#include "i915_reg.h"
#include "i915_context.h"
#include "i915_fpc.h"
+#include "util/u_math.h"
#define A0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
(REG_NR_MASK << UREG_NR_SHIFT))
-#define I915_CONSTFLAG_PARAM 0x1f
-
uint
i915_get_temp(struct i915_fp_compile *p)
{
}
p->temp_flag |= 1 << (bit - 1);
- return UREG(REG_TYPE_R, (bit - 1));
+ return bit - 1;
+}
+
+
+static void
+i915_release_temp(struct i915_fp_compile *p, int reg)
+{
+ p->temp_flag &= ~(1 << reg);
}
+/**
+ * Get unpreserved temporary, a temp whose value is not preserved between
+ * PS program phases.
+ */
uint
i915_get_utemp(struct i915_fp_compile * p)
{
return dest;
}
+
+/**
+ * Emit a texture load or texkill instruction.
+ * \param dest the dest i915 register
+ * \param destmask the dest register writemask
+ * \param sampler the i915 sampler register
+ * \param coord the i915 source texcoord operand
+ * \param opcode the instruction opcode
+ */
uint i915_emit_texld( struct i915_fp_compile *p,
uint dest,
uint destmask,
uint sampler,
uint coord,
- uint op )
+ uint opcode )
{
- uint k = UREG(GET_UREG_TYPE(coord), GET_UREG_NR(coord));
+ const uint k = UREG(GET_UREG_TYPE(coord), GET_UREG_NR(coord));
+ int temp = -1;
+
if (coord != k) {
- /* No real way to work around this in the general case - need to
- * allocate and declare a new temporary register (a utemp won't
- * do). Will fallback for now.
+ /* texcoord is swizzled or negated. Need to allocate a new temporary
+ * register (a utemp / unpreserved temp) won't do.
*/
- i915_program_error(p, "Can't (yet) swizzle TEX arguments");
- assert(0);
- return 0;
+ uint tempReg;
+
+ temp = i915_get_temp(p); /* get temp reg index */
+ tempReg = UREG(REG_TYPE_R, temp); /* make i915 register */
+
+ i915_emit_arith( p, A0_MOV,
+ tempReg, A0_DEST_CHANNEL_ALL, /* dest reg, writemask */
+ 0, /* saturate */
+ coord, 0, 0 ); /* src0, src1, src2 */
+
+ /* new src texcoord is tempReg */
+ coord = tempReg;
}
/* Don't worry about saturate as we only support
*/
if (destmask != A0_DEST_CHANNEL_ALL) {
+ /* if not writing to XYZW... */
uint tmp = i915_get_utemp(p);
- i915_emit_texld( p, tmp, A0_DEST_CHANNEL_ALL, sampler, coord, op );
+ i915_emit_texld( p, tmp, A0_DEST_CHANNEL_ALL, sampler, coord, opcode );
i915_emit_arith( p, A0_MOV, dest, destmask, 0, tmp, 0, 0 );
- return dest;
+ /* XXX release utemp here? */
}
else {
assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST);
assert(dest = UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest)));
+ /* is the sampler coord a texcoord input reg? */
if (GET_UREG_TYPE(coord) != REG_TYPE_T) {
p->nr_tex_indirect++;
}
- *(p->csr++) = (op |
+ *(p->csr++) = (opcode |
T0_DEST( dest ) |
T0_SAMPLER( sampler ));
*(p->csr++) = T2_MBZ;
p->nr_tex_insn++;
- return dest;
}
+
+ if (temp >= 0)
+ i915_release_temp(p, temp);
+
+ return dest;
}
uint
i915_emit_const1f(struct i915_fp_compile * p, float c0)
{
+ struct i915_fragment_shader *ifs = p->shader;
unsigned reg, idx;
if (c0 == 0.0)
return swizzle(UREG(REG_TYPE_R, 0), ONE, ONE, ONE, ONE);
for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
- if (p->constant_flags[reg] == I915_CONSTFLAG_PARAM)
+ if (ifs->constant_flags[reg] == I915_CONSTFLAG_USER)
continue;
for (idx = 0; idx < 4; idx++) {
- if (!(p->constant_flags[reg] & (1 << idx)) ||
- p->constants[reg][idx] == c0) {
- p->constants[reg][idx] = c0;
- p->constant_flags[reg] |= 1 << idx;
- if (reg + 1 > p->num_constants)
- p->num_constants = reg + 1;
+ if (!(ifs->constant_flags[reg] & (1 << idx)) ||
+ ifs->constants[reg][idx] == c0) {
+ ifs->constants[reg][idx] = c0;
+ ifs->constant_flags[reg] |= 1 << idx;
+ if (reg + 1 > ifs->num_constants)
+ ifs->num_constants = reg + 1;
return swizzle(UREG(REG_TYPE_CONST, reg), idx, ZERO, ZERO, ONE);
}
}
uint
i915_emit_const2f(struct i915_fp_compile * p, float c0, float c1)
{
+ struct i915_fragment_shader *ifs = p->shader;
unsigned reg, idx;
if (c0 == 0.0)
return swizzle(i915_emit_const1f(p, c0), X, ONE, Z, W);
for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
- if (p->constant_flags[reg] == 0xf ||
- p->constant_flags[reg] == I915_CONSTFLAG_PARAM)
+ if (ifs->constant_flags[reg] == 0xf ||
+ ifs->constant_flags[reg] == I915_CONSTFLAG_USER)
continue;
for (idx = 0; idx < 3; idx++) {
- if (!(p->constant_flags[reg] & (3 << idx))) {
- p->constants[reg][idx + 0] = c0;
- p->constants[reg][idx + 1] = c1;
- p->constant_flags[reg] |= 3 << idx;
- if (reg + 1 > p->num_constants)
- p->num_constants = reg + 1;
+ if (!(ifs->constant_flags[reg] & (3 << idx))) {
+ ifs->constants[reg][idx + 0] = c0;
+ ifs->constants[reg][idx + 1] = c1;
+ ifs->constant_flags[reg] |= 3 << idx;
+ if (reg + 1 > ifs->num_constants)
+ ifs->num_constants = reg + 1;
return swizzle(UREG(REG_TYPE_CONST, reg), idx, idx + 1, ZERO, ONE);
}
}
i915_emit_const4f(struct i915_fp_compile * p,
float c0, float c1, float c2, float c3)
{
+ struct i915_fragment_shader *ifs = p->shader;
unsigned reg;
for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
- if (p->constant_flags[reg] == 0xf &&
- p->constants[reg][0] == c0 &&
- p->constants[reg][1] == c1 &&
- p->constants[reg][2] == c2 &&
- p->constants[reg][3] == c3) {
+ if (ifs->constant_flags[reg] == 0xf &&
+ ifs->constants[reg][0] == c0 &&
+ ifs->constants[reg][1] == c1 &&
+ ifs->constants[reg][2] == c2 &&
+ ifs->constants[reg][3] == c3) {
return UREG(REG_TYPE_CONST, reg);
}
- else if (p->constant_flags[reg] == 0) {
-
- p->constants[reg][0] = c0;
- p->constants[reg][1] = c1;
- p->constants[reg][2] = c2;
- p->constants[reg][3] = c3;
- p->constant_flags[reg] = 0xf;
- if (reg + 1 > p->num_constants)
- p->num_constants = reg + 1;
+ else if (ifs->constant_flags[reg] == 0) {
+
+ ifs->constants[reg][0] = c0;
+ ifs->constants[reg][1] = c1;
+ ifs->constants[reg][2] = c2;
+ ifs->constants[reg][3] = c3;
+ ifs->constant_flags[reg] = 0xf;
+ if (reg + 1 > ifs->num_constants)
+ ifs->num_constants = reg + 1;
return UREG(REG_TYPE_CONST, reg);
}
}
{
return i915_emit_const4f(p, c[0], c[1], c[2], c[3]);
}
-
-
-#if 00000/*UNUSED*/
-/* Reserve a slot in the constant file for a Mesa state parameter.
- * These will later need to be tracked on statechanges, but that is
- * done elsewhere.
- */
-uint
-i915_emit_param4fv(struct i915_fp_compile * p, const float * values)
-{
- struct i915_fragment_program *fp = p->fp;
- int i;
-
- for (i = 0; i < fp->nr_params; i++) {
- if (fp->param[i].values == values)
- return UREG(REG_TYPE_CONST, fp->param[i].reg);
- }
-
- if (p->constants->nr_constants == I915_MAX_CONSTANT ||
- fp->nr_params == I915_MAX_CONSTANT) {
- i915_program_error(p, "i915_emit_param4fv: out of constants\n");
- return 0;
- }
-
- {
- int reg = p->constants->nr_constants++;
- int i = fp->nr_params++;
-
- assert (p->constant_flags[reg] == 0);
- p->constant_flags[reg] = I915_CONSTFLAG_PARAM;
-
- fp->param[i].values = values;
- fp->param[i].reg = reg;
-
- return UREG(REG_TYPE_CONST, reg);
- }
-}
-#endif
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