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#ifndef _I915_PROGRAM_H
#define _I915_PROGRAM_H
#define REG_TYPE_R 0 /* temporary regs, no need to
* dcl, must be written before
* read -- Preserved between
* phases.
*/
#define REG_TYPE_T 1 /* Interpolated values, must be
* dcl'ed before use.
*
* 0..7: texture coord,
* 8: diffuse spec,
* 9: specular color,
* 10: fog parameter in w.
*/
#define REG_TYPE_CONST 2 /* Restriction: only one const
* can be referenced per
* instruction, though it may be
* selected for multiple inputs.
* Constants not initialized
* default to zero.
*/
#define REG_TYPE_S 3 /* sampler */
#define REG_TYPE_OC 4 /* output color (rgba) */
#define REG_TYPE_OD 5 /* output depth (w), xyz are
* temporaries. If not written,
* interpolated depth is used?
*/
#define REG_TYPE_U 6 /* unpreserved temporaries */
#define REG_TYPE_MASK 0x7
#define REG_NR_MASK 0xf
/* REG_TYPE_T:
*/
#define T_TEX0 0
#define T_TEX1 1
#define T_TEX2 2
#define T_TEX3 3
#define T_TEX4 4
#define T_TEX5 5
#define T_TEX6 6
#define T_TEX7 7
#define T_DIFFUSE 8
#define T_SPECULAR 9
#define T_FOG_W 10 /* interpolated fog is in W coord */
/* Arithmetic instructions */
/* .replicate_swizzle == selection and replication of a particular
* scalar channel, ie., .xxxx, .yyyy, .zzzz or .wwww
*/
#define A0_NOP (0x0<<24) /* no operation */
#define A0_ADD (0x1<<24) /* dst = src0 + src1 */
#define A0_MOV (0x2<<24) /* dst = src0 */
#define A0_MUL (0x3<<24) /* dst = src0 * src1 */
#define A0_MAD (0x4<<24) /* dst = src0 * src1 + src2 */
#define A0_DP2ADD (0x5<<24) /* dst.xyzw = src0.xy dot src1.xy + src2.replicate_swizzle */
#define A0_DP3 (0x6<<24) /* dst.xyzw = src0.xyz dot src1.xyz */
#define A0_DP4 (0x7<<24) /* dst.xyzw = src0.xyzw dot src1.xyzw */
#define A0_FRC (0x8<<24) /* dst = src0 - floor(src0) */
#define A0_RCP (0x9<<24) /* dst.xyzw = 1/(src0.replicate_swizzle) */
#define A0_RSQ (0xa<<24) /* dst.xyzw = 1/(sqrt(abs(src0.replicate_swizzle))) */
#define A0_EXP (0xb<<24) /* dst.xyzw = exp2(src0.replicate_swizzle) */
#define A0_LOG (0xc<<24) /* dst.xyzw = log2(abs(src0.replicate_swizzle)) */
#define A0_CMP (0xd<<24) /* dst = (src0 >= 0.0) ? src1 : src2 */
#define A0_MIN (0xe<<24) /* dst = (src0 < src1) ? src0 : src1 */
#define A0_MAX (0xf<<24) /* dst = (src0 >= src1) ? src0 : src1 */
#define A0_FLR (0x10<<24) /* dst = floor(src0) */
#define A0_MOD (0x11<<24) /* dst = src0 fmod 1.0 */
#define A0_TRC (0x12<<24) /* dst = int(src0) */
#define A0_SGE (0x13<<24) /* dst = src0 >= src1 ? 1.0 : 0.0 */
#define A0_SLT (0x14<<24) /* dst = src0 < src1 ? 1.0 : 0.0 */
#define A0_DEST_SATURATE (1<<22)
#define A0_DEST_TYPE_SHIFT 19
/* Allow: R, OC, OD, U */
#define A0_DEST_NR_SHIFT 14
/* Allow R: 0..15, OC,OD: 0..0, U: 0..2 */
#define A0_DEST_CHANNEL_X (1<<10)
#define A0_DEST_CHANNEL_Y (2<<10)
#define A0_DEST_CHANNEL_Z (4<<10)
#define A0_DEST_CHANNEL_W (8<<10)
#define A0_DEST_CHANNEL_ALL (0xf<<10)
#define A0_DEST_CHANNEL_SHIFT 10
#define A0_SRC0_TYPE_SHIFT 7
#define A0_SRC0_NR_SHIFT 2
#define A0_DEST_CHANNEL_XY (A0_DEST_CHANNEL_X|A0_DEST_CHANNEL_Y)
#define A0_DEST_CHANNEL_XYZ (A0_DEST_CHANNEL_XY|A0_DEST_CHANNEL_Z)
#define SRC_X 0
#define SRC_Y 1
#define SRC_Z 2
#define SRC_W 3
#define SRC_ZERO 4
#define SRC_ONE 5
#define A1_SRC0_CHANNEL_X_NEGATE (1<<31)
#define A1_SRC0_CHANNEL_X_SHIFT 28
#define A1_SRC0_CHANNEL_Y_NEGATE (1<<27)
#define A1_SRC0_CHANNEL_Y_SHIFT 24
#define A1_SRC0_CHANNEL_Z_NEGATE (1<<23)
#define A1_SRC0_CHANNEL_Z_SHIFT 20
#define A1_SRC0_CHANNEL_W_NEGATE (1<<19)
#define A1_SRC0_CHANNEL_W_SHIFT 16
#define A1_SRC1_TYPE_SHIFT 13
#define A1_SRC1_NR_SHIFT 8
#define A1_SRC1_CHANNEL_X_NEGATE (1<<7)
#define A1_SRC1_CHANNEL_X_SHIFT 4
#define A1_SRC1_CHANNEL_Y_NEGATE (1<<3)
#define A1_SRC1_CHANNEL_Y_SHIFT 0
#define A2_SRC1_CHANNEL_Z_NEGATE (1<<31)
#define A2_SRC1_CHANNEL_Z_SHIFT 28
#define A2_SRC1_CHANNEL_W_NEGATE (1<<27)
#define A2_SRC1_CHANNEL_W_SHIFT 24
#define A2_SRC2_TYPE_SHIFT 21
#define A2_SRC2_NR_SHIFT 16
#define A2_SRC2_CHANNEL_X_NEGATE (1<<15)
#define A2_SRC2_CHANNEL_X_SHIFT 12
#define A2_SRC2_CHANNEL_Y_NEGATE (1<<11)
#define A2_SRC2_CHANNEL_Y_SHIFT 8
#define A2_SRC2_CHANNEL_Z_NEGATE (1<<7)
#define A2_SRC2_CHANNEL_Z_SHIFT 4
#define A2_SRC2_CHANNEL_W_NEGATE (1<<3)
#define A2_SRC2_CHANNEL_W_SHIFT 0
/* Declaration instructions */
#define D0_DCL (0x19<<24) /* Declare a t (interpolated attrib)
* register or an s (sampler)
* register. */
#define D0_SAMPLE_TYPE_SHIFT 22
#define D0_SAMPLE_TYPE_2D (0x0<<22)
#define D0_SAMPLE_TYPE_CUBE (0x1<<22)
#define D0_SAMPLE_TYPE_VOLUME (0x2<<22)
#define D0_SAMPLE_TYPE_MASK (0x3<<22)
#define D0_TYPE_SHIFT 19
/* Allow: T, S */
#define D0_NR_SHIFT 14
/* Allow T: 0..10, S: 0..15 */
#define D0_CHANNEL_X (1<<10)
#define D0_CHANNEL_Y (2<<10)
#define D0_CHANNEL_Z (4<<10)
#define D0_CHANNEL_W (8<<10)
#define D0_CHANNEL_ALL (0xf<<10)
#define D0_CHANNEL_NONE (0<<10)
#define D0_CHANNEL_XY (D0_CHANNEL_X|D0_CHANNEL_Y)
#define D0_CHANNEL_XYZ (D0_CHANNEL_XY|D0_CHANNEL_Z)
/* I915 Errata: Do not allow (xz), (xw), (xzw) combinations for diffuse
* or specular declarations.
*
* For T dcls, only allow: (x), (xy), (xyz), (w), (xyzw)
*
* Must be zero for S (sampler) dcls
*/
#define D1_MBZ 0
#define D2_MBZ 0
/* Texture instructions */
#define T0_TEXLD (0x15<<24) /* Sample texture using predeclared
* sampler and address, and output
* filtered texel data to destination
* register */
#define T0_TEXLDP (0x16<<24) /* Same as texld but performs a
* perspective divide of the texture
* coordinate .xyz values by .w before
* sampling. */
#define T0_TEXLDB (0x17<<24) /* Same as texld but biases the
* computed LOD by w. Only S4.6 two's
* comp is used. This implies that a
* float to fixed conversion is
* done. */
#define T0_TEXKILL (0x18<<24) /* Does not perform a sampling
* operation. Simply kills the pixel
* if any channel of the address
* register is < 0.0. */
#define T0_DEST_TYPE_SHIFT 19
/* Allow: R, OC, OD, U */
/* Note: U (unpreserved) regs do not retain their values between
* phases (cannot be used for feedback)
*
* Note: oC and OD registers can only be used as the destination of a
* texture instruction once per phase (this is an implementation
* restriction).
*/
#define T0_DEST_NR_SHIFT 14
/* Allow R: 0..15, OC,OD: 0..0, U: 0..2 */
#define T0_SAMPLER_NR_SHIFT 0 /* This field ignored for TEXKILL */
#define T0_SAMPLER_NR_MASK (0xf<<0)
#define T1_ADDRESS_REG_TYPE_SHIFT 24 /* Reg to use as texture coord */
/* Allow R, T, OC, OD -- R, OC, OD are 'dependent' reads, new program phase */
#define T1_ADDRESS_REG_NR_SHIFT 17
#define T2_MBZ 0
/* Having zero and one in here makes the definition of swizzle a lot
* easier.
*/
#define UREG_TYPE_SHIFT 29
#define UREG_NR_SHIFT 24
#define UREG_CHANNEL_X_NEGATE_SHIFT 23
#define UREG_CHANNEL_X_SHIFT 20
#define UREG_CHANNEL_Y_NEGATE_SHIFT 19
#define UREG_CHANNEL_Y_SHIFT 16
#define UREG_CHANNEL_Z_NEGATE_SHIFT 15
#define UREG_CHANNEL_Z_SHIFT 12
#define UREG_CHANNEL_W_NEGATE_SHIFT 11
#define UREG_CHANNEL_W_SHIFT 8
#define UREG_CHANNEL_ZERO_NEGATE_MBZ 5
#define UREG_CHANNEL_ZERO_SHIFT 4
#define UREG_CHANNEL_ONE_NEGATE_MBZ 1
#define UREG_CHANNEL_ONE_SHIFT 0
#define UREG_BAD 0xffffffff /* not a valid ureg */
#define X SRC_X
#define Y SRC_Y
#define Z SRC_Z
#define W SRC_W
#define ZERO SRC_ZERO
#define ONE SRC_ONE
/* Construct a ureg:
*/
#define UREG(type, nr) (((type) << UREG_TYPE_SHIFT) | \
((nr) << UREG_NR_SHIFT) | \
(X << UREG_CHANNEL_X_SHIFT) | \
(Y << UREG_CHANNEL_Y_SHIFT) | \
(Z << UREG_CHANNEL_Z_SHIFT) | \
(W << UREG_CHANNEL_W_SHIFT) | \
(ZERO << UREG_CHANNEL_ZERO_SHIFT) | \
(ONE << UREG_CHANNEL_ONE_SHIFT))
#define GET_CHANNEL_SRC( reg, channel ) ((reg<<(channel*4)) & (0xf<<20))
#define CHANNEL_SRC( src, channel ) (src>>(channel*4))
#define GET_UREG_TYPE(reg) (((reg)>>UREG_TYPE_SHIFT)®_TYPE_MASK)
#define GET_UREG_NR(reg) (((reg)>>UREG_NR_SHIFT)®_NR_MASK)
#define UREG_XYZW_CHANNEL_MASK 0x00ffff00
#define A0_DEST(reg) (((reg) & UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
#define D0_DEST(reg) (((reg) & UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
#define T0_DEST(reg) (((reg) & UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
#define A0_SRC0(reg) (((reg) & UREG_MASK)>>UREG_A0_SRC0_SHIFT_LEFT)
#define A1_SRC0(reg) (((reg) & UREG_MASK)<<UREG_A1_SRC0_SHIFT_RIGHT)
#define A1_SRC1(reg) (((reg) & UREG_MASK)>>UREG_A1_SRC1_SHIFT_LEFT)
#define A2_SRC1(reg) (((reg) & UREG_MASK)<<UREG_A2_SRC1_SHIFT_RIGHT)
#define A2_SRC2(reg) (((reg) & UREG_MASK)>>UREG_A2_SRC2_SHIFT_LEFT)
/* These are special, and don't have swizzle/negate bits.
*/
#define T0_SAMPLER( reg ) (GET_UREG_NR(reg)<<T0_SAMPLER_NR_SHIFT)
#define T1_ADDRESS_REG( reg ) ((GET_UREG_NR(reg)<<T1_ADDRESS_REG_NR_SHIFT) | \
(GET_UREG_TYPE(reg)<<T1_ADDRESS_REG_TYPE_SHIFT))
/* Macros for translating UREG's into the various register fields used
* by the I915 programmable unit.
*/
#define UREG_A0_DEST_SHIFT_LEFT (UREG_TYPE_SHIFT - A0_DEST_TYPE_SHIFT)
#define UREG_A0_SRC0_SHIFT_LEFT (UREG_TYPE_SHIFT - A0_SRC0_TYPE_SHIFT)
#define UREG_A1_SRC0_SHIFT_RIGHT (A1_SRC0_CHANNEL_W_SHIFT - UREG_CHANNEL_W_SHIFT)
#define UREG_A1_SRC1_SHIFT_LEFT (UREG_TYPE_SHIFT - A1_SRC1_TYPE_SHIFT)
#define UREG_A2_SRC1_SHIFT_RIGHT (A2_SRC1_CHANNEL_W_SHIFT - UREG_CHANNEL_W_SHIFT)
#define UREG_A2_SRC2_SHIFT_LEFT (UREG_TYPE_SHIFT - A2_SRC2_TYPE_SHIFT)
#define UREG_MASK 0xffffff00
#define UREG_TYPE_NR_MASK ((REG_TYPE_MASK << UREG_TYPE_SHIFT) | \
(REG_NR_MASK << UREG_NR_SHIFT))
#endif
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