X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fgallium%2Fauxiliary%2Fgallivm%2Flp_bld_sample_soa.c;h=e8c04d1e6c53343a9a9503202b1dcd49b378dcf4;hb=5ae31d7e1d3d51c7843571c63aa228f8ca9b879f;hp=53cc0c5f34541c7c897a7e4509247ef1283fff72;hpb=0072acd447dc6be652e63752e50215c3105322c8;p=mesa.git diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c index 53cc0c5f345..e8c04d1e6c5 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c @@ -35,11 +35,14 @@ #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 "util/u_format_rgb9e5.h" #include "lp_bld_debug.h" #include "lp_bld_type.h" #include "lp_bld_const.h" @@ -56,6 +59,7 @@ #include "lp_bld_sample_aos.h" #include "lp_bld_struct.h" #include "lp_bld_quad.h" +#include "lp_bld_pack.h" /** @@ -69,7 +73,6 @@ */ static void lp_build_sample_texel_soa(struct lp_build_sample_context *bld, - unsigned unit, LLVMValueRef width, LLVMValueRef height, LLVMValueRef depth, @@ -79,11 +82,13 @@ lp_build_sample_texel_soa(struct lp_build_sample_context *bld, LLVMValueRef y_stride, LLVMValueRef z_stride, LLVMValueRef data_ptr, + LLVMValueRef mipoffsets, LLVMValueRef texel_out[4]) { - const struct lp_sampler_static_state *static_state = bld->static_state; + const struct lp_static_sampler_state *static_state = bld->static_sampler_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; @@ -95,7 +100,7 @@ lp_build_sample_texel_soa(struct lp_build_sample_context *bld, 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(bld->builder, b1, b2, "b1_or_b2"); + use_border = LLVMBuildOr(builder, b1, b2, "b1_or_b2"); } if (dims >= 2 && @@ -106,11 +111,11 @@ lp_build_sample_texel_soa(struct lp_build_sample_context *bld, 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(bld->builder, use_border, b1, "ub_or_b1"); - use_border = LLVMBuildOr(bld->builder, use_border, b2, "ub_or_b2"); + use_border = LLVMBuildOr(builder, use_border, b1, "ub_or_b1"); + use_border = LLVMBuildOr(builder, use_border, b2, "ub_or_b2"); } else { - use_border = LLVMBuildOr(bld->builder, b1, b2, "b1_or_b2"); + use_border = LLVMBuildOr(builder, b1, b2, "b1_or_b2"); } } @@ -122,11 +127,11 @@ lp_build_sample_texel_soa(struct lp_build_sample_context *bld, 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(bld->builder, use_border, b1, "ub_or_b1"); - use_border = LLVMBuildOr(bld->builder, use_border, b2, "ub_or_b2"); + use_border = LLVMBuildOr(builder, use_border, b1, "ub_or_b1"); + use_border = LLVMBuildOr(builder, use_border, b2, "ub_or_b2"); } else { - use_border = LLVMBuildOr(bld->builder, b1, b2, "b1_or_b2"); + use_border = LLVMBuildOr(builder, b1, b2, "b1_or_b2"); } } @@ -135,6 +140,9 @@ lp_build_sample_texel_soa(struct lp_build_sample_context *bld, bld->format_desc, x, y, z, y_stride, z_stride, &offset, &i, &j); + if (mipoffsets) { + offset = lp_build_add(&bld->int_coord_bld, offset, mipoffsets); + } if (use_border) { /* If we can sample the border color, it means that texcoords may @@ -148,7 +156,7 @@ lp_build_sample_texel_soa(struct lp_build_sample_context *bld, offset = lp_build_andnot(&bld->int_coord_bld, offset, use_border); } - lp_build_fetch_rgba_soa(bld->builder, + lp_build_fetch_rgba_soa(bld->gallivm, bld->format_desc, bld->texel_type, data_ptr, offset, @@ -171,23 +179,39 @@ lp_build_sample_texel_soa(struct lp_build_sample_context *bld, */ 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->builder, unit); + /* select texel color or border color depending on use_border. */ + const struct util_format_description *format_desc = bld->format_desc; int chan; + struct lp_type border_type = bld->texel_type; + border_type.length = 4; + /* + * Only replace channels which are actually present. The others should + * get optimized away eventually by sampler_view swizzle anyway but it's + * easier too. + */ for (chan = 0; chan < 4; chan++) { - LLVMValueRef border_chan = - lp_build_array_get(bld->builder, border_color_ptr, - lp_build_const_int32(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]); + unsigned chan_s; + /* reverse-map channel... */ + for (chan_s = 0; chan_s < 4; chan_s++) { + if (chan_s == format_desc->swizzle[chan]) { + break; + } + } + if (chan_s <= 3) { + /* use the already clamped color */ + LLVMValueRef idx = lp_build_const_int32(bld->gallivm, chan); + LLVMValueRef border_chan; + + border_chan = lp_build_extract_broadcast(bld->gallivm, + border_type, + bld->texel_type, + bld->border_color_clamped, + idx); + texel_out[chan] = lp_build_select(&bld->texel_bld, use_border, + border_chan, texel_out[chan]); + } } } - - apply_sampler_swizzle(bld, texel_out); } @@ -205,7 +229,7 @@ lp_build_coord_mirror(struct lp_build_sample_context *bld, lp_build_ifloor_fract(coord_bld, coord, &flr, &fract); /* isOdd = flr & 1 */ - isOdd = LLVMBuildAnd(bld->builder, flr, int_coord_bld->one, ""); + 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); @@ -220,6 +244,41 @@ lp_build_coord_mirror(struct lp_build_sample_context *bld, } +/** + * 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 @@ -231,6 +290,7 @@ lp_build_sample_wrap_linear(struct lp_build_sample_context *bld, LLVMValueRef coord, LLVMValueRef length, LLVMValueRef length_f, + LLVMValueRef offset, boolean is_pot, unsigned wrap_mode, LLVMValueRef *x0_out, @@ -239,42 +299,55 @@ lp_build_sample_wrap_linear(struct lp_build_sample_context *bld, { 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(coord_bld->type, 0.5); + 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: - /* 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); - /* repeat wrap */ 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); + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + coord = lp_build_add(coord_bld, coord, offset); + } + /* 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 = LLVMBuildAnd(bld->builder, coord0, length_minus_one, ""); - coord1 = LLVMBuildAnd(bld->builder, coord1, length_minus_one, ""); + /* repeat wrap */ + coord0 = LLVMBuildAnd(builder, coord0, length_minus_one, ""); + coord1 = LLVMBuildAnd(builder, coord1, length_minus_one, ""); } else { - /* Add a bias to the texcoord to handle negative coords */ - LLVMValueRef bias = lp_build_mul_imm(int_coord_bld, length, 1024); LLVMValueRef mask; - coord0 = LLVMBuildAdd(bld->builder, coord0, bias, ""); - coord0 = LLVMBuildURem(bld->builder, coord0, length, ""); - mask = lp_build_compare(bld->builder, int_coord_bld->type, + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + offset = lp_build_div(coord_bld, offset, length_f); + coord = lp_build_add(coord_bld, coord, offset); + } + 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(bld->builder, - lp_build_add(int_coord_bld, coord0, int_coord_bld->one), - mask, ""); + 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) { + if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + coord = lp_build_add(coord_bld, coord, offset); + } /* clamp to [0, length] */ coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, length_f); @@ -291,10 +364,15 @@ lp_build_sample_wrap_linear(struct lp_build_sample_context *bld, struct lp_build_context abs_coord_bld = bld->coord_bld; abs_coord_bld.type.sign = FALSE; - if (bld->static_state->normalized_coords) { + if (bld->static_sampler_state->normalized_coords) { /* mul by tex size */ coord = lp_build_mul(coord_bld, coord, length_f); } + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + coord = lp_build_add(coord_bld, coord, offset); + } + /* clamp to length max */ coord = lp_build_min(coord_bld, coord, length_f); /* subtract 0.5 */ @@ -310,20 +388,20 @@ lp_build_sample_wrap_linear(struct lp_build_sample_context *bld, } 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(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); + if (bld->static_sampler_state->normalized_coords) { + /* scale coord to length */ + coord = lp_build_mul(coord_bld, coord, length_f); + } + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + coord = lp_build_add(coord_bld, coord, offset); } + /* was: clamp to [-0.5, length + 0.5], then sub 0.5 */ + /* can skip clamp (though might not work for very large coord values */ + 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_REPEAT: @@ -333,6 +411,10 @@ lp_build_sample_wrap_linear(struct lp_build_sample_context *bld, /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); coord = lp_build_sub(coord_bld, coord, half); + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + coord = lp_build_add(coord_bld, coord, offset); + } /* convert to int, compute lerp weight */ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); @@ -345,12 +427,15 @@ lp_build_sample_wrap_linear(struct lp_build_sample_context *bld, break; case PIPE_TEX_WRAP_MIRROR_CLAMP: - coord = lp_build_abs(coord_bld, coord); - - if (bld->static_state->normalized_coords) { + if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + coord = lp_build_add(coord_bld, coord, offset); + } + coord = lp_build_abs(coord_bld, coord); /* clamp to [0, length] */ coord = lp_build_min(coord_bld, coord, length_f); @@ -364,42 +449,50 @@ lp_build_sample_wrap_linear(struct lp_build_sample_context *bld, 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) { + if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + coord = lp_build_add(coord_bld, coord, offset); + } + coord = lp_build_abs(coord_bld, coord); - /* 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); - + /* 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_MIRROR_CLAMP_TO_BORDER: { - coord = lp_build_abs(coord_bld, coord); - - if (bld->static_state->normalized_coords) { + if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + coord = lp_build_add(coord_bld, coord, offset); + } + coord = lp_build_abs(coord_bld, coord); /* was: clamp to [-0.5, length + 0.5] then sub 0.5 */ - /* skip -0.5 clamp (always positive), do sub first */ + /* skip clamp - always positive, and other side + only potentially matters for very large coords */ 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); @@ -424,6 +517,8 @@ lp_build_sample_wrap_linear(struct lp_build_sample_context *bld, * 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 length_f the texture size along one dimension, as float vector + * \param offset texel offset 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 */ @@ -432,31 +527,42 @@ lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld, LLVMValueRef coord, LLVMValueRef length, LLVMValueRef length_f, + LLVMValueRef offset, 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: - coord = lp_build_mul(coord_bld, coord, length_f); - icoord = lp_build_ifloor(coord_bld, coord); - if (is_pot) - icoord = LLVMBuildAnd(bld->builder, icoord, length_minus_one, ""); + if (is_pot) { + coord = lp_build_mul(coord_bld, coord, length_f); + icoord = lp_build_ifloor(coord_bld, coord); + if (offset) { + icoord = lp_build_add(int_coord_bld, icoord, offset); + } + icoord = LLVMBuildAnd(builder, icoord, length_minus_one, ""); + } else { - /* Add a bias to the texcoord to handle negative coords */ - LLVMValueRef bias = lp_build_mul_imm(int_coord_bld, length, 1024); - icoord = LLVMBuildAdd(bld->builder, icoord, bias, ""); - icoord = LLVMBuildURem(bld->builder, icoord, length, ""); + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + offset = lp_build_div(coord_bld, offset, length_f); + coord = lp_build_add(coord_bld, coord, offset); + } + /* 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) { + if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } @@ -464,6 +570,9 @@ lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld, /* floor */ /* use itrunc instead since we clamp to 0 anyway */ icoord = lp_build_itrunc(coord_bld, coord); + if (offset) { + icoord = lp_build_add(int_coord_bld, icoord, offset); + } /* clamp to [0, length - 1]. */ icoord = lp_build_clamp(int_coord_bld, icoord, int_coord_bld->zero, @@ -471,30 +580,28 @@ lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld, break; case PIPE_TEX_WRAP_CLAMP_TO_BORDER: - /* Note: this is the same as CLAMP_TO_EDGE, except min = -min */ - { - 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); + if (bld->static_sampler_state->normalized_coords) { + /* scale coord to length */ + coord = lp_build_mul(coord_bld, coord, length_f); + } + /* no clamp necessary, border masking will handle this */ + icoord = lp_build_ifloor(coord_bld, coord); + if (offset) { + icoord = lp_build_add(int_coord_bld, icoord, offset); } break; case PIPE_TEX_WRAP_MIRROR_REPEAT: + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + offset = lp_build_div(coord_bld, offset, length_f); + coord = lp_build_add(coord_bld, coord, offset); + } /* compute mirror function */ coord = lp_build_coord_mirror(bld, coord); /* scale coord to length */ - assert(bld->static_state->normalized_coords); + assert(bld->static_sampler_state->normalized_coords); coord = lp_build_mul(coord_bld, coord, length_f); /* itrunc == ifloor here */ @@ -506,12 +613,15 @@ lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld, 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) { + if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + coord = lp_build_add(coord_bld, coord, offset); + } + coord = lp_build_abs(coord_bld, coord); /* itrunc == ifloor here */ icoord = lp_build_itrunc(coord_bld, coord); @@ -521,18 +631,18 @@ lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld, break; case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER: - coord = lp_build_abs(coord_bld, coord); - - if (bld->static_state->normalized_coords) { + if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } + if (offset) { + offset = lp_build_int_to_float(coord_bld, offset); + coord = lp_build_add(coord_bld, coord, offset); + } + coord = lp_build_abs(coord_bld, coord); /* 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: @@ -544,20 +654,54 @@ lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld, } +/** + * Do shadow test/comparison. + * \param p shadow ref value + * \param texel the texel to compare against + */ +static LLVMValueRef +lp_build_sample_comparefunc(struct lp_build_sample_context *bld, + LLVMValueRef p, + LLVMValueRef texel) +{ + struct lp_build_context *texel_bld = &bld->texel_bld; + LLVMValueRef res; + + if (0) { + //lp_build_print_value(bld->gallivm, "shadow cmp coord", p); + lp_build_print_value(bld->gallivm, "shadow cmp texel", texel); + } + + /* result = (p FUNC texel) ? 1 : 0 */ + /* + * honor d3d10 floating point rules here, which state that comparisons + * are ordered except NOT_EQUAL which is unordered. + */ + if (bld->static_sampler_state->compare_func != PIPE_FUNC_NOTEQUAL) { + res = lp_build_cmp_ordered(texel_bld, bld->static_sampler_state->compare_func, + p, texel); + } + else { + res = lp_build_cmp(texel_bld, bld->static_sampler_state->compare_func, + p, texel); + } + return res; +} + + /** * 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 mipoffsets, + LLVMValueRef *coords, + const LLVMValueRef *offsets, LLVMValueRef colors_out[4]) { const unsigned dims = bld->dims; @@ -568,10 +712,10 @@ lp_build_sample_image_nearest(struct lp_build_sample_context *bld, LLVMValueRef flt_width_vec; LLVMValueRef flt_height_vec; LLVMValueRef flt_depth_vec; - LLVMValueRef x, y, z; + LLVMValueRef x, y = NULL, z = NULL; lp_build_extract_image_sizes(bld, - bld->int_size_type, + &bld->int_size_bld, bld->int_coord_type, size, &width_vec, &height_vec, &depth_vec); @@ -579,7 +723,7 @@ lp_build_sample_image_nearest(struct lp_build_sample_context *bld, flt_size = lp_build_int_to_float(&bld->float_size_bld, size); lp_build_extract_image_sizes(bld, - bld->float_size_type, + &bld->float_size_bld, bld->coord_type, flt_size, &flt_width_vec, &flt_height_vec, &flt_depth_vec); @@ -587,61 +731,124 @@ lp_build_sample_image_nearest(struct lp_build_sample_context *bld, /* * 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); + x = lp_build_sample_wrap_nearest(bld, coords[0], width_vec, + flt_width_vec, offsets[0], + bld->static_texture_state->pot_width, + bld->static_sampler_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); + y = lp_build_sample_wrap_nearest(bld, coords[1], height_vec, + flt_height_vec, offsets[1], + bld->static_texture_state->pot_height, + bld->static_sampler_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); + z = lp_build_sample_wrap_nearest(bld, coords[2], depth_vec, + flt_depth_vec, offsets[2], + bld->static_texture_state->pot_depth, + bld->static_sampler_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; + if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE || + bld->static_texture_state->target == PIPE_TEXTURE_1D_ARRAY || + bld->static_texture_state->target == PIPE_TEXTURE_2D_ARRAY) { + z = coords[2]; + lp_build_name(z, "tex.z.layer"); } /* * Get texture colors. */ - lp_build_sample_texel_soa(bld, unit, + lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, x, y, z, row_stride_vec, img_stride_vec, - data_ptr, colors_out); + data_ptr, mipoffsets, colors_out); + + if (bld->static_sampler_state->compare_mode != PIPE_TEX_COMPARE_NONE) { + LLVMValueRef cmpval; + cmpval = lp_build_sample_comparefunc(bld, coords[4], colors_out[0]); + /* this is really just a AND 1.0, cmpval but llvm is clever enough */ + colors_out[0] = lp_build_select(&bld->texel_bld, cmpval, + bld->texel_bld.one, bld->texel_bld.zero); + colors_out[1] = colors_out[2] = colors_out[3] = colors_out[0]; + } + +} + + +/** + * Like a lerp, but inputs are 0/~0 masks, so can simplify slightly. + */ +static LLVMValueRef +lp_build_masklerp(struct lp_build_context *bld, + LLVMValueRef weight, + LLVMValueRef mask0, + LLVMValueRef mask1) +{ + struct gallivm_state *gallivm = bld->gallivm; + LLVMBuilderRef builder = gallivm->builder; + LLVMValueRef weight2; + + weight2 = lp_build_sub(bld, bld->one, weight); + weight = LLVMBuildBitCast(builder, weight, + lp_build_int_vec_type(gallivm, bld->type), ""); + weight2 = LLVMBuildBitCast(builder, weight2, + lp_build_int_vec_type(gallivm, bld->type), ""); + weight = LLVMBuildAnd(builder, weight, mask1, ""); + weight2 = LLVMBuildAnd(builder, weight2, mask0, ""); + weight = LLVMBuildBitCast(builder, weight, bld->vec_type, ""); + weight2 = LLVMBuildBitCast(builder, weight2, bld->vec_type, ""); + return lp_build_add(bld, weight, weight2); +} + +/** + * Like a 2d lerp, but inputs are 0/~0 masks, so can simplify slightly. + */ +static LLVMValueRef +lp_build_masklerp2d(struct lp_build_context *bld, + LLVMValueRef weight0, + LLVMValueRef weight1, + LLVMValueRef mask00, + LLVMValueRef mask01, + LLVMValueRef mask10, + LLVMValueRef mask11) +{ + LLVMValueRef val0 = lp_build_masklerp(bld, weight0, mask00, mask01); + LLVMValueRef val1 = lp_build_masklerp(bld, weight0, mask10, mask11); + return lp_build_lerp(bld, weight1, val0, val1, 0); } +/* + * this is a bit excessive code for something OpenGL just recommends + * but does not require. + */ +#define ACCURATE_CUBE_CORNERS 1 /** * Generate code to sample a mipmap level with linear filtering. * If sampling a cube texture, r = cube face in [0,5]. + * If linear_mask is present, only pixels having their mask set + * will receive linear filtering, the rest will use nearest. */ static void lp_build_sample_image_linear(struct lp_build_sample_context *bld, - unsigned unit, LLVMValueRef size, + LLVMValueRef linear_mask, LLVMValueRef row_stride_vec, LLVMValueRef img_stride_vec, LLVMValueRef data_ptr, - LLVMValueRef s, - LLVMValueRef t, - LLVMValueRef r, + LLVMValueRef mipoffsets, + LLVMValueRef *coords, + const LLVMValueRef *offsets, LLVMValueRef colors_out[4]) { + LLVMBuilderRef builder = bld->gallivm->builder; + struct lp_build_context *ivec_bld = &bld->int_coord_bld; + struct lp_build_context *coord_bld = &bld->coord_bld; const unsigned dims = bld->dims; LLVMValueRef width_vec; LLVMValueRef height_vec; @@ -650,13 +857,23 @@ lp_build_sample_image_linear(struct lp_build_sample_context *bld, 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 fall_off[4], have_corners; + LLVMValueRef z1 = NULL; + LLVMValueRef z00 = NULL, z01 = NULL, z10 = NULL, z11 = NULL; + LLVMValueRef x00 = NULL, x01 = NULL, x10 = NULL, x11 = NULL; + LLVMValueRef y00 = NULL, y01 = NULL, y10 = NULL, y11 = NULL; + LLVMValueRef s_fpart, t_fpart = NULL, r_fpart = NULL; + LLVMValueRef xs[4], ys[4], zs[4]; LLVMValueRef neighbors[2][2][4]; - int chan; + int chan, texel_index; + boolean seamless_cube_filter, accurate_cube_corners; + + seamless_cube_filter = bld->static_texture_state->target == PIPE_TEXTURE_CUBE && + bld->static_sampler_state->seamless_cube_map; + accurate_cube_corners = ACCURATE_CUBE_CORNERS && seamless_cube_filter; lp_build_extract_image_sizes(bld, - bld->int_size_type, + &bld->int_size_bld, bld->int_coord_type, size, &width_vec, &height_vec, &depth_vec); @@ -664,7 +881,7 @@ lp_build_sample_image_linear(struct lp_build_sample_context *bld, flt_size = lp_build_int_to_float(&bld->float_size_bld, size); lp_build_extract_image_sizes(bld, - bld->float_size_type, + &bld->float_size_bld, bld->coord_type, flt_size, &flt_width_vec, &flt_height_vec, &flt_depth_vec); @@ -672,90 +889,425 @@ lp_build_sample_image_linear(struct lp_build_sample_context *bld, /* * 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 (!seamless_cube_filter) { + lp_build_sample_wrap_linear(bld, coords[0], width_vec, + flt_width_vec, offsets[0], + bld->static_texture_state->pot_width, + bld->static_sampler_state->wrap_s, + &x00, &x01, &s_fpart); + lp_build_name(x00, "tex.x0.wrapped"); + lp_build_name(x01, "tex.x1.wrapped"); + x10 = x00; + x11 = x01; - 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; + if (dims >= 2) { + lp_build_sample_wrap_linear(bld, coords[1], height_vec, + flt_height_vec, offsets[1], + bld->static_texture_state->pot_height, + bld->static_sampler_state->wrap_t, + &y00, &y10, &t_fpart); + lp_build_name(y00, "tex.y0.wrapped"); + lp_build_name(y10, "tex.y1.wrapped"); + y01 = y00; + y11 = y10; + + if (dims == 3) { + lp_build_sample_wrap_linear(bld, coords[2], depth_vec, + flt_depth_vec, offsets[2], + bld->static_texture_state->pot_depth, + bld->static_sampler_state->wrap_r, + &z00, &z1, &r_fpart); + z01 = z10 = z11 = z00; + lp_build_name(z00, "tex.z0.wrapped"); + lp_build_name(z1, "tex.z1.wrapped"); + } } - else { - z0 = z1 = NULL; - r_fpart = NULL; + if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE || + bld->static_texture_state->target == PIPE_TEXTURE_1D_ARRAY || + bld->static_texture_state->target == PIPE_TEXTURE_2D_ARRAY) { + z00 = z01 = z10 = z11 = z1 = coords[2]; /* cube face or layer */ + lp_build_name(z00, "tex.z0.layer"); + lp_build_name(z1, "tex.z1.layer"); } } else { - y0 = y1 = t_fpart = NULL; - z0 = z1 = r_fpart = NULL; + struct lp_build_if_state edge_if; + LLVMTypeRef int1t; + LLVMValueRef new_faces[4], new_xcoords[4][2], new_ycoords[4][2]; + LLVMValueRef coord, have_edge, have_corner; + LLVMValueRef fall_off_ym_notxm, fall_off_ym_notxp, fall_off_x, fall_off_y; + LLVMValueRef fall_off_yp_notxm, fall_off_yp_notxp; + LLVMValueRef x0, x1, y0, y1, y0_clamped, y1_clamped; + LLVMValueRef face = coords[2]; + LLVMValueRef half = lp_build_const_vec(bld->gallivm, coord_bld->type, 0.5f); + LLVMValueRef length_minus_one = lp_build_sub(ivec_bld, width_vec, ivec_bld->one); + /* XXX drop height calcs. Could (should) do this without seamless filtering too */ + height_vec = width_vec; + flt_height_vec = flt_width_vec; + + /* XXX the overflow logic is actually sort of duplicated with trilinear, + * since an overflow in one mip should also have a corresponding overflow + * in another. + */ + /* should always have normalized coords, and offsets are undefined */ + assert(bld->static_sampler_state->normalized_coords); + coord = lp_build_mul(coord_bld, coords[0], flt_width_vec); + /* instead of clamp, build mask if overflowed */ + coord = lp_build_sub(coord_bld, coord, half); + /* convert to int, compute lerp weight */ + /* not ideal with AVX (and no AVX2) */ + lp_build_ifloor_fract(coord_bld, coord, &x0, &s_fpart); + x1 = lp_build_add(ivec_bld, x0, ivec_bld->one); + coord = lp_build_mul(coord_bld, coords[1], flt_height_vec); + coord = lp_build_sub(coord_bld, coord, half); + lp_build_ifloor_fract(coord_bld, coord, &y0, &t_fpart); + y1 = lp_build_add(ivec_bld, y0, ivec_bld->one); + + fall_off[0] = lp_build_cmp(ivec_bld, PIPE_FUNC_LESS, x0, ivec_bld->zero); + fall_off[1] = lp_build_cmp(ivec_bld, PIPE_FUNC_GREATER, x1, length_minus_one); + fall_off[2] = lp_build_cmp(ivec_bld, PIPE_FUNC_LESS, y0, ivec_bld->zero); + fall_off[3] = lp_build_cmp(ivec_bld, PIPE_FUNC_GREATER, y1, length_minus_one); + + fall_off_x = lp_build_or(ivec_bld, fall_off[0], fall_off[1]); + fall_off_y = lp_build_or(ivec_bld, fall_off[2], fall_off[3]); + have_edge = lp_build_or(ivec_bld, fall_off_x, fall_off_y); + have_edge = lp_build_any_true_range(ivec_bld, ivec_bld->type.length, have_edge); + + /* needed for accurate corner filtering branch later, rely on 0 init */ + int1t = LLVMInt1TypeInContext(bld->gallivm->context); + have_corners = lp_build_alloca(bld->gallivm, int1t, "have_corner"); + + for (texel_index = 0; texel_index < 4; texel_index++) { + xs[texel_index] = lp_build_alloca(bld->gallivm, ivec_bld->vec_type, "xs"); + ys[texel_index] = lp_build_alloca(bld->gallivm, ivec_bld->vec_type, "ys"); + zs[texel_index] = lp_build_alloca(bld->gallivm, ivec_bld->vec_type, "zs"); + } + + lp_build_if(&edge_if, bld->gallivm, have_edge); + + have_corner = lp_build_and(ivec_bld, fall_off_x, fall_off_y); + have_corner = lp_build_any_true_range(ivec_bld, ivec_bld->type.length, have_corner); + LLVMBuildStore(builder, have_corner, have_corners); + + /* + * Need to feed clamped values here for cheap corner handling, + * but only for y coord (as when falling off both edges we only + * fall off the x one) - this should be sufficient. + */ + y0_clamped = lp_build_max(ivec_bld, y0, ivec_bld->zero); + y1_clamped = lp_build_min(ivec_bld, y1, length_minus_one); + + /* + * Get all possible new coords. + */ + lp_build_cube_new_coords(ivec_bld, face, + x0, x1, y0_clamped, y1_clamped, + length_minus_one, + new_faces, new_xcoords, new_ycoords); + + /* handle fall off x-, x+ direction */ + /* determine new coords, face (not both fall_off vars can be true at same time) */ + x00 = lp_build_select(ivec_bld, fall_off[0], new_xcoords[0][0], x0); + y00 = lp_build_select(ivec_bld, fall_off[0], new_ycoords[0][0], y0_clamped); + x10 = lp_build_select(ivec_bld, fall_off[0], new_xcoords[0][1], x0); + y10 = lp_build_select(ivec_bld, fall_off[0], new_ycoords[0][1], y1_clamped); + x01 = lp_build_select(ivec_bld, fall_off[1], new_xcoords[1][0], x1); + y01 = lp_build_select(ivec_bld, fall_off[1], new_ycoords[1][0], y0_clamped); + x11 = lp_build_select(ivec_bld, fall_off[1], new_xcoords[1][1], x1); + y11 = lp_build_select(ivec_bld, fall_off[1], new_ycoords[1][1], y1_clamped); + + z00 = z10 = lp_build_select(ivec_bld, fall_off[0], new_faces[0], face); + z01 = z11 = lp_build_select(ivec_bld, fall_off[1], new_faces[1], face); + + /* handle fall off y-, y+ direction */ + /* + * Cheap corner logic: just hack up things so a texel doesn't fall + * off both sides (which means filter weights will be wrong but we'll only + * use valid texels in the filter). + * This means however (y) coords must additionally be clamped (see above). + * This corner handling should be fully OpenGL (but not d3d10) compliant. + */ + fall_off_ym_notxm = lp_build_andnot(ivec_bld, fall_off[2], fall_off[0]); + fall_off_ym_notxp = lp_build_andnot(ivec_bld, fall_off[2], fall_off[1]); + fall_off_yp_notxm = lp_build_andnot(ivec_bld, fall_off[3], fall_off[0]); + fall_off_yp_notxp = lp_build_andnot(ivec_bld, fall_off[3], fall_off[1]); + + x00 = lp_build_select(ivec_bld, fall_off_ym_notxm, new_xcoords[2][0], x00); + y00 = lp_build_select(ivec_bld, fall_off_ym_notxm, new_ycoords[2][0], y00); + x01 = lp_build_select(ivec_bld, fall_off_ym_notxp, new_xcoords[2][1], x01); + y01 = lp_build_select(ivec_bld, fall_off_ym_notxp, new_ycoords[2][1], y01); + x10 = lp_build_select(ivec_bld, fall_off_yp_notxm, new_xcoords[3][0], x10); + y10 = lp_build_select(ivec_bld, fall_off_yp_notxm, new_ycoords[3][0], y10); + x11 = lp_build_select(ivec_bld, fall_off_yp_notxp, new_xcoords[3][1], x11); + y11 = lp_build_select(ivec_bld, fall_off_yp_notxp, new_ycoords[3][1], y11); + + z00 = lp_build_select(ivec_bld, fall_off_ym_notxm, new_faces[2], z00); + z01 = lp_build_select(ivec_bld, fall_off_ym_notxp, new_faces[2], z01); + z10 = lp_build_select(ivec_bld, fall_off_yp_notxm, new_faces[3], z10); + z11 = lp_build_select(ivec_bld, fall_off_yp_notxp, new_faces[3], z11); + + LLVMBuildStore(builder, x00, xs[0]); + LLVMBuildStore(builder, x01, xs[1]); + LLVMBuildStore(builder, x10, xs[2]); + LLVMBuildStore(builder, x11, xs[3]); + LLVMBuildStore(builder, y00, ys[0]); + LLVMBuildStore(builder, y01, ys[1]); + LLVMBuildStore(builder, y10, ys[2]); + LLVMBuildStore(builder, y11, ys[3]); + LLVMBuildStore(builder, z00, zs[0]); + LLVMBuildStore(builder, z01, zs[1]); + LLVMBuildStore(builder, z10, zs[2]); + LLVMBuildStore(builder, z11, zs[3]); + + lp_build_else(&edge_if); + + LLVMBuildStore(builder, x0, xs[0]); + LLVMBuildStore(builder, x1, xs[1]); + LLVMBuildStore(builder, x0, xs[2]); + LLVMBuildStore(builder, x1, xs[3]); + LLVMBuildStore(builder, y0, ys[0]); + LLVMBuildStore(builder, y0, ys[1]); + LLVMBuildStore(builder, y1, ys[2]); + LLVMBuildStore(builder, y1, ys[3]); + LLVMBuildStore(builder, face, zs[0]); + LLVMBuildStore(builder, face, zs[1]); + LLVMBuildStore(builder, face, zs[2]); + LLVMBuildStore(builder, face, zs[3]); + + lp_build_endif(&edge_if); + + x00 = LLVMBuildLoad(builder, xs[0], ""); + x01 = LLVMBuildLoad(builder, xs[1], ""); + x10 = LLVMBuildLoad(builder, xs[2], ""); + x11 = LLVMBuildLoad(builder, xs[3], ""); + y00 = LLVMBuildLoad(builder, ys[0], ""); + y01 = LLVMBuildLoad(builder, ys[1], ""); + y10 = LLVMBuildLoad(builder, ys[2], ""); + y11 = LLVMBuildLoad(builder, ys[3], ""); + z00 = LLVMBuildLoad(builder, zs[0], ""); + z01 = LLVMBuildLoad(builder, zs[1], ""); + z10 = LLVMBuildLoad(builder, zs[2], ""); + z11 = LLVMBuildLoad(builder, zs[3], ""); + } + + if (linear_mask) { + /* + * Whack filter weights into place. Whatever texel had more weight is + * the one which should have been selected by nearest filtering hence + * just use 100% weight for it. + */ + struct lp_build_context *c_bld = &bld->coord_bld; + LLVMValueRef w1_mask, w1_weight; + LLVMValueRef half = lp_build_const_vec(bld->gallivm, c_bld->type, 0.5f); + + w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, s_fpart, half); + /* this select is really just a "and" */ + w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero); + s_fpart = lp_build_select(c_bld, linear_mask, s_fpart, w1_weight); + if (dims >= 2) { + w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, t_fpart, half); + w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero); + t_fpart = lp_build_select(c_bld, linear_mask, t_fpart, w1_weight); + if (dims == 3) { + w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, r_fpart, half); + w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero); + r_fpart = lp_build_select(c_bld, linear_mask, r_fpart, w1_weight); + } + } } /* * Get texture colors. */ /* get x0/x1 texels */ - lp_build_sample_texel_soa(bld, unit, + lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, - x0, y0, z0, + x00, y00, z00, row_stride_vec, img_stride_vec, - data_ptr, neighbors[0][0]); - lp_build_sample_texel_soa(bld, unit, + data_ptr, mipoffsets, neighbors[0][0]); + lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, - x1, y0, z0, + x01, y01, z01, row_stride_vec, img_stride_vec, - data_ptr, neighbors[0][1]); + data_ptr, mipoffsets, 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]); + if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) { + /* 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], + 0); + } + } + else { + LLVMValueRef cmpval0, cmpval1; + cmpval0 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]); + cmpval1 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]); + /* simplified lerp, AND mask with weight and add */ + colors_out[0] = lp_build_masklerp(&bld->texel_bld, s_fpart, + cmpval0, cmpval1); + colors_out[1] = colors_out[2] = colors_out[3] = colors_out[0]; } } else { /* 2D/3D texture */ - LLVMValueRef colors0[4]; + struct lp_build_if_state corner_if; + LLVMValueRef colors0[4], colorss[4]; /* get x0/x1 texels at y1 */ - lp_build_sample_texel_soa(bld, unit, + lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, - x0, y1, z0, + x10, y10, z10, row_stride_vec, img_stride_vec, - data_ptr, neighbors[1][0]); - lp_build_sample_texel_soa(bld, unit, + data_ptr, mipoffsets, neighbors[1][0]); + lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, - x1, y1, z0, + x11, y11, z11, row_stride_vec, img_stride_vec, - data_ptr, neighbors[1][1]); + data_ptr, mipoffsets, 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]); + /* + * To avoid having to duplicate linear_mask / fetch code use + * another branch (with corner condition though edge would work + * as well) here. + */ + if (accurate_cube_corners) { + LLVMValueRef w00, w01, w10, w11, wx0, wy0; + LLVMValueRef c_weight, c00, c01, c10, c11; + LLVMValueRef have_corner, one_third, tmp; + + colorss[0] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs"); + colorss[1] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs"); + colorss[2] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs"); + colorss[3] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs"); + + have_corner = LLVMBuildLoad(builder, have_corners, ""); + + lp_build_if(&corner_if, bld->gallivm, have_corner); + + /* + * we can't use standard 2d lerp as we need per-element weight + * in case of corners, so just calculate bilinear result as + * w00*s00 + w01*s01 + w10*s10 + w11*s11. + * (This is actually less work than using 2d lerp, 7 vs. 9 instructions, + * however calculating the weights needs another 6, so actually probably + * not slower than 2d lerp only for 4 channels as weights only need + * to be calculated once - of course fixing the weights has additional cost.) + */ + wx0 = lp_build_sub(coord_bld, coord_bld->one, s_fpart); + wy0 = lp_build_sub(coord_bld, coord_bld->one, t_fpart); + w00 = lp_build_mul(coord_bld, wx0, wy0); + w01 = lp_build_mul(coord_bld, s_fpart, wy0); + w10 = lp_build_mul(coord_bld, wx0, t_fpart); + w11 = lp_build_mul(coord_bld, s_fpart, t_fpart); + + /* find corner weight */ + c00 = lp_build_and(ivec_bld, fall_off[0], fall_off[2]); + c_weight = lp_build_select(coord_bld, c00, w00, coord_bld->zero); + c01 = lp_build_and(ivec_bld, fall_off[1], fall_off[2]); + c_weight = lp_build_select(coord_bld, c01, w01, c_weight); + c10 = lp_build_and(ivec_bld, fall_off[0], fall_off[3]); + c_weight = lp_build_select(coord_bld, c10, w10, c_weight); + c11 = lp_build_and(ivec_bld, fall_off[1], fall_off[3]); + c_weight = lp_build_select(coord_bld, c11, w11, c_weight); + + /* + * add 1/3 of the corner weight to each of the 3 other samples + * and null out corner weight + */ + one_third = lp_build_const_vec(bld->gallivm, coord_bld->type, 1.0f/3.0f); + c_weight = lp_build_mul(coord_bld, c_weight, one_third); + w00 = lp_build_add(coord_bld, w00, c_weight); + c00 = LLVMBuildBitCast(builder, c00, coord_bld->vec_type, ""); + w00 = lp_build_andnot(coord_bld, w00, c00); + w01 = lp_build_add(coord_bld, w01, c_weight); + c01 = LLVMBuildBitCast(builder, c01, coord_bld->vec_type, ""); + w01 = lp_build_andnot(coord_bld, w01, c01); + w10 = lp_build_add(coord_bld, w10, c_weight); + c10 = LLVMBuildBitCast(builder, c10, coord_bld->vec_type, ""); + w10 = lp_build_andnot(coord_bld, w10, c10); + w11 = lp_build_add(coord_bld, w11, c_weight); + c11 = LLVMBuildBitCast(builder, c11, coord_bld->vec_type, ""); + w11 = lp_build_andnot(coord_bld, w11, c11); + + if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) { + for (chan = 0; chan < 4; chan++) { + colors0[chan] = lp_build_mul(coord_bld, w00, neighbors[0][0][chan]); + tmp = lp_build_mul(coord_bld, w01, neighbors[0][1][chan]); + colors0[chan] = lp_build_add(coord_bld, tmp, colors0[chan]); + tmp = lp_build_mul(coord_bld, w10, neighbors[1][0][chan]); + colors0[chan] = lp_build_add(coord_bld, tmp, colors0[chan]); + tmp = lp_build_mul(coord_bld, w11, neighbors[1][1][chan]); + colors0[chan] = lp_build_add(coord_bld, tmp, colors0[chan]); + } + } + else { + LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11; + cmpval00 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]); + cmpval01 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]); + cmpval10 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][0][0]); + cmpval11 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][1][0]); + /* inputs to interpolation are just masks so just add masked weights together */ + cmpval00 = LLVMBuildBitCast(builder, cmpval00, coord_bld->vec_type, ""); + cmpval01 = LLVMBuildBitCast(builder, cmpval01, coord_bld->vec_type, ""); + cmpval10 = LLVMBuildBitCast(builder, cmpval10, coord_bld->vec_type, ""); + cmpval11 = LLVMBuildBitCast(builder, cmpval11, coord_bld->vec_type, ""); + colors0[0] = lp_build_and(coord_bld, w00, cmpval00); + tmp = lp_build_and(coord_bld, w01, cmpval01); + colors0[0] = lp_build_add(coord_bld, tmp, colors0[0]); + tmp = lp_build_and(coord_bld, w10, cmpval10); + colors0[0] = lp_build_add(coord_bld, tmp, colors0[0]); + tmp = lp_build_and(coord_bld, w11, cmpval11); + colors0[0] = lp_build_add(coord_bld, tmp, colors0[0]); + colors0[1] = colors0[2] = colors0[3] = colors0[0]; + } + + LLVMBuildStore(builder, colors0[0], colorss[0]); + LLVMBuildStore(builder, colors0[1], colorss[1]); + LLVMBuildStore(builder, colors0[2], colorss[2]); + LLVMBuildStore(builder, colors0[3], colorss[3]); + + lp_build_else(&corner_if); + } + + if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) { + /* 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], + 0); + } + } + else { + LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11; + cmpval00 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]); + cmpval01 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]); + cmpval10 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][0][0]); + cmpval11 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][1][0]); + colors0[0] = lp_build_masklerp2d(&bld->texel_bld, s_fpart, t_fpart, + cmpval00, cmpval01, cmpval10, cmpval11); + colors0[1] = colors0[2] = colors0[3] = colors0[0]; + } + + if (accurate_cube_corners) { + LLVMBuildStore(builder, colors0[0], colorss[0]); + LLVMBuildStore(builder, colors0[1], colorss[1]); + LLVMBuildStore(builder, colors0[2], colorss[2]); + LLVMBuildStore(builder, colors0[3], colorss[3]); + + lp_build_endif(&corner_if); + + colors0[0] = LLVMBuildLoad(builder, colorss[0], ""); + colors0[1] = LLVMBuildLoad(builder, colorss[1], ""); + colors0[2] = LLVMBuildLoad(builder, colorss[2], ""); + colors0[3] = LLVMBuildLoad(builder, colorss[3], ""); } if (dims == 3) { @@ -763,42 +1315,60 @@ lp_build_sample_image_linear(struct lp_build_sample_context *bld, LLVMValueRef colors1[4]; /* get x0/x1/y0/y1 texels at z1 */ - lp_build_sample_texel_soa(bld, unit, + lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, - x0, y0, z1, + x00, y00, z1, row_stride_vec, img_stride_vec, - data_ptr, neighbors1[0][0]); - lp_build_sample_texel_soa(bld, unit, + data_ptr, mipoffsets, neighbors1[0][0]); + lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, - x1, y0, z1, + x01, y01, z1, row_stride_vec, img_stride_vec, - data_ptr, neighbors1[0][1]); - lp_build_sample_texel_soa(bld, unit, + data_ptr, mipoffsets, neighbors1[0][1]); + lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, - x0, y1, z1, + x10, y10, z1, row_stride_vec, img_stride_vec, - data_ptr, neighbors1[1][0]); - lp_build_sample_texel_soa(bld, unit, + data_ptr, mipoffsets, neighbors1[1][0]); + lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, - x1, y1, z1, + x11, y11, 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]); + data_ptr, mipoffsets, neighbors1[1][1]); + + if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) { + /* 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], + 0); + } + /* 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], + 0); + } } - - /* 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, + else { + LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11; + cmpval00 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]); + cmpval01 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]); + cmpval10 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][0][0]); + cmpval11 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][1][0]); + colors1[0] = lp_build_masklerp2d(&bld->texel_bld, s_fpart, t_fpart, + cmpval00, cmpval01, cmpval10, cmpval11); + /* Linearly interpolate the two samples from the two 3D slices */ + colors_out[0] = lp_build_lerp(&bld->texel_bld, r_fpart, - colors0[chan], colors1[chan]); + colors0[0], colors1[0], + 0); + colors_out[1] = colors_out[2] = colors_out[3] = colors_out[0]; } } else { @@ -813,32 +1383,32 @@ lp_build_sample_image_linear(struct lp_build_sample_context *bld, /** * 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. + * ilevel0 and ilevel1 indicate the two mipmap levels to sample + * from (vectors or scalars). * 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 *coords, + const LLVMValueRef *offsets, LLVMValueRef ilevel0, LLVMValueRef ilevel1, LLVMValueRef lod_fpart, LLVMValueRef *colors_out) { - LLVMBuilderRef builder = bld->builder; - LLVMValueRef size0; - LLVMValueRef size1; - LLVMValueRef row_stride0_vec; - LLVMValueRef row_stride1_vec; - LLVMValueRef img_stride0_vec; - LLVMValueRef img_stride1_vec; - LLVMValueRef data_ptr0; - LLVMValueRef data_ptr1; + 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 mipoff0 = NULL; + LLVMValueRef mipoff1 = NULL; LLVMValueRef colors0[4], colors1[4]; unsigned chan; @@ -846,20 +1416,25 @@ lp_build_sample_mipmap(struct lp_build_sample_context *bld, lp_build_mipmap_level_sizes(bld, ilevel0, &size0, &row_stride0_vec, &img_stride0_vec); - data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0); + if (bld->num_mips == 1) { + data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0); + } + else { + /* This path should work for num_lods 1 too but slightly less efficient */ + data_ptr0 = bld->base_ptr; + mipoff0 = lp_build_get_mip_offsets(bld, ilevel0); + } if (img_filter == PIPE_TEX_FILTER_NEAREST) { - lp_build_sample_image_nearest(bld, unit, - size0, + lp_build_sample_image_nearest(bld, size0, row_stride0_vec, img_stride0_vec, - data_ptr0, s, t, r, + data_ptr0, mipoff0, coords, offsets, colors0); } else { assert(img_filter == PIPE_TEX_FILTER_LINEAR); - lp_build_sample_image_linear(bld, unit, - size0, + lp_build_sample_image_linear(bld, size0, NULL, row_stride0_vec, img_stride0_vec, - data_ptr0, s, t, r, + data_ptr0, mipoff0, coords, offsets, colors0); } @@ -873,40 +1448,69 @@ lp_build_sample_mipmap(struct lp_build_sample_context *bld, LLVMValueRef need_lerp; /* need_lerp = lod_fpart > 0 */ - need_lerp = LLVMBuildFCmp(builder, LLVMRealUGT, - lod_fpart, - bld->float_bld.zero, - "need_lerp"); + if (bld->num_lods == 1) { + need_lerp = LLVMBuildFCmp(builder, LLVMRealUGT, + lod_fpart, bld->lodf_bld.zero, + "need_lerp"); + } + else { + /* + * We'll do mip filtering if any of the quads (or individual + * pixel in case of per-pixel lod) need it. + * It might be better to split the vectors here and only fetch/filter + * quads which need it (if there's one lod per quad). + */ + need_lerp = lp_build_compare(bld->gallivm, bld->lodf_bld.type, + PIPE_FUNC_GREATER, + lod_fpart, bld->lodf_bld.zero); + need_lerp = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods, need_lerp); + } - lp_build_if(&if_ctx, builder, need_lerp); + lp_build_if(&if_ctx, bld->gallivm, need_lerp); { + /* + * 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->lodf_bld, lod_fpart, + bld->lodf_bld.zero); /* 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 (bld->num_mips == 1) { + data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1); + } + else { + data_ptr1 = bld->base_ptr; + mipoff1 = lp_build_get_mip_offsets(bld, ilevel1); + } if (img_filter == PIPE_TEX_FILTER_NEAREST) { - lp_build_sample_image_nearest(bld, unit, - size1, + lp_build_sample_image_nearest(bld, size1, row_stride1_vec, img_stride1_vec, - data_ptr1, s, t, r, + data_ptr1, mipoff1, coords, offsets, colors1); } else { - lp_build_sample_image_linear(bld, unit, - size1, + lp_build_sample_image_linear(bld, size1, NULL, row_stride1_vec, img_stride1_vec, - data_ptr1, s, t, r, + data_ptr1, mipoff1, coords, offsets, colors1); } /* interpolate samples from the two mipmap levels */ - lod_fpart = lp_build_broadcast_scalar(&bld->texel_bld, lod_fpart); + if (bld->num_lods != bld->coord_type.length) + lod_fpart = lp_build_unpack_broadcast_aos_scalars(bld->gallivm, + bld->lodf_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]); + colors0[chan], colors1[chan], + 0); LLVMBuildStore(builder, colors0[chan], colors_out[chan]); } } @@ -915,209 +1519,791 @@ lp_build_sample_mipmap(struct lp_build_sample_context *bld, } - /** - * General texture sampling codegen. - * This function handles texture sampling for all texture targets (1D, - * 2D, 3D, cube) and all filtering modes. + * Sample the texture/mipmap using given mip filter, and using + * both nearest and linear filtering at the same time depending + * on linear_mask. + * lod can be per quad but linear_mask is always per pixel. + * ilevel0 and ilevel1 indicate the two mipmap levels to sample + * from (vectors or scalars). + * If we're using nearest miplevel sampling the '1' values will be null/unused. */ static void -lp_build_sample_general(struct lp_build_sample_context *bld, - unsigned unit, - LLVMValueRef s, - LLVMValueRef t, - LLVMValueRef r, - const LLVMValueRef *ddx, - const LLVMValueRef *ddy, - LLVMValueRef lod_bias, /* optional */ - LLVMValueRef explicit_lod, /* optional */ - LLVMValueRef *colors_out) +lp_build_sample_mipmap_both(struct lp_build_sample_context *bld, + LLVMValueRef linear_mask, + unsigned mip_filter, + LLVMValueRef *coords, + const LLVMValueRef *offsets, + LLVMValueRef ilevel0, + LLVMValueRef ilevel1, + LLVMValueRef lod_fpart, + LLVMValueRef lod_positive, + LLVMValueRef *colors_out) { - struct lp_build_context *int_bld = &bld->int_bld; - LLVMBuilderRef builder = bld->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 lod_ipart = NULL, lod_fpart = NULL; - LLVMValueRef ilevel0, ilevel1 = NULL; - LLVMValueRef face_ddx[4], face_ddy[4]; - LLVMValueRef texels[4]; - LLVMTypeRef i32t = LLVMInt32Type(); - LLVMValueRef i32t_zero = LLVMConstInt(i32t, 0, 0); + 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 mipoff0 = NULL; + LLVMValueRef mipoff1 = NULL; + LLVMValueRef colors0[4], colors1[4]; unsigned chan; - /* - printf("%s mip %d min %d mag %d\n", __FUNCTION__, - mip_filter, min_filter, mag_filter); - */ + /* sample the first mipmap level */ + lp_build_mipmap_level_sizes(bld, ilevel0, + &size0, + &row_stride0_vec, &img_stride0_vec); + if (bld->num_mips == 1) { + data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0); + } + else { + /* This path should work for num_lods 1 too but slightly less efficient */ + data_ptr0 = bld->base_ptr; + mipoff0 = lp_build_get_mip_offsets(bld, ilevel0); + } - /* - * 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 = lp_build_broadcast_scalar(&bld->int_coord_bld, face); /* vec */ - - /* recompute ddx, ddy using the new (s,t) face texcoords */ - face_ddx[0] = lp_build_scalar_ddx(&bld->coord_bld, s); - face_ddx[1] = lp_build_scalar_ddx(&bld->coord_bld, t); - face_ddx[2] = NULL; - face_ddx[3] = NULL; - face_ddy[0] = lp_build_scalar_ddy(&bld->coord_bld, s); - face_ddy[1] = lp_build_scalar_ddy(&bld->coord_bld, t); - face_ddy[2] = NULL; - face_ddy[3] = NULL; - ddx = face_ddx; - ddy = face_ddy; + lp_build_sample_image_linear(bld, size0, linear_mask, + row_stride0_vec, img_stride0_vec, + data_ptr0, mipoff0, coords, offsets, + colors0); + + /* Store the first level's colors in the output variables */ + for (chan = 0; chan < 4; chan++) { + LLVMBuildStore(builder, colors0[chan], colors_out[chan]); } - /* - * 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. + if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) { + struct lp_build_if_state if_ctx; + LLVMValueRef need_lerp; + + /* + * We'll do mip filtering if any of the quads (or individual + * pixel in case of per-pixel lod) need it. + * Note using lod_positive here not lod_fpart since it may be the same + * condition as that used in the outer "if" in the caller hence llvm + * should be able to merge the branches in this case. */ - lp_build_lod_selector(bld, unit, ddx, ddy, - lod_bias, explicit_lod, - mip_filter, - &lod_ipart, &lod_fpart); - } else { - lod_ipart = i32t_zero; - } + need_lerp = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods, lod_positive); - /* - * 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. + lp_build_if(&if_ctx, bld->gallivm, need_lerp); + { + /* + * 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->lodf_bld, lod_fpart, + bld->lodf_bld.zero); + /* sample the second mipmap level */ + lp_build_mipmap_level_sizes(bld, ilevel1, + &size1, + &row_stride1_vec, &img_stride1_vec); + if (bld->num_mips == 1) { + data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1); + } + else { + data_ptr1 = bld->base_ptr; + mipoff1 = lp_build_get_mip_offsets(bld, ilevel1); + } + + lp_build_sample_image_linear(bld, size1, linear_mask, + row_stride1_vec, img_stride1_vec, + data_ptr1, mipoff1, coords, offsets, + colors1); + + /* interpolate samples from the two mipmap levels */ + + if (bld->num_lods != bld->coord_type.length) + lod_fpart = lp_build_unpack_broadcast_aos_scalars(bld->gallivm, + bld->lodf_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], + 0); + LLVMBuildStore(builder, colors0[chan], colors_out[chan]); + } + } + lp_build_endif(&if_ctx); + } +} + + +/** + * Build (per-coord) layer value. + * Either clamp layer to valid values or fill in optional out_of_bounds + * value and just return value unclamped. + */ +static LLVMValueRef +lp_build_layer_coord(struct lp_build_sample_context *bld, + unsigned texture_unit, + LLVMValueRef layer, + LLVMValueRef *out_of_bounds) +{ + LLVMValueRef num_layers; + struct lp_build_context *int_coord_bld = &bld->int_coord_bld; + + num_layers = bld->dynamic_state->depth(bld->dynamic_state, + bld->gallivm, texture_unit); + + if (out_of_bounds) { + LLVMValueRef out1, out; + num_layers = lp_build_broadcast_scalar(int_coord_bld, num_layers); + out = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, layer, int_coord_bld->zero); + out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, layer, num_layers); + *out_of_bounds = lp_build_or(int_coord_bld, out, out1); + return layer; + } + else { + LLVMValueRef maxlayer; + maxlayer = lp_build_sub(&bld->int_bld, num_layers, bld->int_bld.one); + maxlayer = lp_build_broadcast_scalar(int_coord_bld, maxlayer); + return lp_build_clamp(int_coord_bld, layer, int_coord_bld->zero, maxlayer); + } +} + + +/** + * Calculate cube face, lod, mip levels. + */ +static void +lp_build_sample_common(struct lp_build_sample_context *bld, + unsigned texture_index, + unsigned sampler_index, + LLVMValueRef *coords, + const struct lp_derivatives *derivs, /* optional */ + LLVMValueRef lod_bias, /* optional */ + LLVMValueRef explicit_lod, /* optional */ + LLVMValueRef *lod_pos_or_zero, + LLVMValueRef *lod_fpart, + LLVMValueRef *ilevel0, + LLVMValueRef *ilevel1) +{ + const unsigned mip_filter = bld->static_sampler_state->min_mip_filter; + const unsigned min_filter = bld->static_sampler_state->min_img_filter; + const unsigned mag_filter = bld->static_sampler_state->mag_img_filter; + const unsigned target = bld->static_texture_state->target; + LLVMValueRef first_level, cube_rho = NULL; + LLVMValueRef lod_ipart = NULL; + struct lp_derivatives cube_derivs; + + /* + printf("%s mip %d min %d mag %d\n", __FUNCTION__, + mip_filter, min_filter, mag_filter); + */ + + /* + * Choose cube face, recompute texcoords for the chosen face and + * compute rho here too (as it requires transform of derivatives). + */ + if (target == PIPE_TEXTURE_CUBE) { + boolean need_derivs; + need_derivs = ((min_filter != mag_filter || + mip_filter != PIPE_TEX_MIPFILTER_NONE) && + !bld->static_sampler_state->min_max_lod_equal && + !explicit_lod); + lp_build_cube_lookup(bld, coords, derivs, &cube_rho, &cube_derivs, need_derivs); + derivs = &cube_derivs; + } + else if (target == PIPE_TEXTURE_1D_ARRAY || + target == PIPE_TEXTURE_2D_ARRAY) { + coords[2] = lp_build_iround(&bld->coord_bld, coords[2]); + coords[2] = lp_build_layer_coord(bld, texture_index, coords[2], NULL); + } + + if (bld->static_sampler_state->compare_mode != PIPE_TEX_COMPARE_NONE) { + /* + * Clamp p coords to [0,1] for fixed function depth texture format here. + * Technically this is not entirely correct for unorm depth as the ref value + * should be converted to the depth format (quantization!) and comparison + * then done in texture format. This would actually help performance (since + * only need to do it once and could save the per-sample conversion of texels + * to floats instead), but it would need more messy code (would need to push + * at least some bits down to actual fetch so conversion could be skipped, + * and would have ugly interaction with border color, would need to convert + * border color to that format too or do some other tricks to make it work). + */ + const struct util_format_description *format_desc = bld->format_desc; + unsigned chan_type; + /* not entirely sure we couldn't end up with non-valid swizzle here */ + chan_type = format_desc->swizzle[0] <= UTIL_FORMAT_SWIZZLE_W ? + format_desc->channel[format_desc->swizzle[0]].type : + UTIL_FORMAT_TYPE_FLOAT; + if (chan_type != UTIL_FORMAT_TYPE_FLOAT) { + coords[4] = lp_build_clamp(&bld->coord_bld, coords[4], + bld->coord_bld.zero, bld->coord_bld.one); + } + } + + /* + * 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, texture_index, sampler_index, + coords[0], coords[1], coords[2], cube_rho, + derivs, lod_bias, explicit_lod, + mip_filter, + &lod_ipart, lod_fpart, lod_pos_or_zero); + } else { + lod_ipart = bld->lodi_bld.zero; + *lod_pos_or_zero = bld->lodi_bld.zero; + } + + if (bld->num_lods != bld->num_mips) { + /* only makes sense if there's just a single mip level */ + assert(bld->num_mips == 1); + lod_ipart = lp_build_extract_range(bld->gallivm, lod_ipart, 0, 1); + } + + /* + * 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 (HAVE_LLVM == 0x0207 && 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. */ assert(lod_ipart); - lp_build_nearest_mip_level(bld, unit, lod_ipart, &ilevel0); + lp_build_nearest_mip_level(bld, texture_index, lod_ipart, ilevel0, NULL); } else { - ilevel0 = i32t_zero; + first_level = bld->dynamic_state->first_level(bld->dynamic_state, + bld->gallivm, texture_index); + first_level = lp_build_broadcast_scalar(&bld->leveli_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); + lp_build_nearest_mip_level(bld, texture_index, lod_ipart, ilevel0, NULL); 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); + assert(*lod_fpart); + lp_build_linear_mip_levels(bld, texture_index, + lod_ipart, lod_fpart, + ilevel0, ilevel1); break; } +} + +static void +lp_build_clamp_border_color(struct lp_build_sample_context *bld, + unsigned sampler_unit) +{ + struct gallivm_state *gallivm = bld->gallivm; + LLVMBuilderRef builder = gallivm->builder; + LLVMValueRef border_color_ptr = + bld->dynamic_state->border_color(bld->dynamic_state, + gallivm, sampler_unit); + LLVMValueRef border_color; + const struct util_format_description *format_desc = bld->format_desc; + struct lp_type vec4_type = bld->texel_type; + struct lp_build_context vec4_bld; + LLVMValueRef min_clamp = NULL; + LLVMValueRef max_clamp = NULL; + + /* + * For normalized format need to clamp border color (technically + * probably should also quantize the data). Really sucks doing this + * here but can't avoid at least for now since this is part of + * sampler state and texture format is part of sampler_view state. + * GL expects also expects clamping for uint/sint formats too so + * do that as well (d3d10 can't end up here with uint/sint since it + * only supports them with ld). + */ + vec4_type.length = 4; + lp_build_context_init(&vec4_bld, gallivm, vec4_type); + + /* + * Vectorized clamping of border color. Loading is a bit of a hack since + * we just cast the pointer to float array to pointer to vec4 + * (int or float). + */ + border_color_ptr = lp_build_array_get_ptr(gallivm, border_color_ptr, + lp_build_const_int32(gallivm, 0)); + border_color_ptr = LLVMBuildBitCast(builder, border_color_ptr, + LLVMPointerType(vec4_bld.vec_type, 0), ""); + border_color = LLVMBuildLoad(builder, border_color_ptr, ""); + /* we don't have aligned type in the dynamic state unfortunately */ + lp_set_load_alignment(border_color, 4); + + /* + * Instead of having some incredibly complex logic which will try to figure out + * clamping necessary for each channel, simply use the first channel, and treat + * mixed signed/unsigned normalized formats specially. + * (Mixed non-normalized, which wouldn't work at all here, do not exist for a + * good reason.) + */ + if (format_desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) { + int chan; + /* d/s needs special handling because both present means just sampling depth */ + if (util_format_is_depth_and_stencil(format_desc->format)) { + chan = format_desc->swizzle[0]; + } + else { + chan = util_format_get_first_non_void_channel(format_desc->format); + } + if (chan >= 0 && chan <= UTIL_FORMAT_SWIZZLE_W) { + unsigned chan_type = format_desc->channel[chan].type; + unsigned chan_norm = format_desc->channel[chan].normalized; + unsigned chan_pure = format_desc->channel[chan].pure_integer; + if (chan_type == UTIL_FORMAT_TYPE_SIGNED) { + if (chan_norm) { + min_clamp = lp_build_const_vec(gallivm, vec4_type, -1.0F); + max_clamp = vec4_bld.one; + } + else if (chan_pure) { + /* + * Border color was stored as int, hence need min/max clamp + * only if chan has less than 32 bits.. + */ + unsigned chan_size = format_desc->channel[chan].size; + if (chan_size < 32) { + min_clamp = lp_build_const_int_vec(gallivm, vec4_type, + 0 - (1 << (chan_size - 1))); + max_clamp = lp_build_const_int_vec(gallivm, vec4_type, + (1 << (chan_size - 1)) - 1); + } + } + /* TODO: no idea about non-pure, non-normalized! */ + } + else if (chan_type == UTIL_FORMAT_TYPE_UNSIGNED) { + if (chan_norm) { + min_clamp = vec4_bld.zero; + max_clamp = vec4_bld.one; + } + /* + * Need a ugly hack here, because we don't have Z32_FLOAT_X8X24 + * we use Z32_FLOAT_S8X24 to imply sampling depth component + * and ignoring stencil, which will blow up here if we try to + * do a uint clamp in a float texel build... + * And even if we had that format, mesa st also thinks using z24s8 + * means depth sampling ignoring stencil. + */ + else if (chan_pure) { + /* + * Border color was stored as uint, hence never need min + * clamp, and only need max clamp if chan has less than 32 bits. + */ + unsigned chan_size = format_desc->channel[chan].size; + if (chan_size < 32) { + max_clamp = lp_build_const_int_vec(gallivm, vec4_type, + (1 << chan_size) - 1); + } + /* TODO: no idea about non-pure, non-normalized! */ + } + } + else if (chan_type == UTIL_FORMAT_TYPE_FIXED) { + /* TODO: I have no idea what clamp this would need if any! */ + } + } + /* mixed plain formats (or different pure size) */ + switch (format_desc->format) { + case PIPE_FORMAT_B10G10R10A2_UINT: + case PIPE_FORMAT_R10G10B10A2_UINT: + { + unsigned max10 = (1 << 10) - 1; + max_clamp = lp_build_const_aos(gallivm, vec4_type, max10, max10, + max10, (1 << 2) - 1, NULL); + } + break; + case PIPE_FORMAT_R10SG10SB10SA2U_NORM: + min_clamp = lp_build_const_aos(gallivm, vec4_type, -1.0F, -1.0F, + -1.0F, 0.0F, NULL); + max_clamp = vec4_bld.one; + break; + case PIPE_FORMAT_R8SG8SB8UX8U_NORM: + case PIPE_FORMAT_R5SG5SB6U_NORM: + min_clamp = lp_build_const_aos(gallivm, vec4_type, -1.0F, -1.0F, + 0.0F, 0.0F, NULL); + max_clamp = vec4_bld.one; + break; + default: + break; + } + } + else { + /* cannot figure this out from format description */ + if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) { + /* s3tc formats are always unorm */ + min_clamp = vec4_bld.zero; + max_clamp = vec4_bld.one; + } + else if (format_desc->layout == UTIL_FORMAT_LAYOUT_RGTC || + format_desc->layout == UTIL_FORMAT_LAYOUT_ETC) { + switch (format_desc->format) { + case PIPE_FORMAT_RGTC1_UNORM: + case PIPE_FORMAT_RGTC2_UNORM: + case PIPE_FORMAT_LATC1_UNORM: + case PIPE_FORMAT_LATC2_UNORM: + case PIPE_FORMAT_ETC1_RGB8: + min_clamp = vec4_bld.zero; + max_clamp = vec4_bld.one; + break; + case PIPE_FORMAT_RGTC1_SNORM: + case PIPE_FORMAT_RGTC2_SNORM: + case PIPE_FORMAT_LATC1_SNORM: + case PIPE_FORMAT_LATC2_SNORM: + min_clamp = lp_build_const_vec(gallivm, vec4_type, -1.0F); + max_clamp = vec4_bld.one; + break; + default: + assert(0); + break; + } + } + /* + * all others from subsampled/other group, though we don't care + * about yuv (and should not have any from zs here) + */ + else if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_YUV){ + switch (format_desc->format) { + case PIPE_FORMAT_R8G8_B8G8_UNORM: + case PIPE_FORMAT_G8R8_G8B8_UNORM: + case PIPE_FORMAT_G8R8_B8R8_UNORM: + case PIPE_FORMAT_R8G8_R8B8_UNORM: + case PIPE_FORMAT_R1_UNORM: /* doesn't make sense but ah well */ + min_clamp = vec4_bld.zero; + max_clamp = vec4_bld.one; + break; + case PIPE_FORMAT_R8G8Bx_SNORM: + min_clamp = lp_build_const_vec(gallivm, vec4_type, -1.0F); + max_clamp = vec4_bld.one; + break; + /* + * Note smallfloat formats usually don't need clamping + * (they still have infinite range) however this is not + * true for r11g11b10 and r9g9b9e5, which can't represent + * negative numbers (and additionally r9g9b9e5 can't represent + * very large numbers). d3d10 seems happy without clamping in + * this case, but gl spec is pretty clear: "for floating + * point and integer formats, border values are clamped to + * the representable range of the format" so do that here. + */ + case PIPE_FORMAT_R11G11B10_FLOAT: + min_clamp = vec4_bld.zero; + break; + case PIPE_FORMAT_R9G9B9E5_FLOAT: + min_clamp = vec4_bld.zero; + max_clamp = lp_build_const_vec(gallivm, vec4_type, MAX_RGB9E5); + break; + default: + assert(0); + break; + } + } + } + + if (min_clamp) { + border_color = lp_build_max(&vec4_bld, border_color, min_clamp); + } + if (max_clamp) { + border_color = lp_build_min(&vec4_bld, border_color, max_clamp); + } + + bld->border_color_clamped = border_color; +} + + +/** + * 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 sampler_unit, + LLVMValueRef *coords, + const LLVMValueRef *offsets, + LLVMValueRef lod_positive, + LLVMValueRef lod_fpart, + LLVMValueRef ilevel0, + LLVMValueRef ilevel1, + LLVMValueRef *colors_out) +{ + LLVMBuilderRef builder = bld->gallivm->builder; + const struct lp_static_sampler_state *sampler_state = bld->static_sampler_state; + const unsigned mip_filter = sampler_state->min_mip_filter; + const unsigned min_filter = sampler_state->min_img_filter; + const unsigned mag_filter = sampler_state->mag_img_filter; + LLVMValueRef texels[4]; + unsigned chan; + + /* if we need border color, (potentially) clamp it now */ + if (lp_sampler_wrap_mode_uses_border_color(sampler_state->wrap_s, + min_filter, + mag_filter) || + (bld->dims > 1 && + lp_sampler_wrap_mode_uses_border_color(sampler_state->wrap_t, + min_filter, + mag_filter)) || + (bld->dims > 2 && + lp_sampler_wrap_mode_uses_border_color(sampler_state->wrap_r, + min_filter, + mag_filter))) { + lp_build_clamp_border_color(bld, sampler_unit); + } + /* * Get/interpolate texture colors. */ for (chan = 0; chan < 4; ++chan) { - texels[chan] = lp_build_alloca(builder, bld->texel_bld.vec_type, ""); - lp_build_name(texels[chan], "sampler%u_texel_%c_var", unit, "xyzw"[chan]); + texels[chan] = lp_build_alloca(bld->gallivm, bld->texel_bld.vec_type, ""); + lp_build_name(texels[chan], "sampler%u_texel_%c_var", sampler_unit, "xyzw"[chan]); } if (min_filter == mag_filter) { - /* no need to distinquish between minification and magnification */ - lp_build_sample_mipmap(bld, unit, - min_filter, mip_filter, - s, t, r, + /* no need to distinguish between minification and magnification */ + lp_build_sample_mipmap(bld, min_filter, mip_filter, + coords, offsets, 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. + /* + * Could also get rid of the if-logic and always use mipmap_both, both + * for the single lod and multi-lod case if nothing really uses this. */ - struct lp_build_if_state if_ctx; - LLVMValueRef minify; + if (bld->num_lods == 1) { + /* 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; + + lod_positive = LLVMBuildTrunc(builder, lod_positive, + LLVMInt1TypeInContext(bld->gallivm->context), ""); + + lp_build_if(&if_ctx, bld->gallivm, lod_positive); + { + /* Use the minification filter */ + lp_build_sample_mipmap(bld, min_filter, mip_filter, + coords, offsets, + ilevel0, ilevel1, lod_fpart, + texels); + } + lp_build_else(&if_ctx); + { + /* Use the magnification filter */ + lp_build_sample_mipmap(bld, mag_filter, PIPE_TEX_MIPFILTER_NONE, + coords, offsets, + ilevel0, NULL, NULL, + texels); + } + lp_build_endif(&if_ctx); + } + else { + LLVMValueRef need_linear, linear_mask; + unsigned mip_filter_for_nearest; + struct lp_build_if_state if_ctx; - /* minify = lod >= 0.0 */ - minify = LLVMBuildICmp(builder, LLVMIntSGE, - lod_ipart, int_bld->zero, ""); + if (min_filter == PIPE_TEX_FILTER_LINEAR) { + linear_mask = lod_positive; + mip_filter_for_nearest = PIPE_TEX_MIPFILTER_NONE; + } + else { + linear_mask = lp_build_not(&bld->lodi_bld, lod_positive); + mip_filter_for_nearest = mip_filter; + } + need_linear = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods, + linear_mask); + + if (bld->num_lods != bld->coord_type.length) { + linear_mask = lp_build_unpack_broadcast_aos_scalars(bld->gallivm, + bld->lodi_type, + bld->int_coord_type, + linear_mask); + } - lp_build_if(&if_ctx, builder, 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, - i32t_zero, NULL, NULL, - texels); + lp_build_if(&if_ctx, bld->gallivm, need_linear); + { + /* + * Do sampling with both filters simultaneously. This means using + * a linear filter and doing some tricks (with weights) for the pixels + * which need nearest filter. + * Note that it's probably rare some pixels need nearest and some + * linear filter but the fixups required for the nearest pixels + * aren't all that complicated so just always run a combined path + * if at least some pixels require linear. + */ + lp_build_sample_mipmap_both(bld, linear_mask, mip_filter, + coords, offsets, + ilevel0, ilevel1, + lod_fpart, lod_positive, + texels); + } + lp_build_else(&if_ctx); + { + /* + * All pixels require just nearest filtering, which is way + * cheaper than linear, hence do a separate path for that. + */ + lp_build_sample_mipmap(bld, PIPE_TEX_FILTER_NEAREST, + mip_filter_for_nearest, + coords, offsets, + ilevel0, ilevel1, lod_fpart, + texels); + } + lp_build_endif(&if_ctx); } - 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]); + lp_build_name(colors_out[chan], "sampler%u_texel_%c", sampler_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) + * Texel fetch function. + * In contrast to general sampling there is no filtering, no coord minification, + * lod (if any) is always explicit uint, coords are uints (in terms of texel units) + * directly to be applied to the selected mip level (after adding texel offsets). + * This function handles texel fetch for all targets where texel fetch is supported + * (no cube maps, but 1d, 2d, 3d are supported, arrays and buffers should be too). */ static void -lp_build_sample_compare(struct lp_build_sample_context *bld, - LLVMValueRef p, - LLVMValueRef texel[4]) +lp_build_fetch_texel(struct lp_build_sample_context *bld, + unsigned texture_unit, + const LLVMValueRef *coords, + LLVMValueRef explicit_lod, + const LLVMValueRef *offsets, + LLVMValueRef *colors_out) { - struct lp_build_context *texel_bld = &bld->texel_bld; - LLVMValueRef res; - const unsigned chan = 0; + struct lp_build_context *perquadi_bld = &bld->lodi_bld; + struct lp_build_context *int_coord_bld = &bld->int_coord_bld; + unsigned dims = bld->dims, chan; + unsigned target = bld->static_texture_state->target; + boolean out_of_bound_ret_zero = TRUE; + LLVMValueRef size, ilevel; + LLVMValueRef row_stride_vec = NULL, img_stride_vec = NULL; + LLVMValueRef x = coords[0], y = coords[1], z = coords[2]; + LLVMValueRef width, height, depth, i, j; + LLVMValueRef offset, out_of_bounds, out1; + + out_of_bounds = int_coord_bld->zero; + + if (explicit_lod && bld->static_texture_state->target != PIPE_BUFFER) { + if (bld->num_mips != int_coord_bld->type.length) { + ilevel = lp_build_pack_aos_scalars(bld->gallivm, int_coord_bld->type, + perquadi_bld->type, explicit_lod, 0); + } + else { + ilevel = explicit_lod; + } + lp_build_nearest_mip_level(bld, texture_unit, ilevel, &ilevel, + out_of_bound_ret_zero ? &out_of_bounds : NULL); + } + else { + assert(bld->num_mips == 1); + if (bld->static_texture_state->target != PIPE_BUFFER) { + ilevel = bld->dynamic_state->first_level(bld->dynamic_state, + bld->gallivm, texture_unit); + } + else { + ilevel = lp_build_const_int32(bld->gallivm, 0); + } + } + lp_build_mipmap_level_sizes(bld, ilevel, + &size, + &row_stride_vec, &img_stride_vec); + lp_build_extract_image_sizes(bld, &bld->int_size_bld, int_coord_bld->type, + size, &width, &height, &depth); + + if (target == PIPE_TEXTURE_1D_ARRAY || + target == PIPE_TEXTURE_2D_ARRAY) { + if (out_of_bound_ret_zero) { + z = lp_build_layer_coord(bld, texture_unit, z, &out1); + out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); + } + else { + z = lp_build_layer_coord(bld, texture_unit, z, NULL); + } + } - if (bld->static_state->compare_mode == PIPE_TEX_COMPARE_NONE) - return; + /* This is a lot like border sampling */ + if (offsets[0]) { + /* + * coords are really unsigned, offsets are signed, but I don't think + * exceeding 31 bits is possible + */ + x = lp_build_add(int_coord_bld, x, offsets[0]); + } + out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, x, int_coord_bld->zero); + out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); + out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, x, width); + out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); - /* debug code */ - if (0) { - LLVMValueRef indx = lp_build_const_int32(0); - LLVMValueRef coord = LLVMBuildExtractElement(bld->builder, p, indx, ""); - LLVMValueRef tex = LLVMBuildExtractElement(bld->builder, - texel[chan], indx, ""); - lp_build_printf(bld->builder, "shadow compare coord %f to texture %f\n", - coord, tex); + if (dims >= 2) { + if (offsets[1]) { + y = lp_build_add(int_coord_bld, y, offsets[1]); + } + out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, y, int_coord_bld->zero); + out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); + out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, y, height); + out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); + + if (dims >= 3) { + if (offsets[2]) { + z = lp_build_add(int_coord_bld, z, offsets[2]); + } + out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, z, int_coord_bld->zero); + out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); + out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, z, depth); + out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); + } } - /* 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; + lp_build_sample_offset(int_coord_bld, + bld->format_desc, + x, y, z, row_stride_vec, img_stride_vec, + &offset, &i, &j); + + if (bld->static_texture_state->target != PIPE_BUFFER) { + offset = lp_build_add(int_coord_bld, offset, + lp_build_get_mip_offsets(bld, ilevel)); + } + + offset = lp_build_andnot(int_coord_bld, offset, out_of_bounds); + + lp_build_fetch_rgba_soa(bld->gallivm, + bld->format_desc, + bld->texel_type, + bld->base_ptr, offset, + i, j, + colors_out); + + if (out_of_bound_ret_zero) { + /* + * Only needed for ARB_robust_buffer_access_behavior and d3d10. + * Could use min/max above instead of out-of-bounds comparisons + * if we don't care about the result returned for out-of-bounds. + */ + for (chan = 0; chan < 4; chan++) { + colors_out[chan] = lp_build_select(&bld->texel_bld, out_of_bounds, + bld->texel_bld.zero, colors_out[chan]); + } + } } @@ -1126,10 +2312,12 @@ lp_build_sample_compare(struct lp_build_sample_context *bld, * For debugging. */ void -lp_build_sample_nop(struct lp_type type, +lp_build_sample_nop(struct gallivm_state *gallivm, + struct lp_type type, + const LLVMValueRef *coords, LLVMValueRef texel_out[4]) { - LLVMValueRef one = lp_build_one(type); + LLVMValueRef one = lp_build_one(gallivm, type); unsigned chan; for (chan = 0; chan < 4; chan++) { @@ -1143,127 +2331,678 @@ lp_build_sample_nop(struct lp_type type, * '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 ddx partial derivatives of (s,t,r,q) with respect to x - * \param ddy partial derivatives of (s,t,r,q) with respect to y + * \param is_fetch if this is a texel fetch instruction. + * \param derivs partial derivatives of (s,t,r,q) with respect to x and y */ void -lp_build_sample_soa(LLVMBuilderRef builder, - const struct lp_sampler_static_state *static_state, +lp_build_sample_soa(struct gallivm_state *gallivm, + const struct lp_static_texture_state *static_texture_state, + const struct lp_static_sampler_state *static_sampler_state, struct lp_sampler_dynamic_state *dynamic_state, struct lp_type type, - unsigned unit, - unsigned num_coords, + boolean is_fetch, + unsigned texture_index, + unsigned sampler_index, const LLVMValueRef *coords, - const LLVMValueRef ddx[4], - const LLVMValueRef ddy[4], + const LLVMValueRef *offsets, + const struct lp_derivatives *derivs, /* optional */ LLVMValueRef lod_bias, /* optional */ LLVMValueRef explicit_lod, /* optional */ + enum lp_sampler_lod_property lod_property, LLVMValueRef texel_out[4]) { - unsigned dims = texture_dims(static_state->target); + unsigned target = static_texture_state->target; + unsigned dims = texture_dims(target); + unsigned num_quads = type.length / 4; + unsigned mip_filter, min_img_filter, mag_img_filter, i; struct lp_build_sample_context bld; - LLVMTypeRef i32t = LLVMInt32Type(); - - LLVMValueRef s; - LLVMValueRef t; - LLVMValueRef r; - struct lp_type float_vec_type; + struct lp_static_sampler_state derived_sampler_state = *static_sampler_state; + LLVMTypeRef i32t = LLVMInt32TypeInContext(gallivm->context); + LLVMBuilderRef builder = gallivm->builder; + LLVMValueRef tex_width, newcoords[5]; if (0) { - enum pipe_format fmt = static_state->format; + enum pipe_format fmt = static_texture_state->format; debug_printf("Sample from %s\n", util_format_name(fmt)); } + if (static_texture_state->format == PIPE_FORMAT_NONE) { + /* + * If there's nothing bound, format is NONE, and we must return + * all zero as mandated by d3d10 in this case. + */ + unsigned chan; + LLVMValueRef zero = lp_build_const_vec(gallivm, type, 0.0F); + for (chan = 0; chan < 4; chan++) { + texel_out[chan] = zero; + } + return; + } + assert(type.floating); /* Setup our build context */ memset(&bld, 0, sizeof bld); - bld.builder = builder; - bld.static_state = static_state; + bld.gallivm = gallivm; + bld.static_sampler_state = &derived_sampler_state; + bld.static_texture_state = static_texture_state; bld.dynamic_state = dynamic_state; - bld.format_desc = util_format_description(static_state->format); + bld.format_desc = util_format_description(static_texture_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.float_size_in_type = lp_type_float(32); + bld.float_size_in_type.length = dims > 1 ? 4 : 1; + bld.int_size_in_type = lp_int_type(bld.float_size_in_type); bld.texel_type = type; - float_vec_type = lp_type_float_vec(32); + /* always using the first channel hopefully should be safe, + * if not things WILL break in other places anyway. + */ + if (bld.format_desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB && + bld.format_desc->channel[0].pure_integer) { + if (bld.format_desc->channel[0].type == UTIL_FORMAT_TYPE_SIGNED) { + bld.texel_type = lp_type_int_vec(type.width, type.width * type.length); + } + else if (bld.format_desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) { + bld.texel_type = lp_type_uint_vec(type.width, type.width * type.length); + } + } + else if (util_format_has_stencil(bld.format_desc) && + !util_format_has_depth(bld.format_desc)) { + /* for stencil only formats, sample stencil (uint) */ + bld.texel_type = lp_type_int_vec(type.width, type.width * type.length); + } - lp_build_context_init(&bld.float_bld, builder, bld.float_type); - lp_build_context_init(&bld.float_vec_bld, builder, float_vec_type); - lp_build_context_init(&bld.int_bld, builder, bld.int_type); - lp_build_context_init(&bld.coord_bld, builder, bld.coord_type); - lp_build_context_init(&bld.int_coord_bld, builder, bld.int_coord_type); - lp_build_context_init(&bld.int_size_bld, builder, bld.int_size_type); - lp_build_context_init(&bld.float_size_bld, builder, bld.float_size_type); - lp_build_context_init(&bld.texel_bld, builder, bld.texel_type); + if (!static_texture_state->level_zero_only) { + derived_sampler_state.min_mip_filter = static_sampler_state->min_mip_filter; + } else { + derived_sampler_state.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; + } + mip_filter = derived_sampler_state.min_mip_filter; + + if (0) { + debug_printf(" .min_mip_filter = %u\n", derived_sampler_state.min_mip_filter); + } + + if (static_texture_state->target == PIPE_TEXTURE_CUBE || + static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) + { + /* + * Seamless filtering ignores wrap modes. + * Setting to CLAMP_TO_EDGE is correct for nearest filtering, for + * bilinear it's not correct but way better than using for instance repeat. + * Note we even set this for non-seamless. Technically GL allows any wrap + * mode, which made sense when supporting true borders (can get seamless + * effect with border and CLAMP_TO_BORDER), but gallium doesn't support + * borders and d3d9 requires wrap modes to be ignored and it's a pain to fix + * up the sampler state (as it makes it texture dependent). + */ + derived_sampler_state.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + derived_sampler_state.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + } + + min_img_filter = derived_sampler_state.min_img_filter; + mag_img_filter = derived_sampler_state.mag_img_filter; + + + /* + * This is all a bit complicated different paths are chosen for performance + * reasons. + * Essentially, there can be 1 lod per element, 1 lod per quad or 1 lod for + * everything (the last two options are equivalent for 4-wide case). + * If there's per-quad lod but we split to 4-wide so we can use AoS, per-quad + * lod is calculated then the lod value extracted afterwards so making this + * case basically the same as far as lod handling is concerned for the + * further sample/filter code as the 1 lod for everything case. + * Different lod handling mostly shows up when building mipmap sizes + * (lp_build_mipmap_level_sizes() and friends) and also in filtering + * (getting the fractional part of the lod to the right texels). + */ + + /* + * There are other situations where at least the multiple int lods could be + * avoided like min and max lod being equal. + */ + bld.num_mips = bld.num_lods = 1; + + if ((gallivm_debug & GALLIVM_DEBUG_NO_QUAD_LOD) && + (gallivm_debug & GALLIVM_DEBUG_NO_RHO_APPROX) && + (static_texture_state->target == PIPE_TEXTURE_CUBE) && + (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)) { + /* + * special case for using per-pixel lod even for implicit lod, + * which is generally never required (ok by APIs) except to please + * some (somewhat broken imho) tests (because per-pixel face selection + * can cause derivatives to be different for pixels outside the primitive + * due to the major axis division even if pre-project derivatives are + * looking normal). + */ + bld.num_mips = type.length; + bld.num_lods = type.length; + } + else if (lod_property == LP_SAMPLER_LOD_PER_ELEMENT || + (explicit_lod || lod_bias || derivs)) { + if ((is_fetch && target != PIPE_BUFFER) || + (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)) { + bld.num_mips = type.length; + bld.num_lods = type.length; + } + else if (!is_fetch && min_img_filter != mag_img_filter) { + bld.num_mips = 1; + bld.num_lods = type.length; + } + } + /* TODO: for true scalar_lod should only use 1 lod value */ + else if ((is_fetch && explicit_lod && target != PIPE_BUFFER) || + (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)) { + bld.num_mips = num_quads; + bld.num_lods = num_quads; + } + else if (!is_fetch && min_img_filter != mag_img_filter) { + bld.num_mips = 1; + bld.num_lods = num_quads; + } + + + bld.lodf_type = type; + /* we want native vector size to be able to use our intrinsics */ + if (bld.num_lods != type.length) { + /* TODO: this currently always has to be per-quad or per-element */ + bld.lodf_type.length = type.length > 4 ? ((type.length + 15) / 16) * 4 : 1; + } + bld.lodi_type = lp_int_type(bld.lodf_type); + bld.levelf_type = bld.lodf_type; + if (bld.num_mips == 1) { + bld.levelf_type.length = 1; + } + bld.leveli_type = lp_int_type(bld.levelf_type); + bld.float_size_type = bld.float_size_in_type; + /* Note: size vectors may not be native. They contain minified w/h/d/_ values, + * with per-element lod that is w0/h0/d0/_/w1/h1/d1_/... so up to 8x4f32 */ + if (bld.num_mips > 1) { + bld.float_size_type.length = bld.num_mips == type.length ? + bld.num_mips * bld.float_size_in_type.length : + type.length; + } + bld.int_size_type = lp_int_type(bld.float_size_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_in_bld, gallivm, bld.int_size_in_type); + lp_build_context_init(&bld.float_size_in_bld, gallivm, bld.float_size_in_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.levelf_bld, gallivm, bld.levelf_type); + lp_build_context_init(&bld.leveli_bld, gallivm, bld.leveli_type); + lp_build_context_init(&bld.lodf_bld, gallivm, bld.lodf_type); + lp_build_context_init(&bld.lodi_bld, gallivm, bld.lodi_type); /* Get the dynamic state */ - bld.width = dynamic_state->width(dynamic_state, builder, unit); - bld.height = dynamic_state->height(dynamic_state, builder, unit); - bld.depth = dynamic_state->depth(dynamic_state, builder, unit); - bld.row_stride_array = dynamic_state->row_stride(dynamic_state, builder, unit); - bld.img_stride_array = dynamic_state->img_stride(dynamic_state, builder, unit); - bld.data_array = dynamic_state->data_ptr(dynamic_state, builder, unit); - /* Note that data_array is an array[level] of pointers to texture images */ - - s = coords[0]; - t = coords[1]; - r = coords[2]; + tex_width = dynamic_state->width(dynamic_state, gallivm, texture_index); + bld.row_stride_array = dynamic_state->row_stride(dynamic_state, gallivm, texture_index); + bld.img_stride_array = dynamic_state->img_stride(dynamic_state, gallivm, texture_index); + bld.base_ptr = dynamic_state->base_ptr(dynamic_state, gallivm, texture_index); + bld.mip_offsets = dynamic_state->mip_offsets(dynamic_state, gallivm, texture_index); + /* Note that mip_offsets is an array[level] of offsets to texture images */ /* width, height, depth as single int vector */ if (dims <= 1) { - bld.int_size = bld.width; + bld.int_size = tex_width; } else { - bld.int_size = LLVMBuildInsertElement(builder, bld.int_size_bld.undef, - bld.width, LLVMConstInt(i32t, 0, 0), ""); + bld.int_size = LLVMBuildInsertElement(builder, bld.int_size_in_bld.undef, + tex_width, LLVMConstInt(i32t, 0, 0), ""); if (dims >= 2) { + LLVMValueRef tex_height = + dynamic_state->height(dynamic_state, gallivm, texture_index); bld.int_size = LLVMBuildInsertElement(builder, bld.int_size, - bld.height, LLVMConstInt(i32t, 1, 0), ""); + tex_height, LLVMConstInt(i32t, 1, 0), ""); if (dims >= 3) { + LLVMValueRef tex_depth = + dynamic_state->depth(dynamic_state, gallivm, texture_index); bld.int_size = LLVMBuildInsertElement(builder, bld.int_size, - bld.depth, LLVMConstInt(i32t, 2, 0), ""); + tex_depth, LLVMConstInt(i32t, 2, 0), ""); } } } + for (i = 0; i < 5; i++) { + newcoords[i] = coords[i]; + } + if (0) { /* For debug: no-op texture sampling */ - lp_build_sample_nop(bld.texel_type, texel_out); - } - else if (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)) { - /* do sampling/filtering with fixed pt arithmetic */ - lp_build_sample_aos(&bld, unit, s, t, r, ddx, ddy, - lod_bias, explicit_lod, + lp_build_sample_nop(gallivm, + bld.texel_type, + newcoords, texel_out); } + else if (is_fetch) { + lp_build_fetch_texel(&bld, texture_index, newcoords, + explicit_lod, offsets, + texel_out); + } + else { + LLVMValueRef lod_fpart = NULL, lod_positive = NULL; + LLVMValueRef ilevel0 = NULL, ilevel1 = NULL; + boolean use_aos = util_format_fits_8unorm(bld.format_desc) && + /* not sure this is strictly needed or simply impossible */ + derived_sampler_state.compare_mode == PIPE_TEX_COMPARE_NONE && + lp_is_simple_wrap_mode(derived_sampler_state.wrap_s); + + use_aos &= bld.num_lods <= num_quads || + derived_sampler_state.min_img_filter == + derived_sampler_state.mag_img_filter; + if (dims > 1) { + use_aos &= lp_is_simple_wrap_mode(derived_sampler_state.wrap_t); + if (dims > 2) { + use_aos &= lp_is_simple_wrap_mode(derived_sampler_state.wrap_r); + } + } + if (static_texture_state->target == PIPE_TEXTURE_CUBE && + derived_sampler_state.seamless_cube_map && + (derived_sampler_state.min_img_filter == PIPE_TEX_FILTER_LINEAR || + derived_sampler_state.mag_img_filter == PIPE_TEX_FILTER_LINEAR)) { + /* theoretically possible with AoS filtering but not implemented (complex!) */ + use_aos = 0; + } + if ((gallivm_debug & GALLIVM_DEBUG_PERF) && - util_format_fits_8unorm(bld.format_desc)) { + !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); + debug_printf(" min_img %d mag_img %d mip %d target %d seamless %d" + " wraps %d wrapt %d wrapr %d\n", + derived_sampler_state.min_img_filter, + derived_sampler_state.mag_img_filter, + derived_sampler_state.min_mip_filter, + static_texture_state->target, + derived_sampler_state.seamless_cube_map, + derived_sampler_state.wrap_s, + derived_sampler_state.wrap_t, + derived_sampler_state.wrap_r); } - lp_build_sample_general(&bld, unit, s, t, r, ddx, ddy, - lod_bias, explicit_lod, - texel_out); + lp_build_sample_common(&bld, texture_index, sampler_index, + newcoords, + derivs, lod_bias, explicit_lod, + &lod_positive, &lod_fpart, + &ilevel0, &ilevel1); + + /* + * we only try 8-wide sampling with soa as it appears to + * be a loss with aos with AVX (but it should work, except + * for conformance if min_filter != mag_filter if num_lods > 1). + * (It should be faster if we'd support avx2) + */ + if (num_quads == 1 || !use_aos) { + if (use_aos) { + /* do sampling/filtering with fixed pt arithmetic */ + lp_build_sample_aos(&bld, sampler_index, + newcoords[0], newcoords[1], + newcoords[2], + offsets, lod_positive, lod_fpart, + ilevel0, ilevel1, + texel_out); + } + + else { + lp_build_sample_general(&bld, sampler_index, + newcoords, offsets, + lod_positive, lod_fpart, + ilevel0, ilevel1, + texel_out); + } + } + else { + unsigned j; + 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_texture_state = bld.static_texture_state; + bld4.static_sampler_state = bld.static_sampler_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.base_ptr = bld.base_ptr; + bld4.mip_offsets = bld.mip_offsets; + 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_in_type = lp_type_float(32); + bld4.float_size_in_type.length = dims > 1 ? 4 : 1; + bld4.int_size_in_type = lp_int_type(bld4.float_size_in_type); + bld4.texel_type = bld.texel_type; + bld4.texel_type.length = 4; + + bld4.num_mips = bld4.num_lods = 1; + if ((gallivm_debug & GALLIVM_DEBUG_NO_QUAD_LOD) && + (gallivm_debug & GALLIVM_DEBUG_NO_RHO_APPROX) && + (static_texture_state->target == PIPE_TEXTURE_CUBE) && + (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)) { + bld4.num_mips = type4.length; + bld4.num_lods = type4.length; + } + if (lod_property == LP_SAMPLER_LOD_PER_ELEMENT && + (explicit_lod || lod_bias || derivs)) { + if ((is_fetch && target != PIPE_BUFFER) || + (!is_fetch && mip_filter != PIPE_TEX_MIPFILTER_NONE)) { + bld4.num_mips = type4.length; + bld4.num_lods = type4.length; + } + else if (!is_fetch && min_img_filter != mag_img_filter) { + bld4.num_mips = 1; + bld4.num_lods = type4.length; + } + } + + /* we want native vector size to be able to use our intrinsics */ + bld4.lodf_type = type4; + if (bld4.num_lods != type4.length) { + bld4.lodf_type.length = 1; + } + bld4.lodi_type = lp_int_type(bld4.lodf_type); + bld4.levelf_type = type4; + if (bld4.num_mips != type4.length) { + bld4.levelf_type.length = 1; + } + bld4.leveli_type = lp_int_type(bld4.levelf_type); + bld4.float_size_type = bld4.float_size_in_type; + if (bld4.num_mips > 1) { + bld4.float_size_type.length = bld4.num_mips == type4.length ? + bld4.num_mips * bld4.float_size_in_type.length : + type4.length; + } + bld4.int_size_type = lp_int_type(bld4.float_size_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_in_bld, gallivm, bld4.int_size_in_type); + lp_build_context_init(&bld4.float_size_in_bld, gallivm, bld4.float_size_in_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.levelf_bld, gallivm, bld4.levelf_type); + lp_build_context_init(&bld4.leveli_bld, gallivm, bld4.leveli_type); + lp_build_context_init(&bld4.lodf_bld, gallivm, bld4.lodf_type); + lp_build_context_init(&bld4.lodi_bld, gallivm, bld4.lodi_type); + + for (i = 0; i < num_quads; i++) { + LLVMValueRef s4, t4, r4; + LLVMValueRef lod_positive4, lod_fpart4 = NULL; + LLVMValueRef ilevel04, ilevel14 = NULL; + LLVMValueRef offsets4[4] = { NULL }; + unsigned num_lods = bld4.num_lods; + + s4 = lp_build_extract_range(gallivm, newcoords[0], 4*i, 4); + t4 = lp_build_extract_range(gallivm, newcoords[1], 4*i, 4); + r4 = lp_build_extract_range(gallivm, newcoords[2], 4*i, 4); + + if (offsets[0]) { + offsets4[0] = lp_build_extract_range(gallivm, offsets[0], 4*i, 4); + if (dims > 1) { + offsets4[1] = lp_build_extract_range(gallivm, offsets[1], 4*i, 4); + if (dims > 2) { + offsets4[2] = lp_build_extract_range(gallivm, offsets[2], 4*i, 4); + } + } + } + lod_positive4 = lp_build_extract_range(gallivm, lod_positive, num_lods * i, num_lods); + ilevel04 = bld.num_mips == 1 ? ilevel0 : + lp_build_extract_range(gallivm, ilevel0, num_lods * i, num_lods); + if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) { + ilevel14 = lp_build_extract_range(gallivm, ilevel1, num_lods * i, num_lods); + lod_fpart4 = lp_build_extract_range(gallivm, lod_fpart, num_lods * i, num_lods); + } + + if (use_aos) { + /* do sampling/filtering with fixed pt arithmetic */ + lp_build_sample_aos(&bld4, sampler_index, + s4, t4, r4, offsets4, + lod_positive4, lod_fpart4, + ilevel04, ilevel14, + texelout4); + } + + else { + /* this path is currently unreachable and hence might break easily... */ + LLVMValueRef newcoords4[5]; + newcoords4[0] = s4; + newcoords4[1] = t4; + newcoords4[2] = r4; + newcoords4[3] = lp_build_extract_range(gallivm, newcoords[3], 4*i, 4); + newcoords4[4] = lp_build_extract_range(gallivm, newcoords[4], 4*i, 4); + + lp_build_sample_general(&bld4, sampler_index, + newcoords4, offsets4, + lod_positive4, lod_fpart4, + ilevel04, ilevel14, + texelout4); + } + for (j = 0; j < 4; j++) { + texelouttmp[j][i] = texelout4[j]; + } + } + + for (j = 0; j < 4; j++) { + texel_out[j] = lp_build_concat(gallivm, texelouttmp[j], type4, num_quads); + } + } + } + + if (target != PIPE_BUFFER) { + apply_sampler_swizzle(&bld, texel_out); + } + + /* + * texel type can be a (32bit) int/uint (for pure int formats only), + * however we are expected to always return floats (storage is untyped). + */ + if (!bld.texel_type.floating) { + unsigned chan; + for (chan = 0; chan < 4; chan++) { + texel_out[chan] = LLVMBuildBitCast(builder, texel_out[chan], + lp_build_vec_type(gallivm, type), ""); + } + } +} + +void +lp_build_size_query_soa(struct gallivm_state *gallivm, + const struct lp_static_texture_state *static_state, + struct lp_sampler_dynamic_state *dynamic_state, + struct lp_type int_type, + unsigned texture_unit, + unsigned target, + boolean is_sviewinfo, + enum lp_sampler_lod_property lod_property, + LLVMValueRef explicit_lod, + LLVMValueRef *sizes_out) +{ + LLVMValueRef lod, level, size; + LLVMValueRef first_level = NULL; + int dims, i; + boolean has_array; + unsigned num_lods = 1; + struct lp_build_context bld_int_vec4; + + if (static_state->format == PIPE_FORMAT_NONE) { + /* + * If there's nothing bound, format is NONE, and we must return + * all zero as mandated by d3d10 in this case. + */ + unsigned chan; + LLVMValueRef zero = lp_build_const_vec(gallivm, int_type, 0.0F); + for (chan = 0; chan < 4; chan++) { + sizes_out[chan] = zero; + } + return; } - lp_build_sample_compare(&bld, r, texel_out); + /* + * Do some sanity verification about bound texture and shader dcl target. + * Not entirely sure what's possible but assume array/non-array + * always compatible (probably not ok for OpenGL but d3d10 has no + * distinction of arrays at the resource level). + * Everything else looks bogus (though not entirely sure about rect/2d). + * Currently disabled because it causes assertion failures if there's + * nothing bound (or rather a dummy texture, not that this case would + * return the right values). + */ + if (0 && static_state->target != target) { + if (static_state->target == PIPE_TEXTURE_1D) + assert(target == PIPE_TEXTURE_1D_ARRAY); + else if (static_state->target == PIPE_TEXTURE_1D_ARRAY) + assert(target == PIPE_TEXTURE_1D); + else if (static_state->target == PIPE_TEXTURE_2D) + assert(target == PIPE_TEXTURE_2D_ARRAY); + else if (static_state->target == PIPE_TEXTURE_2D_ARRAY) + assert(target == PIPE_TEXTURE_2D); + else if (static_state->target == PIPE_TEXTURE_CUBE) + assert(target == PIPE_TEXTURE_CUBE_ARRAY); + else if (static_state->target == PIPE_TEXTURE_CUBE_ARRAY) + assert(target == PIPE_TEXTURE_CUBE); + else + assert(0); + } + + dims = texture_dims(target); + + switch (target) { + case PIPE_TEXTURE_1D_ARRAY: + case PIPE_TEXTURE_2D_ARRAY: + has_array = TRUE; + break; + default: + has_array = FALSE; + break; + } + + assert(!int_type.floating); + + lp_build_context_init(&bld_int_vec4, gallivm, lp_type_int_vec(32, 128)); + + if (explicit_lod) { + /* FIXME: this needs to honor per-element lod */ + lod = LLVMBuildExtractElement(gallivm->builder, explicit_lod, lp_build_const_int32(gallivm, 0), ""); + first_level = dynamic_state->first_level(dynamic_state, gallivm, texture_unit); + level = LLVMBuildAdd(gallivm->builder, lod, first_level, "level"); + lod = lp_build_broadcast_scalar(&bld_int_vec4, level); + } else { + lod = bld_int_vec4.zero; + } + + size = bld_int_vec4.undef; + + size = LLVMBuildInsertElement(gallivm->builder, size, + dynamic_state->width(dynamic_state, gallivm, texture_unit), + lp_build_const_int32(gallivm, 0), ""); + + if (dims >= 2) { + size = LLVMBuildInsertElement(gallivm->builder, size, + dynamic_state->height(dynamic_state, gallivm, texture_unit), + lp_build_const_int32(gallivm, 1), ""); + } + + if (dims >= 3) { + size = LLVMBuildInsertElement(gallivm->builder, size, + dynamic_state->depth(dynamic_state, gallivm, texture_unit), + lp_build_const_int32(gallivm, 2), ""); + } + + size = lp_build_minify(&bld_int_vec4, size, lod, TRUE); + + if (has_array) + size = LLVMBuildInsertElement(gallivm->builder, size, + dynamic_state->depth(dynamic_state, gallivm, texture_unit), + lp_build_const_int32(gallivm, dims), ""); + + /* + * d3d10 requires zero for x/y/z values (but not w, i.e. mip levels) + * if level is out of bounds (note this can't cover unbound texture + * here, which also requires returning zero). + */ + if (explicit_lod && is_sviewinfo) { + LLVMValueRef last_level, out, out1; + struct lp_build_context leveli_bld; + + /* everything is scalar for now */ + lp_build_context_init(&leveli_bld, gallivm, lp_type_int_vec(32, 32)); + last_level = dynamic_state->last_level(dynamic_state, gallivm, texture_unit); + + out = lp_build_cmp(&leveli_bld, PIPE_FUNC_LESS, level, first_level); + out1 = lp_build_cmp(&leveli_bld, PIPE_FUNC_GREATER, level, last_level); + out = lp_build_or(&leveli_bld, out, out1); + if (num_lods == 1) { + out = lp_build_broadcast_scalar(&bld_int_vec4, out); + } + else { + /* TODO */ + assert(0); + } + size = lp_build_andnot(&bld_int_vec4, size, out); + } + for (i = 0; i < dims + (has_array ? 1 : 0); i++) { + sizes_out[i] = lp_build_extract_broadcast(gallivm, bld_int_vec4.type, int_type, + size, + lp_build_const_int32(gallivm, i)); + } + if (is_sviewinfo) { + for (; i < 4; i++) { + sizes_out[i] = lp_build_const_vec(gallivm, int_type, 0.0); + } + } + + /* + * if there's no explicit_lod (buffers, rects) queries requiring nr of + * mips would be illegal. + */ + if (is_sviewinfo && explicit_lod) { + struct lp_build_context bld_int_scalar; + LLVMValueRef num_levels; + lp_build_context_init(&bld_int_scalar, gallivm, lp_type_int(32)); + + if (static_state->level_zero_only) { + num_levels = bld_int_scalar.one; + } + else { + LLVMValueRef last_level; + + last_level = dynamic_state->last_level(dynamic_state, gallivm, texture_unit); + num_levels = lp_build_sub(&bld_int_scalar, last_level, first_level); + num_levels = lp_build_add(&bld_int_scalar, num_levels, bld_int_scalar.one); + } + sizes_out[3] = lp_build_broadcast(gallivm, lp_build_vec_type(gallivm, int_type), + num_levels); + } }