diff options
Diffstat (limited to 'src/gallium/drivers/cell/spu/spu_per_fragment_op.c')
-rw-r--r-- | src/gallium/drivers/cell/spu/spu_per_fragment_op.c | 631 |
1 files changed, 631 insertions, 0 deletions
diff --git a/src/gallium/drivers/cell/spu/spu_per_fragment_op.c b/src/gallium/drivers/cell/spu/spu_per_fragment_op.c new file mode 100644 index 0000000000..eba9f95cf1 --- /dev/null +++ b/src/gallium/drivers/cell/spu/spu_per_fragment_op.c @@ -0,0 +1,631 @@ +/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/** + * \author Brian Paul + */ + + +#include <transpose_matrix4x4.h> +#include "pipe/p_format.h" +#include "spu_main.h" +#include "spu_colorpack.h" +#include "spu_per_fragment_op.h" + + +#define LINEAR_QUAD_LAYOUT 1 + + +static INLINE vector float +spu_min(vector float a, vector float b) +{ + vector unsigned int m; + m = spu_cmpgt(a, b); /* m = a > b ? ~0 : 0 */ + return spu_sel(a, b, m); +} + + +static INLINE vector float +spu_max(vector float a, vector float b) +{ + vector unsigned int m; + m = spu_cmpgt(a, b); /* m = a > b ? ~0 : 0 */ + return spu_sel(b, a, m); +} + + +/** + * Called by rasterizer for each quad after the shader has run. Do + * all the per-fragment operations including alpha test, z test, + * stencil test, blend, colormask and logicops. This is a + * fallback/debug function. In reality we'll use a generated function + * produced by the PPU. But this function is useful for + * debug/validation. + */ +void +spu_fallback_fragment_ops(uint x, uint y, + tile_t *colorTile, + tile_t *depthStencilTile, + vector float fragZ, + vector float fragR, + vector float fragG, + vector float fragB, + vector float fragA, + vector unsigned int mask) +{ + vector float frag_aos[4]; + unsigned int fbc0, fbc1, fbc2, fbc3 ; /* framebuffer/tile colors */ + unsigned int fragc0, fragc1, fragc2, fragc3; /* fragment colors */ + + /* + * Do alpha test + */ + if (spu.depth_stencil_alpha.alpha.enabled) { + vector float ref = spu_splats(spu.depth_stencil_alpha.alpha.ref_value); + vector unsigned int amask; + + switch (spu.depth_stencil_alpha.alpha.func) { + case PIPE_FUNC_LESS: + amask = spu_cmpgt(ref, fragA); /* mask = (fragA < ref) */ + break; + case PIPE_FUNC_GREATER: + amask = spu_cmpgt(fragA, ref); /* mask = (fragA > ref) */ + break; + case PIPE_FUNC_GEQUAL: + amask = spu_cmpgt(ref, fragA); + amask = spu_nor(amask, amask); + break; + case PIPE_FUNC_LEQUAL: + amask = spu_cmpgt(fragA, ref); + amask = spu_nor(amask, amask); + break; + case PIPE_FUNC_EQUAL: + amask = spu_cmpeq(ref, fragA); + break; + case PIPE_FUNC_NOTEQUAL: + amask = spu_cmpeq(ref, fragA); + amask = spu_nor(amask, amask); + break; + case PIPE_FUNC_ALWAYS: + amask = spu_splats(0xffffffffU); + break; + case PIPE_FUNC_NEVER: + amask = spu_splats( 0x0U); + break; + default: + ; + } + + mask = spu_and(mask, amask); + } + + + /* + * Z and/or stencil testing... + */ + if (spu.depth_stencil_alpha.depth.enabled || + spu.depth_stencil_alpha.stencil[0].enabled) { + + /* get four Z/Stencil values from tile */ + vector unsigned int mask24 = spu_splats((unsigned int)0x00ffffffU); + vector unsigned int ifbZS = depthStencilTile->ui4[y/2][x/2]; + vector unsigned int ifbZ = spu_and(ifbZS, mask24); + vector unsigned int ifbS = spu_andc(ifbZS, mask24); + + if (spu.depth_stencil_alpha.stencil[0].enabled) { + /* do stencil test */ + ASSERT(spu.fb.depth_format == PIPE_FORMAT_S8Z24_UNORM); + + } + else if (spu.depth_stencil_alpha.depth.enabled) { + /* do depth test */ + + ASSERT(spu.fb.depth_format == PIPE_FORMAT_S8Z24_UNORM || + spu.fb.depth_format == PIPE_FORMAT_X8Z24_UNORM); + + vector unsigned int ifragZ; + vector unsigned int zmask; + + /* convert four fragZ from float to uint */ + fragZ = spu_mul(fragZ, spu_splats((float) 0xffffff)); + ifragZ = spu_convtu(fragZ, 0); + + /* do depth comparison, setting zmask with results */ + switch (spu.depth_stencil_alpha.depth.func) { + case PIPE_FUNC_LESS: + zmask = spu_cmpgt(ifbZ, ifragZ); /* mask = (ifragZ < ifbZ) */ + break; + case PIPE_FUNC_GREATER: + zmask = spu_cmpgt(ifragZ, ifbZ); /* mask = (ifbZ > ifragZ) */ + break; + case PIPE_FUNC_GEQUAL: + zmask = spu_cmpgt(ifbZ, ifragZ); + zmask = spu_nor(zmask, zmask); + break; + case PIPE_FUNC_LEQUAL: + zmask = spu_cmpgt(ifragZ, ifbZ); + zmask = spu_nor(zmask, zmask); + break; + case PIPE_FUNC_EQUAL: + zmask = spu_cmpeq(ifbZ, ifragZ); + break; + case PIPE_FUNC_NOTEQUAL: + zmask = spu_cmpeq(ifbZ, ifragZ); + zmask = spu_nor(zmask, zmask); + break; + case PIPE_FUNC_ALWAYS: + zmask = spu_splats(0xffffffffU); + break; + case PIPE_FUNC_NEVER: + zmask = spu_splats( 0x0U); + break; + default: + ; + } + + mask = spu_and(mask, zmask); + + /* merge framebuffer Z and fragment Z according to the mask */ + ifbZ = spu_or(spu_and(ifragZ, mask), + spu_andc(ifbZ, mask)); + } + + if (spu_extract(spu_orx(mask), 0)) { + /* put new fragment Z/Stencil values back into Z/Stencil tile */ + depthStencilTile->ui4[y/2][x/2] = spu_or(ifbZ, ifbS); + + spu.cur_ztile_status = TILE_STATUS_DIRTY; + } + } + + + /* + * If we'll need the current framebuffer/tile colors for blending + * or logicop or colormask, fetch them now. + */ + if (spu.blend.blend_enable || + spu.blend.logicop_enable || + spu.blend.colormask != 0xf) { + +#if LINEAR_QUAD_LAYOUT /* See comments/diagram below */ + fbc0 = colorTile->ui[y][x*2+0]; + fbc1 = colorTile->ui[y][x*2+1]; + fbc2 = colorTile->ui[y][x*2+2]; + fbc3 = colorTile->ui[y][x*2+3]; +#else + fbc0 = colorTile->ui[y+0][x+0]; + fbc1 = colorTile->ui[y+0][x+1]; + fbc2 = colorTile->ui[y+1][x+0]; + fbc3 = colorTile->ui[y+1][x+1]; +#endif + } + + + /* + * Do blending + */ + if (spu.blend.blend_enable) { + /* blending terms, misc regs */ + vector float term1r, term1g, term1b, term1a; + vector float term2r, term2g, term2b, term2a; + vector float one, tmp; + + vector float fbRGBA[4]; /* current framebuffer colors */ + + /* convert framebuffer colors from packed int to vector float */ + { + vector float temp[4]; /* float colors in AOS form */ + switch (spu.fb.color_format) { + case PIPE_FORMAT_B8G8R8A8_UNORM: + temp[0] = spu_unpack_B8G8R8A8(fbc0); + temp[1] = spu_unpack_B8G8R8A8(fbc1); + temp[2] = spu_unpack_B8G8R8A8(fbc2); + temp[3] = spu_unpack_B8G8R8A8(fbc3); + break; + case PIPE_FORMAT_A8R8G8B8_UNORM: + temp[0] = spu_unpack_A8R8G8B8(fbc0); + temp[1] = spu_unpack_A8R8G8B8(fbc1); + temp[2] = spu_unpack_A8R8G8B8(fbc2); + temp[3] = spu_unpack_A8R8G8B8(fbc3); + break; + default: + ASSERT(0); + } + _transpose_matrix4x4(fbRGBA, temp); /* fbRGBA = transpose(temp) */ + } + + /* + * Compute Src RGB terms (fragment color * factor) + */ + switch (spu.blend.rgb_src_factor) { + case PIPE_BLENDFACTOR_ONE: + term1r = fragR; + term1g = fragG; + term1b = fragB; + break; + case PIPE_BLENDFACTOR_ZERO: + term1r = + term1g = + term1b = spu_splats(0.0f); + break; + case PIPE_BLENDFACTOR_SRC_COLOR: + term1r = spu_mul(fragR, fragR); + term1g = spu_mul(fragG, fragG); + term1b = spu_mul(fragB, fragB); + break; + case PIPE_BLENDFACTOR_SRC_ALPHA: + term1r = spu_mul(fragR, fragA); + term1g = spu_mul(fragG, fragA); + term1b = spu_mul(fragB, fragA); + break; + case PIPE_BLENDFACTOR_DST_COLOR: + term1r = spu_mul(fragR, fbRGBA[0]); + term1g = spu_mul(fragG, fbRGBA[1]); + term1b = spu_mul(fragB, fbRGBA[1]); + break; + case PIPE_BLENDFACTOR_DST_ALPHA: + term1r = spu_mul(fragR, fbRGBA[3]); + term1g = spu_mul(fragG, fbRGBA[3]); + term1b = spu_mul(fragB, fbRGBA[3]); + break; + case PIPE_BLENDFACTOR_CONST_COLOR: + term1r = spu_mul(fragR, spu_splats(spu.blend_color.color[0])); + term1g = spu_mul(fragG, spu_splats(spu.blend_color.color[1])); + term1b = spu_mul(fragB, spu_splats(spu.blend_color.color[2])); + break; + case PIPE_BLENDFACTOR_CONST_ALPHA: + term1r = spu_mul(fragR, spu_splats(spu.blend_color.color[3])); + term1g = spu_mul(fragG, spu_splats(spu.blend_color.color[3])); + term1b = spu_mul(fragB, spu_splats(spu.blend_color.color[3])); + break; + /* XXX more cases */ + default: + ASSERT(0); + } + + /* + * Compute Src Alpha term (fragment alpha * factor) + */ + switch (spu.blend.alpha_src_factor) { + case PIPE_BLENDFACTOR_ONE: + term1a = fragA; + break; + case PIPE_BLENDFACTOR_SRC_COLOR: + term1a = spu_splats(0.0f); + break; + case PIPE_BLENDFACTOR_SRC_ALPHA: + term1a = spu_mul(fragA, fragA); + break; + case PIPE_BLENDFACTOR_DST_COLOR: + /* fall-through */ + case PIPE_BLENDFACTOR_DST_ALPHA: + term1a = spu_mul(fragA, fbRGBA[3]); + break; + case PIPE_BLENDFACTOR_CONST_COLOR: + /* fall-through */ + case PIPE_BLENDFACTOR_CONST_ALPHA: + term1a = spu_mul(fragR, spu_splats(spu.blend_color.color[3])); + break; + /* XXX more cases */ + default: + ASSERT(0); + } + + /* + * Compute Dest RGB terms (framebuffer color * factor) + */ + switch (spu.blend.rgb_dst_factor) { + case PIPE_BLENDFACTOR_ONE: + term2r = fbRGBA[0]; + term2g = fbRGBA[1]; + term2b = fbRGBA[2]; + break; + case PIPE_BLENDFACTOR_ZERO: + term2r = + term2g = + term2b = spu_splats(0.0f); + break; + case PIPE_BLENDFACTOR_SRC_COLOR: + term2r = spu_mul(fbRGBA[0], fragR); + term2g = spu_mul(fbRGBA[1], fragG); + term2b = spu_mul(fbRGBA[2], fragB); + break; + case PIPE_BLENDFACTOR_SRC_ALPHA: + term2r = spu_mul(fbRGBA[0], fragA); + term2g = spu_mul(fbRGBA[1], fragA); + term2b = spu_mul(fbRGBA[2], fragA); + break; + case PIPE_BLENDFACTOR_INV_SRC_ALPHA: + one = spu_splats(1.0f); + tmp = spu_sub(one, fragA); + term2r = spu_mul(fbRGBA[0], tmp); + term2g = spu_mul(fbRGBA[1], tmp); + term2b = spu_mul(fbRGBA[2], tmp); + break; + case PIPE_BLENDFACTOR_DST_COLOR: + term2r = spu_mul(fbRGBA[0], fbRGBA[0]); + term2g = spu_mul(fbRGBA[1], fbRGBA[1]); + term2b = spu_mul(fbRGBA[2], fbRGBA[2]); + break; + case PIPE_BLENDFACTOR_DST_ALPHA: + term2r = spu_mul(fbRGBA[0], fbRGBA[3]); + term2g = spu_mul(fbRGBA[1], fbRGBA[3]); + term2b = spu_mul(fbRGBA[2], fbRGBA[3]); + break; + case PIPE_BLENDFACTOR_CONST_COLOR: + term2r = spu_mul(fbRGBA[0], spu_splats(spu.blend_color.color[0])); + term2g = spu_mul(fbRGBA[1], spu_splats(spu.blend_color.color[1])); + term2b = spu_mul(fbRGBA[2], spu_splats(spu.blend_color.color[2])); + break; + case PIPE_BLENDFACTOR_CONST_ALPHA: + term2r = spu_mul(fbRGBA[0], spu_splats(spu.blend_color.color[3])); + term2g = spu_mul(fbRGBA[1], spu_splats(spu.blend_color.color[3])); + term2b = spu_mul(fbRGBA[2], spu_splats(spu.blend_color.color[3])); + break; + /* XXX more cases */ + default: + ASSERT(0); + } + + /* + * Compute Dest Alpha term (framebuffer alpha * factor) + */ + switch (spu.blend.alpha_dst_factor) { + case PIPE_BLENDFACTOR_ONE: + term2a = fbRGBA[3]; + break; + case PIPE_BLENDFACTOR_SRC_COLOR: + term2a = spu_splats(0.0f); + break; + case PIPE_BLENDFACTOR_SRC_ALPHA: + term2a = spu_mul(fbRGBA[3], fragA); + break; + case PIPE_BLENDFACTOR_INV_SRC_ALPHA: + one = spu_splats(1.0f); + tmp = spu_sub(one, fragA); + term2a = spu_mul(fbRGBA[3], tmp); + break; + case PIPE_BLENDFACTOR_DST_COLOR: + /* fall-through */ + case PIPE_BLENDFACTOR_DST_ALPHA: + term2a = spu_mul(fbRGBA[3], fbRGBA[3]); + break; + case PIPE_BLENDFACTOR_CONST_COLOR: + /* fall-through */ + case PIPE_BLENDFACTOR_CONST_ALPHA: + term2a = spu_mul(fbRGBA[3], spu_splats(spu.blend_color.color[3])); + break; + /* XXX more cases */ + default: + ASSERT(0); + } + + /* + * Combine Src/Dest RGB terms + */ + switch (spu.blend.rgb_func) { + case PIPE_BLEND_ADD: + fragR = spu_add(term1r, term2r); + fragG = spu_add(term1g, term2g); + fragB = spu_add(term1b, term2b); + break; + case PIPE_BLEND_SUBTRACT: + fragR = spu_sub(term1r, term2r); + fragG = spu_sub(term1g, term2g); + fragB = spu_sub(term1b, term2b); + break; + case PIPE_BLEND_REVERSE_SUBTRACT: + fragR = spu_sub(term2r, term1r); + fragG = spu_sub(term2g, term1g); + fragB = spu_sub(term2b, term1b); + break; + case PIPE_BLEND_MIN: + fragR = spu_min(term1r, term2r); + fragG = spu_min(term1g, term2g); + fragB = spu_min(term1b, term2b); + break; + case PIPE_BLEND_MAX: + fragR = spu_max(term1r, term2r); + fragG = spu_max(term1g, term2g); + fragB = spu_max(term1b, term2b); + break; + default: + ASSERT(0); + } + + /* + * Combine Src/Dest A term + */ + switch (spu.blend.alpha_func) { + case PIPE_BLEND_ADD: + fragA = spu_add(term1a, term2a); + break; + case PIPE_BLEND_SUBTRACT: + fragA = spu_sub(term1a, term2a); + break; + case PIPE_BLEND_REVERSE_SUBTRACT: + fragA = spu_sub(term2a, term1a); + break; + case PIPE_BLEND_MIN: + fragA = spu_min(term1a, term2a); + break; + case PIPE_BLEND_MAX: + fragA = spu_max(term1a, term2a); + break; + default: + ASSERT(0); + } + } + + + /* + * Convert RRRR,GGGG,BBBB,AAAA to RGBA,RGBA,RGBA,RGBA. + */ +#if 0 + /* original code */ + { + vector float frag_soa[4]; + frag_soa[0] = fragR; + frag_soa[1] = fragG; + frag_soa[2] = fragB; + frag_soa[3] = fragA; + _transpose_matrix4x4(frag_aos, frag_soa); + } +#else + /* short-cut relying on function parameter layout: */ + _transpose_matrix4x4(frag_aos, &fragR); + (void) fragG; + (void) fragB; +#endif + + /* + * Pack fragment float colors into 32-bit RGBA words. + */ + switch (spu.fb.color_format) { + case PIPE_FORMAT_A8R8G8B8_UNORM: + fragc0 = spu_pack_A8R8G8B8(frag_aos[0]); + fragc1 = spu_pack_A8R8G8B8(frag_aos[1]); + fragc2 = spu_pack_A8R8G8B8(frag_aos[2]); + fragc3 = spu_pack_A8R8G8B8(frag_aos[3]); + break; + case PIPE_FORMAT_B8G8R8A8_UNORM: + fragc0 = spu_pack_B8G8R8A8(frag_aos[0]); + fragc1 = spu_pack_B8G8R8A8(frag_aos[1]); + fragc2 = spu_pack_B8G8R8A8(frag_aos[2]); + fragc3 = spu_pack_B8G8R8A8(frag_aos[3]); + break; + default: + fprintf(stderr, "SPU: Bad pixel format in spu_default_fragment_ops\n"); + ASSERT(0); + } + + + /* + * Do color masking + */ + if (spu.blend.colormask != 0xf) { + uint cmask = 0x0; /* each byte corresponds to a color channel */ + + /* Form bitmask depending on color buffer format and colormask bits */ + switch (spu.fb.color_format) { + case PIPE_FORMAT_A8R8G8B8_UNORM: + if (spu.blend.colormask & PIPE_MASK_R) + cmask |= 0x00ff0000; /* red */ + if (spu.blend.colormask & PIPE_MASK_G) + cmask |= 0x0000ff00; /* green */ + if (spu.blend.colormask & PIPE_MASK_B) + cmask |= 0x000000ff; /* blue */ + if (spu.blend.colormask & PIPE_MASK_A) + cmask |= 0xff000000; /* alpha */ + break; + case PIPE_FORMAT_B8G8R8A8_UNORM: + if (spu.blend.colormask & PIPE_MASK_R) + cmask |= 0x0000ff00; /* red */ + if (spu.blend.colormask & PIPE_MASK_G) + cmask |= 0x00ff0000; /* green */ + if (spu.blend.colormask & PIPE_MASK_B) + cmask |= 0xff000000; /* blue */ + if (spu.blend.colormask & PIPE_MASK_A) + cmask |= 0x000000ff; /* alpha */ + break; + default: + ASSERT(0); + } + + /* + * Apply color mask to the 32-bit packed colors. + * if (cmask[i]) + * frag color[i] = frag color[i]; + * else + * frag color[i] = framebuffer color[i]; + */ + fragc0 = (fragc0 & cmask) | (fbc0 & ~cmask); + fragc1 = (fragc1 & cmask) | (fbc1 & ~cmask); + fragc2 = (fragc2 & cmask) | (fbc2 & ~cmask); + fragc3 = (fragc3 & cmask) | (fbc3 & ~cmask); + } + + + /* + * Do logic ops + */ + if (spu.blend.logicop_enable) { + /* XXX to do */ + /* apply logicop to 32-bit packed colors (fragcx and fbcx) */ + } + + + /* + * If mask is non-zero, mark tile as dirty. + */ + if (spu_extract(spu_orx(mask), 0)) { + spu.cur_ctile_status = TILE_STATUS_DIRTY; + } + else { + /* write no fragments */ + return; + } + + + /* + * Write new fragment/quad colors to the framebuffer/tile. + * Only write pixels where the corresponding mask word is set. + */ +#if LINEAR_QUAD_LAYOUT + /* + * Quad layout: + * +--+--+--+--+ + * |p0|p1|p2|p3|... + * +--+--+--+--+ + */ + if (spu_extract(mask, 0)) + colorTile->ui[y][x*2] = fragc0; + if (spu_extract(mask, 1)) + colorTile->ui[y][x*2+1] = fragc1; + if (spu_extract(mask, 2)) + colorTile->ui[y][x*2+2] = fragc2; + if (spu_extract(mask, 3)) + colorTile->ui[y][x*2+3] = fragc3; +#else + /* + * Quad layout: + * +--+--+ + * |p0|p1|... + * +--+--+ + * |p2|p3|... + * +--+--+ + */ + if (spu_extract(mask, 0)) + colorTile->ui[y+0][x+0] = fragc0; + if (spu_extract(mask, 1)) + colorTile->ui[y+0][x+1] = fragc1; + if (spu_extract(mask, 2)) + colorTile->ui[y+1][x+0] = fragc2; + if (spu_extract(mask, 3)) + colorTile->ui[y+1][x+1] = fragc3; +#endif +} |