diff options
Diffstat (limited to 'src/gallium/drivers/cell/spu/spu_texture.c')
| -rw-r--r-- | src/gallium/drivers/cell/spu/spu_texture.c | 171 |
1 files changed, 152 insertions, 19 deletions
diff --git a/src/gallium/drivers/cell/spu/spu_texture.c b/src/gallium/drivers/cell/spu/spu_texture.c index b21c43a467..2570f02c73 100644 --- a/src/gallium/drivers/cell/spu/spu_texture.c +++ b/src/gallium/drivers/cell/spu/spu_texture.c @@ -48,6 +48,9 @@ invalidate_tex_cache(void) uint bytes = 4 * spu.texture[unit].level[lvl].width * spu.texture[unit].level[lvl].height; + if (spu.texture[unit].target == PIPE_TEXTURE_CUBE) + bytes *= 6; + spu_dcache_mark_dirty((unsigned) spu.texture[unit].level[lvl].start, bytes); } } @@ -67,11 +70,11 @@ invalidate_tex_cache(void) * a time. */ static void -get_four_texels(uint unit, uint level, vec_int4 x, vec_int4 y, +get_four_texels(uint unit, uint level, uint face, vec_int4 x, vec_int4 y, vec_uint4 *texels) { const struct spu_texture_level *tlevel = &spu.texture[unit].level[level]; - const unsigned texture_ea = (uintptr_t) tlevel->start; + unsigned texture_ea = (uintptr_t) tlevel->start; const vec_int4 tile_x = spu_rlmask(x, -5); /* tile_x = x / 32 */ const vec_int4 tile_y = spu_rlmask(y, -5); /* tile_y = y / 32 */ const qword offset_x = si_andi((qword) x, 0x1f); /* offset_x = x & 0x1f */ @@ -88,6 +91,8 @@ get_four_texels(uint unit, uint level, vec_int4 x, vec_int4 y, vec_uint4 offset = (vec_uint4) si_a(tile_offset, texel_offset); + texture_ea = texture_ea + face * tlevel->bytes_per_image; + spu_dcache_fetch_unaligned((qword *) & texels[0], texture_ea + spu_extract(offset, 0), 4); spu_dcache_fetch_unaligned((qword *) & texels[1], @@ -121,7 +126,8 @@ spu_clamp(vector signed int vec, vector signed int max) void sample_texture4_nearest(vector float s, vector float t, vector float r, vector float q, - uint unit, uint level, vector float colors[4]) + uint unit, uint level, uint face, + vector float colors[4]) { const struct spu_texture_level *tlevel = &spu.texture[unit].level[level]; vector float ss = spu_mul(s, tlevel->scale_s); @@ -138,7 +144,7 @@ sample_texture4_nearest(vector float s, vector float t, is = spu_clamp(is, tlevel->max_s); it = spu_clamp(it, tlevel->max_t); - get_four_texels(unit, level, is, it, texels); + get_four_texels(unit, level, face, is, it, texels); /* convert four packed ARGBA pixels to float RRRR,GGGG,BBBB,AAAA */ spu_unpack_A8R8G8B8_transpose4(texels, colors); @@ -152,11 +158,14 @@ sample_texture4_nearest(vector float s, vector float t, void sample_texture4_bilinear(vector float s, vector float t, vector float r, vector float q, - uint unit, uint level, vector float colors[4]) + uint unit, uint level, uint face, + vector float colors[4]) { const struct spu_texture_level *tlevel = &spu.texture[unit].level[level]; - vector float ss = spu_madd(s, tlevel->scale_s, spu_splats(-0.5f)); - vector float tt = spu_madd(t, tlevel->scale_t, spu_splats(-0.5f)); + static const vector float half = {-0.5f, -0.5f, -0.5f, -0.5f}; + + vector float ss = spu_madd(s, tlevel->scale_s, half); + vector float tt = spu_madd(t, tlevel->scale_t, half); vector signed int is0 = spu_convts(ss, 0); vector signed int it0 = spu_convts(tt, 0); @@ -179,10 +188,10 @@ sample_texture4_bilinear(vector float s, vector float t, /* get packed int texels */ vector unsigned int texels[16]; - get_four_texels(unit, level, is0, it0, texels + 0); /* upper-left */ - get_four_texels(unit, level, is1, it0, texels + 4); /* upper-right */ - get_four_texels(unit, level, is0, it1, texels + 8); /* lower-left */ - get_four_texels(unit, level, is1, it1, texels + 12); /* lower-right */ + get_four_texels(unit, level, face, is0, it0, texels + 0); /* upper-left */ + get_four_texels(unit, level, face, is1, it0, texels + 4); /* upper-right */ + get_four_texels(unit, level, face, is0, it1, texels + 8); /* lower-left */ + get_four_texels(unit, level, face, is1, it1, texels + 12); /* lower-right */ /* XXX possibly rework following code to compute the weighted sample * colors with integer arithmetic for fewer int->float conversions. @@ -299,10 +308,12 @@ transpose(vector unsigned int *mOut0, void sample_texture4_bilinear_2(vector float s, vector float t, vector float r, vector float q, - uint unit, uint level, vector float colors[4]) + uint unit, uint level, uint face, + vector float colors[4]) { const struct spu_texture_level *tlevel = &spu.texture[unit].level[level]; static const vector float half = {-0.5f, -0.5f, -0.5f, -0.5f}; + /* Scale texcoords by size of texture, and add half pixel bias */ vector float ss = spu_madd(s, tlevel->scale_s, half); vector float tt = spu_madd(t, tlevel->scale_t, half); @@ -339,10 +350,10 @@ sample_texture4_bilinear_2(vector float s, vector float t, /* get packed int texels */ vector unsigned int texels[16]; - get_four_texels(unit, level, is0, it0, texels + 0); /* upper-left */ - get_four_texels(unit, level, is1, it0, texels + 4); /* upper-right */ - get_four_texels(unit, level, is0, it1, texels + 8); /* lower-left */ - get_four_texels(unit, level, is1, it1, texels + 12); /* lower-right */ + get_four_texels(unit, level, face, is0, it0, texels + 0); /* upper-left */ + get_four_texels(unit, level, face, is1, it0, texels + 4); /* upper-right */ + get_four_texels(unit, level, face, is0, it1, texels + 8); /* lower-left */ + get_four_texels(unit, level, face, is1, it1, texels + 12); /* lower-right */ /* twiddle packed 32-bit BGRA pixels into RGBA as four unsigned ints */ { @@ -433,7 +444,8 @@ compute_lambda(uint unit, vector float s, vector float t) void sample_texture4_lod(vector float s, vector float t, vector float r, vector float q, - uint unit, uint level_ignored, vector float colors[4]) + uint unit, uint level_ignored, uint face, + vector float colors[4]) { /* * Note that we're computing a lambda/lod here that's used for all @@ -452,15 +464,136 @@ sample_texture4_lod(vector float s, vector float t, if (lambda <= 0.0f) { /* magnify */ - spu.mag_sample_texture4[unit](s, t, r, q, unit, 0, colors); + spu.mag_sample_texture4[unit](s, t, r, q, unit, 0, 0, colors); } else { /* minify */ int level = (int) (lambda + 0.5f); if (level > (int) spu.texture[unit].max_level) level = spu.texture[unit].max_level; - spu.min_sample_texture4[unit](s, t, r, q, unit, level, colors); + spu.min_sample_texture4[unit](s, t, r, q, unit, level, 0, colors); /* XXX to do: mipmap level interpolation */ } } + +/** XXX need a SIMD version of this */ +static unsigned +choose_cube_face(float rx, float ry, float rz, float *newS, float *newT) +{ + /* + major axis + direction target sc tc ma + ---------- ------------------------------- --- --- --- + +rx TEXTURE_CUBE_MAP_POSITIVE_X_EXT -rz -ry rx + -rx TEXTURE_CUBE_MAP_NEGATIVE_X_EXT +rz -ry rx + +ry TEXTURE_CUBE_MAP_POSITIVE_Y_EXT +rx +rz ry + -ry TEXTURE_CUBE_MAP_NEGATIVE_Y_EXT +rx -rz ry + +rz TEXTURE_CUBE_MAP_POSITIVE_Z_EXT +rx -ry rz + -rz TEXTURE_CUBE_MAP_NEGATIVE_Z_EXT -rx -ry rz + */ + const float arx = fabsf(rx); + const float ary = fabsf(ry); + const float arz = fabsf(rz); + unsigned face; + float sc, tc, ma; + + if (arx > ary && arx > arz) { + if (rx >= 0.0F) { + face = PIPE_TEX_FACE_POS_X; + sc = -rz; + tc = -ry; + ma = arx; + } + else { + face = PIPE_TEX_FACE_NEG_X; + sc = rz; + tc = -ry; + ma = arx; + } + } + else if (ary > arx && ary > arz) { + if (ry >= 0.0F) { + face = PIPE_TEX_FACE_POS_Y; + sc = rx; + tc = rz; + ma = ary; + } + else { + face = PIPE_TEX_FACE_NEG_Y; + sc = rx; + tc = -rz; + ma = ary; + } + } + else { + if (rz > 0.0F) { + face = PIPE_TEX_FACE_POS_Z; + sc = rx; + tc = -ry; + ma = arz; + } + else { + face = PIPE_TEX_FACE_NEG_Z; + sc = -rx; + tc = -ry; + ma = arz; + } + } + + *newS = (sc / ma + 1.0F) * 0.5F; + *newT = (tc / ma + 1.0F) * 0.5F; + + return face; +} + + + +void +sample_texture4_cube(vector float s, vector float t, + vector float r, vector float q, + uint unit, uint level, int face_ignored, + vector float colors[4]) +{ + static const vector float zero = {0.0f, 0.0f, 0.0f, 0.0f}; + uint p, faces[4]; + float newS[4], newT[4]; + + /* Compute cube face referenced by the four sets of texcoords. + * XXX we should SIMD-ize this. + */ + for (p = 0; p < 4; p++) { + float rx = spu_extract(s, p); + float ry = spu_extract(t, p); + float rz = spu_extract(r, p); + faces[p] = choose_cube_face(rx, ry, rz, &newS[p], &newT[p]); + } + + if (faces[0] == faces[1] && + faces[0] == faces[2] && + faces[0] == faces[3]) { + /* GOOD! All four texcoords refer to the same cube face */ + s = (vector float) {newS[0], newS[1], newS[2], newS[3]}; + t = (vector float) {newT[0], newT[1], newT[2], newT[3]}; + sample_texture4_nearest(s, t, zero, zero, unit, level, faces[0], colors); + } + else { + /* BAD! The four texcoords refer to different faces */ + for (p = 0; p < 4; p++) { + vector float c[4]; + + sample_texture4_nearest(spu_splats(newS[p]), spu_splats(newT[p]), + zero, zero, unit, level, faces[p], c); + + float red = spu_extract(c[0], p); + float green = spu_extract(c[1], p); + float blue = spu_extract(c[2], p); + float alpha = spu_extract(c[3], p); + + colors[0] = spu_insert(red, colors[0], p); + colors[1] = spu_insert(green, colors[1], p); + colors[2] = spu_insert(blue, colors[2], p); + colors[3] = spu_insert(alpha, colors[3], p); + } + } +} |