summaryrefslogtreecommitdiff
path: root/src/mesa/drivers/dri/i965/brw_wm_fp.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_wm_fp.c')
-rw-r--r--src/mesa/drivers/dri/i965/brw_wm_fp.c469
1 files changed, 309 insertions, 160 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm_fp.c b/src/mesa/drivers/dri/i965/brw_wm_fp.c
index 6df2c95d80..4e3edfbbff 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_fp.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_fp.c
@@ -42,6 +42,12 @@
#include "shader/prog_statevars.h"
+/** An invalid texture target */
+#define TEX_TARGET_NONE NUM_TEXTURE_TARGETS
+
+/** An invalid texture unit */
+#define TEX_UNIT_NONE BRW_MAX_TEX_UNIT
+
#define FIRST_INTERNAL_TEMP MAX_NV_FRAGMENT_PROGRAM_TEMPS
#define X 0
@@ -58,7 +64,8 @@ static const char *wm_opcode_strings[] = {
"PINTERP",
"CINTERP",
"WPOSXY",
- "FB_WRITE"
+ "FB_WRITE",
+ "FRONTFACING",
};
#if 0
@@ -79,9 +86,8 @@ static struct prog_src_register src_reg(GLuint file, GLuint idx)
reg.Index = idx;
reg.Swizzle = SWIZZLE_NOOP;
reg.RelAddr = 0;
- reg.NegateBase = 0;
+ reg.Negate = NEGATE_NONE;
reg.Abs = 0;
- reg.NegateAbs = 0;
return reg;
}
@@ -111,6 +117,12 @@ static struct prog_src_register src_swizzle1( struct prog_src_register reg, int
return src_swizzle(reg, x, x, x, x);
}
+static struct prog_src_register src_swizzle4( struct prog_src_register reg, uint swizzle )
+{
+ reg.Swizzle = swizzle;
+ return reg;
+}
+
/***********************************************************************
* Dest regs
@@ -123,7 +135,7 @@ static struct prog_dst_register dst_reg(GLuint file, GLuint idx)
reg.Index = idx;
reg.WriteMask = WRITEMASK_XYZW;
reg.RelAddr = 0;
- reg.CondMask = 0;
+ reg.CondMask = COND_TR;
reg.CondSwizzle = 0;
reg.CondSrc = 0;
reg.pad = 0;
@@ -177,22 +189,31 @@ static struct prog_instruction *emit_insn(struct brw_wm_compile *c,
{
struct prog_instruction *inst = get_fp_inst(c);
*inst = *inst0;
- inst->Data = (void *)inst0;
return inst;
}
-static struct prog_instruction * emit_op(struct brw_wm_compile *c,
+static struct prog_instruction * emit_tex_op(struct brw_wm_compile *c,
GLuint op,
struct prog_dst_register dest,
GLuint saturate,
GLuint tex_src_unit,
GLuint tex_src_target,
+ GLuint tex_shadow,
struct prog_src_register src0,
struct prog_src_register src1,
struct prog_src_register src2 )
{
struct prog_instruction *inst = get_fp_inst(c);
+ assert(tex_src_unit < BRW_MAX_TEX_UNIT ||
+ tex_src_unit == TEX_UNIT_NONE);
+ assert(tex_src_target < NUM_TEXTURE_TARGETS ||
+ tex_src_target == TEX_TARGET_NONE);
+
+ /* update mask of which texture units are referenced by this program */
+ if (tex_src_unit != TEX_UNIT_NONE)
+ c->fp->tex_units_used |= (1 << tex_src_unit);
+
memset(inst, 0, sizeof(*inst));
inst->Opcode = op;
@@ -200,6 +221,7 @@ static struct prog_instruction * emit_op(struct brw_wm_compile *c,
inst->SaturateMode = saturate;
inst->TexSrcUnit = tex_src_unit;
inst->TexSrcTarget = tex_src_target;
+ inst->TexShadow = tex_shadow;
inst->SrcReg[0] = src0;
inst->SrcReg[1] = src1;
inst->SrcReg[2] = src2;
@@ -207,6 +229,53 @@ static struct prog_instruction * emit_op(struct brw_wm_compile *c,
}
+static struct prog_instruction * emit_op(struct brw_wm_compile *c,
+ GLuint op,
+ struct prog_dst_register dest,
+ GLuint saturate,
+ struct prog_src_register src0,
+ struct prog_src_register src1,
+ struct prog_src_register src2 )
+{
+ return emit_tex_op(c, op, dest, saturate,
+ TEX_UNIT_NONE, TEX_TARGET_NONE, 0, /* unit, tgt, shadow */
+ src0, src1, src2);
+}
+
+
+/* Many Mesa opcodes produce the same value across all the result channels.
+ * We'd rather not have to support that splatting in the opcode implementations,
+ * and brw_wm_pass*.c wants to optimize them out by shuffling references around
+ * anyway. We can easily get both by emitting the opcode to one channel, and
+ * then MOVing it to the others, which brw_wm_pass*.c already understands.
+ */
+static struct prog_instruction *emit_scalar_insn(struct brw_wm_compile *c,
+ const struct prog_instruction *inst0)
+{
+ struct prog_instruction *inst;
+ unsigned int dst_chan;
+ unsigned int other_channel_mask;
+
+ if (inst0->DstReg.WriteMask == 0)
+ return NULL;
+
+ dst_chan = _mesa_ffs(inst0->DstReg.WriteMask) - 1;
+ inst = get_fp_inst(c);
+ *inst = *inst0;
+ inst->DstReg.WriteMask = 1 << dst_chan;
+
+ other_channel_mask = inst0->DstReg.WriteMask & ~(1 << dst_chan);
+ if (other_channel_mask != 0) {
+ inst = emit_op(c,
+ OPCODE_MOV,
+ dst_mask(inst0->DstReg, other_channel_mask),
+ 0,
+ src_swizzle1(src_reg_from_dst(inst0->DstReg), dst_chan),
+ src_undef(),
+ src_undef());
+ }
+ return inst;
+}
/***********************************************************************
@@ -228,7 +297,7 @@ static struct prog_src_register get_pixel_xy( struct brw_wm_compile *c )
emit_op(c,
WM_PIXELXY,
dst_mask(pixel_xy, WRITEMASK_XY),
- 0, 0, 0,
+ 0,
payload_r0_depth,
src_undef(),
src_undef());
@@ -251,7 +320,7 @@ static struct prog_src_register get_delta_xy( struct brw_wm_compile *c )
emit_op(c,
WM_DELTAXY,
dst_mask(delta_xy, WRITEMASK_XY),
- 0, 0, 0,
+ 0,
pixel_xy,
payload_r0_depth,
src_undef());
@@ -268,14 +337,13 @@ static struct prog_src_register get_pixel_w( struct brw_wm_compile *c )
struct prog_dst_register pixel_w = get_temp(c);
struct prog_src_register deltas = get_delta_xy(c);
struct prog_src_register interp_wpos = src_reg(PROGRAM_PAYLOAD, FRAG_ATTRIB_WPOS);
-
-
+
/* deltas.xyw = DELTAS2 deltas.xy, payload.interp_wpos.x
*/
emit_op(c,
WM_PIXELW,
dst_mask(pixel_w, WRITEMASK_W),
- 0, 0, 0,
+ 0,
interp_wpos,
deltas,
src_undef());
@@ -293,24 +361,19 @@ static void emit_interp( struct brw_wm_compile *c,
struct prog_dst_register dst = dst_reg(PROGRAM_INPUT, idx);
struct prog_src_register interp = src_reg(PROGRAM_PAYLOAD, idx);
struct prog_src_register deltas = get_delta_xy(c);
- struct prog_src_register arg2;
- GLuint opcode;
-
+
/* Need to use PINTERP on attributes which have been
* multiplied by 1/W in the SF program, and LINTERP on those
* which have not:
*/
switch (idx) {
case FRAG_ATTRIB_WPOS:
- opcode = WM_LINTERP;
- arg2 = src_undef();
-
/* Have to treat wpos.xy specially:
*/
emit_op(c,
WM_WPOSXY,
dst_mask(dst, WRITEMASK_XY),
- 0, 0, 0,
+ 0,
get_pixel_xy(c),
src_undef(),
src_undef());
@@ -322,10 +385,10 @@ static void emit_interp( struct brw_wm_compile *c,
emit_op(c,
WM_LINTERP,
dst,
- 0, 0, 0,
+ 0,
interp,
deltas,
- arg2);
+ src_undef());
break;
case FRAG_ATTRIB_COL0:
case FRAG_ATTRIB_COL1:
@@ -333,26 +396,95 @@ static void emit_interp( struct brw_wm_compile *c,
emit_op(c,
WM_CINTERP,
dst,
- 0, 0, 0,
+ 0,
interp,
src_undef(),
src_undef());
}
else {
- emit_op(c,
- WM_LINTERP,
- dst,
- 0, 0, 0,
- interp,
- deltas,
- src_undef());
+ if (c->key.linear_color) {
+ emit_op(c,
+ WM_LINTERP,
+ dst,
+ 0,
+ interp,
+ deltas,
+ src_undef());
+ }
+ else {
+ /* perspective-corrected color interpolation */
+ emit_op(c,
+ WM_PINTERP,
+ dst,
+ 0,
+ interp,
+ deltas,
+ get_pixel_w(c));
+ }
}
break;
+ case FRAG_ATTRIB_FOGC:
+ /* Interpolate the fog coordinate */
+ emit_op(c,
+ WM_PINTERP,
+ dst_mask(dst, WRITEMASK_X),
+ 0,
+ interp,
+ deltas,
+ get_pixel_w(c));
+
+ emit_op(c,
+ OPCODE_MOV,
+ dst_mask(dst, WRITEMASK_YZW),
+ 0,
+ src_swizzle(interp,
+ SWIZZLE_ZERO,
+ SWIZZLE_ZERO,
+ SWIZZLE_ZERO,
+ SWIZZLE_ONE),
+ src_undef(),
+ src_undef());
+ break;
+
+ case FRAG_ATTRIB_FACE:
+ /* XXX review/test this case */
+ emit_op(c,
+ WM_FRONTFACING,
+ dst_mask(dst, WRITEMASK_X),
+ 0,
+ src_undef(),
+ src_undef(),
+ src_undef());
+ break;
+
+ case FRAG_ATTRIB_PNTC:
+ /* XXX review/test this case */
+ emit_op(c,
+ WM_PINTERP,
+ dst_mask(dst, WRITEMASK_XY),
+ 0,
+ interp,
+ deltas,
+ get_pixel_w(c));
+
+ emit_op(c,
+ OPCODE_MOV,
+ dst_mask(dst, WRITEMASK_ZW),
+ 0,
+ src_swizzle(interp,
+ SWIZZLE_ZERO,
+ SWIZZLE_ZERO,
+ SWIZZLE_ZERO,
+ SWIZZLE_ONE),
+ src_undef(),
+ src_undef());
+ break;
+
default:
emit_op(c,
WM_PINTERP,
dst,
- 0, 0, 0,
+ 0,
interp,
deltas,
get_pixel_w(c));
@@ -362,38 +494,6 @@ static void emit_interp( struct brw_wm_compile *c,
c->fp_interp_emitted |= 1<<idx;
}
-static void emit_ddx( struct brw_wm_compile *c,
- const struct prog_instruction *inst )
-{
- GLuint idx = inst->SrcReg[0].Index;
- struct prog_src_register interp = src_reg(PROGRAM_PAYLOAD, idx);
-
- c->fp_deriv_emitted |= 1<<idx;
- emit_op(c,
- OPCODE_DDX,
- inst->DstReg,
- 0, 0, 0,
- interp,
- get_pixel_w(c),
- src_undef());
-}
-
-static void emit_ddy( struct brw_wm_compile *c,
- const struct prog_instruction *inst )
-{
- GLuint idx = inst->SrcReg[0].Index;
- struct prog_src_register interp = src_reg(PROGRAM_PAYLOAD, idx);
-
- c->fp_deriv_emitted |= 1<<idx;
- emit_op(c,
- OPCODE_DDY,
- inst->DstReg,
- 0, 0, 0,
- interp,
- get_pixel_w(c),
- src_undef());
-}
-
/***********************************************************************
* Hacks to extend the program parameter and constant lists.
*/
@@ -483,13 +583,12 @@ static void precalc_dst( struct brw_wm_compile *c,
emit_op(c,
OPCODE_MUL,
dst_mask(dst, WRITEMASK_Y),
- inst->SaturateMode, 0, 0,
+ inst->SaturateMode,
src0,
src1,
src_undef());
}
-
if (dst.WriteMask & WRITEMASK_XZ) {
struct prog_instruction *swz;
GLuint z = GET_SWZ(src0.Swizzle, Z);
@@ -499,12 +598,12 @@ static void precalc_dst( struct brw_wm_compile *c,
swz = emit_op(c,
OPCODE_SWZ,
dst_mask(dst, WRITEMASK_XZ),
- inst->SaturateMode, 0, 0,
+ inst->SaturateMode,
src_swizzle(src0, SWIZZLE_ONE, z, z, z),
src_undef(),
src_undef());
/* Avoid letting negation flag of src0 affect our 1 constant. */
- swz->SrcReg[0].NegateBase &= ~NEGATE_X;
+ swz->SrcReg[0].Negate &= ~NEGATE_X;
}
if (dst.WriteMask & WRITEMASK_W) {
/* dst.w = mov src1.w
@@ -512,7 +611,7 @@ static void precalc_dst( struct brw_wm_compile *c,
emit_op(c,
OPCODE_MOV,
dst_mask(dst, WRITEMASK_W),
- inst->SaturateMode, 0, 0,
+ inst->SaturateMode,
src1,
src_undef(),
src_undef());
@@ -534,32 +633,40 @@ static void precalc_lit( struct brw_wm_compile *c,
swz = emit_op(c,
OPCODE_SWZ,
dst_mask(dst, WRITEMASK_XW),
- 0, 0, 0,
+ 0,
src_swizzle1(src0, SWIZZLE_ONE),
src_undef(),
src_undef());
/* Avoid letting the negation flag of src0 affect our 1 constant. */
- swz->SrcReg[0].NegateBase = 0;
+ swz->SrcReg[0].Negate = NEGATE_NONE;
}
-
if (dst.WriteMask & WRITEMASK_YZ) {
emit_op(c,
OPCODE_LIT,
dst_mask(dst, WRITEMASK_YZ),
- inst->SaturateMode, 0, 0,
+ inst->SaturateMode,
src0,
src_undef(),
src_undef());
}
}
+
+/**
+ * Some TEX instructions require extra code, cube map coordinate
+ * normalization, or coordinate scaling for RECT textures, etc.
+ * This function emits those extra instructions and the TEX
+ * instruction itself.
+ */
static void precalc_tex( struct brw_wm_compile *c,
const struct prog_instruction *inst )
{
struct prog_src_register coord;
struct prog_dst_register tmpcoord;
- GLuint unit = c->fp->program.Base.SamplerUnits[inst->TexSrcUnit];
+ const GLuint unit = c->fp->program.Base.SamplerUnits[inst->TexSrcUnit];
+
+ assert(unit < BRW_MAX_TEX_UNIT);
if (inst->TexSrcTarget == TEXTURE_CUBE_INDEX) {
struct prog_instruction *out;
@@ -569,49 +676,56 @@ static void precalc_tex( struct brw_wm_compile *c,
struct prog_src_register tmp1src = src_reg_from_dst(tmp1);
struct prog_src_register src0 = inst->SrcReg[0];
+ /* find longest component of coord vector and normalize it */
tmpcoord = get_temp(c);
coord = src_reg_from_dst(tmpcoord);
+ /* tmpcoord = src0 (i.e.: coord = src0) */
out = emit_op(c, OPCODE_MOV,
tmpcoord,
- 0, 0, 0,
+ 0,
src0,
src_undef(),
src_undef());
- out->SrcReg[0].NegateBase = 0;
+ out->SrcReg[0].Negate = NEGATE_NONE;
out->SrcReg[0].Abs = 1;
+ /* tmp0 = MAX(coord.X, coord.Y) */
emit_op(c, OPCODE_MAX,
tmp0,
- 0, 0, 0,
+ 0,
src_swizzle1(coord, X),
src_swizzle1(coord, Y),
src_undef());
+ /* tmp1 = MAX(tmp0, coord.Z) */
emit_op(c, OPCODE_MAX,
tmp1,
- 0, 0, 0,
+ 0,
tmp0src,
src_swizzle1(coord, Z),
src_undef());
+ /* tmp0 = 1 / tmp1 */
emit_op(c, OPCODE_RCP,
- tmp0,
- 0, 0, 0,
+ dst_mask(tmp0, WRITEMASK_X),
+ 0,
tmp1src,
src_undef(),
src_undef());
+ /* tmpCoord = src0 * tmp0 */
emit_op(c, OPCODE_MUL,
tmpcoord,
- 0, 0, 0,
+ 0,
src0,
- tmp0src,
+ src_swizzle1(tmp0src, SWIZZLE_X),
src_undef());
release_temp(c, tmp0);
release_temp(c, tmp1);
- } else if (inst->TexSrcTarget == TEXTURE_RECT_INDEX) {
+ }
+ else if (inst->TexSrcTarget == TEXTURE_RECT_INDEX) {
struct prog_src_register scale =
search_or_add_param5( c,
STATE_INTERNAL,
@@ -626,9 +740,13 @@ static void precalc_tex( struct brw_wm_compile *c,
emit_op(c,
OPCODE_MUL,
tmpcoord,
- 0, 0, 0,
+ 0,
inst->SrcReg[0],
- scale,
+ src_swizzle(scale,
+ SWIZZLE_X,
+ SWIZZLE_Y,
+ SWIZZLE_ONE,
+ SWIZZLE_ONE),
src_undef());
coord = src_reg_from_dst(tmpcoord);
@@ -642,19 +760,9 @@ static void precalc_tex( struct brw_wm_compile *c,
* conversion requires allocating a temporary variable which we
* don't have the facility to do that late in the compilation.
*/
- if (!(c->key.yuvtex_mask & (1<<unit))) {
- emit_op(c,
- OPCODE_TEX,
- inst->DstReg,
- inst->SaturateMode,
- unit,
- inst->TexSrcTarget,
- coord,
- src_undef(),
- src_undef());
- }
- else {
- GLboolean swap_uv = c->key.yuvtex_swap_mask & (1<<unit);
+ if (c->key.yuvtex_mask & (1 << unit)) {
+ /* convert ycbcr to RGBA */
+ GLboolean swap_uv = c->key.yuvtex_swap_mask & (1<<unit);
/*
CONST C0 = { -.5, -.0625, -.5, 1.164 }
@@ -676,22 +784,23 @@ static void precalc_tex( struct brw_wm_compile *c,
/* tmp = TEX ...
*/
- emit_op(c,
- OPCODE_TEX,
- tmp,
- inst->SaturateMode,
- unit,
- inst->TexSrcTarget,
- coord,
- src_undef(),
- src_undef());
+ emit_tex_op(c,
+ OPCODE_TEX,
+ tmp,
+ inst->SaturateMode,
+ unit,
+ inst->TexSrcTarget,
+ inst->TexShadow,
+ coord,
+ src_undef(),
+ src_undef());
/* tmp.xyz = ADD TMP, C0
*/
emit_op(c,
OPCODE_ADD,
dst_mask(tmp, WRITEMASK_XYZ),
- 0, 0, 0,
+ 0,
tmpsrc,
C0,
src_undef());
@@ -702,7 +811,7 @@ static void precalc_tex( struct brw_wm_compile *c,
emit_op(c,
OPCODE_MUL,
dst_mask(tmp, WRITEMASK_Y),
- 0, 0, 0,
+ 0,
tmpsrc,
src_swizzle1(C0, W),
src_undef());
@@ -717,7 +826,7 @@ static void precalc_tex( struct brw_wm_compile *c,
emit_op(c,
OPCODE_MAD,
dst_mask(dst, WRITEMASK_XYZ),
- 0, 0, 0,
+ 0,
swap_uv?src_swizzle(tmpsrc, Z,Z,X,X):src_swizzle(tmpsrc, X,X,Z,Z),
C1,
src_swizzle1(tmpsrc, Y));
@@ -727,13 +836,38 @@ static void precalc_tex( struct brw_wm_compile *c,
emit_op(c,
OPCODE_MAD,
dst_mask(dst, WRITEMASK_Y),
- 0, 0, 0,
+ 0,
src_swizzle1(tmpsrc, Z),
src_swizzle1(C1, W),
src_swizzle1(src_reg_from_dst(dst), Y));
release_temp(c, tmp);
}
+ else {
+ /* ordinary RGBA tex instruction */
+ emit_tex_op(c,
+ OPCODE_TEX,
+ inst->DstReg,
+ inst->SaturateMode,
+ unit,
+ inst->TexSrcTarget,
+ inst->TexShadow,
+ coord,
+ src_undef(),
+ src_undef());
+ }
+
+ /* For GL_EXT_texture_swizzle: */
+ if (c->key.tex_swizzles[unit] != SWIZZLE_NOOP) {
+ /* swizzle the result of the TEX instruction */
+ struct prog_src_register tmpsrc = src_reg_from_dst(inst->DstReg);
+ emit_op(c, OPCODE_SWZ,
+ inst->DstReg,
+ SATURATE_OFF, /* saturate already done above */
+ src_swizzle4(tmpsrc, c->key.tex_swizzles[unit]),
+ src_undef(),
+ src_undef());
+ }
if ((inst->TexSrcTarget == TEXTURE_RECT_INDEX) ||
(inst->TexSrcTarget == TEXTURE_CUBE_INDEX))
@@ -741,10 +875,16 @@ static void precalc_tex( struct brw_wm_compile *c,
}
+/**
+ * Check if the given TXP instruction really needs the divide-by-W step.
+ */
static GLboolean projtex( struct brw_wm_compile *c,
const struct prog_instruction *inst )
{
- struct prog_src_register src = inst->SrcReg[0];
+ const struct prog_src_register src = inst->SrcReg[0];
+ GLboolean retVal;
+
+ assert(inst->Opcode == OPCODE_TXP);
/* Only try to detect the simplest cases. Could detect (later)
* cases where we are trying to emit code like RCP {1.0}, MUL x,
@@ -754,16 +894,21 @@ static GLboolean projtex( struct brw_wm_compile *c,
* user-provided fragment programs anyway:
*/
if (inst->TexSrcTarget == TEXTURE_CUBE_INDEX)
- return 0; /* ut2004 gun rendering !?! */
+ retVal = GL_FALSE; /* ut2004 gun rendering !?! */
else if (src.File == PROGRAM_INPUT &&
GET_SWZ(src.Swizzle, W) == W &&
- (c->key.projtex_mask & (1<<(src.Index + FRAG_ATTRIB_WPOS - FRAG_ATTRIB_TEX0))) == 0)
- return 0;
+ (c->key.proj_attrib_mask & (1 << src.Index)) == 0)
+ retVal = GL_FALSE;
else
- return 1;
+ retVal = GL_TRUE;
+
+ return retVal;
}
+/**
+ * Emit code for TXP.
+ */
static void precalc_txp( struct brw_wm_compile *c,
const struct prog_instruction *inst )
{
@@ -778,7 +923,7 @@ static void precalc_txp( struct brw_wm_compile *c,
emit_op(c,
OPCODE_RCP,
dst_mask(tmp, WRITEMASK_W),
- 0, 0, 0,
+ 0,
src_swizzle1(src0, GET_SWZ(src0.Swizzle, W)),
src_undef(),
src_undef());
@@ -788,7 +933,7 @@ static void precalc_txp( struct brw_wm_compile *c,
emit_op(c,
OPCODE_MUL,
dst_mask(tmp, WRITEMASK_XYZ),
- 0, 0, 0,
+ 0,
src0,
src_swizzle1(src_reg_from_dst(tmp), W),
src_undef());
@@ -814,42 +959,41 @@ static void precalc_txp( struct brw_wm_compile *c,
static void emit_fb_write( struct brw_wm_compile *c )
{
struct prog_src_register payload_r0_depth = src_reg(PROGRAM_PAYLOAD, PAYLOAD_DEPTH);
- struct prog_src_register outdepth = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_DEPR);
+ struct prog_src_register outdepth = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_DEPTH);
struct prog_src_register outcolor;
GLuint i;
struct prog_instruction *inst, *last_inst;
struct brw_context *brw = c->func.brw;
- /* inst->Sampler is not used by backend,
- use it for fb write target and eot */
-
- if (brw->state.nr_draw_regions > 1) {
- for (i = 0 ; i < brw->state.nr_draw_regions; i++) {
- outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_DATA0 + i);
- last_inst = inst = emit_op(c,
- WM_FB_WRITE, dst_mask(dst_undef(),0), 0, 0, 0,
- outcolor, payload_r0_depth, outdepth);
- inst->Sampler = (i<<1);
- if (c->fp_fragcolor_emitted) {
- outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_COLR);
- last_inst = inst = emit_op(c, WM_FB_WRITE, dst_mask(dst_undef(),0),
- 0, 0, 0, outcolor, payload_r0_depth, outdepth);
- inst->Sampler = (i<<1);
- }
- }
- last_inst->Sampler |= 1; //eot
+ /* The inst->Aux field is used for FB write target and the EOT marker */
+
+ if (brw->state.nr_color_regions > 1) {
+ for (i = 0 ; i < brw->state.nr_color_regions; i++) {
+ outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_DATA0 + i);
+ last_inst = inst = emit_op(c,
+ WM_FB_WRITE, dst_mask(dst_undef(),0), 0,
+ outcolor, payload_r0_depth, outdepth);
+ inst->Aux = (i<<1);
+ if (c->fp_fragcolor_emitted) {
+ outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_COLOR);
+ last_inst = inst = emit_op(c, WM_FB_WRITE, dst_mask(dst_undef(),0),
+ 0, outcolor, payload_r0_depth, outdepth);
+ inst->Aux = (i<<1);
+ }
+ }
+ last_inst->Aux |= 1; //eot
}
else {
/* if gl_FragData[0] is written, use it, else use gl_FragColor */
if (c->fp->program.Base.OutputsWritten & (1 << FRAG_RESULT_DATA0))
outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_DATA0);
else
- outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_COLR);
+ outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_COLOR);
- inst = emit_op(c, WM_FB_WRITE, dst_mask(dst_undef(),0),
- 0, 0, 0, outcolor, payload_r0_depth, outdepth);
- inst->Sampler = 1|(0<<1);
+ inst = emit_op(c, WM_FB_WRITE, dst_mask(dst_undef(),0),
+ 0, outcolor, payload_r0_depth, outdepth);
+ inst->Aux = 1|(0<<1);
}
}
@@ -880,9 +1024,9 @@ static void validate_dst_regs( struct brw_wm_compile *c,
const struct prog_instruction *inst )
{
if (inst->DstReg.File == PROGRAM_OUTPUT) {
- GLuint idx = inst->DstReg.Index;
- if (idx == FRAG_RESULT_COLR)
- c->fp_fragcolor_emitted = 1;
+ GLuint idx = inst->DstReg.Index;
+ if (idx == FRAG_RESULT_COLOR)
+ c->fp_fragcolor_emitted = 1;
}
}
@@ -902,11 +1046,15 @@ static void print_insns( const struct prog_instruction *insn,
3);
}
else
- _mesa_printf("UNKNOWN\n");
-
+ _mesa_printf("965 Opcode %d\n", insn->Opcode);
}
}
+
+/**
+ * Initial pass for fragment program code generation.
+ * This function is used by both the GLSL and non-GLSL paths.
+ */
void brw_wm_pass_fp( struct brw_wm_compile *c )
{
struct brw_fragment_program *fp = c->fp;
@@ -922,16 +1070,21 @@ void brw_wm_pass_fp( struct brw_wm_compile *c )
c->delta_xy = src_undef();
c->pixel_w = src_undef();
c->nr_fp_insns = 0;
+ c->fp->tex_units_used = 0x0;
- /* Emit preamble instructions:
+ /* Emit preamble instructions. This is where special instructions such as
+ * WM_CINTERP, WM_LINTERP, WM_PINTERP and WM_WPOSXY are emitted to
+ * compute shader inputs from varying vars.
*/
-
-
for (insn = 0; insn < fp->program.Base.NumInstructions; insn++) {
const struct prog_instruction *inst = &fp->program.Base.Instructions[insn];
validate_src_regs(c, inst);
validate_dst_regs(c, inst);
}
+
+ /* Loop over all instructions doing assorted simplifications and
+ * transformations.
+ */
for (insn = 0; insn < fp->program.Base.NumInstructions; insn++) {
const struct prog_instruction *inst = &fp->program.Base.Instructions[insn];
struct prog_instruction *out;
@@ -940,7 +1093,6 @@ void brw_wm_pass_fp( struct brw_wm_compile *c )
* necessary:
*/
-
switch (inst->Opcode) {
case OPCODE_SWZ:
out = emit_insn(c, inst);
@@ -950,14 +1102,14 @@ void brw_wm_pass_fp( struct brw_wm_compile *c )
case OPCODE_ABS:
out = emit_insn(c, inst);
out->Opcode = OPCODE_MOV;
- out->SrcReg[0].NegateBase = 0;
+ out->SrcReg[0].Negate = NEGATE_NONE;
out->SrcReg[0].Abs = 1;
break;
case OPCODE_SUB:
out = emit_insn(c, inst);
out->Opcode = OPCODE_ADD;
- out->SrcReg[1].NegateBase ^= 0xf;
+ out->SrcReg[1].Negate ^= NEGATE_XYZW;
break;
case OPCODE_SCS:
@@ -986,6 +1138,7 @@ void brw_wm_pass_fp( struct brw_wm_compile *c )
case OPCODE_TXB:
out = emit_insn(c, inst);
out->TexSrcUnit = fp->program.Base.SamplerUnits[inst->TexSrcUnit];
+ assert(out->TexSrcUnit < BRW_MAX_TEX_UNIT);
break;
case OPCODE_XPD:
@@ -1001,28 +1154,24 @@ void brw_wm_pass_fp( struct brw_wm_compile *c )
*/
out->DstReg.WriteMask = 0;
break;
- case OPCODE_DDX:
- emit_ddx(c, inst);
- break;
- case OPCODE_DDY:
- emit_ddy(c, inst);
- break;
case OPCODE_END:
emit_fb_write(c);
break;
case OPCODE_PRINT:
break;
-
default:
- emit_insn(c, inst);
+ if (brw_wm_is_scalar_result(inst->Opcode))
+ emit_scalar_insn(c, inst);
+ else
+ emit_insn(c, inst);
break;
}
}
if (INTEL_DEBUG & DEBUG_WM) {
- _mesa_printf("pass_fp:\n");
- print_insns( c->prog_instructions, c->nr_fp_insns );
- _mesa_printf("\n");
+ _mesa_printf("pass_fp:\n");
+ print_insns( c->prog_instructions, c->nr_fp_insns );
+ _mesa_printf("\n");
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-29 11:30:22 +0000