diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vs_emit.c | 72 |
1 files changed, 48 insertions, 24 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c index 4e3338293b..e0be3cc6e3 100644 --- a/src/mesa/drivers/dri/i965/brw_vs_emit.c +++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c @@ -180,10 +180,12 @@ static void brw_vs_alloc_regs( struct brw_vs_compile *c ) c->first_output = reg; c->first_overflow_output = 0; - if (intel->is_ironlake) - mrf = 8; + if (intel->gen >= 6) + mrf = 6; + else if (intel->is_ironlake) + mrf = 8; else - mrf = 4; + mrf = 4; for (i = 0; i < VERT_RESULT_MAX; i++) { if (c->prog_data.outputs_written & BITFIELD64_BIT(i)) { @@ -1195,7 +1197,7 @@ static void emit_vertex_write( struct brw_vs_compile *c) struct brw_reg pos = c->regs[PROGRAM_OUTPUT][VERT_RESULT_HPOS]; struct brw_reg ndc; int eot; - GLuint len_vertext_header = 2; + GLuint len_vertex_header = 2; if (c->key.copy_edgeflag) { brw_MOV(p, @@ -1203,12 +1205,14 @@ static void emit_vertex_write( struct brw_vs_compile *c) get_reg(c, PROGRAM_INPUT, VERT_ATTRIB_EDGEFLAG)); } - /* Build ndc coords */ - ndc = get_tmp(c); - /* ndc = 1.0 / pos.w */ - emit_math1(c, BRW_MATH_FUNCTION_INV, ndc, brw_swizzle1(pos, 3), BRW_MATH_PRECISION_FULL); - /* ndc.xyz = pos * ndc */ - brw_MUL(p, brw_writemask(ndc, WRITEMASK_XYZ), pos, ndc); + if (intel->gen < 6) { + /* Build ndc coords */ + ndc = get_tmp(c); + /* ndc = 1.0 / pos.w */ + emit_math1(c, BRW_MATH_FUNCTION_INV, ndc, brw_swizzle1(pos, 3), BRW_MATH_PRECISION_FULL); + /* ndc.xyz = pos * ndc */ + brw_MUL(p, brw_writemask(ndc, WRITEMASK_XYZ), pos, ndc); + } /* Update the header for point size, user clipping flags, and -ve rhw * workaround. @@ -1271,21 +1275,41 @@ static void emit_vertex_write( struct brw_vs_compile *c) * of zeros followed by two sets of NDC coordinates: */ brw_set_access_mode(p, BRW_ALIGN_1); - brw_MOV(p, offset(m0, 2), ndc); - if (intel->is_ironlake || intel->gen >= 6) { - /* There are 20 DWs (D0-D19) in VUE vertex header on Ironlake */ - brw_MOV(p, offset(m0, 3), pos); /* a portion of vertex header */ - /* m4, m5 contain the distances from vertex to the user clip planeXXX. - * Seems it is useless for us. - * m6 is used for aligning, so that the remainder of vertex element is - * reg-aligned. - */ - brw_MOV(p, offset(m0, 7), pos); /* the remainder of vertex element */ - len_vertext_header = 6; + if (intel->gen >= 6) { + /* There are 16 DWs (D0-D15) in VUE header on Sandybridge: + * dword 0-3 (m1) of the header is indices, point width, clip flags. + * dword 4-7 (m2) is the 4D space position + * dword 8-15 (m3,m4) of the vertex header is the user clip distance. + * m5 is the first vertex data we fill, which is the vertex position. + */ + brw_MOV(p, offset(m0, 2), pos); + brw_MOV(p, offset(m0, 5), pos); + len_vertex_header = 4; + } else if (intel->is_ironlake) { + /* There are 20 DWs (D0-D19) in VUE header on Ironlake: + * dword 0-3 (m1) of the header is indices, point width, clip flags. + * dword 4-7 (m2) is the ndc position (set above) + * dword 8-11 (m3) of the vertex header is the 4D space position + * dword 12-19 (m4,m5) of the vertex header is the user clip distance. + * m6 is a pad so that the vertex element data is aligned + * m7 is the first vertex data we fill, which is the vertex position. + */ + brw_MOV(p, offset(m0, 2), ndc); + brw_MOV(p, offset(m0, 3), pos); + brw_MOV(p, offset(m0, 7), pos); + len_vertex_header = 6; } else { - brw_MOV(p, offset(m0, 3), pos); - len_vertext_header = 2; + /* There are 8 dwords in VUE header pre-Ironlake: + * dword 0-3 (m1) is indices, point width, clip flags. + * dword 4-7 (m2) is ndc position (set above) + * + * dword 8-11 (m3) is the first vertex data, which we always have be the + * vertex position. + */ + brw_MOV(p, offset(m0, 2), ndc); + brw_MOV(p, offset(m0, 3), pos); + len_vertex_header = 2; } eot = (c->first_overflow_output == 0); @@ -1296,7 +1320,7 @@ static void emit_vertex_write( struct brw_vs_compile *c) c->r0, /* src */ 0, /* allocate */ 1, /* used */ - MIN2(c->nr_outputs + 1 + len_vertext_header, (BRW_MAX_MRF-1)), /* msg len */ + MIN2(c->nr_outputs + 1 + len_vertex_header, (BRW_MAX_MRF-1)), /* msg len */ 0, /* response len */ eot, /* eot */ eot, /* writes complete */ |