From: Brian Paul Date: Mon, 13 Oct 2008 16:55:08 +0000 (-0600) Subject: cell: do texture sampling/filtering for four pixels at a time. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3b07c28dee74c7aa3be5efac8084d610675af291;p=mesa.git cell: do texture sampling/filtering for four pixels at a time. --- diff --git a/src/gallium/drivers/cell/spu/spu_command.c b/src/gallium/drivers/cell/spu/spu_command.c index 91a4c137e7c..c59be7defde 100644 --- a/src/gallium/drivers/cell/spu/spu_command.c +++ b/src/gallium/drivers/cell/spu/spu_command.c @@ -301,10 +301,14 @@ cmd_state_sampler(const struct cell_command_sampler *sampler) DEBUG_PRINTF("SAMPLER [%u]\n", sampler->unit); spu.sampler[sampler->unit] = sampler->state; - if (spu.sampler[sampler->unit].min_img_filter == PIPE_TEX_FILTER_LINEAR) + if (spu.sampler[sampler->unit].min_img_filter == PIPE_TEX_FILTER_LINEAR) { spu.sample_texture[sampler->unit] = sample_texture_bilinear; - else + spu.sample_texture4[sampler->unit] = sample_texture4_bilinear; + } + else { spu.sample_texture[sampler->unit] = sample_texture_nearest; + spu.sample_texture4[sampler->unit] = sample_texture4_nearest; + } } @@ -323,6 +327,9 @@ cmd_state_texture(const struct cell_command_texture *texture) spu.texture[unit].width = width; spu.texture[unit].height = height; + spu.texture[unit].width4 = spu_splats((float) width); + spu.texture[unit].height4 = spu_splats((float) height); + spu.texture[unit].tiles_per_row = width / TILE_SIZE; spu.texture[unit].tex_size = (vector float) { width, height, 0.0, 0.0}; diff --git a/src/gallium/drivers/cell/spu/spu_funcs.c b/src/gallium/drivers/cell/spu/spu_funcs.c index 7dd7fcd253a..13c234ea2eb 100644 --- a/src/gallium/drivers/cell/spu/spu_funcs.c +++ b/src/gallium/drivers/cell/spu/spu_funcs.c @@ -106,6 +106,7 @@ spu_txp(vector float s, vector float t, vector float r, vector float q, { //const uint unit = 0; struct vec_4x4 colors; +#if 0 vector float coords[4]; coords[0] = s; @@ -121,6 +122,9 @@ spu_txp(vector float s, vector float t, vector float r, vector float q, colors.v[3] = spu.sample_texture[unit](unit, coords[3]); _transpose_matrix4x4(colors.v, colors.v); +#else + spu.sample_texture4[unit](s, t, r, q, unit, colors.v); +#endif return colors; } diff --git a/src/gallium/drivers/cell/spu/spu_main.h b/src/gallium/drivers/cell/spu/spu_main.h index 82c9c69a3a8..5d14be51c25 100644 --- a/src/gallium/drivers/cell/spu/spu_main.h +++ b/src/gallium/drivers/cell/spu/spu_main.h @@ -67,6 +67,14 @@ typedef union { typedef vector float (*spu_sample_texture_func)(uint unit, vector float texcoord); +typedef void (*spu_sample_texture4_func)(vector float s, + vector float t, + vector float r, + vector float q, + uint unit, + vector float colors[4]); + + /** Function for performing per-fragment ops */ typedef void (*spu_fragment_ops_func)(uint x, uint y, tile_t *colorTile, @@ -107,10 +115,12 @@ struct spu_texture void *start; ushort width, height; ushort tiles_per_row; - vector float tex_size; - vector unsigned int tex_size_mask; /**< == int(size - 1) */ - vector unsigned int tex_size_x_mask; /**< == int(size - 1) */ - vector unsigned int tex_size_y_mask; /**< == int(size - 1) */ + vector float tex_size; /**< == {width, height, 0, 0} */ + vector float width4; /**< == {width, width, width, width} */ + vector float height4; /**< == {height, height, height, height} */ + vector unsigned int tex_size_mask; /**< == {width-1, height-1, 0, 0 } */ + vector unsigned int tex_size_x_mask; /**< splat(width-1) */ + vector unsigned int tex_size_y_mask; /**< splat(height-1) */ } ALIGN16_ATTRIB; @@ -159,6 +169,7 @@ struct spu_global /** Current texture sampler function */ spu_sample_texture_func sample_texture[CELL_MAX_SAMPLERS]; + spu_sample_texture4_func sample_texture4[CELL_MAX_SAMPLERS]; /** Fragment program constants */ vector float constants[4 * CELL_MAX_CONSTANTS]; diff --git a/src/gallium/drivers/cell/spu/spu_texture.c b/src/gallium/drivers/cell/spu/spu_texture.c index 117b8a36f80..12e6ed1ba1e 100644 --- a/src/gallium/drivers/cell/spu/spu_texture.c +++ b/src/gallium/drivers/cell/spu/spu_texture.c @@ -26,6 +26,8 @@ **************************************************************************/ +#include + #include "pipe/p_compiler.h" #include "spu_main.h" #include "spu_texture.h" @@ -91,10 +93,10 @@ static void get_four_texels(uint unit, vec_uint4 x, vec_uint4 y, vec_uint4 *texels) { const unsigned texture_ea = (uintptr_t) spu.texture[unit].start; - vec_uint4 tile_x = spu_rlmask(x, -5); - vec_uint4 tile_y = spu_rlmask(y, -5); - const qword offset_x = si_andi((qword) x, 0x1f); - const qword offset_y = si_andi((qword) y, 0x1f); + vec_uint4 tile_x = spu_rlmask(x, -5); /* tile_x = x / 32 */ + vec_uint4 tile_y = spu_rlmask(y, -5); /* tile_y = y / 32 */ + const qword offset_x = si_andi((qword) x, 0x1f); /* offset_x = x & 0x1f */ + const qword offset_y = si_andi((qword) y, 0x1f); /* offset_y = y & 0x1f */ const qword tiles_per_row = (qword) spu_splats(spu.texture[unit].tiles_per_row); const qword tile_size = (qword) spu_splats((unsigned) sizeof(tile_t)); @@ -132,6 +134,31 @@ sample_texture_nearest(uint unit, vector float texcoord) } +/** + * \param colors returned colors in SOA format (rrrr, gggg, bbbb, aaaa). + */ +void +sample_texture4_nearest(vector float s, vector float t, + vector float r, vector float q, + uint unit, vector float colors[4]) +{ + vector float ss = spu_mul(s, spu.texture[unit].width4); + vector float tt = spu_mul(t, spu.texture[unit].height4); + vector unsigned int is = spu_convtu(ss, 0); + vector unsigned int it = spu_convtu(tt, 0); + vec_uint4 texels[4]; + + /* GL_REPEAT wrap mode: */ + is = spu_and(is, spu.texture[unit].tex_size_x_mask); + it = spu_and(it, spu.texture[unit].tex_size_y_mask); + + get_four_texels(unit, is, it, texels); + + /* convert four packed ARGBA pixels to float RRRR,GGGG,BBBB,AAAA */ + spu_unpack_A8R8G8B8_transpose4(texels, colors); +} + + vector float sample_texture_bilinear(uint unit, vector float texcoord) { @@ -198,3 +225,93 @@ sample_texture_bilinear(uint unit, vector float texcoord) return texel_sum; } + + +void +sample_texture4_bilinear(vector float s, vector float t, + vector float r, vector float q, + uint unit, vector float colors[4]) +{ + vector float ss = spu_madd(s, spu.texture[unit].width4, spu_splats(-0.5f)); + vector float tt = spu_madd(t, spu.texture[unit].height4, spu_splats(-0.5f)); + + vector unsigned int is0 = spu_convtu(ss, 0); + vector unsigned int it0 = spu_convtu(tt, 0); + + /* is + 1, it + 1 */ + vector unsigned int is1 = spu_add(is0, 1); + vector unsigned int it1 = spu_add(it0, 1); + + /* PIPE_TEX_WRAP_REPEAT */ + is0 = spu_and(is0, spu.texture[unit].tex_size_x_mask); + it0 = spu_and(it0, spu.texture[unit].tex_size_y_mask); + is1 = spu_and(is1, spu.texture[unit].tex_size_x_mask); + it1 = spu_and(it1, spu.texture[unit].tex_size_y_mask); + + /* get packed int texels */ + vector unsigned int texels[16]; + get_four_texels(unit, is0, it0, texels + 0); /* upper-left */ + get_four_texels(unit, is1, it0, texels + 4); /* upper-right */ + get_four_texels(unit, is0, it1, texels + 8); /* lower-left */ + get_four_texels(unit, 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. + */ + + /* convert packed int texels to float colors */ + vector float ftexels[16]; + spu_unpack_A8R8G8B8_transpose4(texels + 0, ftexels + 0); + spu_unpack_A8R8G8B8_transpose4(texels + 4, ftexels + 4); + spu_unpack_A8R8G8B8_transpose4(texels + 8, ftexels + 8); + spu_unpack_A8R8G8B8_transpose4(texels + 12, ftexels + 12); + + /* Compute weighting factors in [0,1] + * Multiply texcoord by 1024, AND with 1023, convert back to float. + */ + vector float ss1024 = spu_mul(ss, spu_splats(1024.0f)); + vector signed int iss1024 = spu_convts(ss1024, 0); + iss1024 = spu_and(iss1024, 1023); + vector float sWeights0 = spu_convtf(iss1024, 10); + + vector float tt1024 = spu_mul(tt, spu_splats(1024.0f)); + vector signed int itt1024 = spu_convts(tt1024, 0); + itt1024 = spu_and(itt1024, 1023); + vector float tWeights0 = spu_convtf(itt1024, 10); + + /* 1 - sWeight and 1 - tWeight */ + vector float sWeights1 = spu_sub(spu_splats(1.0f), sWeights0); + vector float tWeights1 = spu_sub(spu_splats(1.0f), tWeights0); + + /* reds, for four pixels */ + ftexels[ 0] = spu_mul(ftexels[ 0], spu_mul(sWeights1, tWeights1)); /*ul*/ + ftexels[ 4] = spu_mul(ftexels[ 4], spu_mul(sWeights0, tWeights1)); /*ur*/ + ftexels[ 8] = spu_mul(ftexels[ 8], spu_mul(sWeights1, tWeights0)); /*ll*/ + ftexels[12] = spu_mul(ftexels[12], spu_mul(sWeights0, tWeights0)); /*lr*/ + colors[0] = spu_add(spu_add(ftexels[0], ftexels[4]), + spu_add(ftexels[8], ftexels[12])); + + /* greens, for four pixels */ + ftexels[ 1] = spu_mul(ftexels[ 1], spu_mul(sWeights1, tWeights1)); /*ul*/ + ftexels[ 5] = spu_mul(ftexels[ 5], spu_mul(sWeights0, tWeights1)); /*ur*/ + ftexels[ 9] = spu_mul(ftexels[ 9], spu_mul(sWeights1, tWeights0)); /*ll*/ + ftexels[13] = spu_mul(ftexels[13], spu_mul(sWeights0, tWeights0)); /*lr*/ + colors[1] = spu_add(spu_add(ftexels[1], ftexels[5]), + spu_add(ftexels[9], ftexels[13])); + + /* blues, for four pixels */ + ftexels[ 2] = spu_mul(ftexels[ 2], spu_mul(sWeights1, tWeights1)); /*ul*/ + ftexels[ 6] = spu_mul(ftexels[ 6], spu_mul(sWeights0, tWeights1)); /*ur*/ + ftexels[10] = spu_mul(ftexels[10], spu_mul(sWeights1, tWeights0)); /*ll*/ + ftexels[14] = spu_mul(ftexels[14], spu_mul(sWeights0, tWeights0)); /*lr*/ + colors[2] = spu_add(spu_add(ftexels[2], ftexels[6]), + spu_add(ftexels[10], ftexels[14])); + + /* alphas, for four pixels */ + ftexels[ 3] = spu_mul(ftexels[ 3], spu_mul(sWeights1, tWeights1)); /*ul*/ + ftexels[ 7] = spu_mul(ftexels[ 7], spu_mul(sWeights0, tWeights1)); /*ur*/ + ftexels[11] = spu_mul(ftexels[11], spu_mul(sWeights1, tWeights0)); /*ll*/ + ftexels[15] = spu_mul(ftexels[15], spu_mul(sWeights0, tWeights0)); /*lr*/ + colors[3] = spu_add(spu_add(ftexels[3], ftexels[7]), + spu_add(ftexels[11], ftexels[15])); +} diff --git a/src/gallium/drivers/cell/spu/spu_texture.h b/src/gallium/drivers/cell/spu/spu_texture.h index f7c9738be88..f019e7d8eff 100644 --- a/src/gallium/drivers/cell/spu/spu_texture.h +++ b/src/gallium/drivers/cell/spu/spu_texture.h @@ -40,8 +40,20 @@ extern vector float sample_texture_nearest(uint unit, vector float texcoord); +extern void +sample_texture4_nearest(vector float s, vector float t, + vector float r, vector float q, + uint unit, vector float colors[4]); + + extern vector float sample_texture_bilinear(uint unit, vector float texcoord); +extern void +sample_texture4_bilinear(vector float s, vector float t, + vector float r, vector float q, + uint unit, vector float colors[4]); + + #endif /* SPU_TEXTURE_H */