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-rw-r--r--src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c23
-rw-r--r--src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h4
-rw-r--r--src/gallium/drivers/cell/ppu/cell_gen_fragment.c143
3 files changed, 163 insertions, 7 deletions
diff --git a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
index 12e0826fb9b..f60bfba3f51 100644
--- a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
+++ b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
@@ -592,11 +592,32 @@ spe_load_int(struct spe_function *p, unsigned rT, int i)
}
}
+void spe_load_uint(struct spe_function *p, unsigned rT, unsigned int ui)
+{
+ /* If the whole value is in the lower 18 bits, use ila, which
+ * doesn't sign-extend. Otherwise, if the two halfwords of
+ * the constant are identical, use ilh. Otherwise, we have
+ * to use ilhu followed by iohl.
+ */
+ if ((ui & 0xfffc0000) == ui) {
+ spe_ila(p, rT, ui);
+ }
+ else if ((ui >> 16) == (ui & 0xffff)) {
+ spe_ilh(p, rT, ui & 0xffff);
+ }
+ else {
+ spe_ilhu(p, rT, ui >> 16);
+ if (ui & 0xffff)
+ spe_iohl(p, rT, ui & 0xffff);
+ }
+}
+
void
spe_splat(struct spe_function *p, unsigned rT, unsigned rA)
{
- spe_ila(p, rT, 66051);
+ /* Duplicate bytes 0, 1, 2, and 3 across the whole register */
+ spe_ila(p, rT, 0x00010203);
spe_shufb(p, rT, rA, rA, rT);
}
diff --git a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h
index 4ef05ea27d1..09400b3fb2a 100644
--- a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h
+++ b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h
@@ -302,6 +302,10 @@ spe_load_float(struct spe_function *p, unsigned rT, float x);
extern void
spe_load_int(struct spe_function *p, unsigned rT, int i);
+/** Load/splat immediate unsigned int into rT. */
+extern void
+spe_load_uint(struct spe_function *p, unsigned rT, unsigned int ui);
+
/** Replicate word 0 of rA across rT. */
extern void
spe_splat(struct spe_function *p, unsigned rT, unsigned rA);
diff --git a/src/gallium/drivers/cell/ppu/cell_gen_fragment.c b/src/gallium/drivers/cell/ppu/cell_gen_fragment.c
index 9d25e820ad9..899d8423b24 100644
--- a/src/gallium/drivers/cell/ppu/cell_gen_fragment.c
+++ b/src/gallium/drivers/cell/ppu/cell_gen_fragment.c
@@ -902,8 +902,69 @@ gen_logicop(const struct pipe_blend_state *blend,
struct spe_function *f,
int fragRGBA_reg, int fbRGBA_reg)
{
- /* XXX to-do */
- /* operate on 32-bit packed pixels, not float colors */
+ /* We've got four 32-bit RGBA packed pixels in each of
+ * fragRGBA_reg and fbRGBA_reg, not sets of floating-point
+ * reds, greens, blues, and alphas.
+ * */
+ ASSERT(blend->logicop_enable);
+
+ switch(blend->logicop_func) {
+ case PIPE_LOGICOP_CLEAR: /* 0 */
+ spe_zero(f, fragRGBA_reg);
+ break;
+ case PIPE_LOGICOP_NOR: /* ~(s | d) */
+ spe_nor(f, fragRGBA_reg, fragRGBA_reg, fbRGBA_reg);
+ break;
+ case PIPE_LOGICOP_AND_INVERTED: /* ~s & d */
+ /* andc R, A, B computes R = A & ~B */
+ spe_andc(f, fragRGBA_reg, fbRGBA_reg, fragRGBA_reg);
+ break;
+ case PIPE_LOGICOP_COPY_INVERTED: /* ~s */
+ spe_complement(f, fragRGBA_reg);
+ break;
+ case PIPE_LOGICOP_AND_REVERSE: /* s & ~d */
+ /* andc R, A, B computes R = A & ~B */
+ spe_andc(f, fragRGBA_reg, fragRGBA_reg, fbRGBA_reg);
+ break;
+ case PIPE_LOGICOP_INVERT: /* ~d */
+ /* Note that (A nor A) == ~(A|A) == ~A */
+ spe_nor(f, fragRGBA_reg, fbRGBA_reg, fbRGBA_reg);
+ break;
+ case PIPE_LOGICOP_XOR: /* s ^ d */
+ spe_xor(f, fragRGBA_reg, fragRGBA_reg, fbRGBA_reg);
+ break;
+ case PIPE_LOGICOP_NAND: /* ~(s & d) */
+ spe_nand(f, fragRGBA_reg, fragRGBA_reg, fbRGBA_reg);
+ break;
+ case PIPE_LOGICOP_AND: /* s & d */
+ spe_and(f, fragRGBA_reg, fragRGBA_reg, fbRGBA_reg);
+ break;
+ case PIPE_LOGICOP_EQUIV: /* ~(s ^ d) */
+ spe_xor(f, fragRGBA_reg, fragRGBA_reg, fbRGBA_reg);
+ spe_complement(f, fragRGBA_reg);
+ break;
+ case PIPE_LOGICOP_NOOP: /* d */
+ spe_move(f, fragRGBA_reg, fbRGBA_reg);
+ break;
+ case PIPE_LOGICOP_OR_INVERTED: /* ~s | d */
+ /* orc R, A, B computes R = A | ~B */
+ spe_orc(f, fragRGBA_reg, fbRGBA_reg, fragRGBA_reg);
+ break;
+ case PIPE_LOGICOP_COPY: /* s */
+ break;
+ case PIPE_LOGICOP_OR_REVERSE: /* s | ~d */
+ /* orc R, A, B computes R = A | ~B */
+ spe_orc(f, fragRGBA_reg, fragRGBA_reg, fbRGBA_reg);
+ break;
+ case PIPE_LOGICOP_OR: /* s | d */
+ spe_or(f, fragRGBA_reg, fragRGBA_reg, fbRGBA_reg);
+ break;
+ case PIPE_LOGICOP_SET: /* 1 */
+ spe_load_int(f, fragRGBA_reg, 0xffffffff);
+ break;
+ default:
+ ASSERT(0);
+ }
}
@@ -912,11 +973,81 @@ gen_colormask(uint colormask,
struct spe_function *f,
int fragRGBA_reg, int fbRGBA_reg)
{
- /* XXX to-do */
- /* operate on 32-bit packed pixels, not float colors */
-}
+ /* We've got four 32-bit RGBA packed pixels in each of
+ * fragRGBA_reg and fbRGBA_reg, not sets of floating-point
+ * reds, greens, blues, and alphas.
+ * */
+
+ /* The color mask operation can prevent any set of color
+ * components in the incoming fragment from being written to the frame
+ * buffer; we do this by replacing the masked components of the
+ * fragment with the frame buffer values.
+ *
+ * There are only 16 possibilities, with a unique mask for
+ * each of the possibilities. (Technically, there are only 15
+ * possibilities, since we shouldn't be called for the one mask
+ * that does nothing, but the complete implementation is here
+ * anyway to avoid confusion.)
+ *
+ * We implement this via a constant static array which we'll index
+ * into to get the correct mask.
+ *
+ * We're dependent on the mask values being low-order bits,
+ * with particular values for each bit; so we start with a
+ * few assertions, which will fail if any of the values were
+ * to change.
+ */
+ ASSERT(PIPE_MASK_R == 0x1);
+ ASSERT(PIPE_MASK_G == 0x2);
+ ASSERT(PIPE_MASK_B == 0x4);
+ ASSERT(PIPE_MASK_A == 0x8);
+ /* Here's the list of all possible colormasks, indexed by the
+ * value of the combined mask specifier.
+ */
+ static const unsigned int colormasks[16] = {
+ 0x00000000, /* 0: all colors masked */
+ 0xff000000, /* 1: PIPE_MASK_R */
+ 0x00ff0000, /* 2: PIPE_MASK_G */
+ 0xffff0000, /* 3: PIPE_MASK_R | PIPE_MASK_G */
+ 0x0000ff00, /* 4: PIPE_MASK_B */
+ 0xff00ff00, /* 5: PIPE_MASK_R | PIPE_MASK_B */
+ 0x00ffff00, /* 6: PIPE_MASK_G | PIPE_MASK_B */
+ 0xffffff00, /* 7: PIPE_MASK_R | PIPE_MASK_G | PIPE_MASK_B */
+ 0x000000ff, /* 8: PIPE_MASK_A */
+ 0xff0000ff, /* 9: PIPE_MASK_R | PIPE_MASK_A */
+ 0x00ff00ff, /* 10: PIPE_MASK_G | PIPE_MASK_A */
+ 0xffff00ff, /* 11: PIPE_MASK_R | PIPE_MASK_G | PIPE_MASK_A */
+ 0x0000ffff, /* 12: PIPE_MASK_B | PIPE_MASK_A */
+ 0xff00ffff, /* 13: PIPE_MASK_R | PIPE_MASK_B | PIPE_MASK_A */
+ 0x00ffffff, /* 14: PIPE_MASK_G | PIPE_MASK_B | PIPE_MASK_A */
+ 0xffffffff /* 15: PIPE_MASK_R | PIPE_MASK_G | PIPE_MASK_B | PIPE_MASK_A */
+ };
+
+ /* Get a temporary register to hold the mask */
+ int colormask_reg = spe_allocate_available_register(f);
+
+ /* Look up the desired mask directly and load it into the mask register.
+ * This will load the same mask into each of the four words in the
+ * mask register.
+ */
+ spe_load_uint(f, colormask_reg, colormasks[colormask]);
+
+ /* Use the mask register to select between the fragment color
+ * values and the frame buffer color values. Wherever the
+ * mask has a 0 bit, the current frame buffer color should override
+ * the fragment color. Wherever the mask has a 1 bit, the
+ * fragment color should persevere. The Select Bits (selb rt, rA, rB, rM)
+ * instruction will select bits from its first operand rA wherever the
+ * the mask bits rM are 0, and from its second operand rB wherever the
+ * mask bits rM are 1. That means that the frame buffer color is the
+ * first operand, and the fragment color the second.
+ */
+ spe_selb(f, fragRGBA_reg, fbRGBA_reg, fragRGBA_reg, colormask_reg);
+ /* Release the temporary register and we're done */
+ spe_release_register(f, colormask_reg);
+}
/**
* Generate code to pack a quad of float colors into a four 32-bit integers.
@@ -1223,7 +1354,7 @@ cell_gen_fragment_function(struct cell_context *cell, struct spe_function *f)
gen_logicop(blend, f, rgba_reg, fbRGBA_reg);
}
- if (blend->colormask != 0xf) {
+ if (blend->colormask != PIPE_MASK_RGBA) {
gen_colormask(blend->colormask, f, rgba_reg, fbRGBA_reg);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 03:32:18 +0000