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 | 286 |
1 files changed, 221 insertions, 65 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 index 03dd547845..683664e8a4 100644 --- a/src/gallium/drivers/cell/spu/spu_per_fragment_op.c +++ b/src/gallium/drivers/cell/spu/spu_per_fragment_op.c @@ -40,6 +40,24 @@ #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, @@ -60,9 +78,12 @@ spu_fallback_fragment_ops(uint x, uint y, vector unsigned int mask) { vector float frag_aos[4]; - unsigned int c0, c1, c2, c3; + unsigned int fbc0, fbc1, fbc2, fbc3 ; /* framebuffer/tile colors */ + unsigned int fragc0, fragc1, fragc2, fragc3; /* fragment colors */ - /* do alpha test */ + /* + * Do alpha test + */ if (spu.depth_stencil_alpha.alpha.enabled) { vector float ref = spu_splats(spu.depth_stencil_alpha.alpha.ref); vector unsigned int amask; @@ -102,7 +123,10 @@ spu_fallback_fragment_ops(uint x, uint y, mask = spu_and(mask, amask); } - /* Z and/or stencil testing... */ + + /* + * Z and/or stencil testing... + */ if (spu.depth_stencil_alpha.depth.enabled || spu.depth_stencil_alpha.stencil[0].enabled) { @@ -178,6 +202,32 @@ spu_fallback_fragment_ops(uint x, uint y, } } + + /* + * 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; @@ -186,43 +236,30 @@ spu_fallback_fragment_ops(uint x, uint y, vector float fbRGBA[4]; /* current framebuffer colors */ - /* get colors from framebuffer/tile */ + /* convert framebuffer colors from packed int to vector float */ { - vector float fc[4]; - uint c0, c1, c2, c3; - -#if LINEAR_QUAD_LAYOUT /* See comments/diagram below */ - c0 = colorTile->ui[y][x*2+0]; - c1 = colorTile->ui[y][x*2+1]; - c2 = colorTile->ui[y][x*2+2]; - c3 = colorTile->ui[y][x*2+3]; -#else - c0 = colorTile->ui[y+0][x+0]; - c1 = colorTile->ui[y+0][x+1]; - c2 = colorTile->ui[y+1][x+0]; - c3 = colorTile->ui[y+1][x+1]; -#endif + vector float temp[4]; /* float colors in AOS form */ switch (spu.fb.color_format) { case PIPE_FORMAT_B8G8R8A8_UNORM: - fc[0] = spu_unpack_B8G8R8A8(c0); - fc[1] = spu_unpack_B8G8R8A8(c1); - fc[2] = spu_unpack_B8G8R8A8(c2); - fc[3] = spu_unpack_B8G8R8A8(c3); + 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: - fc[0] = spu_unpack_A8R8G8B8(c0); - fc[1] = spu_unpack_A8R8G8B8(c1); - fc[2] = spu_unpack_A8R8G8B8(c2); - fc[3] = spu_unpack_A8R8G8B8(c3); + 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, fc); + _transpose_matrix4x4(fbRGBA, temp); /* fbRGBA = transpose(temp) */ } /* - * Compute Src RGB terms + * Compute Src RGB terms (fragment color * factor) */ switch (spu.blend.rgb_src_factor) { case PIPE_BLENDFACTOR_ONE: @@ -245,13 +282,33 @@ spu_fallback_fragment_ops(uint x, uint y, 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 + * Compute Src Alpha term (fragment alpha * factor) */ switch (spu.blend.alpha_src_factor) { case PIPE_BLENDFACTOR_ONE: @@ -263,19 +320,29 @@ spu_fallback_fragment_ops(uint x, uint y, 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 + * Compute Dest RGB terms (framebuffer color * factor) */ switch (spu.blend.rgb_dst_factor) { case PIPE_BLENDFACTOR_ONE: - term2r = fragR; - term2g = fragG; - term2b = fragB; + term2r = fbRGBA[0]; + term2g = fbRGBA[1]; + term2b = fbRGBA[2]; break; case PIPE_BLENDFACTOR_ZERO: term2r = @@ -299,17 +366,37 @@ spu_fallback_fragment_ops(uint x, uint y, term2g = spu_mul(fbRGBA[1], tmp); term2b = spu_mul(fbRGBA[2], tmp); break; - /* XXX more cases */ + 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 + * Compute Dest Alpha term (framebuffer alpha * factor) */ switch (spu.blend.alpha_dst_factor) { case PIPE_BLENDFACTOR_ONE: - term2a = fragA; + term2a = fbRGBA[3]; break; case PIPE_BLENDFACTOR_SRC_COLOR: term2a = spu_splats(0.0f); @@ -322,6 +409,16 @@ spu_fallback_fragment_ops(uint x, uint y, 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); @@ -341,7 +438,21 @@ spu_fallback_fragment_ops(uint x, uint y, fragG = spu_sub(term1g, term2g); fragB = spu_sub(term1b, term2b); break; - /* XXX more cases */ + 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); } @@ -356,7 +467,15 @@ spu_fallback_fragment_ops(uint x, uint y, case PIPE_BLEND_SUBTRACT: fragA = spu_sub(term1a, term2a); break; - /* XXX more cases */ + 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); } @@ -384,21 +503,20 @@ spu_fallback_fragment_ops(uint x, uint y, #endif /* - * Pack float colors into 32-bit RGBA words. + * Pack fragment float colors into 32-bit RGBA words. */ switch (spu.fb.color_format) { case PIPE_FORMAT_A8R8G8B8_UNORM: - c0 = spu_pack_A8R8G8B8(frag_aos[0]); - c1 = spu_pack_A8R8G8B8(frag_aos[1]); - c2 = spu_pack_A8R8G8B8(frag_aos[2]); - c3 = spu_pack_A8R8G8B8(frag_aos[3]); + 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: - c0 = spu_pack_B8G8R8A8(frag_aos[0]); - c1 = spu_pack_B8G8R8A8(frag_aos[1]); - c2 = spu_pack_B8G8R8A8(frag_aos[2]); - c3 = spu_pack_B8G8R8A8(frag_aos[3]); + 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"); @@ -407,20 +525,57 @@ spu_fallback_fragment_ops(uint x, uint y, /* - * Color masking + * Do color masking */ if (spu.blend.colormask != 0xf) { - /* XXX to do */ - /* apply color mask to 32-bit packed colors */ + 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); } /* - * Logic Ops + * Do logic ops */ if (spu.blend.logicop_enable) { /* XXX to do */ - /* apply logicop to 32-bit packed colors */ + /* apply logicop to 32-bit packed colors (fragcx and fbcx) */ } @@ -431,45 +586,46 @@ spu_fallback_fragment_ops(uint x, uint y, spu.cur_ctile_status = TILE_STATUS_DIRTY; } else { + /* write no fragments */ return; } /* - * Write new quad colors to the framebuffer/tile. + * 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| + * |p0|p1|p2|p3|... * +--+--+--+--+ */ if (spu_extract(mask, 0)) - colorTile->ui[y][x*2] = c0; + colorTile->ui[y][x*2] = fragc0; if (spu_extract(mask, 1)) - colorTile->ui[y][x*2+1] = c1; + colorTile->ui[y][x*2+1] = fragc1; if (spu_extract(mask, 2)) - colorTile->ui[y][x*2+2] = c2; + colorTile->ui[y][x*2+2] = fragc2; if (spu_extract(mask, 3)) - colorTile->ui[y][x*2+3] = c3; + colorTile->ui[y][x*2+3] = fragc3; #else /* * Quad layout: * +--+--+ - * |p0|p1| + * |p0|p1|... * +--+--+ - * |p2|p3| + * |p2|p3|... * +--+--+ */ if (spu_extract(mask, 0)) - colorTile->ui[y+0][x+0] = c0; + colorTile->ui[y+0][x+0] = fragc0; if (spu_extract(mask, 1)) - colorTile->ui[y+0][x+1] = c1; + colorTile->ui[y+0][x+1] = fragc1; if (spu_extract(mask, 2)) - colorTile->ui[y+1][x+0] = c2; + colorTile->ui[y+1][x+0] = fragc2; if (spu_extract(mask, 3)) - colorTile->ui[y+1][x+1] = c3; + colorTile->ui[y+1][x+1] = fragc3; #endif } |