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/**************************************************************************
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* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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**************************************************************************/
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#include "tnl/t_context.h"
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#include "intel_batchbuffer.h"
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#include "i915_context.h"
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#include "i915_program.h"
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#define A0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
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#define D0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
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#define T0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
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#define A0_SRC0( reg ) (((reg)&UREG_MASK)>>UREG_A0_SRC0_SHIFT_LEFT)
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#define A1_SRC0( reg ) (((reg)&UREG_MASK)<<UREG_A1_SRC0_SHIFT_RIGHT)
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#define A1_SRC1( reg ) (((reg)&UREG_MASK)>>UREG_A1_SRC1_SHIFT_LEFT)
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#define A2_SRC1( reg ) (((reg)&UREG_MASK)<<UREG_A2_SRC1_SHIFT_RIGHT)
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#define A2_SRC2( reg ) (((reg)&UREG_MASK)>>UREG_A2_SRC2_SHIFT_LEFT)
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/* These are special, and don't have swizzle/negate bits.
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#define T0_SAMPLER( reg ) (GET_UREG_NR(reg)<<T0_SAMPLER_NR_SHIFT)
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#define T1_ADDRESS_REG( reg ) ((GET_UREG_NR(reg)<<T1_ADDRESS_REG_NR_SHIFT) | \
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(GET_UREG_TYPE(reg)<<T1_ADDRESS_REG_TYPE_SHIFT))
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/* Macros for translating UREG's into the various register fields used
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* by the I915 programmable unit.
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#define UREG_A0_DEST_SHIFT_LEFT (UREG_TYPE_SHIFT - A0_DEST_TYPE_SHIFT)
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#define UREG_A0_SRC0_SHIFT_LEFT (UREG_TYPE_SHIFT - A0_SRC0_TYPE_SHIFT)
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#define UREG_A1_SRC0_SHIFT_RIGHT (A1_SRC0_CHANNEL_W_SHIFT - UREG_CHANNEL_W_SHIFT)
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#define UREG_A1_SRC1_SHIFT_LEFT (UREG_TYPE_SHIFT - A1_SRC1_TYPE_SHIFT)
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#define UREG_A2_SRC1_SHIFT_RIGHT (A2_SRC1_CHANNEL_W_SHIFT - UREG_CHANNEL_W_SHIFT)
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#define UREG_A2_SRC2_SHIFT_LEFT (UREG_TYPE_SHIFT - A2_SRC2_TYPE_SHIFT)
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#define UREG_MASK 0xffffff00
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#define UREG_TYPE_NR_MASK ((REG_TYPE_MASK << UREG_TYPE_SHIFT) | \
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(REG_NR_MASK << UREG_NR_SHIFT))
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#define I915_CONSTFLAG_PARAM 0x1f
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i915_get_temp(struct i915_fragment_program *p)
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int bit = ffs(~p->temp_flag);
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fprintf(stderr, "%s: out of temporaries\n", __FILE__);
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p->temp_flag |= 1 << (bit - 1);
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return UREG(REG_TYPE_R, (bit - 1));
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i915_get_utemp(struct i915_fragment_program * p)
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int bit = ffs(~p->utemp_flag);
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fprintf(stderr, "%s: out of temporaries\n", __FILE__);
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p->utemp_flag |= 1 << (bit - 1);
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return UREG(REG_TYPE_U, (bit - 1));
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i915_release_utemps(struct i915_fragment_program *p)
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p->utemp_flag = ~0x7;
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i915_emit_decl(struct i915_fragment_program *p,
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GLuint type, GLuint nr, GLuint d0_flags)
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GLuint reg = UREG(type, nr);
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if (type == REG_TYPE_T) {
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if (p->decl_t & (1 << nr))
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p->decl_t |= (1 << nr);
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else if (type == REG_TYPE_S) {
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if (p->decl_s & (1 << nr))
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p->decl_s |= (1 << nr);
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*(p->decl++) = (D0_DCL | D0_DEST(reg) | d0_flags);
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*(p->decl++) = D1_MBZ;
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*(p->decl++) = D2_MBZ;
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i915_emit_arith(struct i915_fragment_program * p,
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GLuint saturate, GLuint src0, GLuint src1, GLuint src2)
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assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST);
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dest = UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest));
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if (GET_UREG_TYPE(src0) == REG_TYPE_CONST)
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if (GET_UREG_TYPE(src1) == REG_TYPE_CONST)
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if (GET_UREG_TYPE(src2) == REG_TYPE_CONST)
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/* Recursively call this function to MOV additional const values
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* into temporary registers. Use utemp registers for this -
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* currently shouldn't be possible to run out, but keep an eye on
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GLuint s[3], first, i, old_utemp_flag;
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old_utemp_flag = p->utemp_flag;
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first = GET_UREG_NR(s[c[0]]);
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for (i = 1; i < nr_const; i++) {
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if (GET_UREG_NR(s[c[i]]) != first) {
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GLuint tmp = i915_get_utemp(p);
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i915_emit_arith(p, A0_MOV, tmp, A0_DEST_CHANNEL_ALL, 0,
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p->utemp_flag = old_utemp_flag; /* restore */
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*(p->csr++) = (op | A0_DEST(dest) | mask | saturate | A0_SRC0(src0));
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*(p->csr++) = (A1_SRC0(src0) | A1_SRC1(src1));
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*(p->csr++) = (A2_SRC1(src1) | A2_SRC2(src2));
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GLuint i915_emit_texld( struct i915_fragment_program *p,
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if (coord != UREG(GET_UREG_TYPE(coord), GET_UREG_NR(coord))) {
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/* No real way to work around this in the general case - need to
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* allocate and declare a new temporary register (a utemp won't
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* do). Will fallback for now.
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i915_program_error(p, "Can't (yet) swizzle TEX arguments");
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/* Don't worry about saturate as we only support
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if (destmask != A0_DEST_CHANNEL_ALL) {
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GLuint tmp = i915_get_utemp(p);
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i915_emit_texld( p, tmp, A0_DEST_CHANNEL_ALL, sampler, coord, op );
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i915_emit_arith( p, A0_MOV, dest, destmask, 0, tmp, 0, 0 );
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assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST);
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assert(dest = UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest)));
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if (GET_UREG_TYPE(coord) != REG_TYPE_T) {
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p->nr_tex_indirect++;
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T0_SAMPLER( sampler ));
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*(p->csr++) = T1_ADDRESS_REG( coord );
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*(p->csr++) = T2_MBZ;
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i915_emit_const1f(struct i915_fragment_program * p, GLfloat c0)
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return swizzle(UREG(REG_TYPE_R, 0), ZERO, ZERO, ZERO, ZERO);
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return swizzle(UREG(REG_TYPE_R, 0), ONE, ONE, ONE, ONE);
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for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
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if (p->constant_flags[reg] == I915_CONSTFLAG_PARAM)
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for (idx = 0; idx < 4; idx++) {
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if (!(p->constant_flags[reg] & (1 << idx)) ||
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p->constant[reg][idx] == c0) {
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p->constant[reg][idx] = c0;
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p->constant_flags[reg] |= 1 << idx;
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if (reg + 1 > p->nr_constants)
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p->nr_constants = reg + 1;
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return swizzle(UREG(REG_TYPE_CONST, reg), idx, ZERO, ZERO, ONE);
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fprintf(stderr, "%s: out of constants\n", __FUNCTION__);
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i915_emit_const2f(struct i915_fragment_program * p, GLfloat c0, GLfloat c1)
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return swizzle(i915_emit_const1f(p, c1), ZERO, X, Z, W);
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return swizzle(i915_emit_const1f(p, c1), ONE, X, Z, W);
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return swizzle(i915_emit_const1f(p, c0), X, ZERO, Z, W);
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return swizzle(i915_emit_const1f(p, c0), X, ONE, Z, W);
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for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
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if (p->constant_flags[reg] == 0xf ||
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p->constant_flags[reg] == I915_CONSTFLAG_PARAM)
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for (idx = 0; idx < 3; idx++) {
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if (!(p->constant_flags[reg] & (3 << idx))) {
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p->constant[reg][idx] = c0;
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p->constant[reg][idx + 1] = c1;
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p->constant_flags[reg] |= 3 << idx;
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if (reg + 1 > p->nr_constants)
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p->nr_constants = reg + 1;
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return swizzle(UREG(REG_TYPE_CONST, reg), idx, idx + 1, ZERO,
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fprintf(stderr, "%s: out of constants\n", __FUNCTION__);
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i915_emit_const4f(struct i915_fragment_program * p,
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GLfloat c0, GLfloat c1, GLfloat c2, GLfloat c3)
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for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
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if (p->constant_flags[reg] == 0xf &&
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p->constant[reg][0] == c0 &&
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p->constant[reg][1] == c1 &&
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p->constant[reg][2] == c2 && p->constant[reg][3] == c3) {
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return UREG(REG_TYPE_CONST, reg);
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else if (p->constant_flags[reg] == 0) {
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p->constant[reg][0] = c0;
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p->constant[reg][1] = c1;
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p->constant[reg][2] = c2;
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p->constant[reg][3] = c3;
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p->constant_flags[reg] = 0xf;
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if (reg + 1 > p->nr_constants)
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p->nr_constants = reg + 1;
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return UREG(REG_TYPE_CONST, reg);
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fprintf(stderr, "%s: out of constants\n", __FUNCTION__);
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i915_emit_const4fv(struct i915_fragment_program * p, const GLfloat * c)
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return i915_emit_const4f(p, c[0], c[1], c[2], c[3]);
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i915_emit_param4fv(struct i915_fragment_program * p, const GLfloat * values)
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for (i = 0; i < p->nr_params; i++) {
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if (p->param[i].values == values)
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return UREG(REG_TYPE_CONST, p->param[i].reg);
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for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
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if (p->constant_flags[reg] == 0) {
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p->constant_flags[reg] = I915_CONSTFLAG_PARAM;
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p->param[i].values = values;
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p->param[i].reg = reg;
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p->params_uptodate = 0;
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if (reg + 1 > p->nr_constants)
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p->nr_constants = reg + 1;
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return UREG(REG_TYPE_CONST, reg);
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fprintf(stderr, "%s: out of constants\n", __FUNCTION__);
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i915_program_error(struct i915_fragment_program *p, const char *msg)
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_mesa_problem(NULL, "i915_program_error: %s", msg);
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i915_init_program(struct i915_context *i915, struct i915_fragment_program *p)
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GLcontext *ctx = &i915->intel.ctx;
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TNLcontext *tnl = TNL_CONTEXT(ctx);
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p->params_uptodate = 0;
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p->nr_tex_indirect = 1; /* correct? */
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memset(p->constant_flags, 0, sizeof(p->constant_flags));
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p->decl = p->declarations;
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p->temp_flag = 0xffff000;
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p->utemp_flag = ~0x7;
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p->depth_written = 0;
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p->src_texture = UREG_BAD;
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p->src_previous = UREG(REG_TYPE_T, T_DIFFUSE);
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p->last_tex_stage = 0;
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*(p->decl++) = _3DSTATE_PIXEL_SHADER_PROGRAM;
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i915_fini_program(struct i915_fragment_program *p)
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GLuint program_size = p->csr - p->program;
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GLuint decl_size = p->decl - p->declarations;
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if (p->nr_tex_indirect > I915_MAX_TEX_INDIRECT)
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i915_program_error(p, "Exceeded max nr indirect texture lookups");
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if (p->nr_tex_insn > I915_MAX_TEX_INSN)
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i915_program_error(p, "Exceeded max TEX instructions");
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if (p->nr_alu_insn > I915_MAX_ALU_INSN)
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i915_program_error(p, "Exceeded max ALU instructions");
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if (p->nr_decl_insn > I915_MAX_DECL_INSN)
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i915_program_error(p, "Exceeded max DECL instructions");
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p->FragProg.Base.NumNativeInstructions = 0;
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p->FragProg.NumNativeAluInstructions = 0;
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p->FragProg.NumNativeTexInstructions = 0;
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p->FragProg.NumNativeTexIndirections = 0;
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p->FragProg.Base.NumNativeInstructions = (p->nr_alu_insn +
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p->FragProg.NumNativeAluInstructions = p->nr_alu_insn;
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p->FragProg.NumNativeTexInstructions = p->nr_tex_insn;
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p->FragProg.NumNativeTexIndirections = p->nr_tex_indirect;
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p->declarations[0] |= program_size + decl_size - 2;
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i915_upload_program(struct i915_context *i915,
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struct i915_fragment_program *p)
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GLuint program_size = p->csr - p->program;
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GLuint decl_size = p->decl - p->declarations;
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FALLBACK(&i915->intel, I915_FALLBACK_PROGRAM, p->error);
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/* Could just go straight to the batchbuffer from here:
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if (i915->state.ProgramSize != (program_size + decl_size) ||
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memcmp(i915->state.Program + decl_size, p->program,
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program_size * sizeof(int)) != 0) {
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I915_STATECHANGE(i915, I915_UPLOAD_PROGRAM);
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memcpy(i915->state.Program, p->declarations, decl_size * sizeof(int));
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memcpy(i915->state.Program + decl_size, p->program,
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program_size * sizeof(int));
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i915->state.ProgramSize = decl_size + program_size;
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/* Always seemed to get a failure if I used memcmp() to
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* shortcircuit this state upload. Needs further investigation?
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if (p->nr_constants) {
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GLuint nr = p->nr_constants;
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I915_ACTIVESTATE(i915, I915_UPLOAD_CONSTANTS, 1);
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I915_STATECHANGE(i915, I915_UPLOAD_CONSTANTS);
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i915->state.Constant[0] = _3DSTATE_PIXEL_SHADER_CONSTANTS | ((nr) * 4);
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i915->state.Constant[1] = (1 << (nr - 1)) | ((1 << (nr - 1)) - 1);
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memcpy(&i915->state.Constant[2], p->constant, 4 * sizeof(int) * (nr));
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i915->state.ConstantSize = 2 + (nr) * 4;
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for (i = 0; i < nr; i++) {
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fprintf(stderr, "const[%d]: %f %f %f %f\n", i,
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p->constant[i][1], p->constant[i][2], p->constant[i][3]);
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I915_ACTIVESTATE(i915, I915_UPLOAD_CONSTANTS, 0);