diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_wm_emit.c')
-rw-r--r-- | src/mesa/drivers/dri/i965/brw_wm_emit.c | 146 |
1 files changed, 93 insertions, 53 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm_emit.c b/src/mesa/drivers/dri/i965/brw_wm_emit.c index 9315bca315..05e464d4b6 100644 --- a/src/mesa/drivers/dri/i965/brw_wm_emit.c +++ b/src/mesa/drivers/dri/i965/brw_wm_emit.c @@ -34,6 +34,23 @@ #include "brw_context.h" #include "brw_wm.h" +static GLboolean can_do_pln(struct intel_context *intel, + const struct brw_reg *deltas) +{ + struct brw_context *brw = brw_context(&intel->ctx); + + if (!brw->has_pln) + return GL_FALSE; + + if (deltas[1].nr != deltas[0].nr + 1) + return GL_FALSE; + + if (intel->gen < 6 && ((deltas[0].nr & 1) != 0)) + return GL_FALSE; + + return GL_TRUE; +} + /* Not quite sure how correct this is - need to understand horiz * vs. vertical strides a little better. */ @@ -45,7 +62,13 @@ static INLINE struct brw_reg sechalf( struct brw_reg reg ) } -/* Payload R0: +/** + * Computes the screen-space x,y position of the pixels. + * + * This will be used by emit_delta_xy() or emit_wpos_xy() for + * interpolation of attributes.. + * + * Payload R0: * * R0.0 -- pixel mask, one bit for each of 4 pixels in 4 tiles, * corresponding to each of the 16 execution channels. @@ -60,7 +83,6 @@ static INLINE struct brw_reg sechalf( struct brw_reg reg ) * R1.7 -- ? * R1.8 -- ? */ - void emit_pixel_xy(struct brw_wm_compile *c, const struct brw_reg *dst, GLuint mask) @@ -100,7 +122,14 @@ void emit_pixel_xy(struct brw_wm_compile *c, brw_pop_insn_state(p); } - +/** + * Computes the screen-space x,y distance of the pixels from the start + * vertex. + * + * This will be used in linterp or pinterp with the start vertex value + * and the Cx, Cy, and C0 coefficients passed in from the setup engine + * to produce interpolated attribute values. + */ void emit_delta_xy(struct brw_compile *p, const struct brw_reg *dst, GLuint mask, @@ -108,25 +137,27 @@ void emit_delta_xy(struct brw_compile *p, { struct brw_reg r1 = brw_vec1_grf(1, 0); - /* Calc delta X,Y by subtracting origin in r1 from the pixel - * centers. - */ - if (mask & WRITEMASK_X) { - brw_ADD(p, - dst[0], - retype(arg0[0], BRW_REGISTER_TYPE_UW), - negate(r1)); - } + if (mask == 0) + return; - if (mask & WRITEMASK_Y) { - brw_ADD(p, - dst[1], - retype(arg0[1], BRW_REGISTER_TYPE_UW), - negate(suboffset(r1,1))); + assert(mask == WRITEMASK_XY); - } + /* Calc delta X,Y by subtracting origin in r1 from the pixel + * centers produced by emit_pixel_xy(). + */ + brw_ADD(p, + dst[0], + retype(arg0[0], BRW_REGISTER_TYPE_UW), + negate(r1)); + brw_ADD(p, + dst[1], + retype(arg0[1], BRW_REGISTER_TYPE_UW), + negate(suboffset(r1,1))); } +/** + * Computes the pixel offset from the window origin for gl_FragCoord(). + */ void emit_wpos_xy(struct brw_wm_compile *c, const struct brw_reg *dst, GLuint mask, @@ -134,9 +165,6 @@ void emit_wpos_xy(struct brw_wm_compile *c, { struct brw_compile *p = &c->func; - /* Calculate the pixel offset from window bottom left into destination - * X and Y channels. - */ if (mask & WRITEMASK_X) { if (c->fp->program.PixelCenterInteger) { /* X' = X */ @@ -186,6 +214,7 @@ void emit_pixel_w(struct brw_wm_compile *c, const struct brw_reg *deltas) { struct brw_compile *p = &c->func; + struct intel_context *intel = &p->brw->intel; /* Don't need this if all you are doing is interpolating color, for * instance. @@ -196,8 +225,12 @@ void emit_pixel_w(struct brw_wm_compile *c, /* Calc 1/w - just linterp wpos[3] optimized by putting the * result straight into a message reg. */ - brw_LINE(p, brw_null_reg(), interp3, deltas[0]); - brw_MAC(p, brw_message_reg(2), suboffset(interp3, 1), deltas[1]); + if (can_do_pln(intel, deltas)) { + brw_PLN(p, brw_message_reg(2), interp3, deltas[0]); + } else { + brw_LINE(p, brw_null_reg(), interp3, deltas[0]); + brw_MAC(p, brw_message_reg(2), suboffset(interp3, 1), deltas[1]); + } /* Calc w */ if (c->dispatch_width == 16) { @@ -224,6 +257,7 @@ void emit_linterp(struct brw_compile *p, const struct brw_reg *arg0, const struct brw_reg *deltas) { + struct intel_context *intel = &p->brw->intel; struct brw_reg interp[4]; GLuint nr = arg0[0].nr; GLuint i; @@ -235,8 +269,12 @@ void emit_linterp(struct brw_compile *p, for (i = 0; i < 4; i++) { if (mask & (1<<i)) { - brw_LINE(p, brw_null_reg(), interp[i], deltas[0]); - brw_MAC(p, dst[i], suboffset(interp[i],1), deltas[1]); + if (can_do_pln(intel, deltas)) { + brw_PLN(p, dst[i], interp[i], deltas[0]); + } else { + brw_LINE(p, brw_null_reg(), interp[i], deltas[0]); + brw_MAC(p, dst[i], suboffset(interp[i],1), deltas[1]); + } } } } @@ -249,6 +287,7 @@ void emit_pinterp(struct brw_compile *p, const struct brw_reg *deltas, const struct brw_reg *w) { + struct intel_context *intel = &p->brw->intel; struct brw_reg interp[4]; GLuint nr = arg0[0].nr; GLuint i; @@ -260,8 +299,12 @@ void emit_pinterp(struct brw_compile *p, for (i = 0; i < 4; i++) { if (mask & (1<<i)) { - brw_LINE(p, brw_null_reg(), interp[i], deltas[0]); - brw_MAC(p, dst[i], suboffset(interp[i],1), deltas[1]); + if (can_do_pln(intel, deltas)) { + brw_PLN(p, dst[i], interp[i], deltas[0]); + } else { + brw_LINE(p, brw_null_reg(), interp[i], deltas[0]); + brw_MAC(p, dst[i], suboffset(interp[i],1), deltas[1]); + } } } for (i = 0; i < 4; i++) { @@ -502,11 +545,8 @@ void emit_sop(struct brw_compile *p, for (i = 0; i < 4; i++) { if (mask & (1<<i)) { brw_push_insn_state(p); - brw_CMP(p, brw_null_reg(), cond, arg0[i], arg1[i]); - brw_set_predicate_control(p, BRW_PREDICATE_NONE); - brw_MOV(p, dst[i], brw_imm_f(0)); - brw_set_predicate_control(p, BRW_PREDICATE_NORMAL); - brw_MOV(p, dst[i], brw_imm_f(1.0)); + brw_CMP(p, brw_null_reg(), cond, arg1[i], arg0[i]); + brw_SEL(p, dst[i], brw_null_reg(), brw_imm_f(1.0)); brw_pop_insn_state(p); } } @@ -566,12 +606,12 @@ static void emit_sne( struct brw_compile *p, emit_sop(p, dst, mask, BRW_CONDITIONAL_NEQ, arg0, arg1); } -static void emit_cmp( struct brw_compile *p, - const struct brw_reg *dst, - GLuint mask, - const struct brw_reg *arg0, - const struct brw_reg *arg1, - const struct brw_reg *arg2 ) +void emit_cmp(struct brw_compile *p, + const struct brw_reg *dst, + GLuint mask, + const struct brw_reg *arg0, + const struct brw_reg *arg1, + const struct brw_reg *arg2) { GLuint i; @@ -601,14 +641,10 @@ void emit_max(struct brw_compile *p, for (i = 0; i < 4; i++) { if (mask & (1<<i)) { - brw_set_saturate(p, (mask & SATURATE) ? 1 : 0); - brw_MOV(p, dst[i], arg0[i]); - brw_set_saturate(p, 0); - - brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_L, arg0[i], arg1[i]); + brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_GE, arg0[i], arg1[i]); brw_set_saturate(p, (mask & SATURATE) ? 1 : 0); - brw_MOV(p, dst[i], arg1[i]); + brw_SEL(p, dst[i], arg0[i], arg1[i]); brw_set_saturate(p, 0); brw_set_predicate_control_flag_value(p, 0xff); } @@ -625,14 +661,10 @@ void emit_min(struct brw_compile *p, for (i = 0; i < 4; i++) { if (mask & (1<<i)) { - brw_set_saturate(p, (mask & SATURATE) ? 1 : 0); - brw_MOV(p, dst[i], arg1[i]); - brw_set_saturate(p, 0); - brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_L, arg0[i], arg1[i]); brw_set_saturate(p, (mask & SATURATE) ? 1 : 0); - brw_MOV(p, dst[i], arg0[i]); + brw_SEL(p, dst[i], arg0[i], arg1[i]); brw_set_saturate(p, 0); brw_set_predicate_control_flag_value(p, 0xff); } @@ -1086,11 +1118,19 @@ static void emit_kil( struct brw_wm_compile *c, { struct brw_compile *p = &c->func; struct brw_reg r0uw = retype(brw_vec1_grf(0, 0), BRW_REGISTER_TYPE_UW); - GLuint i; - - /* XXX - usually won't need 4 compares! - */ + GLuint i, j; + for (i = 0; i < 4; i++) { + /* Check if we've already done the comparison for this reg + * -- common when someone does KIL TEMP.wwww. + */ + for (j = 0; j < i; j++) { + if (memcmp(&arg0[j], &arg0[i], sizeof(arg0[0])) == 0) + break; + } + if (j != i) + continue; + brw_push_insn_state(p); brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_GE, arg0[i], brw_imm_f(0)); brw_set_predicate_control_flag_value(p, 0xff); |