| /************************************************************************** |
| * |
| * 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 <strings.h> |
| |
| #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" |
| |
| |
| #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)) |
| |
| |
| #define I915_CONSTFLAG_PARAM 0x1f |
| |
| GLuint |
| i915_get_temp(struct i915_fragment_program *p) |
| { |
| int bit = ffs(~p->temp_flag); |
| if (!bit) { |
| fprintf(stderr, "%s: out of temporaries\n", __FILE__); |
| exit(1); |
| } |
| |
| p->temp_flag |= 1 << (bit - 1); |
| return UREG(REG_TYPE_R, (bit - 1)); |
| } |
| |
| |
| GLuint |
| i915_get_utemp(struct i915_fragment_program * p) |
| { |
| int bit = ffs(~p->utemp_flag); |
| if (!bit) { |
| fprintf(stderr, "%s: out of temporaries\n", __FILE__); |
| exit(1); |
| } |
| |
| p->utemp_flag |= 1 << (bit - 1); |
| return UREG(REG_TYPE_U, (bit - 1)); |
| } |
| |
| void |
| i915_release_utemps(struct i915_fragment_program *p) |
| { |
| p->utemp_flag = ~0x7; |
| } |
| |
| |
| GLuint |
| i915_emit_decl(struct i915_fragment_program *p, |
| GLuint type, GLuint nr, GLuint d0_flags) |
| { |
| GLuint reg = UREG(type, nr); |
| |
| if (type == REG_TYPE_T) { |
| if (p->decl_t & (1 << nr)) |
| return reg; |
| |
| p->decl_t |= (1 << nr); |
| } |
| else if (type == REG_TYPE_S) { |
| if (p->decl_s & (1 << nr)) |
| return reg; |
| |
| p->decl_s |= (1 << nr); |
| } |
| else |
| return reg; |
| |
| *(p->decl++) = (D0_DCL | D0_DEST(reg) | d0_flags); |
| *(p->decl++) = D1_MBZ; |
| *(p->decl++) = D2_MBZ; |
| |
| p->nr_decl_insn++; |
| return reg; |
| } |
| |
| GLuint |
| i915_emit_arith(struct i915_fragment_program * p, |
| GLuint op, |
| GLuint dest, |
| GLuint mask, |
| GLuint saturate, GLuint src0, GLuint src1, GLuint src2) |
| { |
| GLuint c[3]; |
| GLuint nr_const = 0; |
| |
| assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST); |
| dest = UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest)); |
| assert(dest); |
| |
| if (GET_UREG_TYPE(src0) == REG_TYPE_CONST) |
| c[nr_const++] = 0; |
| if (GET_UREG_TYPE(src1) == REG_TYPE_CONST) |
| c[nr_const++] = 1; |
| if (GET_UREG_TYPE(src2) == REG_TYPE_CONST) |
| c[nr_const++] = 2; |
| |
| /* Recursively call this function to MOV additional const values |
| * into temporary registers. Use utemp registers for this - |
| * currently shouldn't be possible to run out, but keep an eye on |
| * this. |
| */ |
| if (nr_const > 1) { |
| GLuint s[3], first, i, old_utemp_flag; |
| |
| s[0] = src0; |
| s[1] = src1; |
| s[2] = src2; |
| old_utemp_flag = p->utemp_flag; |
| |
| first = GET_UREG_NR(s[c[0]]); |
| for (i = 1; i < nr_const; i++) { |
| if (GET_UREG_NR(s[c[i]]) != first) { |
| GLuint tmp = i915_get_utemp(p); |
| |
| i915_emit_arith(p, A0_MOV, tmp, A0_DEST_CHANNEL_ALL, 0, |
| s[c[i]], 0, 0); |
| s[c[i]] = tmp; |
| } |
| } |
| |
| src0 = s[0]; |
| src1 = s[1]; |
| src2 = s[2]; |
| p->utemp_flag = old_utemp_flag; /* restore */ |
| } |
| |
| *(p->csr++) = (op | A0_DEST(dest) | mask | saturate | A0_SRC0(src0)); |
| *(p->csr++) = (A1_SRC0(src0) | A1_SRC1(src1)); |
| *(p->csr++) = (A2_SRC1(src1) | A2_SRC2(src2)); |
| |
| p->nr_alu_insn++; |
| return dest; |
| } |
| |
| static GLuint get_free_rreg (struct i915_fragment_program *p, |
| GLuint live_regs) |
| { |
| int bit = ffs(~live_regs); |
| if (!bit) { |
| i915_program_error(p, "Can't find free R reg"); |
| return UREG_BAD; |
| } |
| return UREG(REG_TYPE_R, bit - 1); |
| } |
| |
| GLuint i915_emit_texld( struct i915_fragment_program *p, |
| GLuint live_regs, |
| GLuint dest, |
| GLuint destmask, |
| GLuint sampler, |
| GLuint coord, |
| GLuint op ) |
| { |
| if (coord != UREG(GET_UREG_TYPE(coord), GET_UREG_NR(coord))) { |
| /* With the help of the "needed registers" table created earlier, pick |
| * a register we can MOV the swizzled TC to (since TEX doesn't support |
| * swizzled sources) */ |
| GLuint swizCoord = get_free_rreg(p, live_regs); |
| if (swizCoord == UREG_BAD) |
| return 0; |
| |
| i915_emit_arith( p, A0_MOV, swizCoord, A0_DEST_CHANNEL_ALL, 0, coord, 0, 0 ); |
| coord = swizCoord; |
| } |
| |
| /* Don't worry about saturate as we only support texture formats |
| * that are always in the 0..1 range. |
| */ |
| if (destmask != A0_DEST_CHANNEL_ALL) { |
| GLuint tmp = i915_get_utemp(p); |
| i915_emit_texld( p, 0, tmp, A0_DEST_CHANNEL_ALL, sampler, coord, op ); |
| i915_emit_arith( p, A0_MOV, dest, destmask, 0, tmp, 0, 0 ); |
| return dest; |
| } |
| else { |
| assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST); |
| assert(dest = UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest))); |
| |
| if (GET_UREG_TYPE(coord) != REG_TYPE_T) { |
| p->nr_tex_indirect++; |
| } |
| |
| *(p->csr++) = (op | |
| T0_DEST( dest ) | |
| T0_SAMPLER( sampler )); |
| |
| *(p->csr++) = T1_ADDRESS_REG( coord ); |
| *(p->csr++) = T2_MBZ; |
| |
| p->nr_tex_insn++; |
| return dest; |
| } |
| } |
| |
| |
| GLuint |
| i915_emit_const1f(struct i915_fragment_program * p, GLfloat c0) |
| { |
| GLint reg, idx; |
| |
| if (c0 == 0.0) |
| return swizzle(UREG(REG_TYPE_R, 0), ZERO, ZERO, ZERO, ZERO); |
| if (c0 == 1.0) |
| 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) |
| continue; |
| for (idx = 0; idx < 4; idx++) { |
| if (!(p->constant_flags[reg] & (1 << idx)) || |
| p->constant[reg][idx] == c0) { |
| p->constant[reg][idx] = c0; |
| p->constant_flags[reg] |= 1 << idx; |
| if (reg + 1 > p->nr_constants) |
| p->nr_constants = reg + 1; |
| return swizzle(UREG(REG_TYPE_CONST, reg), idx, ZERO, ZERO, ONE); |
| } |
| } |
| } |
| |
| fprintf(stderr, "%s: out of constants\n", __FUNCTION__); |
| p->error = 1; |
| return 0; |
| } |
| |
| GLuint |
| i915_emit_const2f(struct i915_fragment_program * p, GLfloat c0, GLfloat c1) |
| { |
| GLint reg, idx; |
| |
| if (c0 == 0.0) |
| return swizzle(i915_emit_const1f(p, c1), ZERO, X, Z, W); |
| if (c0 == 1.0) |
| return swizzle(i915_emit_const1f(p, c1), ONE, X, Z, W); |
| |
| if (c1 == 0.0) |
| return swizzle(i915_emit_const1f(p, c0), X, ZERO, Z, W); |
| if (c1 == 1.0) |
| 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) |
| continue; |
| for (idx = 0; idx < 3; idx++) { |
| if (!(p->constant_flags[reg] & (3 << idx))) { |
| p->constant[reg][idx] = c0; |
| p->constant[reg][idx + 1] = c1; |
| p->constant_flags[reg] |= 3 << idx; |
| if (reg + 1 > p->nr_constants) |
| p->nr_constants = reg + 1; |
| return swizzle(UREG(REG_TYPE_CONST, reg), idx, idx + 1, ZERO, |
| ONE); |
| } |
| } |
| } |
| |
| fprintf(stderr, "%s: out of constants\n", __FUNCTION__); |
| p->error = 1; |
| return 0; |
| } |
| |
| |
| |
| GLuint |
| i915_emit_const4f(struct i915_fragment_program * p, |
| GLfloat c0, GLfloat c1, GLfloat c2, GLfloat c3) |
| { |
| GLint reg; |
| |
| for (reg = 0; reg < I915_MAX_CONSTANT; reg++) { |
| if (p->constant_flags[reg] == 0xf && |
| p->constant[reg][0] == c0 && |
| p->constant[reg][1] == c1 && |
| p->constant[reg][2] == c2 && p->constant[reg][3] == c3) { |
| return UREG(REG_TYPE_CONST, reg); |
| } |
| else if (p->constant_flags[reg] == 0) { |
| p->constant[reg][0] = c0; |
| p->constant[reg][1] = c1; |
| p->constant[reg][2] = c2; |
| p->constant[reg][3] = c3; |
| p->constant_flags[reg] = 0xf; |
| if (reg + 1 > p->nr_constants) |
| p->nr_constants = reg + 1; |
| return UREG(REG_TYPE_CONST, reg); |
| } |
| } |
| |
| fprintf(stderr, "%s: out of constants\n", __FUNCTION__); |
| p->error = 1; |
| return 0; |
| } |
| |
| |
| GLuint |
| i915_emit_const4fv(struct i915_fragment_program * p, const GLfloat * c) |
| { |
| return i915_emit_const4f(p, c[0], c[1], c[2], c[3]); |
| } |
| |
| |
| GLuint |
| i915_emit_param4fv(struct i915_fragment_program * p, const GLfloat * values) |
| { |
| GLint reg, i; |
| |
| for (i = 0; i < p->nr_params; i++) { |
| if (p->param[i].values == values) |
| return UREG(REG_TYPE_CONST, p->param[i].reg); |
| } |
| |
| |
| for (reg = 0; reg < I915_MAX_CONSTANT; reg++) { |
| if (p->constant_flags[reg] == 0) { |
| p->constant_flags[reg] = I915_CONSTFLAG_PARAM; |
| i = p->nr_params++; |
| |
| p->param[i].values = values; |
| p->param[i].reg = reg; |
| p->params_uptodate = 0; |
| |
| if (reg + 1 > p->nr_constants) |
| p->nr_constants = reg + 1; |
| return UREG(REG_TYPE_CONST, reg); |
| } |
| } |
| |
| fprintf(stderr, "%s: out of constants\n", __FUNCTION__); |
| p->error = 1; |
| return 0; |
| } |
| |
| |
| |
| void |
| i915_program_error(struct i915_fragment_program *p, const char *msg) |
| { |
| _mesa_problem(NULL, "i915_program_error: %s", msg); |
| p->error = 1; |
| } |
| |
| |
| void |
| i915_init_program(struct i915_context *i915, struct i915_fragment_program *p) |
| { |
| GLcontext *ctx = &i915->intel.ctx; |
| |
| p->translated = 0; |
| p->params_uptodate = 0; |
| p->on_hardware = 0; |
| p->error = 0; |
| |
| p->nr_tex_indirect = 1; /* correct? */ |
| p->nr_tex_insn = 0; |
| p->nr_alu_insn = 0; |
| p->nr_decl_insn = 0; |
| |
| p->ctx = ctx; |
| memset(p->constant_flags, 0, sizeof(p->constant_flags)); |
| |
| p->nr_constants = 0; |
| p->csr = p->program; |
| p->decl = p->declarations; |
| p->decl_s = 0; |
| p->decl_t = 0; |
| p->temp_flag = 0xffff000; |
| p->utemp_flag = ~0x7; |
| p->wpos_tex = -1; |
| p->depth_written = 0; |
| p->nr_params = 0; |
| |
| *(p->decl++) = _3DSTATE_PIXEL_SHADER_PROGRAM; |
| } |
| |
| |
| void |
| i915_fini_program(struct i915_fragment_program *p) |
| { |
| GLuint program_size = p->csr - p->program; |
| GLuint decl_size = p->decl - p->declarations; |
| |
| if (p->nr_tex_indirect > I915_MAX_TEX_INDIRECT) |
| i915_program_error(p, "Exceeded max nr indirect texture lookups"); |
| |
| if (p->nr_tex_insn > I915_MAX_TEX_INSN) |
| i915_program_error(p, "Exceeded max TEX instructions"); |
| |
| if (p->nr_alu_insn > I915_MAX_ALU_INSN) |
| i915_program_error(p, "Exceeded max ALU instructions"); |
| |
| if (p->nr_decl_insn > I915_MAX_DECL_INSN) |
| i915_program_error(p, "Exceeded max DECL instructions"); |
| |
| if (p->error) { |
| p->FragProg.Base.NumNativeInstructions = 0; |
| p->FragProg.Base.NumNativeAluInstructions = 0; |
| p->FragProg.Base.NumNativeTexInstructions = 0; |
| p->FragProg.Base.NumNativeTexIndirections = 0; |
| } |
| else { |
| p->FragProg.Base.NumNativeInstructions = (p->nr_alu_insn + |
| p->nr_tex_insn + |
| p->nr_decl_insn); |
| p->FragProg.Base.NumNativeAluInstructions = p->nr_alu_insn; |
| p->FragProg.Base.NumNativeTexInstructions = p->nr_tex_insn; |
| p->FragProg.Base.NumNativeTexIndirections = p->nr_tex_indirect; |
| } |
| |
| p->declarations[0] |= program_size + decl_size - 2; |
| } |
| |
| void |
| i915_upload_program(struct i915_context *i915, |
| struct i915_fragment_program *p) |
| { |
| GLuint program_size = p->csr - p->program; |
| GLuint decl_size = p->decl - p->declarations; |
| |
| FALLBACK(&i915->intel, I915_FALLBACK_PROGRAM, p->error); |
| |
| /* Could just go straight to the batchbuffer from here: |
| */ |
| if (i915->state.ProgramSize != (program_size + decl_size) || |
| memcmp(i915->state.Program + decl_size, p->program, |
| program_size * sizeof(int)) != 0) { |
| I915_STATECHANGE(i915, I915_UPLOAD_PROGRAM); |
| memcpy(i915->state.Program, p->declarations, decl_size * sizeof(int)); |
| memcpy(i915->state.Program + decl_size, p->program, |
| program_size * sizeof(int)); |
| i915->state.ProgramSize = decl_size + program_size; |
| } |
| |
| /* Always seemed to get a failure if I used memcmp() to |
| * shortcircuit this state upload. Needs further investigation? |
| */ |
| if (p->nr_constants) { |
| GLuint nr = p->nr_constants; |
| |
| I915_ACTIVESTATE(i915, I915_UPLOAD_CONSTANTS, 1); |
| I915_STATECHANGE(i915, I915_UPLOAD_CONSTANTS); |
| |
| i915->state.Constant[0] = _3DSTATE_PIXEL_SHADER_CONSTANTS | ((nr) * 4); |
| i915->state.Constant[1] = (1 << (nr - 1)) | ((1 << (nr - 1)) - 1); |
| |
| memcpy(&i915->state.Constant[2], p->constant, 4 * sizeof(int) * (nr)); |
| i915->state.ConstantSize = 2 + (nr) * 4; |
| |
| if (0) { |
| GLuint i; |
| for (i = 0; i < nr; i++) { |
| fprintf(stderr, "const[%d]: %f %f %f %f\n", i, |
| p->constant[i][0], |
| p->constant[i][1], p->constant[i][2], p->constant[i][3]); |
| } |
| } |
| } |
| else { |
| I915_ACTIVESTATE(i915, I915_UPLOAD_CONSTANTS, 0); |
| } |
| |
| p->on_hardware = 1; |
| } |
