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Diffstat (limited to 'src/mesa/drivers/dri/r300/r300_fragprog.c')
-rw-r--r--src/mesa/drivers/dri/r300/r300_fragprog.c102
1 files changed, 86 insertions, 16 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_fragprog.c b/src/mesa/drivers/dri/r300/r300_fragprog.c
index 2d947dea3a..91ec4f855c 100644
--- a/src/mesa/drivers/dri/r300/r300_fragprog.c
+++ b/src/mesa/drivers/dri/r300/r300_fragprog.c
@@ -82,7 +82,8 @@ static const struct {
{ "LG2", 1, R300_FPI0_OUTC_REPL_ALPHA, R300_FPI2_OUTA_LG2 },
{ "RCP", 1, R300_FPI0_OUTC_REPL_ALPHA, R300_FPI2_OUTA_RCP },
{ "RSQ", 1, R300_FPI0_OUTC_REPL_ALPHA, R300_FPI2_OUTA_RSQ },
- { "REPL_ALPHA", 1, R300_FPI0_OUTC_REPL_ALPHA, PFS_INVAL }
+ { "REPL_ALPHA", 1, R300_FPI0_OUTC_REPL_ALPHA, PFS_INVAL },
+ { "CMPH", 3, R300_FPI0_OUTC_CMPH, PFS_INVAL },
};
#define MAKE_SWZ3(x, y, z) (MAKE_SWIZZLE4(SWIZZLE_##x, \
@@ -180,7 +181,7 @@ static const pfs_reg_t undef = {
valid: GL_FALSE
};
-/* constant zero source */
+/* constant one source */
static const pfs_reg_t pfs_one = {
type: REG_TYPE_CONST,
index: 0,
@@ -189,7 +190,16 @@ static const pfs_reg_t pfs_one = {
valid: GL_TRUE
};
-/* constant one source */
+/* constant half source */
+static const pfs_reg_t pfs_half = {
+ type: REG_TYPE_CONST,
+ index: 0,
+ v_swz: SWIZZLE_HHH,
+ s_swz: SWIZZLE_HALF,
+ valid: GL_TRUE
+};
+
+/* constant zero source */
static const pfs_reg_t pfs_zero = {
type: REG_TYPE_CONST,
index: 0,
@@ -319,7 +329,6 @@ static pfs_reg_t emit_param4fv(struct r300_fragment_program *rp,
return r;
}
-#if 0
static pfs_reg_t emit_const4fv(struct r300_fragment_program *rp, GLfloat *cp)
{
pfs_reg_t r = undef;
@@ -330,13 +339,11 @@ static pfs_reg_t emit_const4fv(struct r300_fragment_program *rp, GLfloat *cp)
ERROR("Out of hw constants!\n");
return r;
}
-
- COPY_4V(rp->constant[r.index], cp);
+ COPY_4V(rp->constant[r.index], cp);
r.valid = GL_TRUE;
return r;
}
-#endif
static __inline pfs_reg_t negate(pfs_reg_t r)
{
@@ -773,13 +780,15 @@ static void emit_tex(struct r300_fragment_program *rp,
cs->dest_in_node = 0;
}
- if (rp->cur_node == 0) rp->first_node_has_tex = 1;
+ if (rp->cur_node == 0)
+ rp->first_node_has_tex = 1;
- rp->tex.inst[rp->tex.length++] = 0
- | (hwsrc << R300_FPITX_SRC_SHIFT)
- | (hwdest << R300_FPITX_DST_SHIFT)
- | (unit << R300_FPITX_IMAGE_SHIFT)
- | (opcode << R300_FPITX_OPCODE_SHIFT); /* not entirely sure about this */
+ rp->tex.inst[rp->tex.length++] = 0
+ | (hwsrc << R300_FPITX_SRC_SHIFT)
+ | (hwdest << R300_FPITX_DST_SHIFT)
+ | (unit << R300_FPITX_IMAGE_SHIFT)
+ /* not entirely sure about this */
+ | (opcode << R300_FPITX_OPCODE_SHIFT);
cs->dest_in_node |= (1 << hwdest);
if (coord.type != REG_TYPE_CONST)
@@ -884,7 +893,7 @@ static void emit_arith(struct r300_fragment_program *rp, int op,
vop = r300_fpop[op].v_op;
sop = r300_fpop[op].s_op;
- argc = r300_fpop[op].argc;
+ argc = r300_fpop[op].argc;
if ((mask & WRITEMASK_XYZ) || vop == R300_FPI0_OUTC_DP3)
emit_vop = GL_TRUE;
@@ -1039,7 +1048,9 @@ static GLboolean parse_program(struct r300_fragment_program *rp)
const struct prog_instruction *inst = mp->Base.Instructions;
struct prog_instruction *fpi;
pfs_reg_t src[3], dest, temp;
+ pfs_reg_t cnst;
int flags, mask = 0;
+ GLfloat cnstv[4] = {0.0, 0.0, 0.0, 0.0};
if (!inst || inst[0].Opcode == OPCODE_END) {
ERROR("empty program?\n");
@@ -1179,7 +1190,66 @@ static GLboolean parse_program(struct r300_fragment_program *rp)
flags);
break;
case OPCODE_LIT:
- ERROR("LIT not implemented\n");
+ /* LIT
+ * if (s.x < 0) t.x = 0; else t.x = s.x;
+ * if (s.y < 0) t.y = 0; else t.y = s.y;
+ * if (s.w > 128.0) t.w = 128.0; else t.w = s.w;
+ * if (s.w < -128.0) t.w = -128.0; else t.w = s.w;
+ * r.x = 1.0
+ * if (t.x > 0) r.y = pow(t.y, t.w); else r.y = 0;
+ * Also r.y = 0 if t.y < 0
+ * For the t.x > 0 FGLRX use the CMPH opcode which
+ * change the compare to (t.x + 0.5) > 0.5 we may
+ * save one instruction by doing CMP -t.x
+ */
+ cnstv[0] = cnstv[1] = cnstv[2] = cnstv[4] = 0.50001;
+ src[0] = t_src(rp, fpi->SrcReg[0]);
+ temp = get_temp_reg(rp);
+ cnst = emit_const4fv(rp, cnstv);
+ emit_arith(rp, PFS_OP_CMP, temp,
+ WRITEMASK_X | WRITEMASK_Y,
+ src[0], pfs_zero, src[0], flags);
+ emit_arith(rp, PFS_OP_MIN, temp, WRITEMASK_Z,
+ swizzle(keep(src[0]), W, W, W, W),
+ cnst, undef, flags);
+ emit_arith(rp, PFS_OP_LG2, temp, WRITEMASK_W,
+ swizzle(temp, Y, Y, Y, Y),
+ undef, undef, flags);
+ emit_arith(rp, PFS_OP_MAX, temp, WRITEMASK_Z,
+ temp, negate(cnst), undef, flags);
+ emit_arith(rp, PFS_OP_MAD, temp, WRITEMASK_W,
+ temp, swizzle(temp, Z, Z, Z, Z),
+ pfs_zero, flags);
+ emit_arith(rp, PFS_OP_EX2, temp, WRITEMASK_W,
+ temp, undef, undef, flags);
+ emit_arith(rp, PFS_OP_MAD, dest, WRITEMASK_Y,
+ swizzle(keep(temp), X, X, X, X),
+ pfs_one, pfs_zero, flags);
+#if 0
+ emit_arith(rp, PFS_OP_MAD, temp, WRITEMASK_X,
+ temp, pfs_one, pfs_half, flags);
+ emit_arith(rp, PFS_OP_CMPH, temp, WRITEMASK_Z,
+ swizzle(keep(temp), W, W, W, W),
+ pfs_zero, swizzle(keep(temp), X, X, X, X),
+ flags);
+#else
+ emit_arith(rp, PFS_OP_CMP, temp, WRITEMASK_Z,
+ pfs_zero,
+ swizzle(keep(temp), W, W, W, W),
+ negate(swizzle(keep(temp), X, X, X, X)),
+ flags);
+#endif
+ emit_arith(rp, PFS_OP_CMP, dest, WRITEMASK_Z,
+ pfs_zero, temp,
+ negate(swizzle(keep(temp), Y, Y, Y, Y)),
+ flags);
+ emit_arith(rp, PFS_OP_MAD, dest,
+ WRITEMASK_X | WRITEMASK_W,
+ pfs_one,
+ pfs_one,
+ pfs_zero,
+ flags);
+ free_temp(rp, temp);
break;
case OPCODE_LRP:
src[0] = t_src(rp, fpi->SrcReg[0]);
@@ -1345,7 +1415,7 @@ static GLboolean parse_program(struct r300_fragment_program *rp)
return GL_FALSE;
}
-
+
return GL_TRUE;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 05:18:28 +0000