#include "pipe/p_defines.h"
#include "pipe/p_state.h"
-#include "util/u_format.h"
+#include "util/format/u_format.h"
#include "util/u_math.h"
+#include "util/u_cpu_detect.h"
#include "lp_bld_arit.h"
#include "lp_bld_const.h"
#include "lp_bld_debug.h"
#include "lp_bld_sample.h"
#include "lp_bld_swizzle.h"
#include "lp_bld_type.h"
+#include "lp_bld_logic.h"
+#include "lp_bld_pack.h"
+#include "lp_bld_quad.h"
+#include "lp_bld_bitarit.h"
/*
*/
#define BRILINEAR_FACTOR 2
-
/**
* Does the given texture wrap mode allow sampling the texture border color?
* XXX maybe move this into gallium util code.
/**
- * Initialize lp_sampler_static_state object with the gallium sampler
- * and texture state.
- * The former is considered to be static and the later dynamic.
+ * Initialize lp_sampler_static_texture_state object with the gallium
+ * texture/sampler_view state (this contains the parts which are
+ * considered static).
*/
void
-lp_sampler_static_state(struct lp_sampler_static_state *state,
- const struct pipe_sampler_view *view,
- const struct pipe_sampler_state *sampler)
+lp_sampler_static_texture_state(struct lp_static_texture_state *state,
+ const struct pipe_sampler_view *view)
{
- const struct pipe_resource *texture = view->texture;
+ const struct pipe_resource *texture;
memset(state, 0, sizeof *state);
- if(!texture)
+ if (!view || !view->texture)
return;
- if(!sampler)
+ texture = view->texture;
+
+ state->format = view->format;
+ state->swizzle_r = view->swizzle_r;
+ state->swizzle_g = view->swizzle_g;
+ state->swizzle_b = view->swizzle_b;
+ state->swizzle_a = view->swizzle_a;
+
+ state->target = view->target;
+ state->pot_width = util_is_power_of_two_or_zero(texture->width0);
+ state->pot_height = util_is_power_of_two_or_zero(texture->height0);
+ state->pot_depth = util_is_power_of_two_or_zero(texture->depth0);
+ state->level_zero_only = !view->u.tex.last_level;
+
+ /*
+ * the layer / element / level parameters are all either dynamic
+ * state or handled transparently wrt execution.
+ */
+}
+
+/**
+ * Initialize lp_sampler_static_texture_state object with the gallium
+ * texture/sampler_view state (this contains the parts which are
+ * considered static).
+ */
+void
+lp_sampler_static_texture_state_image(struct lp_static_texture_state *state,
+ const struct pipe_image_view *view)
+{
+ const struct pipe_resource *resource;
+
+ memset(state, 0, sizeof *state);
+
+ if (!view || !view->resource)
+ return;
+
+ resource = view->resource;
+
+ state->format = view->format;
+ state->swizzle_r = PIPE_SWIZZLE_X;
+ state->swizzle_g = PIPE_SWIZZLE_Y;
+ state->swizzle_b = PIPE_SWIZZLE_Z;
+ state->swizzle_a = PIPE_SWIZZLE_W;
+
+ state->target = view->resource->target;
+ state->pot_width = util_is_power_of_two_or_zero(resource->width0);
+ state->pot_height = util_is_power_of_two_or_zero(resource->height0);
+ state->pot_depth = util_is_power_of_two_or_zero(resource->depth0);
+ state->level_zero_only = 0;
+
+ /*
+ * the layer / element / level parameters are all either dynamic
+ * state or handled transparently wrt execution.
+ */
+}
+
+/**
+ * Initialize lp_sampler_static_sampler_state object with the gallium sampler
+ * state (this contains the parts which are considered static).
+ */
+void
+lp_sampler_static_sampler_state(struct lp_static_sampler_state *state,
+ const struct pipe_sampler_state *sampler)
+{
+ memset(state, 0, sizeof *state);
+
+ if (!sampler)
return;
/*
* regarding 1D/2D/3D/CUBE textures, wrap modes, etc.
*/
- state->format = view->format;
- state->swizzle_r = view->swizzle_r;
- state->swizzle_g = view->swizzle_g;
- state->swizzle_b = view->swizzle_b;
- state->swizzle_a = view->swizzle_a;
-
- state->target = texture->target;
- state->pot_width = util_is_power_of_two(texture->width0);
- state->pot_height = util_is_power_of_two(texture->height0);
- state->pot_depth = util_is_power_of_two(texture->depth0);
-
state->wrap_s = sampler->wrap_s;
state->wrap_t = sampler->wrap_t;
state->wrap_r = sampler->wrap_r;
state->min_img_filter = sampler->min_img_filter;
state->mag_img_filter = sampler->mag_img_filter;
+ state->min_mip_filter = sampler->min_mip_filter;
+ state->seamless_cube_map = sampler->seamless_cube_map;
- if (view->last_level && sampler->max_lod > 0.0f) {
- state->min_mip_filter = sampler->min_mip_filter;
- } else {
- state->min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
+ if (sampler->max_lod > 0.0f) {
+ state->max_lod_pos = 1;
}
- if (state->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
- if (sampler->lod_bias != 0.0f) {
- state->lod_bias_non_zero = 1;
- }
+ if (sampler->lod_bias != 0.0f) {
+ state->lod_bias_non_zero = 1;
+ }
+
+ if (state->min_mip_filter != PIPE_TEX_MIPFILTER_NONE ||
+ state->min_img_filter != state->mag_img_filter) {
/* If min_lod == max_lod we can greatly simplify mipmap selection.
* This is a case that occurs during automatic mipmap generation.
state->apply_min_lod = 1;
}
- if (sampler->max_lod < (float)view->last_level) {
+ /*
+ * XXX this won't do anything with the mesa state tracker which always
+ * sets max_lod to not more than actually present mip maps...
+ */
+ if (sampler->max_lod < (PIPE_MAX_TEXTURE_LEVELS - 1)) {
state->apply_max_lod = 1;
}
}
}
state->normalized_coords = sampler->normalized_coords;
-
- /*
- * FIXME: Handle the remainder of pipe_sampler_view.
- */
}
/**
* Generate code to compute coordinate gradient (rho).
- * \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 derivs partial derivatives of (s, t, r, q) with respect to X and Y
*
- * XXX: The resulting rho is scalar, so we ignore all but the first element of
- * derivatives that are passed by the shader.
+ * The resulting rho has bld->levelf format (per quad or per element).
*/
static LLVMValueRef
lp_build_rho(struct lp_build_sample_context *bld,
- const LLVMValueRef ddx[4],
- const LLVMValueRef ddy[4])
+ unsigned texture_unit,
+ LLVMValueRef s,
+ LLVMValueRef t,
+ LLVMValueRef r,
+ LLVMValueRef cube_rho,
+ const struct lp_derivatives *derivs)
{
- struct lp_build_context *float_size_bld = &bld->float_size_bld;
+ struct gallivm_state *gallivm = bld->gallivm;
+ struct lp_build_context *int_size_bld = &bld->int_size_in_bld;
+ struct lp_build_context *float_size_bld = &bld->float_size_in_bld;
struct lp_build_context *float_bld = &bld->float_bld;
+ struct lp_build_context *coord_bld = &bld->coord_bld;
+ struct lp_build_context *rho_bld = &bld->lodf_bld;
const unsigned dims = bld->dims;
+ LLVMValueRef ddx_ddy[2] = {NULL};
LLVMBuilderRef builder = bld->gallivm->builder;
LLVMTypeRef i32t = LLVMInt32TypeInContext(bld->gallivm->context);
LLVMValueRef index0 = LLVMConstInt(i32t, 0, 0);
LLVMValueRef index1 = LLVMConstInt(i32t, 1, 0);
LLVMValueRef index2 = LLVMConstInt(i32t, 2, 0);
- LLVMValueRef dsdx, dsdy, dtdx, dtdy, drdx, drdy;
- LLVMValueRef rho_x, rho_y;
LLVMValueRef rho_vec;
- LLVMValueRef float_size;
+ LLVMValueRef int_size, float_size;
LLVMValueRef rho;
+ LLVMValueRef first_level, first_level_vec;
+ unsigned length = coord_bld->type.length;
+ unsigned num_quads = length / 4;
+ boolean rho_per_quad = rho_bld->type.length != length;
+ boolean no_rho_opt = bld->no_rho_approx && (dims > 1);
+ unsigned i;
+ LLVMValueRef i32undef = LLVMGetUndef(LLVMInt32TypeInContext(gallivm->context));
+ LLVMValueRef rho_xvec, rho_yvec;
- dsdx = ddx[0];
- dsdy = ddy[0];
+ /* Note that all simplified calculations will only work for isotropic filtering */
- if (dims <= 1) {
- rho_x = dsdx;
- rho_y = dsdy;
- }
- else {
- rho_x = float_size_bld->undef;
- rho_y = float_size_bld->undef;
+ /*
+ * rho calcs are always per quad except for explicit derivs (excluding
+ * the messy cube maps for now) when requested.
+ */
- rho_x = LLVMBuildInsertElement(builder, rho_x, dsdx, index0, "");
- rho_y = LLVMBuildInsertElement(builder, rho_y, dsdy, index0, "");
+ first_level = bld->dynamic_state->first_level(bld->dynamic_state, bld->gallivm,
+ bld->context_ptr, texture_unit);
+ first_level_vec = lp_build_broadcast_scalar(int_size_bld, first_level);
+ int_size = lp_build_minify(int_size_bld, bld->int_size, first_level_vec, TRUE);
+ float_size = lp_build_int_to_float(float_size_bld, int_size);
- dtdx = ddx[1];
- dtdy = ddy[1];
+ if (cube_rho) {
+ LLVMValueRef cubesize;
+ LLVMValueRef index0 = lp_build_const_int32(gallivm, 0);
- rho_x = LLVMBuildInsertElement(builder, rho_x, dtdx, index1, "");
- rho_y = LLVMBuildInsertElement(builder, rho_y, dtdy, index1, "");
+ /*
+ * Cube map code did already everything except size mul and per-quad extraction.
+ * Luckily cube maps are always quadratic!
+ */
+ if (rho_per_quad) {
+ rho = lp_build_pack_aos_scalars(bld->gallivm, coord_bld->type,
+ rho_bld->type, cube_rho, 0);
+ }
+ else {
+ rho = lp_build_swizzle_scalar_aos(coord_bld, cube_rho, 0, 4);
+ }
+ /* Could optimize this for single quad just skip the broadcast */
+ cubesize = lp_build_extract_broadcast(gallivm, bld->float_size_in_type,
+ rho_bld->type, float_size, index0);
+ /* skipping sqrt hence returning rho squared */
+ cubesize = lp_build_mul(rho_bld, cubesize, cubesize);
+ rho = lp_build_mul(rho_bld, cubesize, rho);
+ }
+ else if (derivs) {
+ LLVMValueRef ddmax[3] = { NULL }, ddx[3] = { NULL }, ddy[3] = { NULL };
+ for (i = 0; i < dims; i++) {
+ LLVMValueRef floatdim;
+ LLVMValueRef indexi = lp_build_const_int32(gallivm, i);
- if (dims >= 3) {
- drdx = ddx[2];
- drdy = ddy[2];
+ floatdim = lp_build_extract_broadcast(gallivm, bld->float_size_in_type,
+ coord_bld->type, float_size, indexi);
- rho_x = LLVMBuildInsertElement(builder, rho_x, drdx, index2, "");
- rho_y = LLVMBuildInsertElement(builder, rho_y, drdy, index2, "");
+ /*
+ * note that for rho_per_quad case could reduce math (at some shuffle
+ * cost), but for now use same code to per-pixel lod case.
+ */
+ if (no_rho_opt) {
+ ddx[i] = lp_build_mul(coord_bld, floatdim, derivs->ddx[i]);
+ ddy[i] = lp_build_mul(coord_bld, floatdim, derivs->ddy[i]);
+ ddx[i] = lp_build_mul(coord_bld, ddx[i], ddx[i]);
+ ddy[i] = lp_build_mul(coord_bld, ddy[i], ddy[i]);
+ }
+ else {
+ LLVMValueRef tmpx, tmpy;
+ tmpx = lp_build_abs(coord_bld, derivs->ddx[i]);
+ tmpy = lp_build_abs(coord_bld, derivs->ddy[i]);
+ ddmax[i] = lp_build_max(coord_bld, tmpx, tmpy);
+ ddmax[i] = lp_build_mul(coord_bld, floatdim, ddmax[i]);
+ }
+ }
+ if (no_rho_opt) {
+ rho_xvec = lp_build_add(coord_bld, ddx[0], ddx[1]);
+ rho_yvec = lp_build_add(coord_bld, ddy[0], ddy[1]);
+ if (dims > 2) {
+ rho_xvec = lp_build_add(coord_bld, rho_xvec, ddx[2]);
+ rho_yvec = lp_build_add(coord_bld, rho_yvec, ddy[2]);
+ }
+ rho = lp_build_max(coord_bld, rho_xvec, rho_yvec);
+ /* skipping sqrt hence returning rho squared */
+ }
+ else {
+ rho = ddmax[0];
+ if (dims > 1) {
+ rho = lp_build_max(coord_bld, rho, ddmax[1]);
+ if (dims > 2) {
+ rho = lp_build_max(coord_bld, rho, ddmax[2]);
+ }
+ }
+ }
+ if (rho_per_quad) {
+ /*
+ * rho_vec contains per-pixel rho, convert to scalar per quad.
+ */
+ rho = lp_build_pack_aos_scalars(bld->gallivm, coord_bld->type,
+ rho_bld->type, rho, 0);
}
}
+ else {
+ /*
+ * This looks all a bit complex, but it's not that bad
+ * (the shuffle code makes it look worse than it is).
+ * Still, might not be ideal for all cases.
+ */
+ static const unsigned char swizzle0[] = { /* no-op swizzle */
+ 0, LP_BLD_SWIZZLE_DONTCARE,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+ static const unsigned char swizzle1[] = {
+ 1, LP_BLD_SWIZZLE_DONTCARE,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+ static const unsigned char swizzle2[] = {
+ 2, LP_BLD_SWIZZLE_DONTCARE,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+
+ if (dims < 2) {
+ ddx_ddy[0] = lp_build_packed_ddx_ddy_onecoord(coord_bld, s);
+ }
+ else if (dims >= 2) {
+ ddx_ddy[0] = lp_build_packed_ddx_ddy_twocoord(coord_bld, s, t);
+ if (dims > 2) {
+ ddx_ddy[1] = lp_build_packed_ddx_ddy_onecoord(coord_bld, r);
+ }
+ }
- rho_x = lp_build_abs(float_size_bld, rho_x);
- rho_y = lp_build_abs(float_size_bld, rho_y);
+ if (no_rho_opt) {
+ static const unsigned char swizzle01[] = { /* no-op swizzle */
+ 0, 1,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+ static const unsigned char swizzle23[] = {
+ 2, 3,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+ LLVMValueRef ddx_ddys, ddx_ddyt, floatdim, shuffles[LP_MAX_VECTOR_LENGTH / 4];
+
+ for (i = 0; i < num_quads; i++) {
+ shuffles[i*4+0] = shuffles[i*4+1] = index0;
+ shuffles[i*4+2] = shuffles[i*4+3] = index1;
+ }
+ floatdim = LLVMBuildShuffleVector(builder, float_size, float_size,
+ LLVMConstVector(shuffles, length), "");
+ ddx_ddy[0] = lp_build_mul(coord_bld, ddx_ddy[0], floatdim);
+ ddx_ddy[0] = lp_build_mul(coord_bld, ddx_ddy[0], ddx_ddy[0]);
+ ddx_ddys = lp_build_swizzle_aos(coord_bld, ddx_ddy[0], swizzle01);
+ ddx_ddyt = lp_build_swizzle_aos(coord_bld, ddx_ddy[0], swizzle23);
+ rho_vec = lp_build_add(coord_bld, ddx_ddys, ddx_ddyt);
+
+ if (dims > 2) {
+ static const unsigned char swizzle02[] = {
+ 0, 2,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+ floatdim = lp_build_extract_broadcast(gallivm, bld->float_size_in_type,
+ coord_bld->type, float_size, index2);
+ ddx_ddy[1] = lp_build_mul(coord_bld, ddx_ddy[1], floatdim);
+ ddx_ddy[1] = lp_build_mul(coord_bld, ddx_ddy[1], ddx_ddy[1]);
+ ddx_ddy[1] = lp_build_swizzle_aos(coord_bld, ddx_ddy[1], swizzle02);
+ rho_vec = lp_build_add(coord_bld, rho_vec, ddx_ddy[1]);
+ }
- rho_vec = lp_build_max(float_size_bld, rho_x, rho_y);
+ rho_xvec = lp_build_swizzle_aos(coord_bld, rho_vec, swizzle0);
+ rho_yvec = lp_build_swizzle_aos(coord_bld, rho_vec, swizzle1);
+ rho = lp_build_max(coord_bld, rho_xvec, rho_yvec);
- float_size = lp_build_int_to_float(float_size_bld, bld->int_size);
+ if (rho_per_quad) {
+ rho = lp_build_pack_aos_scalars(bld->gallivm, coord_bld->type,
+ rho_bld->type, rho, 0);
+ }
+ else {
+ rho = lp_build_swizzle_scalar_aos(coord_bld, rho, 0, 4);
+ }
+ /* skipping sqrt hence returning rho squared */
+ }
+ else {
+ ddx_ddy[0] = lp_build_abs(coord_bld, ddx_ddy[0]);
+ if (dims > 2) {
+ ddx_ddy[1] = lp_build_abs(coord_bld, ddx_ddy[1]);
+ }
+ else {
+ ddx_ddy[1] = NULL; /* silence compiler warning */
+ }
- rho_vec = lp_build_mul(float_size_bld, rho_vec, float_size);
+ if (dims < 2) {
+ rho_xvec = lp_build_swizzle_aos(coord_bld, ddx_ddy[0], swizzle0);
+ rho_yvec = lp_build_swizzle_aos(coord_bld, ddx_ddy[0], swizzle2);
+ }
+ else if (dims == 2) {
+ static const unsigned char swizzle02[] = {
+ 0, 2,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+ static const unsigned char swizzle13[] = {
+ 1, 3,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+ rho_xvec = lp_build_swizzle_aos(coord_bld, ddx_ddy[0], swizzle02);
+ rho_yvec = lp_build_swizzle_aos(coord_bld, ddx_ddy[0], swizzle13);
+ }
+ else {
+ LLVMValueRef shuffles1[LP_MAX_VECTOR_LENGTH];
+ LLVMValueRef shuffles2[LP_MAX_VECTOR_LENGTH];
+ assert(dims == 3);
+ for (i = 0; i < num_quads; i++) {
+ shuffles1[4*i + 0] = lp_build_const_int32(gallivm, 4*i);
+ shuffles1[4*i + 1] = lp_build_const_int32(gallivm, 4*i + 2);
+ shuffles1[4*i + 2] = lp_build_const_int32(gallivm, length + 4*i);
+ shuffles1[4*i + 3] = i32undef;
+ shuffles2[4*i + 0] = lp_build_const_int32(gallivm, 4*i + 1);
+ shuffles2[4*i + 1] = lp_build_const_int32(gallivm, 4*i + 3);
+ shuffles2[4*i + 2] = lp_build_const_int32(gallivm, length + 4*i + 2);
+ shuffles2[4*i + 3] = i32undef;
+ }
+ rho_xvec = LLVMBuildShuffleVector(builder, ddx_ddy[0], ddx_ddy[1],
+ LLVMConstVector(shuffles1, length), "");
+ rho_yvec = LLVMBuildShuffleVector(builder, ddx_ddy[0], ddx_ddy[1],
+ LLVMConstVector(shuffles2, length), "");
+ }
- if (dims <= 1) {
- rho = rho_vec;
- }
- else {
- if (dims >= 2) {
- LLVMValueRef rho_s, rho_t, rho_r;
+ rho_vec = lp_build_max(coord_bld, rho_xvec, rho_yvec);
+
+ if (bld->coord_type.length > 4) {
+ /* expand size to each quad */
+ if (dims > 1) {
+ /* could use some broadcast_vector helper for this? */
+ LLVMValueRef src[LP_MAX_VECTOR_LENGTH/4];
+ for (i = 0; i < num_quads; i++) {
+ src[i] = float_size;
+ }
+ float_size = lp_build_concat(bld->gallivm, src, float_size_bld->type, num_quads);
+ }
+ else {
+ float_size = lp_build_broadcast_scalar(coord_bld, float_size);
+ }
+ rho_vec = lp_build_mul(coord_bld, rho_vec, float_size);
- rho_s = LLVMBuildExtractElement(builder, rho_vec, index0, "");
- rho_t = LLVMBuildExtractElement(builder, rho_vec, index1, "");
+ if (dims <= 1) {
+ rho = rho_vec;
+ }
+ else {
+ if (dims >= 2) {
+ LLVMValueRef rho_s, rho_t, rho_r;
+
+ rho_s = lp_build_swizzle_aos(coord_bld, rho_vec, swizzle0);
+ rho_t = lp_build_swizzle_aos(coord_bld, rho_vec, swizzle1);
- rho = lp_build_max(float_bld, rho_s, rho_t);
+ rho = lp_build_max(coord_bld, rho_s, rho_t);
- if (dims >= 3) {
- rho_r = LLVMBuildExtractElement(builder, rho_vec, index0, "");
- rho = lp_build_max(float_bld, rho, rho_r);
+ if (dims >= 3) {
+ rho_r = lp_build_swizzle_aos(coord_bld, rho_vec, swizzle2);
+ rho = lp_build_max(coord_bld, rho, rho_r);
+ }
+ }
+ }
+ if (rho_per_quad) {
+ rho = lp_build_pack_aos_scalars(bld->gallivm, coord_bld->type,
+ rho_bld->type, rho, 0);
+ }
+ else {
+ rho = lp_build_swizzle_scalar_aos(coord_bld, rho, 0, 4);
+ }
+ }
+ else {
+ if (dims <= 1) {
+ rho_vec = LLVMBuildExtractElement(builder, rho_vec, index0, "");
+ }
+ rho_vec = lp_build_mul(float_size_bld, rho_vec, float_size);
+
+ if (dims <= 1) {
+ rho = rho_vec;
+ }
+ else {
+ if (dims >= 2) {
+ LLVMValueRef rho_s, rho_t, rho_r;
+
+ rho_s = LLVMBuildExtractElement(builder, rho_vec, index0, "");
+ rho_t = LLVMBuildExtractElement(builder, rho_vec, index1, "");
+
+ rho = lp_build_max(float_bld, rho_s, rho_t);
+
+ if (dims >= 3) {
+ rho_r = LLVMBuildExtractElement(builder, rho_vec, index2, "");
+ rho = lp_build_max(float_bld, rho, rho_r);
+ }
+ }
+ }
+ if (!rho_per_quad) {
+ rho = lp_build_broadcast_scalar(rho_bld, rho);
+ }
}
}
}
lp_build_ifloor_fract(bld, lod, out_lod_ipart, &lod_fpart);
- lod_fpart = lp_build_mul(bld, lod_fpart,
- lp_build_const_vec(bld->gallivm, bld->type, factor));
-
- lod_fpart = lp_build_add(bld, lod_fpart,
+ lod_fpart = lp_build_mad(bld, lod_fpart,
+ lp_build_const_vec(bld->gallivm, bld->type, factor),
lp_build_const_vec(bld->gallivm, bld->type, post_offset));
/*
* Combined log2 and brilinear lod computation.
*
* It's in all identical to calling lp_build_fast_log2() and
- * lp_build_brilinear_lod() above, but by combining we can compute the interger
+ * lp_build_brilinear_lod() above, but by combining we can compute the integer
* and fractional part independently.
*/
static void
/*
* The pre factor will make the intersections with the exact powers of two
- * happen precisely where we want then to be, which means that the integer
+ * happen precisely where we want them to be, which means that the integer
* part will not need any post adjustments.
*/
rho = lp_build_mul(bld, rho,
/* fpart = rho / 2**ipart */
lod_fpart = lp_build_extract_mantissa(bld, rho);
- lod_fpart = lp_build_mul(bld, lod_fpart,
- lp_build_const_vec(bld->gallivm, bld->type, factor));
-
- lod_fpart = lp_build_add(bld, lod_fpart,
+ lod_fpart = lp_build_mad(bld, lod_fpart,
+ lp_build_const_vec(bld->gallivm, bld->type, factor),
lp_build_const_vec(bld->gallivm, bld->type, post_offset));
/*
}
+/**
+ * Fast implementation of iround(log2(sqrt(x))), based on
+ * log2(x^n) == n*log2(x).
+ *
+ * Gives accurate results all the time.
+ * (Could be trivially extended to handle other power-of-two roots.)
+ */
+static LLVMValueRef
+lp_build_ilog2_sqrt(struct lp_build_context *bld,
+ LLVMValueRef x)
+{
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ LLVMValueRef ipart;
+ struct lp_type i_type = lp_int_type(bld->type);
+ LLVMValueRef one = lp_build_const_int_vec(bld->gallivm, i_type, 1);
+
+ assert(bld->type.floating);
+
+ assert(lp_check_value(bld->type, x));
+
+ /* ipart = log2(x) + 0.5 = 0.5*(log2(x^2) + 1.0) */
+ ipart = lp_build_extract_exponent(bld, x, 1);
+ ipart = LLVMBuildAShr(builder, ipart, one, "");
+
+ return ipart;
+}
+
+
/**
* Generate code to compute texture level of detail (lambda).
- * \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 derivs partial derivatives of (s, t, r, q) with respect to X and Y
* \param lod_bias optional float vector with the shader lod bias
* \param explicit_lod optional float vector with the explicit lod
- * \param width scalar int texture width
- * \param height scalar int texture height
- * \param depth scalar int texture depth
+ * \param cube_rho rho calculated by cube coord mapping (optional)
+ * \param out_lod_ipart integer part of lod
+ * \param out_lod_fpart float part of lod (never larger than 1 but may be negative)
+ * \param out_lod_positive (mask) if lod is positive (i.e. texture is minified)
*
- * XXX: The resulting lod is scalar, so ignore all but the first element of
- * derivatives, lod_bias, etc that are passed by the shader.
+ * The resulting lod can be scalar per quad or be per element.
*/
void
lp_build_lod_selector(struct lp_build_sample_context *bld,
- unsigned unit,
- const LLVMValueRef ddx[4],
- const LLVMValueRef ddy[4],
+ boolean is_lodq,
+ unsigned texture_unit,
+ unsigned sampler_unit,
+ LLVMValueRef s,
+ LLVMValueRef t,
+ LLVMValueRef r,
+ LLVMValueRef cube_rho,
+ const struct lp_derivatives *derivs,
LLVMValueRef lod_bias, /* optional */
LLVMValueRef explicit_lod, /* optional */
unsigned mip_filter,
+ LLVMValueRef *out_lod,
LLVMValueRef *out_lod_ipart,
- LLVMValueRef *out_lod_fpart)
+ LLVMValueRef *out_lod_fpart,
+ LLVMValueRef *out_lod_positive)
{
LLVMBuilderRef builder = bld->gallivm->builder;
- struct lp_build_context *float_bld = &bld->float_bld;
+ struct lp_sampler_dynamic_state *dynamic_state = bld->dynamic_state;
+ struct lp_build_context *lodf_bld = &bld->lodf_bld;
LLVMValueRef lod;
- *out_lod_ipart = bld->int_bld.zero;
- *out_lod_fpart = bld->float_bld.zero;
+ *out_lod_ipart = bld->lodi_bld.zero;
+ *out_lod_positive = bld->lodi_bld.zero;
+ *out_lod_fpart = lodf_bld->zero;
- if (bld->static_state->min_max_lod_equal) {
+ /*
+ * For determining min/mag, we follow GL 4.1 spec, 3.9.12 Texture Magnification:
+ * "Implementations may either unconditionally assume c = 0 for the minification
+ * vs. magnification switch-over point, or may choose to make c depend on the
+ * combination of minification and magnification modes as follows: if the
+ * magnification filter is given by LINEAR and the minification filter is given
+ * by NEAREST_MIPMAP_NEAREST or NEAREST_MIPMAP_LINEAR, then c = 0.5. This is
+ * done to ensure that a minified texture does not appear "sharper" than a
+ * magnified texture. Otherwise c = 0."
+ * And 3.9.11 Texture Minification:
+ * "If lod is less than or equal to the constant c (see section 3.9.12) the
+ * texture is said to be magnified; if it is greater, the texture is minified."
+ * So, using 0 as switchover point always, and using magnification for lod == 0.
+ * Note that the always c = 0 behavior is new (first appearing in GL 3.1 spec),
+ * old GL versions required 0.5 for the modes listed above.
+ * I have no clue about the (undocumented) wishes of d3d9/d3d10 here!
+ */
+
+ if (bld->static_sampler_state->min_max_lod_equal && !is_lodq) {
/* User is forcing sampling from a particular mipmap level.
* This is hit during mipmap generation.
*/
LLVMValueRef min_lod =
- bld->dynamic_state->min_lod(bld->dynamic_state, bld->gallivm, unit);
+ dynamic_state->min_lod(dynamic_state, bld->gallivm,
+ bld->context_ptr, sampler_unit);
- lod = min_lod;
+ lod = lp_build_broadcast_scalar(lodf_bld, min_lod);
}
else {
- LLVMValueRef sampler_lod_bias =
- bld->dynamic_state->lod_bias(bld->dynamic_state, bld->gallivm, unit);
- LLVMValueRef index0 = lp_build_const_int32(bld->gallivm, 0);
-
if (explicit_lod) {
- lod = LLVMBuildExtractElement(builder, explicit_lod,
- index0, "");
+ if (bld->num_lods != bld->coord_type.length)
+ lod = lp_build_pack_aos_scalars(bld->gallivm, bld->coord_bld.type,
+ lodf_bld->type, explicit_lod, 0);
+ else
+ lod = explicit_lod;
}
else {
LLVMValueRef rho;
+ boolean rho_squared = (bld->no_rho_approx &&
+ (bld->dims > 1)) || cube_rho;
- rho = lp_build_rho(bld, ddx, ddy);
+ rho = lp_build_rho(bld, texture_unit, s, t, r, cube_rho, derivs);
/*
* Compute lod = log2(rho)
*/
- if (!lod_bias &&
- !bld->static_state->lod_bias_non_zero &&
- !bld->static_state->apply_max_lod &&
- !bld->static_state->apply_min_lod) {
+ if (!lod_bias && !is_lodq &&
+ !bld->static_sampler_state->lod_bias_non_zero &&
+ !bld->static_sampler_state->apply_max_lod &&
+ !bld->static_sampler_state->apply_min_lod) {
/*
* Special case when there are no post-log2 adjustments, which
* saves instructions but keeping the integer and fractional lod
if (mip_filter == PIPE_TEX_MIPFILTER_NONE ||
mip_filter == PIPE_TEX_MIPFILTER_NEAREST) {
- *out_lod_ipart = lp_build_ilog2(float_bld, rho);
- *out_lod_fpart = bld->float_bld.zero;
+ /*
+ * Don't actually need both values all the time, lod_ipart is
+ * needed for nearest mipfilter, lod_positive if min != mag.
+ */
+ if (rho_squared) {
+ *out_lod_ipart = lp_build_ilog2_sqrt(lodf_bld, rho);
+ }
+ else {
+ *out_lod_ipart = lp_build_ilog2(lodf_bld, rho);
+ }
+ *out_lod_positive = lp_build_cmp(lodf_bld, PIPE_FUNC_GREATER,
+ rho, lodf_bld->one);
return;
}
if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR &&
- !(gallivm_debug & GALLIVM_DEBUG_NO_BRILINEAR)) {
- lp_build_brilinear_rho(float_bld, rho, BRILINEAR_FACTOR,
+ !bld->no_brilinear && !rho_squared) {
+ /*
+ * This can't work if rho is squared. Not sure if it could be
+ * fixed while keeping it worthwile, could also do sqrt here
+ * but brilinear and no_rho_opt seems like a combination not
+ * making much sense anyway so just use ordinary path below.
+ */
+ lp_build_brilinear_rho(lodf_bld, rho, BRILINEAR_FACTOR,
out_lod_ipart, out_lod_fpart);
+ *out_lod_positive = lp_build_cmp(lodf_bld, PIPE_FUNC_GREATER,
+ rho, lodf_bld->one);
return;
}
}
if (0) {
- lod = lp_build_log2(float_bld, rho);
+ lod = lp_build_log2(lodf_bld, rho);
}
else {
- lod = lp_build_fast_log2(float_bld, rho);
+ lod = lp_build_fast_log2(lodf_bld, rho);
+ }
+ if (rho_squared) {
+ /* log2(x^2) == 0.5*log2(x) */
+ lod = lp_build_mul(lodf_bld, lod,
+ lp_build_const_vec(bld->gallivm, lodf_bld->type, 0.5F));
}
/* add shader lod bias */
if (lod_bias) {
- lod_bias = LLVMBuildExtractElement(builder, lod_bias,
- index0, "");
+ if (bld->num_lods != bld->coord_type.length)
+ lod_bias = lp_build_pack_aos_scalars(bld->gallivm, bld->coord_bld.type,
+ lodf_bld->type, lod_bias, 0);
lod = LLVMBuildFAdd(builder, lod, lod_bias, "shader_lod_bias");
}
}
/* add sampler lod bias */
- if (bld->static_state->lod_bias_non_zero)
+ if (bld->static_sampler_state->lod_bias_non_zero) {
+ LLVMValueRef sampler_lod_bias =
+ dynamic_state->lod_bias(dynamic_state, bld->gallivm,
+ bld->context_ptr, sampler_unit);
+ sampler_lod_bias = lp_build_broadcast_scalar(lodf_bld,
+ sampler_lod_bias);
lod = LLVMBuildFAdd(builder, lod, sampler_lod_bias, "sampler_lod_bias");
+ }
+ if (is_lodq) {
+ *out_lod = lod;
+ }
/* clamp lod */
- if (bld->static_state->apply_max_lod) {
+ if (bld->static_sampler_state->apply_max_lod) {
LLVMValueRef max_lod =
- bld->dynamic_state->max_lod(bld->dynamic_state, bld->gallivm, unit);
+ dynamic_state->max_lod(dynamic_state, bld->gallivm,
+ bld->context_ptr, sampler_unit);
+ max_lod = lp_build_broadcast_scalar(lodf_bld, max_lod);
- lod = lp_build_min(float_bld, lod, max_lod);
+ lod = lp_build_min(lodf_bld, lod, max_lod);
}
- if (bld->static_state->apply_min_lod) {
+ if (bld->static_sampler_state->apply_min_lod) {
LLVMValueRef min_lod =
- bld->dynamic_state->min_lod(bld->dynamic_state, bld->gallivm, unit);
+ dynamic_state->min_lod(dynamic_state, bld->gallivm,
+ bld->context_ptr, sampler_unit);
+ min_lod = lp_build_broadcast_scalar(lodf_bld, min_lod);
- lod = lp_build_max(float_bld, lod, min_lod);
+ lod = lp_build_max(lodf_bld, lod, min_lod);
+ }
+
+ if (is_lodq) {
+ *out_lod_fpart = lod;
+ return;
}
}
+ *out_lod_positive = lp_build_cmp(lodf_bld, PIPE_FUNC_GREATER,
+ lod, lodf_bld->zero);
+
if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
- if (!(gallivm_debug & GALLIVM_DEBUG_NO_BRILINEAR)) {
- lp_build_brilinear_lod(float_bld, lod, BRILINEAR_FACTOR,
+ if (!bld->no_brilinear) {
+ lp_build_brilinear_lod(lodf_bld, lod, BRILINEAR_FACTOR,
out_lod_ipart, out_lod_fpart);
}
else {
- lp_build_ifloor_fract(float_bld, lod, out_lod_ipart, out_lod_fpart);
+ lp_build_ifloor_fract(lodf_bld, lod, out_lod_ipart, out_lod_fpart);
}
lp_build_name(*out_lod_fpart, "lod_fpart");
}
else {
- *out_lod_ipart = lp_build_iround(float_bld, lod);
+ *out_lod_ipart = lp_build_iround(lodf_bld, lod);
}
lp_build_name(*out_lod_ipart, "lod_ipart");
/**
- * For PIPE_TEX_MIPFILTER_NEAREST, convert float LOD to integer
- * mipmap level index.
- * Note: this is all scalar code.
- * \param lod scalar float texture level of detail
- * \param level_out returns integer
+ * For PIPE_TEX_MIPFILTER_NEAREST, convert int part of lod
+ * to actual mip level.
+ * Note: this is all scalar per quad code.
+ * \param lod_ipart int texture level of detail
+ * \param level_out returns integer
+ * \param out_of_bounds returns per coord out_of_bounds mask if provided
*/
void
lp_build_nearest_mip_level(struct lp_build_sample_context *bld,
- unsigned unit,
+ unsigned texture_unit,
LLVMValueRef lod_ipart,
- LLVMValueRef *level_out)
+ LLVMValueRef *level_out,
+ LLVMValueRef *out_of_bounds)
{
- struct lp_build_context *int_bld = &bld->int_bld;
- LLVMValueRef last_level, level;
-
- LLVMValueRef zero = lp_build_const_int32(bld->gallivm, 0);
-
- last_level = bld->dynamic_state->last_level(bld->dynamic_state,
- bld->gallivm, unit);
-
- /* convert float lod to integer */
- level = lod_ipart;
+ struct lp_build_context *leveli_bld = &bld->leveli_bld;
+ struct lp_sampler_dynamic_state *dynamic_state = bld->dynamic_state;
+ LLVMValueRef first_level, last_level, level;
+
+ first_level = dynamic_state->first_level(dynamic_state, bld->gallivm,
+ bld->context_ptr, texture_unit);
+ last_level = dynamic_state->last_level(dynamic_state, bld->gallivm,
+ bld->context_ptr, texture_unit);
+ first_level = lp_build_broadcast_scalar(leveli_bld, first_level);
+ last_level = lp_build_broadcast_scalar(leveli_bld, last_level);
+
+ level = lp_build_add(leveli_bld, lod_ipart, first_level);
+
+ if (out_of_bounds) {
+ LLVMValueRef out, out1;
+ 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 (bld->num_mips == bld->coord_bld.type.length) {
+ *out_of_bounds = out;
+ }
+ else if (bld->num_mips == 1) {
+ *out_of_bounds = lp_build_broadcast_scalar(&bld->int_coord_bld, out);
+ }
+ else {
+ assert(bld->num_mips == bld->coord_bld.type.length / 4);
+ *out_of_bounds = lp_build_unpack_broadcast_aos_scalars(bld->gallivm,
+ leveli_bld->type,
+ bld->int_coord_bld.type,
+ out);
+ }
+ level = lp_build_andnot(&bld->int_coord_bld, level, *out_of_bounds);
+ *level_out = level;
+ }
+ else {
+ /* clamp level to legal range of levels */
+ *level_out = lp_build_clamp(leveli_bld, level, first_level, last_level);
- /* clamp level to legal range of levels */
- *level_out = lp_build_clamp(int_bld, level, zero, last_level);
+ }
}
/**
- * For PIPE_TEX_MIPFILTER_LINEAR, convert float LOD to integer to
- * two (adjacent) mipmap level indexes. Later, we'll sample from those
- * two mipmap levels and interpolate between them.
+ * For PIPE_TEX_MIPFILTER_LINEAR, convert per-quad (or per element) int LOD(s)
+ * to two (per-quad) (adjacent) mipmap level indexes, and fix up float lod
+ * part accordingly.
+ * Later, we'll sample from those two mipmap levels and interpolate between them.
*/
void
lp_build_linear_mip_levels(struct lp_build_sample_context *bld,
- unsigned unit,
+ unsigned texture_unit,
LLVMValueRef lod_ipart,
LLVMValueRef *lod_fpart_inout,
LLVMValueRef *level0_out,
LLVMValueRef *level1_out)
{
LLVMBuilderRef builder = bld->gallivm->builder;
- struct lp_build_context *int_bld = &bld->int_bld;
- struct lp_build_context *float_bld = &bld->float_bld;
- LLVMValueRef last_level;
+ struct lp_sampler_dynamic_state *dynamic_state = bld->dynamic_state;
+ struct lp_build_context *leveli_bld = &bld->leveli_bld;
+ struct lp_build_context *levelf_bld = &bld->levelf_bld;
+ LLVMValueRef first_level, last_level;
LLVMValueRef clamp_min;
LLVMValueRef clamp_max;
- *level0_out = lod_ipart;
- *level1_out = lp_build_add(int_bld, lod_ipart, int_bld->one);
+ assert(bld->num_lods == bld->num_mips);
- last_level = bld->dynamic_state->last_level(bld->dynamic_state,
- bld->gallivm, unit);
+ first_level = dynamic_state->first_level(dynamic_state, bld->gallivm,
+ bld->context_ptr, texture_unit);
+ last_level = dynamic_state->last_level(dynamic_state, bld->gallivm,
+ bld->context_ptr, texture_unit);
+ first_level = lp_build_broadcast_scalar(leveli_bld, first_level);
+ last_level = lp_build_broadcast_scalar(leveli_bld, last_level);
+
+ *level0_out = lp_build_add(leveli_bld, lod_ipart, first_level);
+ *level1_out = lp_build_add(leveli_bld, *level0_out, leveli_bld->one);
/*
- * Clamp both lod_ipart and lod_ipart + 1 to [0, last_level], with the
- * minimum number of comparisons, and zeroing lod_fpart in the extreme
+ * Clamp both *level0_out and *level1_out to [first_level, last_level], with
+ * the minimum number of comparisons, and zeroing lod_fpart in the extreme
* ends in the process.
*/
- /* lod_ipart < 0 */
+ /* *level0_out < first_level */
clamp_min = LLVMBuildICmp(builder, LLVMIntSLT,
- lod_ipart, int_bld->zero,
- "clamp_lod_to_zero");
+ *level0_out, first_level,
+ "clamp_lod_to_first");
*level0_out = LLVMBuildSelect(builder, clamp_min,
- int_bld->zero, *level0_out, "");
+ first_level, *level0_out, "");
*level1_out = LLVMBuildSelect(builder, clamp_min,
- int_bld->zero, *level1_out, "");
+ first_level, *level1_out, "");
*lod_fpart_inout = LLVMBuildSelect(builder, clamp_min,
- float_bld->zero, *lod_fpart_inout, "");
+ levelf_bld->zero, *lod_fpart_inout, "");
- /* lod_ipart >= last_level */
+ /* *level0_out >= last_level */
clamp_max = LLVMBuildICmp(builder, LLVMIntSGE,
- lod_ipart, last_level,
+ *level0_out, last_level,
"clamp_lod_to_last");
*level0_out = LLVMBuildSelect(builder, clamp_max,
last_level, *level1_out, "");
*lod_fpart_inout = LLVMBuildSelect(builder, clamp_max,
- float_bld->zero, *lod_fpart_inout, "");
+ levelf_bld->zero, *lod_fpart_inout, "");
- lp_build_name(*level0_out, "sampler%u_miplevel0", unit);
- lp_build_name(*level1_out, "sampler%u_miplevel1", unit);
- lp_build_name(*lod_fpart_inout, "sampler%u_mipweight", unit);
+ lp_build_name(*level0_out, "texture%u_miplevel0", texture_unit);
+ lp_build_name(*level1_out, "texture%u_miplevel1", texture_unit);
+ lp_build_name(*lod_fpart_inout, "texture%u_mipweight", texture_unit);
}
/**
* Return pointer to a single mipmap level.
- * \param data_array array of pointers to mipmap levels
* \param level integer mipmap level
*/
LLVMValueRef
LLVMValueRef level)
{
LLVMBuilderRef builder = bld->gallivm->builder;
- LLVMValueRef indexes[2], data_ptr;
+ LLVMValueRef indexes[2], data_ptr, mip_offset;
indexes[0] = lp_build_const_int32(bld->gallivm, 0);
indexes[1] = level;
- data_ptr = LLVMBuildGEP(builder, bld->data_array, indexes, 2, "");
- data_ptr = LLVMBuildLoad(builder, data_ptr, "");
+ mip_offset = LLVMBuildGEP(builder, bld->mip_offsets, indexes, 2, "");
+ mip_offset = LLVMBuildLoad(builder, mip_offset, "");
+ data_ptr = LLVMBuildGEP(builder, bld->base_ptr, &mip_offset, 1, "");
return data_ptr;
}
-
+/**
+ * Return (per-pixel) offsets to mip levels.
+ * \param level integer mipmap level
+ */
LLVMValueRef
-lp_build_get_const_mipmap_level(struct lp_build_sample_context *bld,
- int level)
+lp_build_get_mip_offsets(struct lp_build_sample_context *bld,
+ LLVMValueRef level)
{
- LLVMValueRef lvl = lp_build_const_int32(bld->gallivm, level);
- return lp_build_get_mipmap_level(bld, lvl);
+ LLVMBuilderRef builder = bld->gallivm->builder;
+ LLVMValueRef indexes[2], offsets, offset1;
+
+ indexes[0] = lp_build_const_int32(bld->gallivm, 0);
+ if (bld->num_mips == 1) {
+ indexes[1] = level;
+ offset1 = LLVMBuildGEP(builder, bld->mip_offsets, indexes, 2, "");
+ offset1 = LLVMBuildLoad(builder, offset1, "");
+ offsets = lp_build_broadcast_scalar(&bld->int_coord_bld, offset1);
+ }
+ else if (bld->num_mips == bld->coord_bld.type.length / 4) {
+ unsigned i;
+
+ offsets = bld->int_coord_bld.undef;
+ for (i = 0; i < bld->num_mips; i++) {
+ LLVMValueRef indexi = lp_build_const_int32(bld->gallivm, i);
+ LLVMValueRef indexo = lp_build_const_int32(bld->gallivm, 4 * i);
+ indexes[1] = LLVMBuildExtractElement(builder, level, indexi, "");
+ offset1 = LLVMBuildGEP(builder, bld->mip_offsets, indexes, 2, "");
+ offset1 = LLVMBuildLoad(builder, offset1, "");
+ offsets = LLVMBuildInsertElement(builder, offsets, offset1, indexo, "");
+ }
+ offsets = lp_build_swizzle_scalar_aos(&bld->int_coord_bld, offsets, 0, 4);
+ }
+ else {
+ unsigned i;
+
+ assert (bld->num_mips == bld->coord_bld.type.length);
+
+ offsets = bld->int_coord_bld.undef;
+ for (i = 0; i < bld->num_mips; i++) {
+ LLVMValueRef indexi = lp_build_const_int32(bld->gallivm, i);
+ indexes[1] = LLVMBuildExtractElement(builder, level, indexi, "");
+ offset1 = LLVMBuildGEP(builder, bld->mip_offsets, indexes, 2, "");
+ offset1 = LLVMBuildLoad(builder, offset1, "");
+ offsets = LLVMBuildInsertElement(builder, offsets, offset1, indexi, "");
+ }
+ }
+ return offsets;
}
/**
* Codegen equivalent for u_minify().
+ * @param lod_scalar if lod is a (broadcasted) scalar
* Return max(1, base_size >> level);
*/
-static LLVMValueRef
+LLVMValueRef
lp_build_minify(struct lp_build_context *bld,
LLVMValueRef base_size,
- LLVMValueRef level)
+ LLVMValueRef level,
+ boolean lod_scalar)
{
+ LLVMBuilderRef builder = bld->gallivm->builder;
assert(lp_check_value(bld->type, base_size));
assert(lp_check_value(bld->type, level));
return base_size;
}
else {
- LLVMValueRef size =
- LLVMBuildLShr(bld->builder, base_size, level, "minify");
+ LLVMValueRef size;
assert(bld->type.sign);
- size = lp_build_max(bld, size, bld->one);
+ if (lod_scalar ||
+ (util_cpu_caps.has_avx2 || !util_cpu_caps.has_sse)) {
+ size = LLVMBuildLShr(builder, base_size, level, "minify");
+ size = lp_build_max(bld, size, bld->one);
+ }
+ else {
+ /*
+ * emulate shift with float mul, since intel "forgot" shifts with
+ * per-element shift count until avx2, which results in terrible
+ * scalar extraction (both count and value), scalar shift,
+ * vector reinsertion. Should not be an issue on any non-x86 cpu
+ * with a vector instruction set.
+ * On cpus with AMD's XOP this should also be unnecessary but I'm
+ * not sure if llvm would emit this with current flags.
+ */
+ LLVMValueRef const127, const23, lf;
+ struct lp_type ftype;
+ struct lp_build_context fbld;
+ ftype = lp_type_float_vec(32, bld->type.length * bld->type.width);
+ lp_build_context_init(&fbld, bld->gallivm, ftype);
+ const127 = lp_build_const_int_vec(bld->gallivm, bld->type, 127);
+ const23 = lp_build_const_int_vec(bld->gallivm, bld->type, 23);
+
+ /* calculate 2^(-level) float */
+ lf = lp_build_sub(bld, const127, level);
+ lf = lp_build_shl(bld, lf, const23);
+ lf = LLVMBuildBitCast(builder, lf, fbld.vec_type, "");
+
+ /* finish shift operation by doing float mul */
+ base_size = lp_build_int_to_float(&fbld, base_size);
+ size = lp_build_mul(&fbld, base_size, lf);
+ /*
+ * do the max also with floats because
+ * a) non-emulated int max requires sse41
+ * (this is actually a lie as we could cast to 16bit values
+ * as 16bit is sufficient and 16bit int max is sse2)
+ * b) with avx we can do int max 4-wide but float max 8-wide
+ */
+ size = lp_build_max(&fbld, size, fbld.one);
+ size = lp_build_itrunc(&fbld, size);
+ }
return size;
}
}
LLVMValueRef stride_array, LLVMValueRef level)
{
LLVMBuilderRef builder = bld->gallivm->builder;
- LLVMValueRef indexes[2], stride;
+ LLVMValueRef indexes[2], stride, stride1;
indexes[0] = lp_build_const_int32(bld->gallivm, 0);
- indexes[1] = level;
- stride = LLVMBuildGEP(builder, stride_array, indexes, 2, "");
- stride = LLVMBuildLoad(builder, stride, "");
- stride = lp_build_broadcast_scalar(&bld->int_coord_bld, stride);
+ if (bld->num_mips == 1) {
+ indexes[1] = level;
+ stride1 = LLVMBuildGEP(builder, stride_array, indexes, 2, "");
+ stride1 = LLVMBuildLoad(builder, stride1, "");
+ stride = lp_build_broadcast_scalar(&bld->int_coord_bld, stride1);
+ }
+ else if (bld->num_mips == bld->coord_bld.type.length / 4) {
+ LLVMValueRef stride1;
+ unsigned i;
+
+ stride = bld->int_coord_bld.undef;
+ for (i = 0; i < bld->num_mips; i++) {
+ LLVMValueRef indexi = lp_build_const_int32(bld->gallivm, i);
+ LLVMValueRef indexo = lp_build_const_int32(bld->gallivm, 4 * i);
+ indexes[1] = LLVMBuildExtractElement(builder, level, indexi, "");
+ stride1 = LLVMBuildGEP(builder, stride_array, indexes, 2, "");
+ stride1 = LLVMBuildLoad(builder, stride1, "");
+ stride = LLVMBuildInsertElement(builder, stride, stride1, indexo, "");
+ }
+ stride = lp_build_swizzle_scalar_aos(&bld->int_coord_bld, stride, 0, 4);
+ }
+ else {
+ LLVMValueRef stride1;
+ unsigned i;
+
+ assert (bld->num_mips == bld->coord_bld.type.length);
+
+ stride = bld->int_coord_bld.undef;
+ for (i = 0; i < bld->coord_bld.type.length; i++) {
+ LLVMValueRef indexi = lp_build_const_int32(bld->gallivm, i);
+ indexes[1] = LLVMBuildExtractElement(builder, level, indexi, "");
+ stride1 = LLVMBuildGEP(builder, stride_array, indexes, 2, "");
+ stride1 = LLVMBuildLoad(builder, stride1, "");
+ stride = LLVMBuildInsertElement(builder, stride, stride1, indexi, "");
+ }
+ }
return stride;
}
const unsigned dims = bld->dims;
LLVMValueRef ilevel_vec;
- ilevel_vec = lp_build_broadcast_scalar(&bld->int_size_bld, ilevel);
-
/*
* Compute width, height, depth at mipmap level 'ilevel'
*/
- *out_size = lp_build_minify(&bld->int_size_bld, bld->int_size, ilevel_vec);
+ if (bld->num_mips == 1) {
+ ilevel_vec = lp_build_broadcast_scalar(&bld->int_size_bld, ilevel);
+ *out_size = lp_build_minify(&bld->int_size_bld, bld->int_size, ilevel_vec, TRUE);
+ }
+ else {
+ LLVMValueRef int_size_vec;
+ LLVMValueRef tmp[LP_MAX_VECTOR_LENGTH];
+ unsigned num_quads = bld->coord_bld.type.length / 4;
+ unsigned i;
+
+ if (bld->num_mips == num_quads) {
+ /*
+ * XXX: this should be #ifndef SANE_INSTRUCTION_SET.
+ * intel "forgot" the variable shift count instruction until avx2.
+ * A harmless 8x32 shift gets translated into 32 instructions
+ * (16 extracts, 8 scalar shifts, 8 inserts), llvm is apparently
+ * unable to recognize if there are really just 2 different shift
+ * count values. So do the shift 4-wide before expansion.
+ */
+ struct lp_build_context bld4;
+ struct lp_type type4;
+
+ type4 = bld->int_coord_bld.type;
+ type4.length = 4;
+
+ lp_build_context_init(&bld4, bld->gallivm, type4);
+
+ if (bld->dims == 1) {
+ assert(bld->int_size_in_bld.type.length == 1);
+ int_size_vec = lp_build_broadcast_scalar(&bld4,
+ bld->int_size);
+ }
+ else {
+ assert(bld->int_size_in_bld.type.length == 4);
+ int_size_vec = bld->int_size;
+ }
+
+ for (i = 0; i < num_quads; i++) {
+ LLVMValueRef ileveli;
+ LLVMValueRef indexi = lp_build_const_int32(bld->gallivm, i);
+
+ ileveli = lp_build_extract_broadcast(bld->gallivm,
+ bld->leveli_bld.type,
+ bld4.type,
+ ilevel,
+ indexi);
+ tmp[i] = lp_build_minify(&bld4, int_size_vec, ileveli, TRUE);
+ }
+ /*
+ * out_size is [w0, h0, d0, _, w1, h1, d1, _, ...] vector for dims > 1,
+ * [w0, w0, w0, w0, w1, w1, w1, w1, ...] otherwise.
+ */
+ *out_size = lp_build_concat(bld->gallivm,
+ tmp,
+ bld4.type,
+ num_quads);
+ }
+ else {
+ /* FIXME: this is terrible and results in _huge_ vector
+ * (for the dims > 1 case).
+ * Should refactor this (together with extract_image_sizes) and do
+ * something more useful. Could for instance if we have width,height
+ * with 4-wide vector pack all elements into a 8xi16 vector
+ * (on which we can still do useful math) instead of using a 16xi32
+ * vector.
+ * For dims == 1 this will create [w0, w1, w2, w3, ...] vector.
+ * For dims > 1 this will create [w0, h0, d0, _, w1, h1, d1, _, ...] vector.
+ */
+ assert(bld->num_mips == bld->coord_bld.type.length);
+ if (bld->dims == 1) {
+ assert(bld->int_size_in_bld.type.length == 1);
+ int_size_vec = lp_build_broadcast_scalar(&bld->int_coord_bld,
+ bld->int_size);
+ *out_size = lp_build_minify(&bld->int_coord_bld, int_size_vec, ilevel, FALSE);
+ }
+ else {
+ LLVMValueRef ilevel1;
+ for (i = 0; i < bld->num_mips; i++) {
+ LLVMValueRef indexi = lp_build_const_int32(bld->gallivm, i);
+ ilevel1 = lp_build_extract_broadcast(bld->gallivm, bld->int_coord_type,
+ bld->int_size_in_bld.type, ilevel, indexi);
+ tmp[i] = bld->int_size;
+ tmp[i] = lp_build_minify(&bld->int_size_in_bld, tmp[i], ilevel1, TRUE);
+ }
+ *out_size = lp_build_concat(bld->gallivm, tmp,
+ bld->int_size_in_bld.type,
+ bld->num_mips);
+ }
+ }
+ }
if (dims >= 2) {
*row_stride_vec = lp_build_get_level_stride_vec(bld,
bld->row_stride_array,
ilevel);
- if (dims == 3 || bld->static_state->target == PIPE_TEXTURE_CUBE) {
- *img_stride_vec = lp_build_get_level_stride_vec(bld,
- bld->img_stride_array,
- ilevel);
- }
+ }
+ if (dims == 3 || has_layer_coord(bld->static_texture_state->target)) {
+ *img_stride_vec = lp_build_get_level_stride_vec(bld,
+ bld->img_stride_array,
+ ilevel);
}
}
* bld->int_size_type or bld->float_size_type)
* @param coord_type type of the texture size vector (either
* bld->int_coord_type or bld->coord_type)
- * @param int_size vector with the integer texture size (width, height,
- * depth)
+ * @param size vector with the texture size (width, height, depth)
*/
void
lp_build_extract_image_sizes(struct lp_build_sample_context *bld,
- struct lp_type size_type,
+ struct lp_build_context *size_bld,
struct lp_type coord_type,
LLVMValueRef size,
LLVMValueRef *out_width,
{
const unsigned dims = bld->dims;
LLVMTypeRef i32t = LLVMInt32TypeInContext(bld->gallivm->context);
+ struct lp_type size_type = size_bld->type;
+
+ if (bld->num_mips == 1) {
+ *out_width = lp_build_extract_broadcast(bld->gallivm,
+ size_type,
+ coord_type,
+ size,
+ LLVMConstInt(i32t, 0, 0));
+ if (dims >= 2) {
+ *out_height = lp_build_extract_broadcast(bld->gallivm,
+ size_type,
+ coord_type,
+ size,
+ LLVMConstInt(i32t, 1, 0));
+ if (dims == 3) {
+ *out_depth = lp_build_extract_broadcast(bld->gallivm,
+ size_type,
+ coord_type,
+ size,
+ LLVMConstInt(i32t, 2, 0));
+ }
+ }
+ }
+ else {
+ unsigned num_quads = bld->coord_bld.type.length / 4;
- *out_width = lp_build_extract_broadcast(bld->gallivm,
- size_type,
- coord_type,
- size,
- LLVMConstInt(i32t, 0, 0));
- if (dims >= 2) {
- *out_height = lp_build_extract_broadcast(bld->gallivm,
- size_type,
- coord_type,
- size,
- LLVMConstInt(i32t, 1, 0));
- if (dims == 3) {
- *out_depth = lp_build_extract_broadcast(bld->gallivm,
- size_type,
- coord_type,
- size,
- LLVMConstInt(i32t, 2, 0));
+ if (dims == 1) {
+ *out_width = size;
+ }
+ else if (bld->num_mips == num_quads) {
+ *out_width = lp_build_swizzle_scalar_aos(size_bld, size, 0, 4);
+ if (dims >= 2) {
+ *out_height = lp_build_swizzle_scalar_aos(size_bld, size, 1, 4);
+ if (dims == 3) {
+ *out_depth = lp_build_swizzle_scalar_aos(size_bld, size, 2, 4);
+ }
+ }
+ }
+ else {
+ assert(bld->num_mips == bld->coord_type.length);
+ *out_width = lp_build_pack_aos_scalars(bld->gallivm, size_type,
+ coord_type, size, 0);
+ if (dims >= 2) {
+ *out_height = lp_build_pack_aos_scalars(bld->gallivm, size_type,
+ coord_type, size, 1);
+ if (dims == 3) {
+ *out_depth = lp_build_pack_aos_scalars(bld->gallivm, size_type,
+ coord_type, size, 2);
+ }
+ }
}
}
}
/**
* Unnormalize coords.
*
- * @param int_size vector with the integer texture size (width, height, depth)
+ * @param flt_size vector with the integer texture size (width, height, depth)
*/
void
lp_build_unnormalized_coords(struct lp_build_sample_context *bld,
{
const unsigned dims = bld->dims;
LLVMValueRef width;
- LLVMValueRef height;
- LLVMValueRef depth;
+ LLVMValueRef height = NULL;
+ LLVMValueRef depth = NULL;
lp_build_extract_image_sizes(bld,
- bld->float_size_type,
+ &bld->float_size_bld,
bld->coord_type,
flt_size,
&width,
}
}
-
-/** Helper used by lp_build_cube_lookup() */
-static LLVMValueRef
-lp_build_cube_ima(struct lp_build_context *coord_bld, LLVMValueRef coord)
-{
- /* ima = -0.5 / abs(coord); */
- LLVMValueRef negHalf = lp_build_const_vec(coord_bld->gallivm, coord_bld->type, -0.5);
- LLVMValueRef absCoord = lp_build_abs(coord_bld, coord);
- LLVMValueRef ima = lp_build_div(coord_bld, negHalf, absCoord);
- return ima;
-}
-
-
/**
- * Helper used by lp_build_cube_lookup()
- * \param sign scalar +1 or -1
- * \param coord float vector
- * \param ima float vector
+ * Generate new coords and faces for cubemap texels falling off the face.
+ *
+ * @param face face (center) of the pixel
+ * @param x0 lower x coord
+ * @param x1 higher x coord (must be x0 + 1)
+ * @param y0 lower y coord
+ * @param y1 higher y coord (must be x0 + 1)
+ * @param max_coord texture cube (level) size - 1
+ * @param next_faces new face values when falling off
+ * @param next_xcoords new x coord values when falling off
+ * @param next_ycoords new y coord values when falling off
+ *
+ * The arrays hold the new values when under/overflow of
+ * lower x, higher x, lower y, higher y coord would occur (in this order).
+ * next_xcoords/next_ycoords have two entries each (for both new lower and
+ * higher coord).
*/
-static LLVMValueRef
-lp_build_cube_coord(struct lp_build_context *coord_bld,
- LLVMValueRef sign, int negate_coord,
- LLVMValueRef coord, LLVMValueRef ima)
+void
+lp_build_cube_new_coords(struct lp_build_context *ivec_bld,
+ LLVMValueRef face,
+ LLVMValueRef x0,
+ LLVMValueRef x1,
+ LLVMValueRef y0,
+ LLVMValueRef y1,
+ LLVMValueRef max_coord,
+ LLVMValueRef next_faces[4],
+ LLVMValueRef next_xcoords[4][2],
+ LLVMValueRef next_ycoords[4][2])
{
- /* return negate(coord) * ima * sign + 0.5; */
- LLVMValueRef half = lp_build_const_vec(coord_bld->gallivm, coord_bld->type, 0.5);
- LLVMValueRef res;
+ /*
+ * Lookup tables aren't nice for simd code hence try some logic here.
+ * (Note that while it would not be necessary to do per-sample (4) lookups
+ * when using a LUT as it's impossible that texels fall off of positive
+ * and negative edges simultaneously, it would however be necessary to
+ * do 2 lookups for corner handling as in this case texels both fall off
+ * of x and y axes.)
+ */
+ /*
+ * Next faces (for face 012345):
+ * x < 0.0 : 451110
+ * x >= 1.0 : 540001
+ * y < 0.0 : 225422
+ * y >= 1.0 : 334533
+ * Hence nfx+ (and nfy+) == nfx- (nfy-) xor 1
+ * nfx-: face > 1 ? (face == 5 ? 0 : 1) : (4 + face & 1)
+ * nfy+: face & ~4 > 1 ? face + 2 : 3;
+ * This could also use pshufb instead, but would need (manually coded)
+ * ssse3 intrinsic (llvm won't do non-constant shuffles).
+ */
+ struct gallivm_state *gallivm = ivec_bld->gallivm;
+ LLVMValueRef sel, sel_f2345, sel_f23, sel_f2, tmpsel, tmp;
+ LLVMValueRef faceand1, sel_fand1, maxmx0, maxmx1, maxmy0, maxmy1;
+ LLVMValueRef c2 = lp_build_const_int_vec(gallivm, ivec_bld->type, 2);
+ LLVMValueRef c3 = lp_build_const_int_vec(gallivm, ivec_bld->type, 3);
+ LLVMValueRef c4 = lp_build_const_int_vec(gallivm, ivec_bld->type, 4);
+ LLVMValueRef c5 = lp_build_const_int_vec(gallivm, ivec_bld->type, 5);
+
+ sel = lp_build_cmp(ivec_bld, PIPE_FUNC_EQUAL, face, c5);
+ tmpsel = lp_build_select(ivec_bld, sel, ivec_bld->zero, ivec_bld->one);
+ sel_f2345 = lp_build_cmp(ivec_bld, PIPE_FUNC_GREATER, face, ivec_bld->one);
+ faceand1 = lp_build_and(ivec_bld, face, ivec_bld->one);
+ tmp = lp_build_add(ivec_bld, faceand1, c4);
+ next_faces[0] = lp_build_select(ivec_bld, sel_f2345, tmpsel, tmp);
+ next_faces[1] = lp_build_xor(ivec_bld, next_faces[0], ivec_bld->one);
+
+ tmp = lp_build_andnot(ivec_bld, face, c4);
+ sel_f23 = lp_build_cmp(ivec_bld, PIPE_FUNC_GREATER, tmp, ivec_bld->one);
+ tmp = lp_build_add(ivec_bld, face, c2);
+ next_faces[3] = lp_build_select(ivec_bld, sel_f23, tmp, c3);
+ next_faces[2] = lp_build_xor(ivec_bld, next_faces[3], ivec_bld->one);
- assert(negate_coord == +1 || negate_coord == -1);
+ /*
+ * new xcoords (for face 012345):
+ * x < 0.0 : max max t max-t max max
+ * x >= 1.0 : 0 0 max-t t 0 0
+ * y < 0.0 : max 0 max-s s s max-s
+ * y >= 1.0 : max 0 s max-s s max-s
+ *
+ * ncx[1] = face & ~4 > 1 ? (face == 2 ? max-t : t) : 0
+ * ncx[0] = max - ncx[1]
+ * ncx[3] = face > 1 ? (face & 1 ? max-s : s) : (face & 1) ? 0 : max
+ * ncx[2] = face & ~4 > 1 ? max - ncx[3] : ncx[3]
+ */
+ sel_f2 = lp_build_cmp(ivec_bld, PIPE_FUNC_EQUAL, face, c2);
+ maxmy0 = lp_build_sub(ivec_bld, max_coord, y0);
+ tmp = lp_build_select(ivec_bld, sel_f2, maxmy0, y0);
+ next_xcoords[1][0] = lp_build_select(ivec_bld, sel_f23, tmp, ivec_bld->zero);
+ next_xcoords[0][0] = lp_build_sub(ivec_bld, max_coord, next_xcoords[1][0]);
+ maxmy1 = lp_build_sub(ivec_bld, max_coord, y1);
+ tmp = lp_build_select(ivec_bld, sel_f2, maxmy1, y1);
+ next_xcoords[1][1] = lp_build_select(ivec_bld, sel_f23, tmp, ivec_bld->zero);
+ next_xcoords[0][1] = lp_build_sub(ivec_bld, max_coord, next_xcoords[1][1]);
+
+ sel_fand1 = lp_build_cmp(ivec_bld, PIPE_FUNC_EQUAL, faceand1, ivec_bld->one);
+
+ tmpsel = lp_build_select(ivec_bld, sel_fand1, ivec_bld->zero, max_coord);
+ maxmx0 = lp_build_sub(ivec_bld, max_coord, x0);
+ tmp = lp_build_select(ivec_bld, sel_fand1, maxmx0, x0);
+ next_xcoords[3][0] = lp_build_select(ivec_bld, sel_f2345, tmp, tmpsel);
+ tmp = lp_build_sub(ivec_bld, max_coord, next_xcoords[3][0]);
+ next_xcoords[2][0] = lp_build_select(ivec_bld, sel_f23, tmp, next_xcoords[3][0]);
+ maxmx1 = lp_build_sub(ivec_bld, max_coord, x1);
+ tmp = lp_build_select(ivec_bld, sel_fand1, maxmx1, x1);
+ next_xcoords[3][1] = lp_build_select(ivec_bld, sel_f2345, tmp, tmpsel);
+ tmp = lp_build_sub(ivec_bld, max_coord, next_xcoords[3][1]);
+ next_xcoords[2][1] = lp_build_select(ivec_bld, sel_f23, tmp, next_xcoords[3][1]);
- if (negate_coord == -1) {
- coord = lp_build_negate(coord_bld, coord);
- }
+ /*
+ * new ycoords (for face 012345):
+ * x < 0.0 : t t 0 max t t
+ * x >= 1.0 : t t 0 max t t
+ * y < 0.0 : max-s s 0 max max 0
+ * y >= 1.0 : s max-s 0 max 0 max
+ *
+ * ncy[0] = face & ~4 > 1 ? (face == 2 ? 0 : max) : t
+ * ncy[1] = ncy[0]
+ * ncy[3] = face > 1 ? (face & 1 ? max : 0) : (face & 1) ? max-s : max
+ * ncx[2] = face & ~4 > 1 ? max - ncx[3] : ncx[3]
+ */
+ tmp = lp_build_select(ivec_bld, sel_f2, ivec_bld->zero, max_coord);
+ next_ycoords[0][0] = lp_build_select(ivec_bld, sel_f23, tmp, y0);
+ next_ycoords[1][0] = next_ycoords[0][0];
+ next_ycoords[0][1] = lp_build_select(ivec_bld, sel_f23, tmp, y1);
+ next_ycoords[1][1] = next_ycoords[0][1];
+
+ tmpsel = lp_build_select(ivec_bld, sel_fand1, maxmx0, x0);
+ tmp = lp_build_select(ivec_bld, sel_fand1, max_coord, ivec_bld->zero);
+ next_ycoords[3][0] = lp_build_select(ivec_bld, sel_f2345, tmp, tmpsel);
+ tmp = lp_build_sub(ivec_bld, max_coord, next_ycoords[3][0]);
+ next_ycoords[2][0] = lp_build_select(ivec_bld, sel_f23, next_ycoords[3][0], tmp);
+ tmpsel = lp_build_select(ivec_bld, sel_fand1, maxmx1, x1);
+ tmp = lp_build_select(ivec_bld, sel_fand1, max_coord, ivec_bld->zero);
+ next_ycoords[3][1] = lp_build_select(ivec_bld, sel_f2345, tmp, tmpsel);
+ tmp = lp_build_sub(ivec_bld, max_coord, next_ycoords[3][1]);
+ next_ycoords[2][1] = lp_build_select(ivec_bld, sel_f23, next_ycoords[3][1], tmp);
+}
- res = lp_build_mul(coord_bld, coord, ima);
- if (sign) {
- sign = lp_build_broadcast_scalar(coord_bld, sign);
- res = lp_build_mul(coord_bld, res, sign);
- }
- res = lp_build_add(coord_bld, res, half);
- return res;
+/** Helper used by lp_build_cube_lookup() */
+static LLVMValueRef
+lp_build_cube_imapos(struct lp_build_context *coord_bld, LLVMValueRef coord)
+{
+ /* ima = +0.5 / abs(coord); */
+ LLVMValueRef posHalf = lp_build_const_vec(coord_bld->gallivm, coord_bld->type, 0.5);
+ LLVMValueRef absCoord = lp_build_abs(coord_bld, coord);
+ LLVMValueRef ima = lp_build_div(coord_bld, posHalf, absCoord);
+ return ima;
}
-/** Helper used by lp_build_cube_lookup()
- * Return (major_coord >= 0) ? pos_face : neg_face;
+/** Helper for doing 3-wise selection.
+ * Returns sel1 ? val2 : (sel0 ? val0 : val1).
*/
static LLVMValueRef
-lp_build_cube_face(struct lp_build_sample_context *bld,
- LLVMValueRef major_coord,
- unsigned pos_face, unsigned neg_face)
+lp_build_select3(struct lp_build_context *sel_bld,
+ LLVMValueRef sel0,
+ LLVMValueRef sel1,
+ LLVMValueRef val0,
+ LLVMValueRef val1,
+ LLVMValueRef val2)
{
- struct gallivm_state *gallivm = bld->gallivm;
- LLVMBuilderRef builder = gallivm->builder;
- LLVMValueRef cmp = LLVMBuildFCmp(builder, LLVMRealUGE,
- major_coord,
- bld->float_bld.zero, "");
- LLVMValueRef pos = lp_build_const_int32(gallivm, pos_face);
- LLVMValueRef neg = lp_build_const_int32(gallivm, neg_face);
- LLVMValueRef res = LLVMBuildSelect(builder, cmp, pos, neg, "");
- return res;
+ LLVMValueRef tmp;
+ tmp = lp_build_select(sel_bld, sel0, val0, val1);
+ return lp_build_select(sel_bld, sel1, val2, tmp);
}
-
/**
* Generate code to do cube face selection and compute per-face texcoords.
*/
void
lp_build_cube_lookup(struct lp_build_sample_context *bld,
- LLVMValueRef s,
- LLVMValueRef t,
- LLVMValueRef r,
- LLVMValueRef *face,
- LLVMValueRef *face_s,
- LLVMValueRef *face_t)
+ LLVMValueRef *coords,
+ const struct lp_derivatives *derivs_in, /* optional */
+ LLVMValueRef *rho,
+ struct lp_derivatives *derivs_out, /* optional */
+ boolean need_derivs)
{
- struct lp_build_context *float_bld = &bld->float_bld;
struct lp_build_context *coord_bld = &bld->coord_bld;
LLVMBuilderRef builder = bld->gallivm->builder;
- LLVMValueRef rx, ry, rz;
- LLVMValueRef arx, ary, arz;
- LLVMValueRef c25 = lp_build_const_float(bld->gallivm, 0.25);
- LLVMValueRef arx_ge_ary, arx_ge_arz;
- LLVMValueRef ary_ge_arx, ary_ge_arz;
- LLVMValueRef arx_ge_ary_arz, ary_ge_arx_arz;
- LLVMValueRef rx_pos, ry_pos, rz_pos;
-
- assert(bld->coord_bld.type.length == 4);
+ struct gallivm_state *gallivm = bld->gallivm;
+ LLVMValueRef si, ti, ri;
/*
- * Use the average of the four pixel's texcoords to choose the face.
+ * Do per-pixel face selection. We cannot however (as we used to do)
+ * simply calculate the derivs afterwards (which is very bogus for
+ * explicit derivs btw) because the values would be "random" when
+ * not all pixels lie on the same face. So what we do here is just
+ * calculate the derivatives after scaling the coords by the absolute
+ * value of the inverse major axis, and essentially do rho calculation
+ * steps as if it were a 3d texture. This is perfect if all pixels hit
+ * the same face, but not so great at edges, I believe the max error
+ * should be sqrt(2) with no_rho_approx or 2 otherwise (essentially measuring
+ * the 3d distance between 2 points on the cube instead of measuring up/down
+ * the edge). Still this is possibly a win over just selecting the same face
+ * for all pixels. Unfortunately, something like that doesn't work for
+ * explicit derivatives.
*/
- rx = lp_build_mul(float_bld, c25,
- lp_build_sum_vector(&bld->coord_bld, s));
- ry = lp_build_mul(float_bld, c25,
- lp_build_sum_vector(&bld->coord_bld, t));
- rz = lp_build_mul(float_bld, c25,
- lp_build_sum_vector(&bld->coord_bld, r));
+ struct lp_build_context *cint_bld = &bld->int_coord_bld;
+ struct lp_type intctype = cint_bld->type;
+ LLVMTypeRef coord_vec_type = coord_bld->vec_type;
+ LLVMTypeRef cint_vec_type = cint_bld->vec_type;
+ LLVMValueRef as, at, ar, face, face_s, face_t;
+ LLVMValueRef as_ge_at, maxasat, ar_ge_as_at;
+ LLVMValueRef snewx, tnewx, snewy, tnewy, snewz, tnewz;
+ LLVMValueRef tnegi, rnegi;
+ LLVMValueRef ma, mai, signma, signmabit, imahalfpos;
+ LLVMValueRef posHalf = lp_build_const_vec(gallivm, coord_bld->type, 0.5);
+ LLVMValueRef signmask = lp_build_const_int_vec(gallivm, intctype,
+ 1LL << (intctype.width - 1));
+ LLVMValueRef signshift = lp_build_const_int_vec(gallivm, intctype,
+ intctype.width -1);
+ LLVMValueRef facex = lp_build_const_int_vec(gallivm, intctype, PIPE_TEX_FACE_POS_X);
+ LLVMValueRef facey = lp_build_const_int_vec(gallivm, intctype, PIPE_TEX_FACE_POS_Y);
+ LLVMValueRef facez = lp_build_const_int_vec(gallivm, intctype, PIPE_TEX_FACE_POS_Z);
+ LLVMValueRef s = coords[0];
+ LLVMValueRef t = coords[1];
+ LLVMValueRef r = coords[2];
+
+ assert(PIPE_TEX_FACE_NEG_X == PIPE_TEX_FACE_POS_X + 1);
+ assert(PIPE_TEX_FACE_NEG_Y == PIPE_TEX_FACE_POS_Y + 1);
+ assert(PIPE_TEX_FACE_NEG_Z == PIPE_TEX_FACE_POS_Z + 1);
- arx = lp_build_abs(float_bld, rx);
- ary = lp_build_abs(float_bld, ry);
- arz = lp_build_abs(float_bld, rz);
+ /*
+ * get absolute value (for x/y/z face selection) and sign bit
+ * (for mirroring minor coords and pos/neg face selection)
+ * of the original coords.
+ */
+ as = lp_build_abs(&bld->coord_bld, s);
+ at = lp_build_abs(&bld->coord_bld, t);
+ ar = lp_build_abs(&bld->coord_bld, r);
/*
- * Compare sign/magnitude of rx,ry,rz to determine face
+ * major face determination: select x if x > y else select y
+ * select z if z >= max(x,y) else select previous result
+ * if some axis are the same we chose z over y, y over x - the
+ * dx10 spec seems to ask for it while OpenGL doesn't care (if we
+ * wouldn't care could save a select or two if using different
+ * compares and doing at_g_as_ar last since tnewx and tnewz are the
+ * same).
*/
- arx_ge_ary = LLVMBuildFCmp(builder, LLVMRealUGE, arx, ary, "");
- arx_ge_arz = LLVMBuildFCmp(builder, LLVMRealUGE, arx, arz, "");
- ary_ge_arx = LLVMBuildFCmp(builder, LLVMRealUGE, ary, arx, "");
- ary_ge_arz = LLVMBuildFCmp(builder, LLVMRealUGE, ary, arz, "");
-
- arx_ge_ary_arz = LLVMBuildAnd(builder, arx_ge_ary, arx_ge_arz, "");
- ary_ge_arx_arz = LLVMBuildAnd(builder, ary_ge_arx, ary_ge_arz, "");
-
- rx_pos = LLVMBuildFCmp(builder, LLVMRealUGE, rx, float_bld->zero, "");
- ry_pos = LLVMBuildFCmp(builder, LLVMRealUGE, ry, float_bld->zero, "");
- rz_pos = LLVMBuildFCmp(builder, LLVMRealUGE, rz, float_bld->zero, "");
-
- {
- struct lp_build_if_state if_ctx;
- LLVMValueRef face_s_var;
- LLVMValueRef face_t_var;
- LLVMValueRef face_var;
-
- face_s_var = lp_build_alloca(bld->gallivm, bld->coord_bld.vec_type, "face_s_var");
- face_t_var = lp_build_alloca(bld->gallivm, bld->coord_bld.vec_type, "face_t_var");
- face_var = lp_build_alloca(bld->gallivm, bld->int_bld.vec_type, "face_var");
-
- lp_build_if(&if_ctx, bld->gallivm, arx_ge_ary_arz);
- {
- /* +/- X face */
- LLVMValueRef sign = lp_build_sgn(float_bld, rx);
- LLVMValueRef ima = lp_build_cube_ima(coord_bld, s);
- *face_s = lp_build_cube_coord(coord_bld, sign, +1, r, ima);
- *face_t = lp_build_cube_coord(coord_bld, NULL, +1, t, ima);
- *face = lp_build_cube_face(bld, rx,
- PIPE_TEX_FACE_POS_X,
- PIPE_TEX_FACE_NEG_X);
- LLVMBuildStore(builder, *face_s, face_s_var);
- LLVMBuildStore(builder, *face_t, face_t_var);
- LLVMBuildStore(builder, *face, face_var);
+ as_ge_at = lp_build_cmp(coord_bld, PIPE_FUNC_GREATER, as, at);
+ maxasat = lp_build_max(coord_bld, as, at);
+ ar_ge_as_at = lp_build_cmp(coord_bld, PIPE_FUNC_GEQUAL, ar, maxasat);
+
+ if (need_derivs && (derivs_in || (bld->no_quad_lod && bld->no_rho_approx))) {
+ /*
+ * XXX: This is really really complex.
+ * It is a bit overkill to use this for implicit derivatives as well,
+ * no way this is worth the cost in practice, but seems to be the
+ * only way for getting accurate and per-pixel lod values.
+ */
+ LLVMValueRef ima, imahalf, tmp, ddx[3], ddy[3];
+ LLVMValueRef madx, mady, madxdivma, madydivma;
+ LLVMValueRef sdxi, tdxi, rdxi, sdyi, tdyi, rdyi;
+ LLVMValueRef tdxnegi, rdxnegi, tdynegi, rdynegi;
+ LLVMValueRef sdxnewx, sdxnewy, sdxnewz, tdxnewx, tdxnewy, tdxnewz;
+ LLVMValueRef sdynewx, sdynewy, sdynewz, tdynewx, tdynewy, tdynewz;
+ LLVMValueRef face_sdx, face_tdx, face_sdy, face_tdy;
+ /*
+ * s = 1/2 * ( sc / ma + 1)
+ * t = 1/2 * ( tc / ma + 1)
+ *
+ * s' = 1/2 * (sc' * ma - sc * ma') / ma^2
+ * t' = 1/2 * (tc' * ma - tc * ma') / ma^2
+ *
+ * dx.s = 0.5 * (dx.sc - sc * dx.ma / ma) / ma
+ * dx.t = 0.5 * (dx.tc - tc * dx.ma / ma) / ma
+ * dy.s = 0.5 * (dy.sc - sc * dy.ma / ma) / ma
+ * dy.t = 0.5 * (dy.tc - tc * dy.ma / ma) / ma
+ */
+
+ /* select ma, calculate ima */
+ ma = lp_build_select3(coord_bld, as_ge_at, ar_ge_as_at, s, t, r);
+ mai = LLVMBuildBitCast(builder, ma, cint_vec_type, "");
+ signmabit = LLVMBuildAnd(builder, mai, signmask, "");
+ ima = lp_build_div(coord_bld, coord_bld->one, ma);
+ imahalf = lp_build_mul(coord_bld, posHalf, ima);
+ imahalfpos = lp_build_abs(coord_bld, imahalf);
+
+ if (!derivs_in) {
+ ddx[0] = lp_build_ddx(coord_bld, s);
+ ddx[1] = lp_build_ddx(coord_bld, t);
+ ddx[2] = lp_build_ddx(coord_bld, r);
+ ddy[0] = lp_build_ddy(coord_bld, s);
+ ddy[1] = lp_build_ddy(coord_bld, t);
+ ddy[2] = lp_build_ddy(coord_bld, r);
}
- lp_build_else(&if_ctx);
- {
- struct lp_build_if_state if_ctx2;
-
- ary_ge_arx_arz = LLVMBuildAnd(builder, ary_ge_arx, ary_ge_arz, "");
-
- lp_build_if(&if_ctx2, bld->gallivm, ary_ge_arx_arz);
- {
- /* +/- Y face */
- LLVMValueRef sign = lp_build_sgn(float_bld, ry);
- LLVMValueRef ima = lp_build_cube_ima(coord_bld, t);
- *face_s = lp_build_cube_coord(coord_bld, NULL, -1, s, ima);
- *face_t = lp_build_cube_coord(coord_bld, sign, -1, r, ima);
- *face = lp_build_cube_face(bld, ry,
- PIPE_TEX_FACE_POS_Y,
- PIPE_TEX_FACE_NEG_Y);
- LLVMBuildStore(builder, *face_s, face_s_var);
- LLVMBuildStore(builder, *face_t, face_t_var);
- LLVMBuildStore(builder, *face, face_var);
- }
- lp_build_else(&if_ctx2);
- {
- /* +/- Z face */
- LLVMValueRef sign = lp_build_sgn(float_bld, rz);
- LLVMValueRef ima = lp_build_cube_ima(coord_bld, r);
- *face_s = lp_build_cube_coord(coord_bld, sign, -1, s, ima);
- *face_t = lp_build_cube_coord(coord_bld, NULL, +1, t, ima);
- *face = lp_build_cube_face(bld, rz,
- PIPE_TEX_FACE_POS_Z,
- PIPE_TEX_FACE_NEG_Z);
- LLVMBuildStore(builder, *face_s, face_s_var);
- LLVMBuildStore(builder, *face_t, face_t_var);
- LLVMBuildStore(builder, *face, face_var);
- }
- lp_build_endif(&if_ctx2);
+ else {
+ ddx[0] = derivs_in->ddx[0];
+ ddx[1] = derivs_in->ddx[1];
+ ddx[2] = derivs_in->ddx[2];
+ ddy[0] = derivs_in->ddy[0];
+ ddy[1] = derivs_in->ddy[1];
+ ddy[2] = derivs_in->ddy[2];
}
- lp_build_endif(&if_ctx);
+ /* select major derivatives */
+ madx = lp_build_select3(coord_bld, as_ge_at, ar_ge_as_at, ddx[0], ddx[1], ddx[2]);
+ mady = lp_build_select3(coord_bld, as_ge_at, ar_ge_as_at, ddy[0], ddy[1], ddy[2]);
+
+ si = LLVMBuildBitCast(builder, s, cint_vec_type, "");
+ ti = LLVMBuildBitCast(builder, t, cint_vec_type, "");
+ ri = LLVMBuildBitCast(builder, r, cint_vec_type, "");
+
+ sdxi = LLVMBuildBitCast(builder, ddx[0], cint_vec_type, "");
+ tdxi = LLVMBuildBitCast(builder, ddx[1], cint_vec_type, "");
+ rdxi = LLVMBuildBitCast(builder, ddx[2], cint_vec_type, "");
+
+ sdyi = LLVMBuildBitCast(builder, ddy[0], cint_vec_type, "");
+ tdyi = LLVMBuildBitCast(builder, ddy[1], cint_vec_type, "");
+ rdyi = LLVMBuildBitCast(builder, ddy[2], cint_vec_type, "");
+
+ /*
+ * compute all possible new s/t coords, which does the mirroring,
+ * and do the same for derivs minor axes.
+ * snewx = signma * -r;
+ * tnewx = -t;
+ * snewy = s;
+ * tnewy = signma * r;
+ * snewz = signma * s;
+ * tnewz = -t;
+ */
+ tnegi = LLVMBuildXor(builder, ti, signmask, "");
+ rnegi = LLVMBuildXor(builder, ri, signmask, "");
+ tdxnegi = LLVMBuildXor(builder, tdxi, signmask, "");
+ rdxnegi = LLVMBuildXor(builder, rdxi, signmask, "");
+ tdynegi = LLVMBuildXor(builder, tdyi, signmask, "");
+ rdynegi = LLVMBuildXor(builder, rdyi, signmask, "");
+
+ snewx = LLVMBuildXor(builder, signmabit, rnegi, "");
+ tnewx = tnegi;
+ sdxnewx = LLVMBuildXor(builder, signmabit, rdxnegi, "");
+ tdxnewx = tdxnegi;
+ sdynewx = LLVMBuildXor(builder, signmabit, rdynegi, "");
+ tdynewx = tdynegi;
+
+ snewy = si;
+ tnewy = LLVMBuildXor(builder, signmabit, ri, "");
+ sdxnewy = sdxi;
+ tdxnewy = LLVMBuildXor(builder, signmabit, rdxi, "");
+ sdynewy = sdyi;
+ tdynewy = LLVMBuildXor(builder, signmabit, rdyi, "");
+
+ snewz = LLVMBuildXor(builder, signmabit, si, "");
+ tnewz = tnegi;
+ sdxnewz = LLVMBuildXor(builder, signmabit, sdxi, "");
+ tdxnewz = tdxnegi;
+ sdynewz = LLVMBuildXor(builder, signmabit, sdyi, "");
+ tdynewz = tdynegi;
+
+ /* select the mirrored values */
+ face = lp_build_select3(cint_bld, as_ge_at, ar_ge_as_at, facex, facey, facez);
+ face_s = lp_build_select3(cint_bld, as_ge_at, ar_ge_as_at, snewx, snewy, snewz);
+ face_t = lp_build_select3(cint_bld, as_ge_at, ar_ge_as_at, tnewx, tnewy, tnewz);
+ face_sdx = lp_build_select3(cint_bld, as_ge_at, ar_ge_as_at, sdxnewx, sdxnewy, sdxnewz);
+ face_tdx = lp_build_select3(cint_bld, as_ge_at, ar_ge_as_at, tdxnewx, tdxnewy, tdxnewz);
+ face_sdy = lp_build_select3(cint_bld, as_ge_at, ar_ge_as_at, sdynewx, sdynewy, sdynewz);
+ face_tdy = lp_build_select3(cint_bld, as_ge_at, ar_ge_as_at, tdynewx, tdynewy, tdynewz);
+
+ face_s = LLVMBuildBitCast(builder, face_s, coord_vec_type, "");
+ face_t = LLVMBuildBitCast(builder, face_t, coord_vec_type, "");
+ face_sdx = LLVMBuildBitCast(builder, face_sdx, coord_vec_type, "");
+ face_tdx = LLVMBuildBitCast(builder, face_tdx, coord_vec_type, "");
+ face_sdy = LLVMBuildBitCast(builder, face_sdy, coord_vec_type, "");
+ face_tdy = LLVMBuildBitCast(builder, face_tdy, coord_vec_type, "");
+
+ /* deriv math, dx.s = 0.5 * (dx.sc - sc * dx.ma / ma) / ma */
+ madxdivma = lp_build_mul(coord_bld, madx, ima);
+ tmp = lp_build_mul(coord_bld, madxdivma, face_s);
+ tmp = lp_build_sub(coord_bld, face_sdx, tmp);
+ derivs_out->ddx[0] = lp_build_mul(coord_bld, tmp, imahalf);
+
+ /* dx.t = 0.5 * (dx.tc - tc * dx.ma / ma) / ma */
+ tmp = lp_build_mul(coord_bld, madxdivma, face_t);
+ tmp = lp_build_sub(coord_bld, face_tdx, tmp);
+ derivs_out->ddx[1] = lp_build_mul(coord_bld, tmp, imahalf);
+
+ /* dy.s = 0.5 * (dy.sc - sc * dy.ma / ma) / ma */
+ madydivma = lp_build_mul(coord_bld, mady, ima);
+ tmp = lp_build_mul(coord_bld, madydivma, face_s);
+ tmp = lp_build_sub(coord_bld, face_sdy, tmp);
+ derivs_out->ddy[0] = lp_build_mul(coord_bld, tmp, imahalf);
+
+ /* dy.t = 0.5 * (dy.tc - tc * dy.ma / ma) / ma */
+ tmp = lp_build_mul(coord_bld, madydivma, face_t);
+ tmp = lp_build_sub(coord_bld, face_tdy, tmp);
+ derivs_out->ddy[1] = lp_build_mul(coord_bld, tmp, imahalf);
+
+ signma = LLVMBuildLShr(builder, mai, signshift, "");
+ coords[2] = LLVMBuildOr(builder, face, signma, "face");
+
+ /* project coords */
+ face_s = lp_build_mul(coord_bld, face_s, imahalfpos);
+ face_t = lp_build_mul(coord_bld, face_t, imahalfpos);
+
+ coords[0] = lp_build_add(coord_bld, face_s, posHalf);
+ coords[1] = lp_build_add(coord_bld, face_t, posHalf);
- *face_s = LLVMBuildLoad(builder, face_s_var, "face_s");
- *face_t = LLVMBuildLoad(builder, face_t_var, "face_t");
- *face = LLVMBuildLoad(builder, face_var, "face");
+ return;
}
+
+ else if (need_derivs) {
+ LLVMValueRef ddx_ddy[2], tmp[3], rho_vec;
+ static const unsigned char swizzle0[] = { /* no-op swizzle */
+ 0, LP_BLD_SWIZZLE_DONTCARE,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+ static const unsigned char swizzle1[] = {
+ 1, LP_BLD_SWIZZLE_DONTCARE,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+ static const unsigned char swizzle01[] = { /* no-op swizzle */
+ 0, 1,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+ static const unsigned char swizzle23[] = {
+ 2, 3,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+ static const unsigned char swizzle02[] = {
+ 0, 2,
+ LP_BLD_SWIZZLE_DONTCARE, LP_BLD_SWIZZLE_DONTCARE
+ };
+
+ /*
+ * scale the s/t/r coords pre-select/mirror so we can calculate
+ * "reasonable" derivs.
+ */
+ ma = lp_build_select3(coord_bld, as_ge_at, ar_ge_as_at, s, t, r);
+ imahalfpos = lp_build_cube_imapos(coord_bld, ma);
+ s = lp_build_mul(coord_bld, s, imahalfpos);
+ t = lp_build_mul(coord_bld, t, imahalfpos);
+ r = lp_build_mul(coord_bld, r, imahalfpos);
+
+ /*
+ * This isn't quite the same as the "ordinary" (3d deriv) path since we
+ * know the texture is square which simplifies things (we can omit the
+ * size mul which happens very early completely here and do it at the
+ * very end).
+ * Also always do calculations according to GALLIVM_DEBUG_NO_RHO_APPROX
+ * since the error can get quite big otherwise at edges.
+ * (With no_rho_approx max error is sqrt(2) at edges, same as it is
+ * without no_rho_approx for 2d textures, otherwise it would be factor 2.)
+ */
+ ddx_ddy[0] = lp_build_packed_ddx_ddy_twocoord(coord_bld, s, t);
+ ddx_ddy[1] = lp_build_packed_ddx_ddy_onecoord(coord_bld, r);
+
+ ddx_ddy[0] = lp_build_mul(coord_bld, ddx_ddy[0], ddx_ddy[0]);
+ ddx_ddy[1] = lp_build_mul(coord_bld, ddx_ddy[1], ddx_ddy[1]);
+
+ tmp[0] = lp_build_swizzle_aos(coord_bld, ddx_ddy[0], swizzle01);
+ tmp[1] = lp_build_swizzle_aos(coord_bld, ddx_ddy[0], swizzle23);
+ tmp[2] = lp_build_swizzle_aos(coord_bld, ddx_ddy[1], swizzle02);
+
+ rho_vec = lp_build_add(coord_bld, tmp[0], tmp[1]);
+ rho_vec = lp_build_add(coord_bld, rho_vec, tmp[2]);
+
+ tmp[0] = lp_build_swizzle_aos(coord_bld, rho_vec, swizzle0);
+ tmp[1] = lp_build_swizzle_aos(coord_bld, rho_vec, swizzle1);
+ *rho = lp_build_max(coord_bld, tmp[0], tmp[1]);
+ }
+
+ if (!need_derivs) {
+ ma = lp_build_select3(coord_bld, as_ge_at, ar_ge_as_at, s, t, r);
+ }
+ mai = LLVMBuildBitCast(builder, ma, cint_vec_type, "");
+ signmabit = LLVMBuildAnd(builder, mai, signmask, "");
+
+ si = LLVMBuildBitCast(builder, s, cint_vec_type, "");
+ ti = LLVMBuildBitCast(builder, t, cint_vec_type, "");
+ ri = LLVMBuildBitCast(builder, r, cint_vec_type, "");
+
+ /*
+ * compute all possible new s/t coords, which does the mirroring
+ * snewx = signma * -r;
+ * tnewx = -t;
+ * snewy = s;
+ * tnewy = signma * r;
+ * snewz = signma * s;
+ * tnewz = -t;
+ */
+ tnegi = LLVMBuildXor(builder, ti, signmask, "");
+ rnegi = LLVMBuildXor(builder, ri, signmask, "");
+
+ snewx = LLVMBuildXor(builder, signmabit, rnegi, "");
+ tnewx = tnegi;
+
+ snewy = si;
+ tnewy = LLVMBuildXor(builder, signmabit, ri, "");
+
+ snewz = LLVMBuildXor(builder, signmabit, si, "");
+ tnewz = tnegi;
+
+ /* select the mirrored values */
+ face_s = lp_build_select3(cint_bld, as_ge_at, ar_ge_as_at, snewx, snewy, snewz);
+ face_t = lp_build_select3(cint_bld, as_ge_at, ar_ge_as_at, tnewx, tnewy, tnewz);
+ face = lp_build_select3(cint_bld, as_ge_at, ar_ge_as_at, facex, facey, facez);
+
+ face_s = LLVMBuildBitCast(builder, face_s, coord_vec_type, "");
+ face_t = LLVMBuildBitCast(builder, face_t, coord_vec_type, "");
+
+ /* add +1 for neg face */
+ /* XXX with AVX probably want to use another select here -
+ * as long as we ensure vblendvps gets used we can actually
+ * skip the comparison and just use sign as a "mask" directly.
+ */
+ signma = LLVMBuildLShr(builder, mai, signshift, "");
+ coords[2] = LLVMBuildOr(builder, face, signma, "face");
+
+ /* project coords */
+ if (!need_derivs) {
+ imahalfpos = lp_build_cube_imapos(coord_bld, ma);
+ face_s = lp_build_mul(coord_bld, face_s, imahalfpos);
+ face_t = lp_build_mul(coord_bld, face_t, imahalfpos);
+ }
+
+ coords[0] = lp_build_add(coord_bld, face_s, posHalf);
+ coords[1] = lp_build_add(coord_bld, face_t, posHalf);
}
LLVMValueRef *out_offset,
LLVMValueRef *out_subcoord)
{
+ LLVMBuilderRef builder = bld->gallivm->builder;
LLVMValueRef offset;
LLVMValueRef subcoord;
*/
#if 0
LLVMValueRef block_width = lp_build_const_int_vec(bld->type, block_length);
- subcoord = LLVMBuildURem(bld->builder, coord, block_width, "");
- coord = LLVMBuildUDiv(bld->builder, coord, block_width, "");
+ subcoord = LLVMBuildURem(builder, coord, block_width, "");
+ coord = LLVMBuildUDiv(builder, coord, block_width, "");
#else
- unsigned logbase2 = util_unsigned_logbase2(block_length);
+ unsigned logbase2 = util_logbase2(block_length);
LLVMValueRef block_shift = lp_build_const_int_vec(bld->gallivm, bld->type, logbase2);
LLVMValueRef block_mask = lp_build_const_int_vec(bld->gallivm, bld->type, block_length - 1);
- subcoord = LLVMBuildAnd(bld->builder, coord, block_mask, "");
- coord = LLVMBuildLShr(bld->builder, coord, block_shift, "");
+ subcoord = LLVMBuildAnd(builder, coord, block_mask, "");
+ coord = LLVMBuildLShr(builder, coord, block_shift, "");
#endif
}
projects / mesa.git / blobdiff