++chan) { |
| texels[chan] = lp_build_alloca(bld->gallivm, bld->texel_bld.vec_type, ""); |
| lp_build_name(texels[chan], "sampler%u_texel_%c_var", unit, "xyzw"[chan]); |
| } |
| |
| if (min_filter == mag_filter) { |
| /* no need to distinguish between minification and magnification */ |
| lp_build_sample_mipmap(bld, unit, |
| min_filter, mip_filter, |
| s, t, r, |
| ilevel0, ilevel1, lod_fpart, |
| texels); |
| } |
| else { |
| /* Emit conditional to choose min image filter or mag image filter |
| * depending on the lod being > 0 or <= 0, respectively. |
| */ |
| struct lp_build_if_state if_ctx; |
| LLVMValueRef minify; |
| |
| /* minify = lod >= 0.0 */ |
| minify = LLVMBuildICmp(builder, LLVMIntSGE, |
| lod_ipart, int_bld->zero, ""); |
| |
| lp_build_if(&if_ctx, bld->gallivm, minify); |
| { |
| /* Use the minification filter */ |
| lp_build_sample_mipmap(bld, unit, |
| min_filter, mip_filter, |
| s, t, r, |
| ilevel0, ilevel1, lod_fpart, |
| texels); |
| } |
| lp_build_else(&if_ctx); |
| { |
| /* Use the magnification filter */ |
| lp_build_sample_mipmap(bld, unit, |
| mag_filter, PIPE_TEX_MIPFILTER_NONE, |
| s, t, r, |
| ilevel0, NULL, NULL, |
| texels); |
| } |
| lp_build_endif(&if_ctx); |
| } |
| |
| for (chan = 0; chan < 4; ++chan) { |
| colors_out[chan] = LLVMBuildLoad(builder, texels[chan], ""); |
| lp_build_name(colors_out[chan], "sampler%u_texel_%c", unit, "xyzw"[chan]); |
| } |
| } |
| |
| |
| /** |
| * Do shadow test/comparison. |
| * \param p the texcoord Z (aka R, aka P) component |
| * \param texel the texel to compare against (use the X channel) |
| */ |
| static void |
| lp_build_sample_compare(struct lp_build_sample_context *bld, |
| LLVMValueRef p, |
| LLVMValueRef texel[4]) |
| { |
| struct lp_build_context *texel_bld = &bld->texel_bld; |
| LLVMBuilderRef builder = bld->gallivm->builder; |
| LLVMValueRef res; |
| const unsigned chan = 0; |
| |
| if (bld->static_state->compare_mode == PIPE_TEX_COMPARE_NONE) |
| return; |
| |
| /* debug code */ |
| if (0) { |
| LLVMValueRef indx = lp_build_const_int32(bld->gallivm, 0); |
| LLVMValueRef coord = LLVMBuildExtractElement(builder, p, indx, ""); |
| LLVMValueRef tex = LLVMBuildExtractElement(builder, texel[chan], indx, ""); |
| lp_build_printf(bld->gallivm, "shadow compare coord %f to texture %f\n", |
| coord, tex); |
| } |
| |
| /* Clamp p coords to [0,1] */ |
| p = lp_build_clamp(&bld->coord_bld, p, |
| bld->coord_bld.zero, |
| bld->coord_bld.one); |
| |
| /* result = (p FUNC texel) ? 1 : 0 */ |
| res = lp_build_cmp(texel_bld, bld->static_state->compare_func, |
| p, texel[chan]); |
| res = lp_build_select(texel_bld, res, texel_bld->one, texel_bld->zero); |
| |
| /* XXX returning result for default GL_DEPTH_TEXTURE_MODE = GL_LUMINANCE */ |
| texel[0] = |
| texel[1] = |
| texel[2] = res; |
| texel[3] = texel_bld->one; |
| } |
| |
| |
| /** |
| * Just set texels to white instead of actually sampling the texture. |
| * For debugging. |
| */ |
| void |
| lp_build_sample_nop(struct gallivm_state *gallivm, |
| struct lp_type type, |
| unsigned num_coords, |
| const LLVMValueRef *coords, |
| LLVMValueRef texel_out[4]) |
| { |
| LLVMValueRef one = lp_build_one(gallivm, type); |
| unsigned chan; |
| |
| for (chan = 0; chan < 4; chan++) { |
| texel_out[chan] = one; |
| } |
| } |
| |
| |
| /** |
| * Build texture sampling code. |
| * 'texel' will return a vector of four LLVMValueRefs corresponding to |
| * R, G, B, A. |
| * \param type vector float type to use for coords, etc. |
| * \param derivs partial derivatives of (s,t,r,q) with respect to x and y |
| */ |
| void |
| lp_build_sample_soa(struct gallivm_state *gallivm, |
| const struct lp_sampler_static_state *static_state, |
| struct lp_sampler_dynamic_state *dynamic_state, |
| struct lp_type type, |
| unsigned unit, |
| unsigned num_coords, |
| const LLVMValueRef *coords, |
| const struct lp_derivatives *derivs, |
| LLVMValueRef lod_bias, /* optional */ |
| LLVMValueRef explicit_lod, /* optional */ |
| LLVMValueRef texel_out[4]) |
| { |
| unsigned dims = texture_dims(static_state->target); |
| struct lp_build_sample_context bld; |
| LLVMTypeRef i32t = LLVMInt32TypeInContext(gallivm->context); |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMValueRef tex_width, tex_height, tex_depth; |
| LLVMValueRef s; |
| LLVMValueRef t; |
| LLVMValueRef r; |
| |
| if (0) { |
| enum pipe_format fmt = static_state->format; |
| debug_printf("Sample from %s\n", util_format_name(fmt)); |
| } |
| |
| assert(type.floating); |
| |
| /* Setup our build context */ |
| memset(&bld, 0, sizeof bld); |
| bld.gallivm = gallivm; |
| bld.static_state = static_state; |
| bld.dynamic_state = dynamic_state; |
| bld.format_desc = util_format_description(static_state->format); |
| bld.dims = dims; |
| |
| bld.vector_width = lp_type_width(type); |
| |
| bld.float_type = lp_type_float(32); |
| bld.int_type = lp_type_int(32); |
| bld.coord_type = type; |
| bld.int_coord_type = lp_int_type(type); |
| bld.float_size_type = lp_type_float(32); |
| bld.float_size_type.length = dims > 1 ? 4 : 1; |
| bld.int_size_type = lp_int_type(bld.float_size_type); |
| bld.texel_type = type; |
| bld.perquadf_type = type; |
| /* we want native vector size to be able to use our intrinsics */ |
| bld.perquadf_type.length = type.length > 4 ? ((type.length + 15) / 16) * 4 : 1; |
| bld.perquadi_type = lp_int_type(bld.perquadf_type); |
| |
| lp_build_context_init(&bld.float_bld, gallivm, bld.float_type); |
| lp_build_context_init(&bld.float_vec_bld, gallivm, type); |
| lp_build_context_init(&bld.int_bld, gallivm, bld.int_type); |
| lp_build_context_init(&bld.coord_bld, gallivm, bld.coord_type); |
| lp_build_context_init(&bld.int_coord_bld, gallivm, bld.int_coord_type); |
| lp_build_context_init(&bld.int_size_bld, gallivm, bld.int_size_type); |
| lp_build_context_init(&bld.float_size_bld, gallivm, bld.float_size_type); |
| lp_build_context_init(&bld.texel_bld, gallivm, bld.texel_type); |
| lp_build_context_init(&bld.perquadf_bld, gallivm, bld.perquadf_type); |
| lp_build_context_init(&bld.perquadi_bld, gallivm, bld.perquadi_type); |
| |
| /* Get the dynamic state */ |
| tex_width = dynamic_state->width(dynamic_state, gallivm, unit); |
| tex_height = dynamic_state->height(dynamic_state, gallivm, unit); |
| tex_depth = dynamic_state->depth(dynamic_state, gallivm, unit); |
| bld.row_stride_array = dynamic_state->row_stride(dynamic_state, gallivm, unit); |
| bld.img_stride_array = dynamic_state->img_stride(dynamic_state, gallivm, unit); |
| bld.data_array = dynamic_state->data_ptr(dynamic_state, gallivm, unit); |
| /* Note that data_array is an array[level] of pointers to texture images */ |
| |
| s = coords[0]; |
| t = coords[1]; |
| r = coords[2]; |
| |
| /* width, height, depth as single int vector */ |
| if (dims <= 1) { |
| bld.int_size = tex_width; |
| } |
| else { |
| bld.int_size = LLVMBuildInsertElement(builder, bld.int_size_bld.undef, |
| tex_width, LLVMConstInt(i32t, 0, 0), ""); |
| if (dims >= 2) { |
| bld.int_size = LLVMBuildInsertElement(builder, bld.int_size, |
| tex_height, LLVMConstInt(i32t, 1, 0), ""); |
| if (dims >= 3) { |
| bld.int_size = LLVMBuildInsertElement(builder, bld.int_size, |
| tex_depth, LLVMConstInt(i32t, 2, 0), ""); |
| } |
| } |
| } |
| |
| if (0) { |
| /* For debug: no-op texture sampling */ |
| lp_build_sample_nop(gallivm, |
| bld.texel_type, |
| num_coords, |
| coords, |
| texel_out); |
| } |
| else { |
| LLVMValueRef lod_ipart = NULL, lod_fpart = NULL; |
| LLVMValueRef ilevel0 = NULL, ilevel1 = NULL; |
| unsigned num_quads = type.length / 4; |
| const unsigned mip_filter = bld.static_state->min_mip_filter; |
| boolean use_aos = util_format_fits_8unorm(bld.format_desc) && |
| lp_is_simple_wrap_mode(static_state->wrap_s) && |
| lp_is_simple_wrap_mode(static_state->wrap_t); |
| |
| if ((gallivm_debug & GALLIVM_DEBUG_PERF) && |
| !use_aos && util_format_fits_8unorm(bld.format_desc)) { |
| debug_printf("%s: using floating point linear filtering for %s\n", |
| __FUNCTION__, bld.format_desc->short_name); |
| debug_printf(" min_img %d mag_img %d mip %d wraps %d wrapt %d\n", |
| static_state->min_img_filter, |
| static_state->mag_img_filter, |
| static_state->min_mip_filter, |
| static_state->wrap_s, |
| static_state->wrap_t); |
| } |
| |
| lp_build_sample_common(&bld, unit, |
| &s, &t, &r, |
| derivs, lod_bias, explicit_lod, |
| &lod_ipart, &lod_fpart, |
| &ilevel0, &ilevel1); |
| |
| /* |
| * we only try 8-wide sampling with soa as it appears to |
| * be a loss with aos with AVX. |
| */ |
| if (num_quads == 1 || (mip_filter == PIPE_TEX_MIPFILTER_NONE && |
| !use_aos)) { |
| |
| if (num_quads > 1) { |
| LLVMValueRef index0 = lp_build_const_int32(gallivm, 0); |
| /* These parameters are the same for all quads */ |
| lod_ipart = LLVMBuildExtractElement(builder, lod_ipart, index0, ""); |
| ilevel0 = LLVMBuildExtractElement(builder, ilevel0, index0, ""); |
| } |
| if (use_aos) { |
| /* do sampling/filtering with fixed pt arithmetic */ |
| lp_build_sample_aos(&bld, unit, |
| s, t, r, |
| lod_ipart, lod_fpart, |
| ilevel0, ilevel1, |
| texel_out); |
| } |
| |
| else { |
| lp_build_sample_general(&bld, unit, |
| s, t, r, |
| lod_ipart, lod_fpart, |
| ilevel0, ilevel1, |
| texel_out); |
| } |
| } |
| else { |
| struct lp_build_if_state if_ctx; |
| LLVMValueRef notsame_levels, notsame; |
| LLVMValueRef index0 = lp_build_const_int32(gallivm, 0); |
| LLVMValueRef texels[4]; |
| LLVMValueRef texelout[4]; |
| unsigned j; |
| |
| texels[0] = lp_build_alloca(gallivm, bld.texel_bld.vec_type, "texr"); |
| texels[1] = lp_build_alloca(gallivm, bld.texel_bld.vec_type, "texg"); |
| texels[2] = lp_build_alloca(gallivm, bld.texel_bld.vec_type, "texb"); |
| texels[3] = lp_build_alloca(gallivm, bld.texel_bld.vec_type, "texa"); |
| |
| /* only build the if if we MAY split, otherwise always split */ |
| if (!use_aos) { |
| notsame = lp_build_extract_broadcast(gallivm, |
| bld.perquadi_bld.type, |
| bld.perquadi_bld.type, |
| ilevel0, index0); |
| notsame = lp_build_sub(&bld.perquadi_bld, ilevel0, notsame); |
| notsame_levels = lp_build_any_true_range(&bld.perquadi_bld, num_quads, |
| notsame); |
| if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) { |
| notsame = lp_build_extract_broadcast(gallivm, |
| bld.perquadi_bld.type, |
| bld.perquadi_bld.type, |
| ilevel1, index0); |
| notsame = lp_build_sub(&bld.perquadi_bld, ilevel1, notsame); |
| notsame = lp_build_any_true_range(&bld.perquadi_bld, num_quads, notsame); |
| notsame_levels = LLVMBuildOr(builder, notsame_levels, notsame, ""); |
| } |
| lp_build_if(&if_ctx, gallivm, notsame_levels); |
| } |
| |
| { |
| struct lp_build_sample_context bld4; |
| struct lp_type type4 = type; |
| unsigned i; |
| LLVMValueRef texelout4[4]; |
| LLVMValueRef texelouttmp[4][LP_MAX_VECTOR_LENGTH/16]; |
| |
| type4.length = 4; |
| |
| /* Setup our build context */ |
| memset(&bld4, 0, sizeof bld4); |
| bld4.gallivm = bld.gallivm; |
| bld4.static_state = bld.static_state; |
| bld4.dynamic_state = bld.dynamic_state; |
| bld4.format_desc = bld.format_desc; |
| bld4.dims = bld.dims; |
| bld4.row_stride_array = bld.row_stride_array; |
| bld4.img_stride_array = bld.img_stride_array; |
| bld4.data_array = bld.data_array; |
| bld4.int_size = bld.int_size; |
| |
| bld4.vector_width = lp_type_width(type4); |
| |
| bld4.float_type = lp_type_float(32); |
| bld4.int_type = lp_type_int(32); |
| bld4.coord_type = type4; |
| bld4.int_coord_type = lp_int_type(type4); |
| bld4.float_size_type = lp_type_float(32); |
| bld4.float_size_type.length = dims > 1 ? 4 : 1; |
| bld4.int_size_type = lp_int_type(bld4.float_size_type); |
| bld4.texel_type = type4; |
| bld4.perquadf_type = type4; |
| /* we want native vector size to be able to use our intrinsics */ |
| bld4.perquadf_type.length = 1; |
| bld4.perquadi_type = lp_int_type(bld4.perquadf_type); |
| |
| lp_build_context_init(&bld4.float_bld, gallivm, bld4.float_type); |
| lp_build_context_init(&bld4.float_vec_bld, gallivm, type4); |
| lp_build_context_init(&bld4.int_bld, gallivm, bld4.int_type); |
| lp_build_context_init(&bld4.coord_bld, gallivm, bld4.coord_type); |
| lp_build_context_init(&bld4.int_coord_bld, gallivm, bld4.int_coord_type); |
| lp_build_context_init(&bld4.int_size_bld, gallivm, bld4.int_size_type); |
| lp_build_context_init(&bld4.float_size_bld, gallivm, bld4.float_size_type); |
| lp_build_context_init(&bld4.texel_bld, gallivm, bld4.texel_type); |
| lp_build_context_init(&bld4.perquadf_bld, gallivm, bld4.perquadf_type); |
| lp_build_context_init(&bld4.perquadi_bld, gallivm, bld4.perquadi_type); |
| |
| for (i = 0; i < num_quads; i++) { |
| LLVMValueRef s4, t4, r4; |
| LLVMValueRef lod_iparts, lod_fparts = NULL; |
| LLVMValueRef ilevel0s, ilevel1s = NULL; |
| LLVMValueRef indexi = lp_build_const_int32(gallivm, i); |
| |
| s4 = lp_build_extract_range(gallivm, s, 4*i, 4); |
| t4 = lp_build_extract_range(gallivm, t, 4*i, 4); |
| r4 = lp_build_extract_range(gallivm, r, 4*i, 4); |
| lod_iparts = LLVMBuildExtractElement(builder, lod_ipart, indexi, ""); |
| ilevel0s = LLVMBuildExtractElement(builder, ilevel0, indexi, ""); |
| if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) { |
| ilevel1s = LLVMBuildExtractElement(builder, ilevel1, indexi, ""); |
| lod_fparts = LLVMBuildExtractElement(builder, lod_fpart, indexi, ""); |
| } |
| |
| if (use_aos) { |
| /* do sampling/filtering with fixed pt arithmetic */ |
| lp_build_sample_aos(&bld4, unit, |
| s4, t4, r4, |
| lod_iparts, lod_fparts, |
| ilevel0s, ilevel1s, |
| texelout4); |
| } |
| |
| else { |
| lp_build_sample_general(&bld4, unit, |
| s4, t4, r4, |
| lod_iparts, lod_fparts, |
| ilevel0s, ilevel1s, |
| texelout4); |
| } |
| for (j = 0; j < 4; j++) { |
| texelouttmp[j][i] = texelout4[j]; |
| } |
| } |
| for (j = 0; j < 4; j++) { |
| texelout[j] = lp_build_concat(gallivm, texelouttmp[j], type4, num_quads); |
| LLVMBuildStore(builder, texelout[j], texels[j]); |
| } |
| } |
| if (!use_aos) { |
| LLVMValueRef ilevel0s, lod_iparts, ilevel1s = NULL; |
| |
| lp_build_else(&if_ctx); |
| |
| /* These parameters are the same for all quads */ |
| lod_iparts = LLVMBuildExtractElement(builder, lod_ipart, index0, ""); |
| ilevel0s = LLVMBuildExtractElement(builder, ilevel0, index0, ""); |
| if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) { |
| ilevel1s = LLVMBuildExtractElement(builder, ilevel1, index0, ""); |
| } |
| |
| if (use_aos) { |
| /* do sampling/filtering with fixed pt arithmetic */ |
| lp_build_sample_aos(&bld, unit, |
| s, t, r, |
| lod_iparts, lod_fpart, |
| ilevel0s, ilevel1s, |
| texelout); |
| } |
| |
| else { |
| lp_build_sample_general(&bld, unit, |
| s, t, r, |
| lod_iparts, lod_fpart, |
| ilevel0s, ilevel1s, |
| texelout); |
| } |
| for (j = 0; j < 4; j++) { |
| LLVMBuildStore(builder, texelout[j], texels[j]); |
| } |
| |
| lp_build_endif(&if_ctx); |
| } |
| |
| for (j = 0; j < 4; j++) { |
| texel_out[j] = LLVMBuildLoad(builder, texels[j], ""); |
| } |
| } |
| } |
| |
| lp_build_sample_compare(&bld, r, texel_out); |
| |
| apply_sampler_swizzle(&bld, texel_out); |
| } |
| |
| void |
| lp_build_size_query_soa(struct gallivm_state *gallivm, |
| const struct lp_sampler_static_state *static_state, |
| struct lp_sampler_dynamic_state *dynamic_state, |
| struct lp_type int_type, |
| unsigned unit, |
| LLVMValueRef explicit_lod, |
| LLVMValueRef *sizes_out) |
| { |
| LLVMValueRef lod; |
| LLVMValueRef size; |
| int dims, i; |
| struct lp_build_context bld_int_vec; |
| |
| switch (static_state->target) { |
| case PIPE_TEXTURE_1D: |
| case PIPE_BUFFER: |
| dims = 1; |
| break; |
| case PIPE_TEXTURE_2D: |
| case PIPE_TEXTURE_CUBE: |
| case PIPE_TEXTURE_RECT: |
| dims = 2; |
| break; |
| case PIPE_TEXTURE_3D: |
| dims = 3; |
| break; |
| |
| default: |
| assert(0); |
| return; |
| } |
| |
| assert(!int_type.floating); |
| |
| lp_build_context_init(&bld_int_vec, gallivm, lp_type_int_vec(32, 128)); |
| |
| if (explicit_lod) { |
| LLVMValueRef first_level; |
| lod = LLVMBuildExtractElement(gallivm->builder, explicit_lod, lp_build_const_int32(gallivm, 0), ""); |
| first_level = dynamic_state->first_level(dynamic_state, gallivm, unit); |
| lod = lp_build_broadcast_scalar(&bld_int_vec, |
| LLVMBuildAdd(gallivm->builder, lod, first_level, "lod")); |
| |
| } else { |
| lod = bld_int_vec.zero; |
| } |
| |
| size = bld_int_vec.undef; |
| |
| size = LLVMBuildInsertElement(gallivm->builder, size, |
| dynamic_state->width(dynamic_state, gallivm, unit), |
| lp_build_const_int32(gallivm, 0), ""); |
| |
| if (dims >= 2) { |
| size = LLVMBuildInsertElement(gallivm->builder, size, |
| dynamic_state->height(dynamic_state, gallivm, unit), |
| lp_build_const_int32(gallivm, 1), ""); |
| } |
| |
| if (dims >= 3) { |
| size = LLVMBuildInsertElement(gallivm->builder, size, |
| dynamic_state->depth(dynamic_state, gallivm, unit), |
| lp_build_const_int32(gallivm, 2), ""); |
| } |
| |
| size = lp_build_minify(&bld_int_vec, size, lod); |
| |
| for (i=0; i < dims; i++) { |
| sizes_out[i] = lp_build_extract_broadcast(gallivm, bld_int_vec.type, int_type, |
| size, |
| lp_build_const_int32(gallivm, i)); |
| } |
| } |
