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-rw-r--r--src/gallium/auxiliary/draw/draw_vs_aos.c251
-rw-r--r--src/gallium/auxiliary/draw/draw_vs_aos.h27
2 files changed, 272 insertions, 6 deletions
diff --git a/src/gallium/auxiliary/draw/draw_vs_aos.c b/src/gallium/auxiliary/draw/draw_vs_aos.c
index aa119f242ee..1fbb7088ca6 100644
--- a/src/gallium/auxiliary/draw/draw_vs_aos.c
+++ b/src/gallium/auxiliary/draw/draw_vs_aos.c
@@ -105,8 +105,31 @@ static struct x86_reg get_reg_ptr(struct aos_compilation *cp,
#define X87_CW_ROUND_MASK (3<<10)
#define X87_CW_INFINITY (1<<12)
+static void do_populate_lut( struct shine_tab *tab,
+ float unclamped_exponent )
+{
+ const float epsilon = 1.0F / 256.0F;
+ float exponent = CLAMP(unclamped_exponent, -(128.0F - epsilon), (128.0F - epsilon));
+ unsigned i;
+
+ tab->exponent = unclamped_exponent; /* for later comparison */
+
+ tab->values[0] = 0;
+ if (exponent == 0) {
+ for (i = 1; i < 258; i++) {
+ tab->values[i] = 1.0;
+ }
+ }
+ else {
+ for (i = 1; i < 258; i++) {
+ tab->values[i] = powf((float)i * epsilon, exponent);
+ }
+ }
+}
+
static void init_internals( struct aos_machine *machine )
{
+ unsigned i;
float inv = 1.0f/255.0f;
float f255 = 255.0f;
@@ -141,6 +164,9 @@ static void init_internals( struct aos_machine *machine )
(1<<6) |
X87_CW_ROUND_DOWN |
X87_CW_PRECISION_DOUBLE_EXT);
+
+ for (i = 0; i < MAX_SHINE_TAB; i++)
+ do_populate_lut( &machine->shine_tab[i], 1.0f );
}
@@ -1132,26 +1158,231 @@ static boolean emit_FRC( struct aos_compilation *cp, const struct tgsi_full_inst
return TRUE;
}
+static PIPE_CDECL void do_lit( struct aos_machine *machine,
+ float *result,
+ const float *in,
+ unsigned count )
+{
+ if (in[0] > 0)
+ {
+ if (in[1] <= 0.0)
+ {
+ result[0] = 1.0F;
+ result[1] = in[0];
+ result[2] = 1.0;
+ result[3] = 1.0F;
+ }
+ else
+ {
+ const float epsilon = 1.0F / 256.0F;
+ float exponent = CLAMP(in[3], -(128.0F - epsilon), (128.0F - epsilon));
+ result[0] = 1.0F;
+ result[1] = in[0];
+ result[2] = powf(in[1], exponent);
+ result[3] = 1.0;
+ }
+ }
+ else
+ {
+ result[0] = 1.0F;
+ result[1] = 0.0;
+ result[2] = 0.0;
+ result[3] = 1.0F;
+ }
+}
+
+
+static PIPE_CDECL void do_lit_lut( struct aos_machine *machine,
+ float *result,
+ const float *in,
+ unsigned count )
+{
+ if (in[0] > 0)
+ {
+ if (in[1] <= 0.0)
+ {
+ result[0] = 1.0F;
+ result[1] = in[0];
+ result[2] = 1.0;
+ result[3] = 1.0F;
+ return;
+ }
+
+ if (machine->lit_info[count].shine_tab->exponent != in[3]) {
+ machine->lit_info[count].func = do_lit;
+ goto no_luck;
+ }
+
+ if (in[1] <= 1.0)
+ {
+ const float *tab = machine->lit_info[count].shine_tab->values;
+ float f = in[1] * 256;
+ int k = (int)f;
+ float frac = f - (float)k;
+
+ result[0] = 1.0F;
+ result[1] = in[0];
+ result[2] = tab[k] + frac*(tab[k+1]-tab[k]);
+ result[3] = 1.0;
+ return;
+ }
+
+ no_luck:
+ {
+ const float epsilon = 1.0F / 256.0F;
+ float exponent = CLAMP(in[3], -(128.0F - epsilon), (128.0F - epsilon));
+ result[0] = 1.0F;
+ result[1] = in[0];
+ result[2] = powf(in[1], exponent);
+ result[3] = 1.0;
+ }
+ }
+ else
+ {
+ result[0] = 1.0F;
+ result[1] = 0.0;
+ result[2] = 0.0;
+ result[3] = 1.0F;
+ }
+}
+
+
+
+static void PIPE_CDECL populate_lut( struct aos_machine *machine,
+ float *result,
+ const float *in,
+ unsigned count )
+{
+ unsigned i, tab;
+
+ /* Search for an existing table for this value. Note that without
+ * static analysis we don't really know if in[3] will be constant,
+ * but it usually is...
+ */
+ for (tab = 0; tab < 4; tab++) {
+ if (machine->shine_tab[tab].exponent == in[3]) {
+ goto found;
+ }
+ }
+
+ for (tab = 0, i = 1; i < 4; i++) {
+ if (machine->shine_tab[i].last_used < machine->shine_tab[tab].last_used)
+ tab = i;
+ }
+
+ if (machine->shine_tab[tab].last_used == machine->now) {
+ /* No unused tables (this is not a ffvertex program...). Just
+ * call pow each time:
+ */
+ machine->lit_info[count].func = do_lit;
+ machine->lit_info[count].func( machine, result, in, count );
+ return;
+ }
+ else {
+ do_populate_lut( &machine->shine_tab[tab], in[3] );
+ }
+
+ found:
+ machine->shine_tab[tab].last_used = machine->now;
+ machine->lit_info[count].shine_tab = &machine->shine_tab[tab];
+ machine->lit_info[count].func = do_lit_lut;
+ machine->lit_info[count].func( machine, result, in, count );
+}
+
+
+
static boolean emit_LIT( struct aos_compilation *cp, const struct tgsi_full_instruction *op )
{
- struct x86_reg dst = get_dst_ptr(cp, &op->FullDstRegisters[0]);
+ struct x86_reg ecx = x86_make_reg( file_REG32, reg_CX );
unsigned writemask = op->FullDstRegisters[0].DstRegister.WriteMask;
+ unsigned lit_count = cp->lit_count++;
+ struct x86_reg result, arg0;
+ unsigned i;
+
+#if 1
+ /* For absolute correctness, need to spill/invalidate all XMM regs
+ * too.
+ */
+ for (i = 0; i < 8; i++) {
+ if (cp->xmm[i].dirty)
+ spill(cp, i);
+ aos_release_xmm_reg(cp, i);
+ }
+#endif
+
+ if (writemask != TGSI_WRITEMASK_XYZW)
+ result = x86_make_disp(cp->machine_EDX, Offset(struct aos_machine, tmp[0]));
+ else
+ result = get_dst_ptr(cp, &op->FullDstRegisters[0]);
+
+
+ arg0 = fetch_src( cp, &op->FullSrcRegisters[0] );
+ if (arg0.file == file_XMM) {
+ struct x86_reg tmp = x86_make_disp(cp->machine_EDX,
+ Offset(struct aos_machine, tmp[1]));
+ sse_movaps( cp->func, tmp, arg0 );
+ arg0 = tmp;
+ }
+
+
+
+ /* Push caller-save (ie scratch) regs.
+ */
+ x86_cdecl_caller_push_regs( cp->func );
+
+ /* Push the arguments:
+ */
+ x86_push_imm32( cp->func, lit_count );
+
+ x86_lea( cp->func, ecx, arg0 );
+ x86_push( cp->func, ecx );
+ x86_lea( cp->func, ecx, result );
+ x86_push( cp->func, ecx );
+ x86_push( cp->func, cp->machine_EDX );
+ if (lit_count < MAX_LIT_INFO) {
+ x86_mov( cp->func, ecx, x86_make_disp( cp->machine_EDX,
+ Offset(struct aos_machine, lit_info) +
+ lit_count * sizeof(struct lit_info) +
+ Offset(struct lit_info, func)));
+ }
+ else {
+ x86_mov_reg_imm( cp->func, ecx, (int)do_lit );
+ }
+
+ x86_call( cp->func, ecx );
+
+ x86_pop( cp->func, ecx ); /* fixme... */
+ x86_pop( cp->func, ecx );
+ x86_pop( cp->func, ecx );
+ x86_pop( cp->func, ecx );
+
+ x86_cdecl_caller_pop_regs( cp->func );
+
+ if (writemask != TGSI_WRITEMASK_XYZW) {
+ store_dest( cp,
+ &op->FullDstRegisters[0],
+ get_xmm_clone( cp, result ) );
+ }
+
+ return TRUE;
+}
+
+
+static boolean emit_inline_LIT( struct aos_compilation *cp, const struct tgsi_full_instruction *op )
+{
+ struct x86_reg dst = get_dst_ptr(cp, &op->FullDstRegisters[0]);
+ unsigned writemask = op->FullDstRegisters[0].DstRegister.WriteMask;
if (writemask & TGSI_WRITEMASK_YZ) {
struct x86_reg st1 = x86_make_reg(file_x87, 1);
struct x86_reg st2 = x86_make_reg(file_x87, 2);
-
-
-
/* a1' = a1 <= 0 ? 1 : a1;
- *
- * Note: use 1.0 to avoid passing zero to
*/
x87_fldz(cp->func); /* 1 0 */
#if 1
@@ -1865,6 +2096,14 @@ static void vaos_set_constants( struct draw_vs_varient *varient,
constants[i][2],
constants[i][3]);
#endif
+
+ {
+ unsigned i;
+ for (i = 0; i < MAX_LIT_INFO; i++) {
+ vaos->machine->lit_info[i].func = populate_lut;
+ vaos->machine->now++;
+ }
+ }
}
diff --git a/src/gallium/auxiliary/draw/draw_vs_aos.h b/src/gallium/auxiliary/draw/draw_vs_aos.h
index a0680ec63d2..c08c73d4bc0 100644
--- a/src/gallium/auxiliary/draw/draw_vs_aos.h
+++ b/src/gallium/auxiliary/draw/draw_vs_aos.h
@@ -59,6 +59,25 @@ struct x86_function;
#define FPU_RND_NEG 1
#define FPU_RND_NEAREST 2
+struct aos_machine;
+typedef void PIPE_CDECL (*lit_func)( struct aos_machine *,
+ float *result,
+ const float *in,
+ unsigned count );
+struct shine_tab {
+ float exponent;
+ float values[258];
+ unsigned last_used;
+};
+
+struct lit_info {
+ lit_func func;
+ struct shine_tab *shine_tab;
+};
+
+#define MAX_SHINE_TAB 4
+#define MAX_LIT_INFO 16
+
/* This is the temporary storage used by all the aos_sse vs varients.
* Create one per context and reuse by passing a pointer in at
* vs_varient creation??
@@ -74,6 +93,13 @@ struct aos_machine {
float scale[4]; /* viewport */
float translate[4]; /* viewport */
+ float tmp[2][4]; /* scratch space for LIT */
+
+ struct shine_tab shine_tab[MAX_SHINE_TAB];
+ struct lit_info lit_info[MAX_LIT_INFO];
+ unsigned now;
+
+
ushort fpu_rnd_nearest;
ushort fpu_rnd_neg_inf;
ushort fpu_restore;
@@ -97,6 +123,7 @@ struct aos_compilation {
unsigned insn_counter;
unsigned num_immediates;
unsigned count;
+ unsigned lit_count;
struct {
unsigned idx:16;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 20:17:16 +0000