diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/drivers/softpipe/sp_tex_sample.c | 92 |
1 files changed, 88 insertions, 4 deletions
diff --git a/src/gallium/drivers/softpipe/sp_tex_sample.c b/src/gallium/drivers/softpipe/sp_tex_sample.c index 82830107402..3bc4599e045 100644 --- a/src/gallium/drivers/softpipe/sp_tex_sample.c +++ b/src/gallium/drivers/softpipe/sp_tex_sample.c @@ -917,8 +917,43 @@ img_filter_1d_nearest(struct tgsi_sampler *tgsi_sampler, } +static void +img_filter_2d_nearest(struct tgsi_sampler *tgsi_sampler, + const float s[QUAD_SIZE], + const float t[QUAD_SIZE], + const float p[QUAD_SIZE], + float lodbias, + float rgba[NUM_CHANNELS][QUAD_SIZE]) +{ + const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler); + const struct pipe_texture *texture = samp->texture; + unsigned level0, j; + int width, height; + int x[4], y[4]; + union tex_tile_address addr; + level0 = samp->level; + width = texture->width[level0]; + height = texture->height[level0]; + + assert(width > 0); + + addr.value = 0; + addr.bits.level = samp->level; + + samp->nearest_texcoord_s(s, width, x); + samp->nearest_texcoord_t(t, height, y); + + for (j = 0; j < QUAD_SIZE; j++) { + const float *out = get_texel_2d(samp, addr, x[j], y[j]); + int c; + for (c = 0; c < 4; c++) { + rgba[c][j] = out[c]; + } + } +} + static inline union tex_tile_address face( union tex_tile_address addr, unsigned face ) { @@ -927,7 +962,7 @@ static inline union tex_tile_address face( union tex_tile_address addr, } static void -img_filter_2d_nearest(struct tgsi_sampler *tgsi_sampler, +img_filter_cube_nearest(struct tgsi_sampler *tgsi_sampler, const float s[QUAD_SIZE], const float t[QUAD_SIZE], const float p[QUAD_SIZE], @@ -1047,10 +1082,54 @@ img_filter_1d_linear(struct tgsi_sampler *tgsi_sampler, } +static void +img_filter_2d_linear(struct tgsi_sampler *tgsi_sampler, + const float s[QUAD_SIZE], + const float t[QUAD_SIZE], + const float p[QUAD_SIZE], + float lodbias, + float rgba[NUM_CHANNELS][QUAD_SIZE]) +{ + const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler); + const struct pipe_texture *texture = samp->texture; + unsigned level0, j; + int width, height; + int x0[4], y0[4], x1[4], y1[4]; + float xw[4], yw[4]; /* weights */ + union tex_tile_address addr; + + + level0 = samp->level; + width = texture->width[level0]; + height = texture->height[level0]; + + assert(width > 0); + + addr.value = 0; + addr.bits.level = samp->level; + + samp->linear_texcoord_s(s, width, x0, x1, xw); + samp->linear_texcoord_t(t, height, y0, y1, yw); + + for (j = 0; j < QUAD_SIZE; j++) { + const float *tx0 = get_texel_2d(samp, addr, x0[j], y0[j]); + const float *tx1 = get_texel_2d(samp, addr, x1[j], y0[j]); + const float *tx2 = get_texel_2d(samp, addr, x0[j], y1[j]); + const float *tx3 = get_texel_2d(samp, addr, x1[j], y1[j]); + int c; + + /* interpolate R, G, B, A */ + for (c = 0; c < 4; c++) { + rgba[c][j] = lerp_2d(xw[j], yw[j], + tx0[c], tx1[c], + tx2[c], tx3[c]); + } + } +} static void -img_filter_2d_linear(struct tgsi_sampler *tgsi_sampler, +img_filter_cube_linear(struct tgsi_sampler *tgsi_sampler, const float s[QUAD_SIZE], const float t[QUAD_SIZE], const float p[QUAD_SIZE], @@ -1615,14 +1694,19 @@ static filter_func get_img_filter( const union sp_sampler_key key, } } } - /* Fallthrough to default versions: + /* Otherwise use default versions: */ - case PIPE_TEXTURE_CUBE: if (filter == PIPE_TEX_FILTER_NEAREST) return img_filter_2d_nearest; else return img_filter_2d_linear; break; + case PIPE_TEXTURE_CUBE: + if (filter == PIPE_TEX_FILTER_NEAREST) + return img_filter_cube_nearest; + else + return img_filter_cube_linear; + break; case PIPE_TEXTURE_3D: if (filter == PIPE_TEX_FILTER_NEAREST) return img_filter_3d_nearest; |