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vc4: Add support for GL 1.0 logic ops.

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This commit is contained in:
Eric Anholt 2014-12-08 12:40:58 -08:00
parent 5045d8ca42
commit dfbf58c439
1 changed files with 60 additions and 2 deletions
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62
src/gallium/drivers/vc4/vc4_program.c
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@ -69,6 +69,7 @@ struct vc4_fs_key {
bool point_coord_upper_left;
bool light_twoside;
uint8_t alpha_test_func;
uint8_t logicop_func;
uint32_t point_sprite_mask;
struct pipe_rt_blend_state blend;
@ -1629,6 +1630,46 @@ alpha_test_discard(struct vc4_compile *c)
}
}
static struct qreg
vc4_logicop(struct vc4_compile *c, struct qreg src, struct qreg dst)
{
switch (c->fs_key->logicop_func) {
case PIPE_LOGICOP_CLEAR:
return qir_uniform_f(c, 0.0);
case PIPE_LOGICOP_NOR:
return qir_NOT(c, qir_OR(c, src, dst));
case PIPE_LOGICOP_AND_INVERTED:
return qir_AND(c, qir_NOT(c, src), dst);
case PIPE_LOGICOP_COPY_INVERTED:
return qir_NOT(c, src);
case PIPE_LOGICOP_AND_REVERSE:
return qir_AND(c, src, qir_NOT(c, dst));
case PIPE_LOGICOP_INVERT:
return qir_NOT(c, dst);
case PIPE_LOGICOP_XOR:
return qir_XOR(c, src, dst);
case PIPE_LOGICOP_NAND:
return qir_NOT(c, qir_AND(c, src, dst));
case PIPE_LOGICOP_AND:
return qir_AND(c, src, dst);
case PIPE_LOGICOP_EQUIV:
return qir_NOT(c, qir_XOR(c, src, dst));
case PIPE_LOGICOP_NOOP:
return dst;
case PIPE_LOGICOP_OR_INVERTED:
return qir_OR(c, qir_NOT(c, src), dst);
case PIPE_LOGICOP_OR_REVERSE:
return qir_OR(c, src, qir_NOT(c, dst));
case PIPE_LOGICOP_OR:
return qir_OR(c, src, dst);
case PIPE_LOGICOP_SET:
return qir_uniform_ui(c, ~0);
case PIPE_LOGICOP_COPY:
default:
return src;
}
}
static void
emit_frag_end(struct vc4_compile *c)
{
@ -1640,8 +1681,11 @@ emit_frag_end(struct vc4_compile *c)
struct qreg tlb_read_color[4] = { c->undef, c->undef, c->undef, c->undef };
struct qreg dst_color[4] = { c->undef, c->undef, c->undef, c->undef };
struct qreg linear_dst_color[4] = { c->undef, c->undef, c->undef, c->undef };
struct qreg packed_dst_color = c->undef;
if (c->fs_key->blend.blend_enable ||
c->fs_key->blend.colormask != 0xf) {
c->fs_key->blend.colormask != 0xf ||
c->fs_key->logicop_func != PIPE_LOGICOP_COPY) {
struct qreg r4 = qir_TLB_COLOR_READ(c);
for (int i = 0; i < 4; i++)
tlb_read_color[i] = qir_R4_UNPACK(c, r4, i);
@ -1656,6 +1700,11 @@ emit_frag_end(struct vc4_compile *c)
linear_dst_color[i] = dst_color[i];
}
}
/* Save the packed value for logic ops. Can't reuse r4
* becuase other things might smash it (like sRGB)
*/
packed_dst_color = qir_MOV(c, r4);
}
struct qreg blend_color[4];
@ -1748,6 +1797,11 @@ emit_frag_end(struct vc4_compile *c)
packed_color = qir_uniform_ui(c, 0);
}
if (c->fs_key->logicop_func != PIPE_LOGICOP_COPY) {
packed_color = vc4_logicop(c, packed_color, packed_dst_color);
}
qir_emit(c, qir_inst(QOP_TLB_COLOR_WRITE, c->undef,
packed_color, c->undef));
}
@ -2254,7 +2308,11 @@ vc4_update_compiled_fs(struct vc4_context *vc4, uint8_t prim_mode)
key->is_lines = (prim_mode >= PIPE_PRIM_LINES &&
prim_mode <= PIPE_PRIM_LINE_STRIP);
key->blend = vc4->blend->rt[0];
if (vc4->blend->logicop_enable) {
key->logicop_func = vc4->blend->logicop_func;
} else {
key->logicop_func = PIPE_LOGICOP_COPY;
}
if (vc4->framebuffer.cbufs[0])
key->color_format = vc4->framebuffer.cbufs[0]->format;