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fuchsia / third_party / mesa / a6f78d4eee85ccda42384ebfcc956bc8e6444c36 / . / src / mesa / drivers / dri / i915 / i915_fragprog.c
blob: 5cd6ea4de5190e1a213760f06f87e125d87f665e [file] [log] [blame]
/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "glheader.h"
#include "macros.h"
#include "enums.h"
#include "tnl/t_context.h"
#include "intel_batchbuffer.h"
#include "i915_reg.h"
#include "i915_context.h"
#include "i915_program.h"
#include "program_instruction.h"
#include "program.h"
/* 1, -1/3!, 1/5!, -1/7! */
static const GLfloat sin_constants[4] = { 1.0,
-1.0/(3*2*1),
1.0/(5*4*3*2*1),
-1.0/(7*6*5*4*3*2*1) };
/* 1, -1/2!, 1/4!, -1/6! */
static const GLfloat cos_constants[4] = { 1.0,
-1.0/(2*1),
1.0/(4*3*2*1),
-1.0/(6*5*4*3*2*1) };
/**
* Retrieve a ureg for the given source register. Will emit
* constants, apply swizzling and negation as needed.
*/
static GLuint src_vector( struct i915_fragment_program *p,
const struct prog_src_register *source,
const struct fragment_program *program )
{
GLuint src;
switch (source->File) {
/* Registers:
*/
case PROGRAM_TEMPORARY:
if (source->Index >= I915_MAX_TEMPORARY) {
i915_program_error( p, "Exceeded max temporary reg" );
return 0;
}
src = UREG( REG_TYPE_R, source->Index );
break;
case PROGRAM_INPUT:
switch (source->Index) {
case FRAG_ATTRIB_WPOS:
src = i915_emit_decl( p, REG_TYPE_T, p->wpos_tex, D0_CHANNEL_ALL );
break;
case FRAG_ATTRIB_COL0:
src = i915_emit_decl( p, REG_TYPE_T, T_DIFFUSE, D0_CHANNEL_ALL );
break;
case FRAG_ATTRIB_COL1:
src = i915_emit_decl( p, REG_TYPE_T, T_SPECULAR, D0_CHANNEL_XYZ );
src = swizzle( src, X, Y, Z, ONE );
break;
case FRAG_ATTRIB_FOGC:
src = i915_emit_decl( p, REG_TYPE_T, T_FOG_W, D0_CHANNEL_W );
src = swizzle( src, W, W, W, W );
break;
case FRAG_ATTRIB_TEX0:
case FRAG_ATTRIB_TEX1:
case FRAG_ATTRIB_TEX2:
case FRAG_ATTRIB_TEX3:
case FRAG_ATTRIB_TEX4:
case FRAG_ATTRIB_TEX5:
case FRAG_ATTRIB_TEX6:
case FRAG_ATTRIB_TEX7:
src = i915_emit_decl( p, REG_TYPE_T,
T_TEX0 + (source->Index - FRAG_ATTRIB_TEX0),
D0_CHANNEL_ALL );
break;
default:
i915_program_error( p, "Bad source->Index" );
return 0;
}
break;
/* Various paramters and env values. All emitted to
* hardware as program constants.
*/
case PROGRAM_LOCAL_PARAM:
src = i915_emit_param4fv(
p, program->Base.LocalParams[source->Index]);
break;
case PROGRAM_ENV_PARAM:
src = i915_emit_param4fv(
p, p->ctx->FragmentProgram.Parameters[source->Index]);
break;
case PROGRAM_STATE_VAR:
case PROGRAM_NAMED_PARAM:
src = i915_emit_param4fv(
p, program->Base.Parameters->ParameterValues[source->Index] );
break;
default:
i915_program_error( p, "Bad source->File" );
return 0;
}
src = swizzle(src,
GET_SWZ(source->Swizzle, 0),
GET_SWZ(source->Swizzle, 1),
GET_SWZ(source->Swizzle, 2),
GET_SWZ(source->Swizzle, 3));
if (source->NegateBase)
src = negate( src,
GET_BIT(source->NegateBase, 0),
GET_BIT(source->NegateBase, 1),
GET_BIT(source->NegateBase, 2),
GET_BIT(source->NegateBase, 3));
return src;
}
static GLuint get_result_vector( struct i915_fragment_program *p,
const struct prog_instruction *inst )
{
switch (inst->DstReg.File) {
case PROGRAM_OUTPUT:
switch (inst->DstReg.Index) {
case FRAG_RESULT_COLR:
return UREG(REG_TYPE_OC, 0);
case FRAG_RESULT_DEPR:
p->depth_written = 1;
return UREG(REG_TYPE_OD, 0);
default:
i915_program_error( p, "Bad inst->DstReg.Index" );
return 0;
}
case PROGRAM_TEMPORARY:
return UREG(REG_TYPE_R, inst->DstReg.Index);
default:
i915_program_error( p, "Bad inst->DstReg.File" );
return 0;
}
}
static GLuint get_result_flags( const struct prog_instruction *inst )
{
GLuint flags = 0;
if (inst->SaturateMode == SATURATE_ZERO_ONE) flags |= A0_DEST_SATURATE;
if (inst->DstReg.WriteMask & WRITEMASK_X) flags |= A0_DEST_CHANNEL_X;
if (inst->DstReg.WriteMask & WRITEMASK_Y) flags |= A0_DEST_CHANNEL_Y;
if (inst->DstReg.WriteMask & WRITEMASK_Z) flags |= A0_DEST_CHANNEL_Z;
if (inst->DstReg.WriteMask & WRITEMASK_W) flags |= A0_DEST_CHANNEL_W;
return flags;
}
static GLuint translate_tex_src_target( struct i915_fragment_program *p,
GLubyte bit )
{
switch (bit) {
case TEXTURE_1D_INDEX: return D0_SAMPLE_TYPE_2D;
case TEXTURE_2D_INDEX: return D0_SAMPLE_TYPE_2D;
case TEXTURE_RECT_INDEX: return D0_SAMPLE_TYPE_2D;
case TEXTURE_3D_INDEX: return D0_SAMPLE_TYPE_VOLUME;
case TEXTURE_CUBE_INDEX: return D0_SAMPLE_TYPE_CUBE;
default: i915_program_error(p, "TexSrcBit"); return 0;
}
}
#define EMIT_TEX( OP ) \
do { \
GLuint dim = translate_tex_src_target( p, inst->TexSrcTarget ); \
GLuint sampler = i915_emit_decl(p, REG_TYPE_S, \
inst->TexSrcUnit, dim); \
GLuint coord = src_vector( p, &inst->SrcReg[0], program); \
/* Texel lookup */ \
\
i915_emit_texld( p, \
get_result_vector( p, inst ), \
get_result_flags( inst ), \
sampler, \
coord, \
OP); \
} while (0)
#define EMIT_ARITH( OP, N ) \
do { \
i915_emit_arith( p, \
OP, \
get_result_vector( p, inst ), \
get_result_flags( inst ), 0, \
(N<1)?0:src_vector( p, &inst->SrcReg[0], program), \
(N<2)?0:src_vector( p, &inst->SrcReg[1], program), \
(N<3)?0:src_vector( p, &inst->SrcReg[2], program)); \
} while (0)
#define EMIT_1ARG_ARITH( OP ) EMIT_ARITH( OP, 1 )
#define EMIT_2ARG_ARITH( OP ) EMIT_ARITH( OP, 2 )
#define EMIT_3ARG_ARITH( OP ) EMIT_ARITH( OP, 3 )
/* Possible concerns:
*
* SIN, COS -- could use another taylor step?
* LIT -- results seem a little different to sw mesa
* LOG -- different to mesa on negative numbers, but this is conformant.
*
* Parse failures -- Mesa doesn't currently give a good indication
* internally whether a particular program string parsed or not. This
* can lead to confusion -- hopefully we cope with it ok now.
*
*/
static void upload_program( struct i915_fragment_program *p )
{
const struct fragment_program *program = p->ctx->FragmentProgram._Current;
const struct prog_instruction *inst = program->Base.Instructions;
/* _mesa_debug_fp_inst(program->Base.NumInstructions, inst); */
/* Is this a parse-failed program? Ensure a valid program is
* loaded, as the flagging of an error isn't sufficient to stop
* this being uploaded to hardware.
*/
if (inst[0].Opcode == OPCODE_END) {
GLuint tmp = i915_get_utemp( p );
i915_emit_arith( p,
A0_MOV,
UREG(REG_TYPE_OC, 0),
A0_DEST_CHANNEL_ALL, 0,
swizzle(tmp,ONE,ZERO,ONE,ONE), 0, 0);
return;
}
while (1) {
GLuint src0, src1, src2, flags;
GLuint tmp = 0;
switch (inst->Opcode) {
case OPCODE_ABS:
src0 = src_vector( p, &inst->SrcReg[0], program);
i915_emit_arith( p,
A0_MAX,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
src0, negate(src0, 1,1,1,1), 0);
break;
case OPCODE_ADD:
EMIT_2ARG_ARITH( A0_ADD );
break;
case OPCODE_CMP:
src0 = src_vector( p, &inst->SrcReg[0], program);
src1 = src_vector( p, &inst->SrcReg[1], program);
src2 = src_vector( p, &inst->SrcReg[2], program);
i915_emit_arith( p,
A0_CMP,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
src0, src2, src1); /* NOTE: order of src2, src1 */
break;
case OPCODE_COS:
src0 = src_vector( p, &inst->SrcReg[0], program);
tmp = i915_get_utemp( p );
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_X, 0,
src0,
i915_emit_const1f(p, 1.0/(M_PI * 2)),
0);
i915_emit_arith( p,
A0_MOD,
tmp, A0_DEST_CHANNEL_X, 0,
tmp,
0, 0 );
/* By choosing different taylor constants, could get rid of this mul:
*/
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_X, 0,
tmp,
i915_emit_const1f(p, (M_PI * 2)),
0);
/*
* t0.xy = MUL x.xx11, x.x1111 ; x^2, x, 1, 1
* t0 = MUL t0.xyxy t0.xx11 ; x^4, x^3, x^2, 1
* t0 = MUL t0.xxz1 t0.z111 ; x^6 x^4 x^2 1
* result = DP4 t0, cos_constants
*/
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_XY, 0,
swizzle(tmp, X,X,ONE,ONE),
swizzle(tmp, X,ONE,ONE,ONE), 0);
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_XYZ, 0,
swizzle(tmp, X,Y,X,ONE),
swizzle(tmp, X,X,ONE,ONE), 0);
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_XYZ, 0,
swizzle(tmp, X,X,Z,ONE),
swizzle(tmp, Z,ONE,ONE,ONE), 0);
i915_emit_arith( p,
A0_DP4,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
swizzle(tmp, ONE,Z,Y,X),
i915_emit_const4fv( p, cos_constants ), 0);
break;
case OPCODE_DP3:
EMIT_2ARG_ARITH( A0_DP3 );
break;
case OPCODE_DP4:
EMIT_2ARG_ARITH( A0_DP4 );
break;
case OPCODE_DPH:
src0 = src_vector( p, &inst->SrcReg[0], program);
src1 = src_vector( p, &inst->SrcReg[1], program);
i915_emit_arith( p,
A0_DP4,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
swizzle(src0, X,Y,Z,ONE), src1, 0);
break;
case OPCODE_DST:
src0 = src_vector( p, &inst->SrcReg[0], program);
src1 = src_vector( p, &inst->SrcReg[1], program);
/* result[0] = 1 * 1;
* result[1] = a[1] * b[1];
* result[2] = a[2] * 1;
* result[3] = 1 * b[3];
*/
i915_emit_arith( p,
A0_MUL,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
swizzle(src0, ONE, Y, Z, ONE),
swizzle(src1, ONE, Y, ONE, W ),
0);
break;
case OPCODE_EX2:
src0 = src_vector( p, &inst->SrcReg[0], program);
i915_emit_arith( p,
A0_EXP,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
swizzle(src0,X,X,X,X), 0, 0);
break;
case OPCODE_FLR:
EMIT_1ARG_ARITH( A0_FLR );
break;
case OPCODE_FRC:
EMIT_1ARG_ARITH( A0_FRC );
break;
case OPCODE_KIL:
src0 = src_vector( p, &inst->SrcReg[0], program);
tmp = i915_get_utemp( p );
i915_emit_texld( p,
tmp, A0_DEST_CHANNEL_ALL, /* use a dummy dest reg */
0,
src0,
T0_TEXKILL );
break;
case OPCODE_LG2:
src0 = src_vector( p, &inst->SrcReg[0], program);
i915_emit_arith( p,
A0_LOG,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
swizzle(src0,X,X,X,X), 0, 0);
break;
case OPCODE_LIT:
src0 = src_vector( p, &inst->SrcReg[0], program);
tmp = i915_get_utemp( p );
/* tmp = max( a.xyzw, a.00zw )
* XXX: Clamp tmp.w to -128..128
* tmp.y = log(tmp.y)
* tmp.y = tmp.w * tmp.y
* tmp.y = exp(tmp.y)
* result = cmp (a.11-x1, a.1x01, a.1xy1 )
*/
i915_emit_arith( p, A0_MAX, tmp, A0_DEST_CHANNEL_ALL, 0,
src0, swizzle(src0, ZERO, ZERO, Z, W), 0 );
i915_emit_arith( p, A0_LOG, tmp, A0_DEST_CHANNEL_Y, 0,
swizzle(tmp, Y, Y, Y, Y), 0, 0 );
i915_emit_arith( p, A0_MUL, tmp, A0_DEST_CHANNEL_Y, 0,
swizzle(tmp, ZERO, Y, ZERO, ZERO),
swizzle(tmp, ZERO, W, ZERO, ZERO), 0 );
i915_emit_arith( p, A0_EXP, tmp, A0_DEST_CHANNEL_Y, 0,
swizzle(tmp, Y, Y, Y, Y), 0, 0 );
i915_emit_arith( p, A0_CMP,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
negate(swizzle(tmp, ONE, ONE, X, ONE),0,0,1,0),
swizzle(tmp, ONE, X, ZERO, ONE),
swizzle(tmp, ONE, X, Y, ONE));
break;
case OPCODE_LRP:
src0 = src_vector( p, &inst->SrcReg[0], program);
src1 = src_vector( p, &inst->SrcReg[1], program);
src2 = src_vector( p, &inst->SrcReg[2], program);
flags = get_result_flags( inst );
tmp = i915_get_utemp( p );
/* b*a + c*(1-a)
*
* b*a + c - ca
*
* tmp = b*a + c,
* result = (-c)*a + tmp
*/
i915_emit_arith( p, A0_MAD, tmp,
flags & A0_DEST_CHANNEL_ALL, 0,
src1, src0, src2 );
i915_emit_arith( p, A0_MAD,
get_result_vector( p, inst ),
flags, 0,
negate(src2, 1,1,1,1), src0, tmp );
break;
case OPCODE_MAD:
EMIT_3ARG_ARITH( A0_MAD );
break;
case OPCODE_MAX:
EMIT_2ARG_ARITH( A0_MAX );
break;
case OPCODE_MIN:
src0 = src_vector( p, &inst->SrcReg[0], program);
src1 = src_vector( p, &inst->SrcReg[1], program);
tmp = i915_get_utemp( p );
flags = get_result_flags( inst );
i915_emit_arith( p,
A0_MAX,
tmp, flags & A0_DEST_CHANNEL_ALL, 0,
negate(src0,1,1,1,1),
negate(src1,1,1,1,1), 0);
i915_emit_arith( p,
A0_MOV,
get_result_vector( p, inst ),
flags, 0,
negate(tmp, 1,1,1,1), 0, 0);
break;
case OPCODE_MOV:
EMIT_1ARG_ARITH( A0_MOV );
break;
case OPCODE_MUL:
EMIT_2ARG_ARITH( A0_MUL );
break;
case OPCODE_POW:
src0 = src_vector( p, &inst->SrcReg[0], program);
src1 = src_vector( p, &inst->SrcReg[1], program);
tmp = i915_get_utemp( p );
flags = get_result_flags( inst );
/* XXX: masking on intermediate values, here and elsewhere.
*/
i915_emit_arith( p,
A0_LOG,
tmp, A0_DEST_CHANNEL_X, 0,
swizzle(src0,X,X,X,X), 0, 0);
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_X, 0,
tmp, src1, 0);
i915_emit_arith( p,
A0_EXP,
get_result_vector( p, inst ),
flags, 0,
swizzle(tmp,X,X,X,X), 0, 0);
break;
case OPCODE_RCP:
src0 = src_vector( p, &inst->SrcReg[0], program);
i915_emit_arith( p,
A0_RCP,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
swizzle(src0,X,X,X,X), 0, 0);
break;
case OPCODE_RSQ:
src0 = src_vector( p, &inst->SrcReg[0], program);
i915_emit_arith( p,
A0_RSQ,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
swizzle(src0,X,X,X,X), 0, 0);
break;
case OPCODE_SCS:
src0 = src_vector( p, &inst->SrcReg[0], program);
tmp = i915_get_utemp( p );
/*
* t0.xy = MUL x.xx11, x.x1111 ; x^2, x, 1, 1
* t0 = MUL t0.xyxy t0.xx11 ; x^4, x^3, x^2, x
* t1 = MUL t0.xyyw t0.yz11 ; x^7 x^5 x^3 x
* scs.x = DP4 t1, sin_constants
* t1 = MUL t0.xxz1 t0.z111 ; x^6 x^4 x^2 1
* scs.y = DP4 t1, cos_constants
*/
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_XY, 0,
swizzle(src0, X,X,ONE,ONE),
swizzle(src0, X,ONE,ONE,ONE), 0);
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_ALL, 0,
swizzle(tmp, X,Y,X,Y),
swizzle(tmp, X,X,ONE,ONE), 0);
if (inst->DstReg.WriteMask & WRITEMASK_Y) {
GLuint tmp1;
if (inst->DstReg.WriteMask & WRITEMASK_X)
tmp1 = i915_get_utemp( p );
else
tmp1 = tmp;
i915_emit_arith( p,
A0_MUL,
tmp1, A0_DEST_CHANNEL_ALL, 0,
swizzle(tmp, X,Y,Y,W),
swizzle(tmp, X,Z,ONE,ONE), 0);
i915_emit_arith( p,
A0_DP4,
get_result_vector( p, inst ),
A0_DEST_CHANNEL_Y, 0,
swizzle(tmp1, W,Z,Y,X),
i915_emit_const4fv( p, sin_constants ), 0);
}
if (inst->DstReg.WriteMask & WRITEMASK_X) {
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_XYZ, 0,
swizzle(tmp, X,X,Z,ONE),
swizzle(tmp, Z,ONE,ONE,ONE), 0);
i915_emit_arith( p,
A0_DP4,
get_result_vector( p, inst ),
A0_DEST_CHANNEL_X, 0,
swizzle(tmp, ONE,Z,Y,X),
i915_emit_const4fv( p, cos_constants ), 0);
}
break;
case OPCODE_SGE:
EMIT_2ARG_ARITH( A0_SGE );
break;
case OPCODE_SIN:
src0 = src_vector( p, &inst->SrcReg[0], program);
tmp = i915_get_utemp( p );
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_X, 0,
src0,
i915_emit_const1f(p, 1.0/(M_PI * 2)),
0);
i915_emit_arith( p,
A0_MOD,
tmp, A0_DEST_CHANNEL_X, 0,
tmp,
0, 0 );
/* By choosing different taylor constants, could get rid of this mul:
*/
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_X, 0,
tmp,
i915_emit_const1f(p, (M_PI * 2)),
0);
/*
* t0.xy = MUL x.xx11, x.x1111 ; x^2, x, 1, 1
* t0 = MUL t0.xyxy t0.xx11 ; x^4, x^3, x^2, x
* t1 = MUL t0.xyyw t0.yz11 ; x^7 x^5 x^3 x
* result = DP4 t1.wzyx, sin_constants
*/
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_XY, 0,
swizzle(tmp, X,X,ONE,ONE),
swizzle(tmp, X,ONE,ONE,ONE), 0);
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_ALL, 0,
swizzle(tmp, X,Y,X,Y),
swizzle(tmp, X,X,ONE,ONE), 0);
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_ALL, 0,
swizzle(tmp, X,Y,Y,W),
swizzle(tmp, X,Z,ONE,ONE), 0);
i915_emit_arith( p,
A0_DP4,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
swizzle(tmp, W, Z, Y, X ),
i915_emit_const4fv( p, sin_constants ), 0);
break;
case OPCODE_SLT:
EMIT_2ARG_ARITH( A0_SLT );
break;
case OPCODE_SUB:
src0 = src_vector( p, &inst->SrcReg[0], program);
src1 = src_vector( p, &inst->SrcReg[1], program);
i915_emit_arith( p,
A0_ADD,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
src0, negate(src1, 1,1,1,1), 0);
break;
case OPCODE_SWZ:
EMIT_1ARG_ARITH( A0_MOV ); /* extended swizzle handled natively */
break;
case OPCODE_TEX:
EMIT_TEX( T0_TEXLD );
break;
case OPCODE_TXB:
EMIT_TEX( T0_TEXLDB );
break;
case OPCODE_TXP:
EMIT_TEX( T0_TEXLDP );
break;
case OPCODE_XPD:
/* Cross product:
* result.x = src0.y * src1.z - src0.z * src1.y;
* result.y = src0.z * src1.x - src0.x * src1.z;
* result.z = src0.x * src1.y - src0.y * src1.x;
* result.w = undef;
*/
src0 = src_vector( p, &inst->SrcReg[0], program);
src1 = src_vector( p, &inst->SrcReg[1], program);
tmp = i915_get_utemp( p );
i915_emit_arith( p,
A0_MUL,
tmp, A0_DEST_CHANNEL_ALL, 0,
swizzle(src0,Z,X,Y,ONE),
swizzle(src1,Y,Z,X,ONE), 0);
i915_emit_arith( p,
A0_MAD,
get_result_vector( p, inst ),
get_result_flags( inst ), 0,
swizzle(src0,Y,Z,X,ONE),
swizzle(src1,Z,X,Y,ONE),
negate(tmp,1,1,1,0));
break;
case OPCODE_END:
return;
default:
i915_program_error( p, "bad opcode" );
return;
}
inst++;
i915_release_utemps( p );
}
}
/* Rather than trying to intercept and jiggle depth writes during
* emit, just move the value into its correct position at the end of
* the program:
*/
static void fixup_depth_write( struct i915_fragment_program *p )
{
if (p->depth_written) {
GLuint depth = UREG(REG_TYPE_OD, 0);
i915_emit_arith( p,
A0_MOV,
depth, A0_DEST_CHANNEL_W, 0,
swizzle(depth,X,Y,Z,Z),
0, 0);
}
}
#define FRAG_BIT_TEX(n) (FRAG_BIT_TEX0 << (n))
static void check_wpos( struct i915_fragment_program *p )
{
GLuint inputs = p->FragProg.Base.InputsRead;
GLint i;
p->wpos_tex = -1;
for (i = 0; i < p->ctx->Const.MaxTextureCoordUnits; i++) {
if (inputs & FRAG_BIT_TEX(i))
continue;
else if (inputs & FRAG_BIT_WPOS) {
p->wpos_tex = i;
inputs &= ~FRAG_BIT_WPOS;
}
}
if (inputs & FRAG_BIT_WPOS) {
i915_program_error(p, "No free texcoord for wpos value");
}
}
static void translate_program( struct i915_fragment_program *p )
{
i915ContextPtr i915 = I915_CONTEXT(p->ctx);
i915_init_program( i915, p );
check_wpos( p );
upload_program( p );
fixup_depth_write( p );
i915_fini_program( p );
p->translated = 1;
}
static void track_params( struct i915_fragment_program *p )
{
GLint i;
if (p->nr_params)
_mesa_load_state_parameters(p->ctx, p->FragProg.Base.Parameters);
for (i = 0; i < p->nr_params; i++) {
GLint reg = p->param[i].reg;
COPY_4V( p->constant[reg], p->param[i].values );
}
p->params_uptodate = 1;
p->on_hardware = 0; /* overkill */
}
static void i915BindProgram( GLcontext *ctx,
GLenum target,
struct program *prog )
{
if (target == GL_FRAGMENT_PROGRAM_ARB) {
i915ContextPtr i915 = I915_CONTEXT(ctx);
struct i915_fragment_program *p = (struct i915_fragment_program *)prog;
if (i915->current_program == p)
return;
if (i915->current_program) {
i915->current_program->on_hardware = 0;
i915->current_program->params_uptodate = 0;
}
i915->current_program = p;
assert(p->on_hardware == 0);
assert(p->params_uptodate == 0);
/* Hack: make sure fog is correctly enabled according to this
* fragment program's fog options.
*/
ctx->Driver.Enable( ctx, GL_FRAGMENT_PROGRAM_ARB,
ctx->FragmentProgram.Enabled );
}
}
static struct program *i915NewProgram( GLcontext *ctx,
GLenum target,
GLuint id )
{
switch (target) {
case GL_VERTEX_PROGRAM_ARB:
return _mesa_init_vertex_program( ctx, CALLOC_STRUCT(vertex_program),
target, id );
case GL_FRAGMENT_PROGRAM_ARB: {
struct i915_fragment_program *prog = CALLOC_STRUCT(i915_fragment_program);
if (prog) {
i915_init_program( I915_CONTEXT(ctx), prog );
return _mesa_init_fragment_program( ctx, &prog->FragProg,
target, id );
}
else
return NULL;
}
default:
/* Just fallback:
*/
return _mesa_new_program( ctx, target, id );
}
}
static void i915DeleteProgram( GLcontext *ctx,
struct program *prog )
{
if (prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
i915ContextPtr i915 = I915_CONTEXT(ctx);
struct i915_fragment_program *p = (struct i915_fragment_program *)prog;
if (i915->current_program == p)
i915->current_program = 0;
}
_mesa_delete_program( ctx, prog );
}
static GLboolean i915IsProgramNative( GLcontext *ctx,
GLenum target,
struct program *prog )
{
if (target == GL_FRAGMENT_PROGRAM_ARB) {
struct i915_fragment_program *p = (struct i915_fragment_program *)prog;
if (!p->translated)
translate_program( p );
return !p->error;
}
else
return GL_TRUE;
}
static void i915ProgramStringNotify( GLcontext *ctx,
GLenum target,
struct program *prog )
{
if (target == GL_FRAGMENT_PROGRAM_ARB) {
struct i915_fragment_program *p = (struct i915_fragment_program *)prog;
p->translated = 0;
/* Hack: make sure fog is correctly enabled according to this
* fragment program's fog options.
*/
ctx->Driver.Enable( ctx, GL_FRAGMENT_PROGRAM_ARB,
ctx->FragmentProgram.Enabled );
}
}
void i915ValidateFragmentProgram( i915ContextPtr i915 )
{
GLcontext *ctx = &i915->intel.ctx;
intelContextPtr intel = INTEL_CONTEXT(ctx);
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct vertex_buffer *VB = &tnl->vb;
struct i915_fragment_program *p =
(struct i915_fragment_program *)ctx->FragmentProgram._Current;
const GLuint inputsRead = p->FragProg.Base.InputsRead;
GLuint s4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_VFMT_MASK;
GLuint s2 = S2_TEXCOORD_NONE;
int i, offset = 0;
/* Important:
*/
VB->AttribPtr[VERT_ATTRIB_POS] = VB->NdcPtr;
if (!p->translated)
translate_program( p );
intel->vertex_attr_count = 0;
intel->wpos_offset = 0;
intel->wpos_size = 0;
intel->coloroffset = 0;
intel->specoffset = 0;
if (inputsRead & FRAG_BITS_TEX_ANY) {
EMIT_ATTR( _TNL_ATTRIB_POS, EMIT_4F_VIEWPORT, S4_VFMT_XYZW, 16 );
}
else {
EMIT_ATTR( _TNL_ATTRIB_POS, EMIT_3F_VIEWPORT, S4_VFMT_XYZ, 12 );
}
if (inputsRead & FRAG_BIT_COL0) {
intel->coloroffset = offset / 4;
EMIT_ATTR( _TNL_ATTRIB_COLOR0, EMIT_4UB_4F_BGRA, S4_VFMT_COLOR, 4 );
}
if ((inputsRead & (FRAG_BIT_COL1|FRAG_BIT_FOGC)) ||
i915->vertex_fog != I915_FOG_NONE) {
if (inputsRead & FRAG_BIT_COL1) {
intel->specoffset = offset / 4;
EMIT_ATTR( _TNL_ATTRIB_COLOR1, EMIT_3UB_3F_BGR, S4_VFMT_SPEC_FOG, 3 );
}
else
EMIT_PAD(3);
if ((inputsRead & FRAG_BIT_FOGC) || i915->vertex_fog != I915_FOG_NONE)
EMIT_ATTR( _TNL_ATTRIB_FOG, EMIT_1UB_1F, S4_VFMT_SPEC_FOG, 1 );
else
EMIT_PAD( 1 );
}
#if 0
if ((inputsRead & FRAG_BIT_FOGC) || i915->vertex_fog != I915_FOG_NONE) {
EMIT_ATTR( _TNL_ATTRIB_FOG, EMIT_1F, S4_VFMT_FOG_PARAM, 4 );
}
#endif
for (i = 0; i < p->ctx->Const.MaxTextureCoordUnits; i++) {
if (inputsRead & FRAG_BIT_TEX(i)) {
int sz = VB->TexCoordPtr[i]->size;
s2 &= ~S2_TEXCOORD_FMT(i, S2_TEXCOORD_FMT0_MASK);
s2 |= S2_TEXCOORD_FMT(i, SZ_TO_HW(sz));
EMIT_ATTR( _TNL_ATTRIB_TEX0+i, EMIT_SZ(sz), 0, sz * 4 );
}
else if (i == p->wpos_tex) {
/* If WPOS is required, duplicate the XYZ position data in an
* unused texture coordinate:
*/
s2 &= ~S2_TEXCOORD_FMT(i, S2_TEXCOORD_FMT0_MASK);
s2 |= S2_TEXCOORD_FMT(i, SZ_TO_HW(3));
intel->wpos_offset = offset;
intel->wpos_size = 3 * sizeof(GLuint);
EMIT_PAD( intel->wpos_size );
}
}
if (s2 != i915->state.Ctx[I915_CTXREG_LIS2] ||
s4 != i915->state.Ctx[I915_CTXREG_LIS4]) {
I915_STATECHANGE( i915, I915_UPLOAD_CTX );
/* Must do this *after* statechange, so as not to affect
* buffered vertices reliant on the old state:
*/
intel->vertex_size = _tnl_install_attrs( &intel->ctx,
intel->vertex_attrs,
intel->vertex_attr_count,
intel->ViewportMatrix.m, 0 );
intel->vertex_size >>= 2;
i915->state.Ctx[I915_CTXREG_LIS2] = s2;
i915->state.Ctx[I915_CTXREG_LIS4] = s4;
assert(intel->vtbl.check_vertex_size( intel, intel->vertex_size ));
}
if (!p->params_uptodate)
track_params( p );
if (!p->on_hardware)
i915_upload_program( i915, p );
}
void i915InitFragProgFuncs( struct dd_function_table *functions )
{
functions->BindProgram = i915BindProgram;
functions->NewProgram = i915NewProgram;
functions->DeleteProgram = i915DeleteProgram;
functions->IsProgramNative = i915IsProgramNative;
functions->ProgramStringNotify = i915ProgramStringNotify;
}