diff options
Diffstat (limited to 'src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c')
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c | 1053 |
1 files changed, 959 insertions, 94 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c index e268862282..a965d394f4 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c @@ -65,11 +65,23 @@ struct lp_build_sample_context const struct util_format_description *format_desc; + /** regular scalar float type */ + struct lp_type float_type; + struct lp_build_context float_bld; + + /** regular scalar float type */ + struct lp_type int_type; + struct lp_build_context int_bld; + /** Incoming coordinates type and build 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; @@ -79,36 +91,145 @@ struct lp_build_sample_context }; +/** + * Does the given texture wrap mode allow sampling the texture border color? + * XXX maybe move this into gallium util code. + */ +static boolean +wrap_mode_uses_border_color(unsigned mode) +{ + switch (mode) { + case PIPE_TEX_WRAP_REPEAT: + case PIPE_TEX_WRAP_CLAMP_TO_EDGE: + case PIPE_TEX_WRAP_MIRROR_REPEAT: + case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE: + return FALSE; + case PIPE_TEX_WRAP_CLAMP: + case PIPE_TEX_WRAP_CLAMP_TO_BORDER: + case PIPE_TEX_WRAP_MIRROR_CLAMP: + case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER: + return TRUE; + default: + assert(0 && "unexpected wrap mode"); + return FALSE; + } +} + + +static LLVMValueRef +lp_build_get_mipmap_level(struct lp_build_sample_context *bld, + LLVMValueRef data_array, LLVMValueRef level) +{ + LLVMValueRef indexes[2], data_ptr; + indexes[0] = LLVMConstInt(LLVMInt32Type(), 0, 0); + indexes[1] = level; + data_ptr = LLVMBuildGEP(bld->builder, data_array, indexes, 2, ""); + data_ptr = LLVMBuildLoad(bld->builder, data_ptr, ""); + return data_ptr; +} + + +static LLVMValueRef +lp_build_get_const_mipmap_level(struct lp_build_sample_context *bld, + LLVMValueRef data_array, int level) +{ + LLVMValueRef lvl = LLVMConstInt(LLVMInt32Type(), level, 0); + return lp_build_get_mipmap_level(bld, data_array, lvl); +} + + +/** + * Gen code to fetch a texel from a texture at int coords (x, y). + * The result, texel, will be: + * texel[0] = red values + * texel[1] = green values + * texel[2] = blue values + * texel[3] = alpha values + */ static void lp_build_sample_texel_soa(struct lp_build_sample_context *bld, + LLVMValueRef width, + LLVMValueRef height, LLVMValueRef x, LLVMValueRef y, LLVMValueRef y_stride, LLVMValueRef data_ptr, LLVMValueRef *texel) { + struct lp_build_context *int_coord_bld = &bld->int_coord_bld; LLVMValueRef offset; LLVMValueRef packed; + LLVMValueRef use_border = NULL; + + /* use_border = x < 0 || x >= width || y < 0 || y >= height */ + if (wrap_mode_uses_border_color(bld->static_state->wrap_s)) { + LLVMValueRef b1, b2; + b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, x, int_coord_bld->zero); + b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, x, width); + use_border = LLVMBuildOr(bld->builder, b1, b2, "b1_or_b2"); + } + + if (wrap_mode_uses_border_color(bld->static_state->wrap_t)) { + LLVMValueRef b1, b2; + b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, y, int_coord_bld->zero); + b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, y, height); + if (use_border) { + use_border = LLVMBuildOr(bld->builder, use_border, b1, "ub_or_b1"); + use_border = LLVMBuildOr(bld->builder, use_border, b2, "ub_or_b2"); + } + else { + use_border = LLVMBuildOr(bld->builder, b1, b2, "b1_or_b2"); + } + } - offset = lp_build_sample_offset(&bld->int_coord_bld, + /* + * Note: if we find an app which frequently samples the texture border + * we might want to implement a true conditional here to avoid sampling + * the texture whenever possible (since that's quite a bit of code). + * Ex: + * if (use_border) { + * texel = border_color; + * } + * else { + * texel = sample_texture(coord); + * } + * As it is now, we always sample the texture, then selectively replace + * the texel color results with the border color. + */ + + /* convert x,y coords to linear offset from start of texture, in bytes */ + offset = lp_build_sample_offset(&bld->uint_coord_bld, bld->format_desc, - x, y, y_stride, - data_ptr); + x, y, y_stride); assert(bld->format_desc->block.width == 1); assert(bld->format_desc->block.height == 1); assert(bld->format_desc->block.bits <= bld->texel_type.width); + /* gather the texels from the texture */ packed = lp_build_gather(bld->builder, bld->texel_type.length, bld->format_desc->block.bits, bld->texel_type.width, data_ptr, offset); + /* convert texels to float rgba */ lp_build_unpack_rgba_soa(bld->builder, bld->format_desc, bld->texel_type, packed, texel); + + if (use_border) { + /* select texel color or border color depending on use_border */ + int chan; + for (chan = 0; chan < 4; chan++) { + LLVMValueRef border_chan = + lp_build_const_scalar(bld->texel_type, + bld->static_state->border_color[chan]); + texel[chan] = lp_build_select(&bld->texel_bld, use_border, + border_chan, texel[chan]); + } + } } @@ -117,19 +238,22 @@ lp_build_sample_packed(struct lp_build_sample_context *bld, LLVMValueRef x, LLVMValueRef y, LLVMValueRef y_stride, - LLVMValueRef data_ptr) + LLVMValueRef data_array) { LLVMValueRef offset; + LLVMValueRef data_ptr; - offset = lp_build_sample_offset(&bld->int_coord_bld, + offset = lp_build_sample_offset(&bld->uint_coord_bld, bld->format_desc, - x, y, y_stride, - data_ptr); + x, y, y_stride); assert(bld->format_desc->block.width == 1); assert(bld->format_desc->block.height == 1); assert(bld->format_desc->block.bits <= bld->texel_type.width); + /* get pointer to mipmap level 0 data */ + data_ptr = lp_build_get_const_mipmap_level(bld, data_array, 0); + return lp_build_gather(bld->builder, bld->texel_type.length, bld->format_desc->block.bits, @@ -138,17 +262,77 @@ 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(unsigned mode) +{ + switch (mode) { + case PIPE_TEX_WRAP_REPEAT: + case PIPE_TEX_WRAP_CLAMP: + case PIPE_TEX_WRAP_CLAMP_TO_EDGE: + return TRUE; + case PIPE_TEX_WRAP_CLAMP_TO_BORDER: + 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(int_coord_bld, length, int_coord_bld->one); + length_minus_one = lp_build_sub(uint_coord_bld, length, uint_coord_bld->one); switch(wrap_mode) { case PIPE_TEX_WRAP_REPEAT: @@ -161,12 +345,12 @@ lp_build_sample_wrap(struct lp_build_sample_context *bld, break; case PIPE_TEX_WRAP_CLAMP: + 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_CLAMP_TO_EDGE: - case PIPE_TEX_WRAP_CLAMP_TO_BORDER: case PIPE_TEX_WRAP_MIRROR_REPEAT: case PIPE_TEX_WRAP_MIRROR_CLAMP: case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE: @@ -174,8 +358,8 @@ lp_build_sample_wrap(struct lp_build_sample_context *bld, /* FIXME */ _debug_printf("llvmpipe: failed to translate texture wrap mode %s\n", util_dump_tex_wrap(wrap_mode, TRUE)); - coord = lp_build_max(int_coord_bld, coord, int_coord_bld->zero); - coord = lp_build_min(int_coord_bld, coord, length_minus_one); + coord = lp_build_max(uint_coord_bld, coord, uint_coord_bld->zero); + coord = lp_build_min(uint_coord_bld, coord, length_minus_one); break; default: @@ -186,6 +370,583 @@ 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 = 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 coord0, coord1, weight; + + switch(wrap_mode) { + case PIPE_TEX_WRAP_REPEAT: + /* mul by size and subtract 0.5 */ + coord = lp_build_mul(coord_bld, coord, length_f); + coord = lp_build_sub(coord_bld, coord, half); + /* convert to int */ + 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: + if (bld->static_state->normalized_coords) { + 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: + if (bld->static_state->normalized_coords) { + /* 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); + } + else { + LLVMValueRef min, max; + /* clamp to [0.5, length - 0.5] */ + min = lp_build_const_scalar(coord_bld->type, 0.5F); + max = lp_build_sub(coord_bld, length_f, min); + coord = lp_build_clamp(coord_bld, coord, min, max); + } + /* 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; + if (bld->static_state->normalized_coords) { + /* min = -1.0 / (2 * length) = -0.5 / length */ + min = lp_build_mul(coord_bld, + lp_build_const_scalar(coord_bld->type, -0.5F), + lp_build_rcp(coord_bld, length_f)); + /* max = 1.0 - min */ + max = lp_build_sub(coord_bld, coord_bld->one, min); + /* coord = clamp(coord, min, max) */ + coord = lp_build_clamp(coord_bld, coord, min, max); + /* scale coord to length (and sub 0.5?) */ + coord = lp_build_mul(coord_bld, coord, length_f); + coord = lp_build_sub(coord_bld, coord, half); + } + else { + /* clamp to [-0.5, length + 0.5] */ + min = lp_build_const_scalar(coord_bld->type, -0.5F); + max = lp_build_sub(coord_bld, length_f, min); + coord = lp_build_clamp(coord_bld, coord, min, max); + coord = lp_build_sub(coord_bld, coord, half); + } + /* compute lerp weight */ + weight = lp_build_fract(coord_bld, coord); + /* 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: + { + LLVMValueRef min, max; + /* min = 1.0 / (2 * length) */ + min = lp_build_rcp(coord_bld, lp_build_mul(coord_bld, two, length_f)); + /* max = 1.0 - min */ + max = lp_build_sub(coord_bld, coord_bld->one, min); + + coord = lp_build_abs(coord_bld, coord); + coord = lp_build_clamp(coord_bld, coord, min, max); + coord = lp_build_mul(coord_bld, coord, length_f); + if(0)coord = lp_build_sub(coord_bld, coord, half); + weight = lp_build_fract(coord_bld, coord); + 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 = 1.0 - min */ + max = lp_build_sub(coord_bld, coord_bld->one, min); + + coord = lp_build_abs(coord_bld, coord); + coord = lp_build_clamp(coord_bld, coord, min, max); + coord = lp_build_mul(coord_bld, coord, length_f); + coord = lp_build_sub(coord_bld, coord, half); + weight = lp_build_fract(coord_bld, coord); + 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) = -0.5 / length */ + min = lp_build_mul(coord_bld, + lp_build_const_scalar(coord_bld->type, -0.5F), + lp_build_rcp(coord_bld, length_f)); + /* max = 1.0 - min */ + max = lp_build_sub(coord_bld, coord_bld->one, min); + + coord = lp_build_abs(coord_bld, coord); + coord = lp_build_clamp(coord_bld, coord, min, max); + coord = lp_build_mul(coord_bld, coord, length_f); + coord = lp_build_sub(coord_bld, coord, half); + weight = lp_build_fract(coord_bld, coord); + coord0 = lp_build_ifloor(coord_bld, coord); + coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); + } + break; + + default: + assert(0); + coord0 = NULL; + coord1 = NULL; + weight = NULL; + } + + *x0_out = coord0; + *x1_out = coord1; + *weight_out = weight; +} + + +/** + * Build LLVM code for texture wrap mode for nearest filtering. + * \param coord the incoming texcoord (nominally in [0,1]) + * \param length the texture size along one dimension, as int + * \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; + + 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 */ + if (bld->static_state->normalized_coords) { + 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; + if (bld->static_state->normalized_coords) { + /* 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); + } + else { + /* clamp to [0.5, length - 0.5] */ + min = lp_build_const_scalar(coord_bld->type, 0.5F); + max = lp_build_sub(coord_bld, length_f, min); + } + /* 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; + if (bld->static_state->normalized_coords) { + /* min = -1.0 / (2 * length) = -0.5 / length */ + min = lp_build_mul(coord_bld, + lp_build_const_scalar(coord_bld->type, -0.5F), + lp_build_rcp(coord_bld, 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); + } + else { + /* clamp to [-0.5, length + 0.5] */ + min = lp_build_const_scalar(coord_bld->type, -0.5F); + max = lp_build_sub(coord_bld, length_f, min); + } + /* 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); + icoord = NULL; + } + + return icoord; +} + + +/** + * Codegen equivalent for u_minify(). + * Return max(1, base_size >> level); + */ +static LLVMValueRef +lp_build_minify(struct lp_build_sample_context *bld, + LLVMValueRef base_size, + LLVMValueRef level) +{ + LLVMValueRef size = LLVMBuildAShr(bld->builder, base_size, level, "minify"); + size = lp_build_max(&bld->int_coord_bld, size, bld->int_coord_bld.one); + return size; +} + + +static int +texture_dims(enum pipe_texture_target tex) +{ + switch (tex) { + case PIPE_TEXTURE_1D: + return 1; + case PIPE_TEXTURE_2D: + case PIPE_TEXTURE_CUBE: + return 2; + case PIPE_TEXTURE_3D: + return 3; + default: + assert(0 && "bad texture target in texture_dims()"); + return 2; + } +} + + +/** + * Generate code to compute texture level of detail (lambda). + * \param s vector of texcoord s values + * \param t vector of texcoord t values + * \param r vector of texcoord r values + * \param width scalar int texture width + * \param height scalar int texture height + * \param depth scalar int texture depth + */ +static LLVMValueRef +lp_build_lod_selector(struct lp_build_sample_context *bld, + LLVMValueRef s, + LLVMValueRef t, + LLVMValueRef r, + LLVMValueRef width, + LLVMValueRef height, + LLVMValueRef depth) + +{ + const int dims = texture_dims(bld->static_state->target); + struct lp_build_context *coord_bld = &bld->coord_bld; + struct lp_build_context *float_bld = &bld->float_bld; + LLVMValueRef lod_bias = LLVMConstReal(LLVMFloatType(), bld->static_state->lod_bias); + LLVMValueRef min_lod = LLVMConstReal(LLVMFloatType(), bld->static_state->min_lod); + LLVMValueRef max_lod = LLVMConstReal(LLVMFloatType(), bld->static_state->max_lod); + + LLVMValueRef index0 = LLVMConstInt(LLVMInt32Type(), 0, 0); + LLVMValueRef index1 = LLVMConstInt(LLVMInt32Type(), 1, 0); + LLVMValueRef index2 = LLVMConstInt(LLVMInt32Type(), 2, 0); + + LLVMValueRef s0, s1, s2; + LLVMValueRef t0, t1, t2; + LLVMValueRef r0, r1, r2; + LLVMValueRef dsdx, dsdy, dtdx, dtdy, drdx, drdy; + LLVMValueRef rho, lod; + + /* + * dsdx = abs(s[1] - s[0]); + * dsdy = abs(s[2] - s[0]); + * dtdx = abs(t[1] - t[0]); + * dtdy = abs(t[2] - t[0]); + * drdx = abs(r[1] - r[0]); + * drdy = abs(r[2] - r[0]); + * XXX we're assuming a four-element quad in 2x2 layout here. + */ + s0 = LLVMBuildExtractElement(bld->builder, s, index0, "s0"); + s1 = LLVMBuildExtractElement(bld->builder, s, index1, "s1"); + s2 = LLVMBuildExtractElement(bld->builder, s, index2, "s2"); + dsdx = LLVMBuildSub(bld->builder, s1, s0, ""); + dsdx = lp_build_abs(float_bld, dsdx); + dsdy = LLVMBuildSub(bld->builder, s2, s0, ""); + dsdy = lp_build_abs(float_bld, dsdy); + if (dims > 1) { + t0 = LLVMBuildExtractElement(bld->builder, t, index0, "t0"); + t1 = LLVMBuildExtractElement(bld->builder, t, index1, "t1"); + t2 = LLVMBuildExtractElement(bld->builder, t, index2, "t2"); + dtdx = LLVMBuildSub(bld->builder, t1, t0, ""); + dtdx = lp_build_abs(float_bld, dtdx); + dtdy = LLVMBuildSub(bld->builder, t2, t0, ""); + dtdy = lp_build_abs(float_bld, dtdy); + if (dims > 2) { + r0 = LLVMBuildExtractElement(bld->builder, r, index0, "r0"); + r1 = LLVMBuildExtractElement(bld->builder, r, index1, "r1"); + r2 = LLVMBuildExtractElement(bld->builder, r, index2, "r2"); + drdx = LLVMBuildSub(bld->builder, r1, r0, ""); + drdx = lp_build_abs(float_bld, drdx); + drdy = LLVMBuildSub(bld->builder, r2, r0, ""); + drdy = lp_build_abs(float_bld, drdy); + } + } + + /* Compute rho = max of all partial derivatives scaled by texture size. + * XXX this could be vectorized somewhat + */ + rho = LLVMBuildMul(bld->builder, + lp_build_max(float_bld, dsdx, dsdy), + lp_build_int_to_float(float_bld, width), ""); + if (dims > 1) { + LLVMValueRef max; + max = LLVMBuildMul(bld->builder, + lp_build_max(float_bld, dtdx, dtdy), + lp_build_int_to_float(float_bld, height), ""); + rho = lp_build_max(float_bld, rho, max); + if (dims > 2) { + max = LLVMBuildMul(bld->builder, + lp_build_max(float_bld, drdx, drdy), + lp_build_int_to_float(float_bld, depth), ""); + rho = lp_build_max(float_bld, rho, max); + } + } + + /* compute lod = log2(rho) */ + lod = lp_build_log2(float_bld, rho); + + /* add lod bias */ + lod = LLVMBuildAdd(bld->builder, lod, lod_bias, "LOD bias"); + + /* clamp lod */ + lod = lp_build_clamp(float_bld, lod, min_lod, max_lod); + + return lod; +} + + +/** + * 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 + */ +static void +lp_build_nearest_mip_level(struct lp_build_sample_context *bld, + unsigned unit, + LLVMValueRef lod, + LLVMValueRef *level_out) +{ + struct lp_build_context *float_bld = &bld->float_bld; + struct lp_build_context *int_bld = &bld->int_bld; + LLVMValueRef last_level, level; + + LLVMValueRef zero = LLVMConstInt(LLVMInt32Type(), 0, 0); + + last_level = bld->dynamic_state->last_level(bld->dynamic_state, + bld->builder, unit); + + /* convert float lod to integer */ + level = lp_build_iround(float_bld, lod); + + /* 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. + */ +static void +lp_build_linear_mip_levels(struct lp_build_sample_context *bld, + unsigned unit, + LLVMValueRef lod, + LLVMValueRef *level0_out, + LLVMValueRef *level1_out, + LLVMValueRef *weight_out) +{ + struct lp_build_context *coord_bld = &bld->coord_bld; + struct lp_build_context *int_coord_bld = &bld->int_coord_bld; + LLVMValueRef last_level, level; + + last_level = bld->dynamic_state->last_level(bld->dynamic_state, + bld->builder, unit); + + /* convert float lod to integer */ + level = lp_build_ifloor(coord_bld, lod); + + /* compute level 0 and clamp to legal range of levels */ + *level0_out = lp_build_clamp(int_coord_bld, level, + int_coord_bld->zero, + last_level); + /* compute level 1 and clamp to legal range of levels */ + *level1_out = lp_build_add(int_coord_bld, *level0_out, int_coord_bld->one); + *level1_out = lp_build_min(int_coord_bld, *level1_out, int_coord_bld->zero); + + *weight_out = lp_build_fract(coord_bld, lod); +} + + + +/** + * Sample 2D texture with nearest filtering, no mipmapping. + */ static void lp_build_sample_2d_nearest_soa(struct lp_build_sample_context *bld, LLVMValueRef s, @@ -193,26 +954,85 @@ lp_build_sample_2d_nearest_soa(struct lp_build_sample_context *bld, LLVMValueRef width, LLVMValueRef height, LLVMValueRef stride, - LLVMValueRef data_ptr, + LLVMValueRef data_array, LLVMValueRef *texel) { - LLVMValueRef x; - LLVMValueRef y; + LLVMValueRef x, y; + LLVMValueRef data_ptr; + + 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); + + lp_build_name(x, "tex.x.wrapped"); + lp_build_name(y, "tex.y.wrapped"); + + /* get pointer to mipmap level 0 data */ + data_ptr = lp_build_get_const_mipmap_level(bld, data_array, 0); + + lp_build_sample_texel_soa(bld, width, height, x, y, stride, data_ptr, texel); +} + + +/** + * Sample 2D texture with nearest filtering, nearest mipmap. + */ +static void +lp_build_sample_2d_nearest_mip_nearest_soa(struct lp_build_sample_context *bld, + unsigned unit, + LLVMValueRef s, + LLVMValueRef t, + LLVMValueRef width, + LLVMValueRef height, + LLVMValueRef width_vec, + LLVMValueRef height_vec, + LLVMValueRef stride, + LLVMValueRef data_array, + LLVMValueRef *texel) +{ + LLVMValueRef x, y; + LLVMValueRef lod, ilevel, ilevel_vec; + LLVMValueRef data_ptr; + + /* compute float LOD */ + lod = lp_build_lod_selector(bld, s, t, NULL, width, height, NULL); + + /* convert LOD to int */ + lp_build_nearest_mip_level(bld, unit, lod, &ilevel); - 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"); + ilevel_vec = lp_build_broadcast_scalar(&bld->int_coord_bld, ilevel); + + /* compute width_vec, height at mipmap level 'ilevel' */ + width_vec = lp_build_minify(bld, width_vec, ilevel_vec); + height_vec = lp_build_minify(bld, height_vec, ilevel_vec); + stride = lp_build_minify(bld, stride, ilevel_vec); + + x = lp_build_sample_wrap_nearest(bld, s, width_vec, + bld->static_state->pot_width, + bld->static_state->wrap_s); + y = lp_build_sample_wrap_nearest(bld, t, height_vec, + 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"); - lp_build_sample_texel_soa(bld, x, y, stride, data_ptr, texel); + /* get pointer to mipmap level [ilevel] data */ + if (0) + data_ptr = lp_build_get_mipmap_level(bld, data_array, ilevel); + else + data_ptr = lp_build_get_const_mipmap_level(bld, data_array, 0); + + lp_build_sample_texel_soa(bld, width_vec, height_vec, x, y, stride, data_ptr, texel); } +/** + * Sample 2D texture with bilinear filtering. + */ static void lp_build_sample_2d_linear_soa(struct lp_build_sample_context *bld, LLVMValueRef s, @@ -220,45 +1040,29 @@ lp_build_sample_2d_linear_soa(struct lp_build_sample_context *bld, LLVMValueRef width, LLVMValueRef height, LLVMValueRef stride, - LLVMValueRef data_ptr, + LLVMValueRef data_array, LLVMValueRef *texel) { - LLVMValueRef half; - LLVMValueRef s_ipart; - LLVMValueRef t_ipart; LLVMValueRef s_fpart; LLVMValueRef t_fpart; LLVMValueRef x0, x1; LLVMValueRef y0, y1; LLVMValueRef neighbors[2][2][4]; + LLVMValueRef data_ptr; 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->int_coord_bld, x0, bld->int_coord_bld.one); - y1 = lp_build_add(&bld->int_coord_bld, y0, bld->int_coord_bld.one); + 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); - 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); + /* get pointer to mipmap level 0 data */ + data_ptr = lp_build_get_const_mipmap_level(bld, data_array, 0); - 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]); - lp_build_sample_texel_soa(bld, x0, y1, stride, data_ptr, neighbors[1][0]); - lp_build_sample_texel_soa(bld, x1, y1, stride, data_ptr, neighbors[1][1]); + lp_build_sample_texel_soa(bld, width, height, x0, y0, stride, data_ptr, neighbors[0][0]); + lp_build_sample_texel_soa(bld, width, height, x1, y0, stride, data_ptr, neighbors[0][1]); + lp_build_sample_texel_soa(bld, width, height, x0, y1, stride, data_ptr, neighbors[1][0]); + lp_build_sample_texel_soa(bld, width, height, x1, y1, stride, data_ptr, neighbors[1][1]); /* TODO: Don't interpolate missing channels */ for(chan = 0; chan < 4; ++chan) { @@ -309,7 +1113,7 @@ lp_build_sample_2d_linear_aos(struct lp_build_sample_context *bld, LLVMValueRef width, LLVMValueRef height, LLVMValueRef stride, - LLVMValueRef data_ptr, + LLVMValueRef data_array, LLVMValueRef *texel) { LLVMBuilderRef builder = bld->builder; @@ -326,7 +1130,7 @@ lp_build_sample_2d_linear_aos(struct lp_build_sample_context *bld, LLVMValueRef packed, packed_lo, packed_hi; LLVMValueRef unswizzled[4]; - lp_build_context_init(&i32, builder, lp_type_int(32)); + lp_build_context_init(&i32, builder, lp_type_int_vec(32)); lp_build_context_init(&h16, builder, lp_type_ufixed(16)); lp_build_context_init(&u8n, builder, lp_type_unorm(8)); @@ -334,20 +1138,33 @@ 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 +1172,18 @@ 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_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); + 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_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 @@ -432,10 +1253,10 @@ lp_build_sample_2d_linear_aos(struct lp_build_sample_context *bld, * The higher 8 bits of the resulting elements will be zero. */ - neighbors[0][0] = lp_build_sample_packed(bld, x0, y0, stride, data_ptr); - neighbors[0][1] = lp_build_sample_packed(bld, x1, y0, stride, data_ptr); - neighbors[1][0] = lp_build_sample_packed(bld, x0, y1, stride, data_ptr); - neighbors[1][1] = lp_build_sample_packed(bld, x1, y1, stride, data_ptr); + neighbors[0][0] = lp_build_sample_packed(bld, x0, y0, stride, data_array); + neighbors[0][1] = lp_build_sample_packed(bld, x1, y0, stride, data_array); + neighbors[1][0] = lp_build_sample_packed(bld, x0, y1, stride, data_array); + neighbors[1][1] = lp_build_sample_packed(bld, x1, y1, stride, data_array); neighbors[0][0] = LLVMBuildBitCast(builder, neighbors[0][0], u8n_vec_type, ""); neighbors[0][1] = LLVMBuildBitCast(builder, neighbors[0][1], u8n_vec_type, ""); @@ -518,6 +1339,12 @@ lp_build_sample_compare(struct lp_build_sample_context *bld, } +/** + * Build texture sampling code. + * 'texel' will return a vector of four LLVMValueRefs corresponding to + * R, G, B, A. + * \param type vector float type to use for coords, etc. + */ void lp_build_sample_soa(LLVMBuilderRef builder, const struct lp_sampler_static_state *static_state, @@ -530,13 +1357,19 @@ lp_build_sample_soa(LLVMBuilderRef builder, LLVMValueRef *texel) { struct lp_build_sample_context bld; - LLVMValueRef width; - LLVMValueRef height; - LLVMValueRef stride; - LLVMValueRef data_ptr; + LLVMValueRef width, width_vec; + LLVMValueRef height, height_vec; + LLVMValueRef stride, stride_vec; + LLVMValueRef data_array; LLVMValueRef s; LLVMValueRef t; - LLVMValueRef p; + LLVMValueRef r; + boolean done = FALSE; + + (void) lp_build_lod_selector; /* temporary to silence warning */ + (void) lp_build_nearest_mip_level; + (void) lp_build_linear_mip_levels; + (void) lp_build_minify; /* Setup our build context */ memset(&bld, 0, sizeof bld); @@ -544,10 +1377,18 @@ lp_build_sample_soa(LLVMBuilderRef builder, bld.static_state = static_state; bld.dynamic_state = dynamic_state; bld.format_desc = util_format_description(static_state->format); + + bld.float_type = lp_type_float(32); + bld.int_type = lp_type_int(32); 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.float_bld, builder, bld.float_type); + lp_build_context_init(&bld.int_bld, builder, bld.int_type); lp_build_context_init(&bld.coord_bld, builder, bld.coord_type); + lp_build_context_init(&bld.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); @@ -555,43 +1396,67 @@ lp_build_sample_soa(LLVMBuilderRef builder, width = dynamic_state->width(dynamic_state, builder, unit); height = dynamic_state->height(dynamic_state, builder, unit); stride = dynamic_state->stride(dynamic_state, builder, unit); - data_ptr = dynamic_state->data_ptr(dynamic_state, builder, unit); + data_array = dynamic_state->data_ptr(dynamic_state, builder, unit); + /* Note that data_array is an array[level] of pointers to texture images */ s = coords[0]; t = coords[1]; - p = coords[2]; + r = coords[2]; - width = lp_build_broadcast_scalar(&bld.int_coord_bld, width); - height = lp_build_broadcast_scalar(&bld.int_coord_bld, height); - stride = lp_build_broadcast_scalar(&bld.int_coord_bld, stride); + width_vec = lp_build_broadcast_scalar(&bld.uint_coord_bld, width); + height_vec = lp_build_broadcast_scalar(&bld.uint_coord_bld, height); + stride_vec = lp_build_broadcast_scalar(&bld.uint_coord_bld, stride); 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_mip_filter) { + case PIPE_TEX_MIPFILTER_NONE: + break; + case PIPE_TEX_MIPFILTER_NEAREST: + + switch (static_state->min_img_filter) { + case PIPE_TEX_FILTER_NEAREST: + lp_build_sample_2d_nearest_mip_nearest_soa(&bld, unit, + s, t, + width, height, + width_vec, height_vec, + stride_vec, + data_array, texel); + done = TRUE; + break; + } - 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); 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); - else - lp_build_sample_2d_linear_soa(&bld, s, t, width, height, stride, data_ptr, texel); + case PIPE_TEX_MIPFILTER_LINEAR: break; default: - assert(0); + assert(0 && "invalid mip filter"); + } + + if (!done) { + switch (static_state->min_img_filter) { + case PIPE_TEX_FILTER_NEAREST: + lp_build_sample_2d_nearest_soa(&bld, s, t, width_vec, height_vec, + stride_vec, data_array, texel); + break; + case PIPE_TEX_FILTER_LINEAR: + 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_vec, height_vec, + stride_vec, data_array, texel); + else + lp_build_sample_2d_linear_soa(&bld, s, t, width_vec, height_vec, + stride_vec, data_array, texel); + break; + default: + assert(0); + } } /* FIXME: respect static_state->min_mip_filter */; /* FIXME: respect static_state->mag_img_filter */; - lp_build_sample_compare(&bld, p, texel); + lp_build_sample_compare(&bld, r, texel); } |