summaryrefslogtreecommitdiff
path: root/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c')
-rw-r--r--src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c508
1 files changed, 448 insertions, 60 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
index 64698c660e..1ba139c6cd 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
@@ -69,10 +69,14 @@ struct lp_build_sample_context
struct lp_type coord_type;
struct lp_build_context coord_bld;
- /** Integer coordinates */
+ /** Unsigned integer coordinates */
struct lp_type uint_coord_type;
struct lp_build_context uint_coord_bld;
+ /** Signed integer coordinates */
+ struct lp_type int_coord_type;
+ struct lp_build_context int_coord_bld;
+
/** Output texels type and build context */
struct lp_type texel_type;
struct lp_build_context texel_bld;
@@ -138,14 +142,74 @@ lp_build_sample_packed(struct lp_build_sample_context *bld,
}
+/**
+ * Helper to compute the mirror function for the PIPE_WRAP_MIRROR modes.
+ */
+static LLVMValueRef
+lp_build_coord_mirror(struct lp_build_sample_context *bld,
+ LLVMValueRef coord)
+{
+ struct lp_build_context *coord_bld = &bld->coord_bld;
+ struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
+ LLVMValueRef fract, flr, isOdd;
+
+ /* fract = coord - floor(coord) */
+ fract = lp_build_sub(coord_bld, coord, lp_build_floor(coord_bld, coord));
+
+ /* flr = ifloor(coord); */
+ flr = lp_build_ifloor(coord_bld, coord);
+
+ /* isOdd = flr & 1 */
+ isOdd = LLVMBuildAnd(bld->builder, flr, int_coord_bld->one, "");
+
+ /* make coord positive or negative depending on isOdd */
+ coord = lp_build_set_sign(coord_bld, fract, isOdd);
+
+ /* convert isOdd to float */
+ isOdd = lp_build_int_to_float(coord_bld, isOdd);
+
+ /* add isOdd to coord */
+ coord = lp_build_add(coord_bld, coord, isOdd);
+
+ return coord;
+}
+
+
+/**
+ * We only support a few wrap modes in lp_build_sample_wrap_int() at this time.
+ * Return whether the given mode is supported by that function.
+ */
+static boolean
+is_simple_wrap_mode(int mode)
+{
+ switch (mode) {
+ case PIPE_TEX_WRAP_REPEAT:
+ case PIPE_TEX_WRAP_CLAMP:
+ case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+ case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
+ return TRUE;
+ default:
+ return FALSE;
+ }
+}
+
+
+/**
+ * Build LLVM code for texture wrap mode, for scaled integer texcoords.
+ * \param coord the incoming texcoord (s,t,r or q) scaled to the texture size
+ * \param length the texture size along one dimension
+ * \param is_pot if TRUE, length is a power of two
+ * \param wrap_mode one of PIPE_TEX_WRAP_x
+ */
static LLVMValueRef
-lp_build_sample_wrap(struct lp_build_sample_context *bld,
- LLVMValueRef coord,
- LLVMValueRef length,
- boolean is_pot,
- unsigned wrap_mode)
+lp_build_sample_wrap_int(struct lp_build_sample_context *bld,
+ LLVMValueRef coord,
+ LLVMValueRef length,
+ boolean is_pot,
+ unsigned wrap_mode)
{
struct lp_build_context *uint_coord_bld = &bld->uint_coord_bld;
+ struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
LLVMValueRef length_minus_one;
length_minus_one = lp_build_sub(uint_coord_bld, length, uint_coord_bld->one);
@@ -161,12 +225,12 @@ lp_build_sample_wrap(struct lp_build_sample_context *bld,
break;
case PIPE_TEX_WRAP_CLAMP:
- coord = lp_build_max(uint_coord_bld, coord, uint_coord_bld->zero);
- coord = lp_build_min(uint_coord_bld, coord, length_minus_one);
- break;
-
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
+ coord = lp_build_max(int_coord_bld, coord, int_coord_bld->zero);
+ coord = lp_build_min(int_coord_bld, coord, length_minus_one);
+ break;
+
case PIPE_TEX_WRAP_MIRROR_REPEAT:
case PIPE_TEX_WRAP_MIRROR_CLAMP:
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
@@ -186,6 +250,332 @@ lp_build_sample_wrap(struct lp_build_sample_context *bld,
}
+/**
+ * Build LLVM code for texture wrap mode for linear filtering.
+ * \param x0_out returns first integer texcoord
+ * \param x1_out returns second integer texcoord
+ * \param weight_out returns linear interpolation weight
+ */
+static void
+lp_build_sample_wrap_linear(struct lp_build_sample_context *bld,
+ LLVMValueRef coord,
+ LLVMValueRef length,
+ boolean is_pot,
+ unsigned wrap_mode,
+ LLVMValueRef *x0_out,
+ LLVMValueRef *x1_out,
+ LLVMValueRef *weight_out)
+{
+ struct lp_build_context *coord_bld = &bld->coord_bld;
+ struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
+ struct lp_build_context *uint_coord_bld = &bld->uint_coord_bld;
+ LLVMValueRef two = lp_build_const_scalar(coord_bld->type, 2.0);
+ LLVMValueRef half = lp_build_const_scalar(coord_bld->type, 0.5);
+ LLVMValueRef length_f = lp_build_int_to_float(coord_bld, length);
+ LLVMValueRef length_minus_one;
+ LLVMValueRef length_f_minus_one;
+ LLVMValueRef coord0, coord1, weight;
+
+ /* XXX check for normalized vs. unnormalized coords */
+
+ length_minus_one = lp_build_sub(uint_coord_bld, length, uint_coord_bld->one);
+ length_f_minus_one = lp_build_sub(coord_bld, length_f, coord_bld->one);
+
+ 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 */
+ coord0 = lp_build_ifloor(coord_bld, coord);
+ coord1 = lp_build_add(uint_coord_bld, coord0, uint_coord_bld->one);
+ /* compute lerp weight */
+ weight = lp_build_fract(coord_bld, coord);
+ /* repeat wrap */
+ if (is_pot) {
+ coord0 = LLVMBuildAnd(bld->builder, coord0, length_minus_one, "");
+ coord1 = LLVMBuildAnd(bld->builder, coord1, length_minus_one, "");
+ }
+ else {
+ /* Signed remainder won't give the right results for negative
+ * dividends but unsigned remainder does.*/
+ coord0 = LLVMBuildURem(bld->builder, coord0, length, "");
+ coord1 = LLVMBuildURem(bld->builder, coord1, length, "");
+ }
+ break;
+
+ case PIPE_TEX_WRAP_CLAMP:
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ weight = lp_build_fract(coord_bld, coord);
+ coord0 = lp_build_clamp(coord_bld, coord, coord_bld->zero,
+ length_f_minus_one);
+ coord1 = lp_build_add(coord_bld, coord, coord_bld->one);
+ coord1 = lp_build_clamp(coord_bld, coord1, coord_bld->zero,
+ length_f_minus_one);
+ coord0 = lp_build_ifloor(coord_bld, coord0);
+ coord1 = lp_build_ifloor(coord_bld, coord1);
+ break;
+
+ case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+ /* clamp to [0,1] */
+ coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, coord_bld->one);
+ /* mul by tex size and subtract 0.5 */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ coord = lp_build_sub(coord_bld, coord, half);
+ /* compute lerp weight */
+ weight = lp_build_fract(coord_bld, coord);
+ /* coord0 = floor(coord); */
+ coord0 = lp_build_ifloor(coord_bld, coord);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ /* coord0 = max(coord0, 0) */
+ coord0 = lp_build_max(int_coord_bld, coord0, int_coord_bld->zero);
+ /* coord1 = min(coord1, length-1) */
+ coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
+ break;
+
+ case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
+ {
+ LLVMValueRef min, max;
+ /* min = -1.0 / (2 * length) */
+ min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
+ min = lp_build_negate(coord_bld, min);
+ /* max = length - min */
+ max = lp_build_sub(coord_bld, length_f, min);
+ /* scale coord to length (and sub 0.5?) */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ /* compute lerp weight */
+ weight = lp_build_fract(coord_bld, coord);
+ /* coord = clamp(coord, min, max) */
+ coord = lp_build_clamp(coord_bld, coord, min, max);
+ /* convert to int */
+ coord0 = lp_build_ifloor(coord_bld, coord);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ }
+ break;
+
+ case PIPE_TEX_WRAP_MIRROR_REPEAT:
+ /* compute mirror function */
+ coord = lp_build_coord_mirror(bld, coord);
+
+ /* scale coord to length */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ coord = lp_build_sub(coord_bld, coord, half);
+
+ /* compute lerp weight */
+ weight = lp_build_fract(coord_bld, coord);
+
+ /* convert to int coords */
+ coord0 = lp_build_ifloor(coord_bld, coord);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+
+ /* coord0 = max(coord0, 0) */
+ coord0 = lp_build_max(int_coord_bld, coord0, int_coord_bld->zero);
+ /* coord1 = min(coord1, length-1) */
+ coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
+ break;
+
+ case PIPE_TEX_WRAP_MIRROR_CLAMP:
+ coord = lp_build_abs(coord_bld, coord);
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ weight = lp_build_fract(coord_bld, coord);
+ coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, length_f_minus_one);
+ coord0 = lp_build_ifloor(coord_bld, coord);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ break;
+
+ case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
+ {
+ LLVMValueRef min, max;
+ /* min = 1.0 / (2 * length) */
+ min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
+ /* max = length - min */
+ max = lp_build_sub(coord_bld, length_f, min);
+
+ coord = lp_build_abs(coord_bld, coord);
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ weight = lp_build_fract(coord_bld, coord);
+ coord = lp_build_clamp(coord_bld, coord, min, max);
+ coord0 = lp_build_ifloor(coord_bld, coord);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ }
+ break;
+
+ case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
+ {
+ LLVMValueRef min, max;
+ /* min = -1.0 / (2 * length) */
+ min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
+ min = lp_build_negate(coord_bld, min);
+ /* max = length - min */
+ max = lp_build_sub(coord_bld, length_f, min);
+
+ coord = lp_build_abs(coord_bld, coord);
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ weight = lp_build_fract(coord_bld, coord);
+ coord = lp_build_clamp(coord_bld, coord, min, max);
+ coord0 = lp_build_ifloor(coord_bld, coord);
+ coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
+ }
+ break;
+
+ default:
+ assert(0);
+ }
+
+ *x0_out = coord0;
+ *x1_out = coord1;
+ *weight_out = weight;
+}
+
+
+/**
+ * Build LLVM code for texture wrap mode for nearest filtering.
+ * \param coord the incoming texcoord (nominally in [0,1])
+ * \param length the texture size along one dimension, as int
+ * \param is_pot if TRUE, length is a power of two
+ * \param wrap_mode one of PIPE_TEX_WRAP_x
+ */
+static LLVMValueRef
+lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld,
+ LLVMValueRef coord,
+ LLVMValueRef length,
+ 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;
+ struct lp_build_context *uint_coord_bld = &bld->uint_coord_bld;
+ LLVMValueRef two = lp_build_const_scalar(coord_bld->type, 2.0);
+ LLVMValueRef length_f = lp_build_int_to_float(coord_bld, length);
+ LLVMValueRef length_minus_one = lp_build_sub(uint_coord_bld, length, uint_coord_bld->one);
+ LLVMValueRef length_f_minus_one = lp_build_sub(coord_bld, length_f, coord_bld->one);
+ LLVMValueRef icoord;
+
+ /* XXX check for normalized vs. unnormalized coords */
+
+ 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, "");
+ else
+ /* Signed remainder won't give the right results for negative
+ * dividends but unsigned remainder does.*/
+ icoord = LLVMBuildURem(bld->builder, icoord, length, "");
+ break;
+
+ case PIPE_TEX_WRAP_CLAMP:
+ /* mul by size */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ /* floor */
+ icoord = lp_build_ifloor(coord_bld, coord);
+ /* clamp to [0, size-1]. Note: int coord builder type */
+ icoord = lp_build_clamp(int_coord_bld, icoord, int_coord_bld->zero,
+ length_minus_one);
+ break;
+
+ case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+ {
+ LLVMValueRef min, max;
+ /* min = 1.0 / (2 * length) */
+ min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
+ /* max = length - min */
+ max = lp_build_sub(coord_bld, length_f, min);
+ /* scale coord to length */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ /* coord = clamp(coord, min, max) */
+ coord = lp_build_clamp(coord_bld, coord, min, max);
+ icoord = lp_build_ifloor(coord_bld, coord);
+ }
+ break;
+
+ case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
+ /* Note: this is the same as CLAMP_TO_EDGE, except min = -min */
+ {
+ LLVMValueRef min, max;
+ /* min = -1.0 / (2 * length) */
+ min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
+ min = lp_build_negate(coord_bld, min);
+ /* max = length - min */
+ max = lp_build_sub(coord_bld, length_f, min);
+ /* scale coord to length */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ /* coord = clamp(coord, min, max) */
+ coord = lp_build_clamp(coord_bld, coord, min, max);
+ icoord = lp_build_ifloor(coord_bld, coord);
+ }
+ break;
+
+ case PIPE_TEX_WRAP_MIRROR_REPEAT:
+ {
+ LLVMValueRef min, max;
+ /* min = 1.0 / (2 * length) */
+ min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
+ /* max = length - min */
+ max = lp_build_sub(coord_bld, length_f, min);
+
+ /* compute mirror function */
+ coord = lp_build_coord_mirror(bld, coord);
+
+ /* scale coord to length */
+ coord = lp_build_mul(coord_bld, coord, length_f);
+
+ /* coord = clamp(coord, min, max) */
+ coord = lp_build_clamp(coord_bld, coord, min, max);
+ icoord = lp_build_ifloor(coord_bld, coord);
+ }
+ break;
+
+ case PIPE_TEX_WRAP_MIRROR_CLAMP:
+ coord = lp_build_abs(coord_bld, coord);
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, length_f_minus_one);
+ icoord = lp_build_ifloor(coord_bld, coord);
+ break;
+
+ case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
+ {
+ LLVMValueRef min, max;
+ /* min = 1.0 / (2 * length) */
+ min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
+ /* max = length - min */
+ max = lp_build_sub(coord_bld, length_f, min);
+
+ coord = lp_build_abs(coord_bld, coord);
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ coord = lp_build_clamp(coord_bld, coord, min, max);
+ icoord = lp_build_ifloor(coord_bld, coord);
+ }
+ break;
+
+ case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
+ {
+ LLVMValueRef min, max;
+ /* min = 1.0 / (2 * length) */
+ min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f));
+ min = lp_build_negate(coord_bld, min);
+ /* max = length - min */
+ max = lp_build_sub(coord_bld, length_f, min);
+
+ coord = lp_build_abs(coord_bld, coord);
+ coord = lp_build_mul(coord_bld, coord, length_f);
+ coord = lp_build_clamp(coord_bld, coord, min, max);
+ icoord = lp_build_ifloor(coord_bld, coord);
+ }
+ break;
+
+ default:
+ assert(0);
+ }
+
+ return icoord;
+}
+
+
+/**
+ * Sample 2D texture with nearest filtering.
+ */
static void
lp_build_sample_2d_nearest_soa(struct lp_build_sample_context *bld,
LLVMValueRef s,
@@ -196,16 +586,15 @@ lp_build_sample_2d_nearest_soa(struct lp_build_sample_context *bld,
LLVMValueRef data_ptr,
LLVMValueRef *texel)
{
- LLVMValueRef x;
- LLVMValueRef y;
+ LLVMValueRef x, y;
- x = lp_build_ifloor(&bld->coord_bld, s);
- y = lp_build_ifloor(&bld->coord_bld, t);
- lp_build_name(x, "tex.x.floor");
- lp_build_name(y, "tex.y.floor");
+ x = lp_build_sample_wrap_nearest(bld, s, width,
+ bld->static_state->pot_width,
+ bld->static_state->wrap_s);
+ y = lp_build_sample_wrap_nearest(bld, t, height,
+ bld->static_state->pot_height,
+ bld->static_state->wrap_t);
- x = lp_build_sample_wrap(bld, x, width, bld->static_state->pot_width, bld->static_state->wrap_s);
- y = lp_build_sample_wrap(bld, y, height, bld->static_state->pot_height, bld->static_state->wrap_t);
lp_build_name(x, "tex.x.wrapped");
lp_build_name(y, "tex.y.wrapped");
@@ -213,6 +602,9 @@ lp_build_sample_2d_nearest_soa(struct lp_build_sample_context *bld,
}
+/**
+ * Sample 2D texture with bilinear filtering.
+ */
static void
lp_build_sample_2d_linear_soa(struct lp_build_sample_context *bld,
LLVMValueRef s,
@@ -223,9 +615,6 @@ lp_build_sample_2d_linear_soa(struct lp_build_sample_context *bld,
LLVMValueRef data_ptr,
LLVMValueRef *texel)
{
- LLVMValueRef half;
- LLVMValueRef s_ipart;
- LLVMValueRef t_ipart;
LLVMValueRef s_fpart;
LLVMValueRef t_fpart;
LLVMValueRef x0, x1;
@@ -233,27 +622,10 @@ lp_build_sample_2d_linear_soa(struct lp_build_sample_context *bld,
LLVMValueRef neighbors[2][2][4];
unsigned chan;
- half = lp_build_const_scalar(bld->coord_type, 0.5);
- s = lp_build_sub(&bld->coord_bld, s, half);
- t = lp_build_sub(&bld->coord_bld, t, half);
-
- s_ipart = lp_build_floor(&bld->coord_bld, s);
- t_ipart = lp_build_floor(&bld->coord_bld, t);
-
- s_fpart = lp_build_sub(&bld->coord_bld, s, s_ipart);
- t_fpart = lp_build_sub(&bld->coord_bld, t, t_ipart);
-
- x0 = lp_build_itrunc(&bld->coord_bld, s_ipart);
- y0 = lp_build_itrunc(&bld->coord_bld, t_ipart);
-
- x0 = lp_build_sample_wrap(bld, x0, width, bld->static_state->pot_width, bld->static_state->wrap_s);
- y0 = lp_build_sample_wrap(bld, y0, height, bld->static_state->pot_height, bld->static_state->wrap_t);
-
- x1 = lp_build_add(&bld->uint_coord_bld, x0, bld->uint_coord_bld.one);
- y1 = lp_build_add(&bld->uint_coord_bld, y0, bld->uint_coord_bld.one);
-
- x1 = lp_build_sample_wrap(bld, x1, width, bld->static_state->pot_width, bld->static_state->wrap_s);
- y1 = lp_build_sample_wrap(bld, y1, height, bld->static_state->pot_height, bld->static_state->wrap_t);
+ lp_build_sample_wrap_linear(bld, s, width, bld->static_state->pot_width,
+ bld->static_state->wrap_s, &x0, &x1, &s_fpart);
+ lp_build_sample_wrap_linear(bld, t, height, bld->static_state->pot_height,
+ bld->static_state->wrap_t, &y0, &y1, &t_fpart);
lp_build_sample_texel_soa(bld, x0, y0, stride, data_ptr, neighbors[0][0]);
lp_build_sample_texel_soa(bld, x1, y0, stride, data_ptr, neighbors[0][1]);
@@ -334,20 +706,33 @@ lp_build_sample_2d_linear_aos(struct lp_build_sample_context *bld,
h16_vec_type = lp_build_vec_type(h16.type);
u8n_vec_type = lp_build_vec_type(u8n.type);
+ if (bld->static_state->normalized_coords) {
+ LLVMTypeRef coord_vec_type = lp_build_vec_type(bld->coord_type);
+ LLVMValueRef fp_width = LLVMBuildSIToFP(bld->builder, width, coord_vec_type, "");
+ LLVMValueRef fp_height = LLVMBuildSIToFP(bld->builder, height, coord_vec_type, "");
+ s = lp_build_mul(&bld->coord_bld, s, fp_width);
+ t = lp_build_mul(&bld->coord_bld, t, fp_height);
+ }
+
+ /* scale coords by 256 (8 fractional bits) */
s = lp_build_mul_imm(&bld->coord_bld, s, 256);
t = lp_build_mul_imm(&bld->coord_bld, t, 256);
+ /* convert float to int */
s = LLVMBuildFPToSI(builder, s, i32_vec_type, "");
t = LLVMBuildFPToSI(builder, t, i32_vec_type, "");
+ /* subtract 0.5 (add -128) */
i32_c128 = lp_build_int_const_scalar(i32.type, -128);
s = LLVMBuildAdd(builder, s, i32_c128, "");
t = LLVMBuildAdd(builder, t, i32_c128, "");
+ /* compute floor (shift right 8) */
i32_c8 = lp_build_int_const_scalar(i32.type, 8);
s_ipart = LLVMBuildAShr(builder, s, i32_c8, "");
t_ipart = LLVMBuildAShr(builder, t, i32_c8, "");
+ /* compute fractional part (AND with 0xff) */
i32_c255 = lp_build_int_const_scalar(i32.type, 255);
s_fpart = LLVMBuildAnd(builder, s, i32_c255, "");
t_fpart = LLVMBuildAnd(builder, t, i32_c255, "");
@@ -355,14 +740,18 @@ lp_build_sample_2d_linear_aos(struct lp_build_sample_context *bld,
x0 = s_ipart;
y0 = t_ipart;
- x0 = lp_build_sample_wrap(bld, x0, width, bld->static_state->pot_width, bld->static_state->wrap_s);
- y0 = lp_build_sample_wrap(bld, y0, height, bld->static_state->pot_height, bld->static_state->wrap_t);
+ x1 = lp_build_add(&bld->int_coord_bld, x0, bld->int_coord_bld.one);
+ y1 = lp_build_add(&bld->int_coord_bld, y0, bld->int_coord_bld.one);
- x1 = lp_build_add(&bld->uint_coord_bld, x0, bld->uint_coord_bld.one);
- y1 = lp_build_add(&bld->uint_coord_bld, y0, bld->uint_coord_bld.one);
+ x0 = lp_build_sample_wrap_int(bld, x0, width, bld->static_state->pot_width,
+ bld->static_state->wrap_s);
+ y0 = lp_build_sample_wrap_int(bld, y0, height, bld->static_state->pot_height,
+ bld->static_state->wrap_t);
- x1 = lp_build_sample_wrap(bld, x1, width, bld->static_state->pot_width, bld->static_state->wrap_s);
- y1 = lp_build_sample_wrap(bld, y1, height, bld->static_state->pot_height, bld->static_state->wrap_t);
+ x1 = lp_build_sample_wrap_int(bld, x1, width, bld->static_state->pot_width,
+ bld->static_state->wrap_s);
+ y1 = lp_build_sample_wrap_int(bld, y1, height, bld->static_state->pot_height,
+ bld->static_state->wrap_t);
/*
* Transform 4 x i32 in
@@ -546,9 +935,11 @@ lp_build_sample_soa(LLVMBuilderRef builder,
bld.format_desc = util_format_description(static_state->format);
bld.coord_type = type;
bld.uint_coord_type = lp_uint_type(type);
+ bld.int_coord_type = lp_int_type(type);
bld.texel_type = type;
lp_build_context_init(&bld.coord_bld, builder, bld.coord_type);
lp_build_context_init(&bld.uint_coord_bld, builder, bld.uint_coord_type);
+ lp_build_context_init(&bld.int_coord_bld, builder, bld.int_coord_type);
lp_build_context_init(&bld.texel_bld, builder, bld.texel_type);
/* Get the dynamic state */
@@ -568,23 +959,20 @@ lp_build_sample_soa(LLVMBuilderRef builder,
if(static_state->target == PIPE_TEXTURE_1D)
t = bld.coord_bld.zero;
- if(static_state->normalized_coords) {
- LLVMTypeRef coord_vec_type = lp_build_vec_type(bld.coord_type);
- LLVMValueRef fp_width = LLVMBuildSIToFP(builder, width, coord_vec_type, "");
- LLVMValueRef fp_height = LLVMBuildSIToFP(builder, height, coord_vec_type, "");
- s = lp_build_mul(&bld.coord_bld, s, fp_width);
- t = lp_build_mul(&bld.coord_bld, t, fp_height);
- }
-
switch (static_state->min_img_filter) {
case PIPE_TEX_FILTER_NEAREST:
- lp_build_sample_2d_nearest_soa(&bld, s, t, width, height, stride, data_ptr, texel);
+ lp_build_sample_2d_nearest_soa(&bld, s, t, width, height,
+ stride, data_ptr, texel);
break;
case PIPE_TEX_FILTER_LINEAR:
- if(lp_format_is_rgba8(bld.format_desc))
- lp_build_sample_2d_linear_aos(&bld, s, t, width, height, stride, data_ptr, texel);
+ if(lp_format_is_rgba8(bld.format_desc) &&
+ is_simple_wrap_mode(static_state->wrap_s) &&
+ is_simple_wrap_mode(static_state->wrap_t))
+ lp_build_sample_2d_linear_aos(&bld, s, t, width, height,
+ stride, data_ptr, texel);
else
- lp_build_sample_2d_linear_soa(&bld, s, t, width, height, stride, data_ptr, texel);
+ lp_build_sample_2d_linear_soa(&bld, s, t, width, height,
+ stride, data_ptr, texel);
break;
default:
assert(0);
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-31 11:00:40 +0000