| /************************************************************************** |
| * |
| * 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 "shader/prog_instruction.h" |
| #include "shader/prog_parameter.h" |
| #include "shader/program.h" |
| #include "shader/programopt.h" |
| |
| #include "tnl/tnl.h" |
| #include "tnl/t_context.h" |
| |
| #include "intel_batchbuffer.h" |
| |
| #include "i915_reg.h" |
| #include "i915_context.h" |
| #include "i915_program.h" |
| |
| static const GLfloat sin_quad_constants[2][4] = { |
| { |
| 2.0, |
| -1.0, |
| .5, |
| .75 |
| }, |
| { |
| 4.0, |
| -4.0, |
| 1.0 / (2.0 * M_PI), |
| .2225 |
| } |
| }; |
| |
| 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 gl_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, ZERO, ZERO, ONE); |
| 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_CONSTANT: |
| 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_live_regs(p, inst), \ |
| 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 ) |
| |
| /* |
| * TODO: consider moving this into core |
| */ |
| static void calc_live_regs( struct i915_fragment_program *p ) |
| { |
| const struct gl_fragment_program *program = p->ctx->FragmentProgram._Current; |
| GLuint regsUsed = 0xffff0000; |
| GLint i; |
| |
| for (i = program->Base.NumInstructions - 1; i >= 0; i--) { |
| struct prog_instruction *inst = &program->Base.Instructions[i]; |
| int opArgs = _mesa_num_inst_src_regs(inst->Opcode); |
| int a; |
| |
| /* Register is written to: unmark as live for this and preceeding ops */ |
| if (inst->DstReg.File == PROGRAM_TEMPORARY) |
| regsUsed &= ~(1 << inst->DstReg.Index); |
| |
| for (a = 0; a < opArgs; a++) { |
| /* Register is read from: mark as live for this and preceeding ops */ |
| if (inst->SrcReg[a].File == PROGRAM_TEMPORARY) |
| regsUsed |= 1 << inst->SrcReg[a].Index; |
| } |
| |
| p->usedRegs[i] = regsUsed; |
| } |
| } |
| |
| static GLuint get_live_regs( struct i915_fragment_program *p, |
| const struct prog_instruction *inst ) |
| { |
| const struct gl_fragment_program *program = p->ctx->FragmentProgram._Current; |
| GLuint nr = inst - program->Base.Instructions; |
| |
| return p->usedRegs[nr]; |
| } |
| |
| |
| /* 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 gl_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; |
| } |
| |
| if (program->Base.NumInstructions > I915_MAX_INSN) { |
| i915_program_error( p, "Exceeded max instructions" ); |
| return; |
| } |
| |
| /* Not always needed: |
| */ |
| calc_live_regs(p); |
| |
| while (1) { |
| GLuint src0, src1, src2, flags; |
| GLuint tmp = 0, consts0 = 0, consts1 = 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); |
| consts0 = i915_emit_const4fv(p, sin_quad_constants[0]); |
| consts1 = i915_emit_const4fv(p, sin_quad_constants[1]); |
| |
| /* Reduce range from repeating about [-pi,pi] to [-1,1] */ |
| i915_emit_arith(p, |
| A0_MAD, |
| tmp, A0_DEST_CHANNEL_X, 0, |
| src0, |
| swizzle(consts1, Z, ZERO, ZERO, ZERO), /* 1/(2pi) */ |
| swizzle(consts0, W, ZERO, ZERO, ZERO)); /* .75 */ |
| |
| i915_emit_arith(p, A0_FRC, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0); |
| |
| i915_emit_arith(p, |
| A0_MAD, |
| tmp, A0_DEST_CHANNEL_X, 0, |
| tmp, |
| swizzle(consts0, X, ZERO, ZERO, ZERO), /* 2 */ |
| swizzle(consts0, Y, ZERO, ZERO, ZERO)); /* -1 */ |
| |
| /* Compute COS with the same calculation used for SIN, but a |
| * different source range has been mapped to [-1,1] this time. |
| */ |
| |
| /* tmp.y = abs(tmp.x); {x, abs(x), 0, 0} */ |
| i915_emit_arith(p, |
| A0_MAX, |
| tmp, A0_DEST_CHANNEL_Y, 0, |
| swizzle(tmp, ZERO, X, ZERO, ZERO), |
| negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0), |
| 0); |
| |
| /* tmp.y = tmp.y * tmp.x; {x, x * abs(x), 0, 0} */ |
| i915_emit_arith(p, |
| A0_MUL, |
| tmp, A0_DEST_CHANNEL_Y, 0, |
| swizzle(tmp, ZERO, X, ZERO, ZERO), |
| tmp, |
| 0); |
| |
| /* tmp.x = tmp.xy DP sin_quad_constants[2].xy */ |
| i915_emit_arith(p, |
| A0_DP3, |
| tmp, A0_DEST_CHANNEL_X, 0, |
| tmp, |
| swizzle(consts1, X, Y, ZERO, ZERO), |
| 0); |
| |
| /* tmp.x now contains a first approximation (y). Now, weight it |
| * against tmp.y**2 to get closer. |
| */ |
| i915_emit_arith(p, |
| A0_MAX, |
| tmp, A0_DEST_CHANNEL_Y, 0, |
| swizzle(tmp, ZERO, X, ZERO, ZERO), |
| negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0), |
| 0); |
| |
| /* tmp.y = tmp.x * tmp.y - tmp.x; {y, y * abs(y) - y, 0, 0} */ |
| i915_emit_arith(p, |
| A0_MAD, |
| tmp, A0_DEST_CHANNEL_Y, 0, |
| swizzle(tmp, ZERO, X, ZERO, ZERO), |
| swizzle(tmp, ZERO, Y, ZERO, ZERO), |
| negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0)); |
| |
| /* result = .2225 * tmp.y + tmp.x =.2225(y * abs(y) - y) + y= */ |
| i915_emit_arith(p, |
| A0_MAD, |
| get_result_vector(p, inst), |
| get_result_flags(inst), 0, |
| swizzle(consts1, W, W, W, W), |
| swizzle(tmp, Y, Y, Y, Y), |
| swizzle(tmp, X, X, X, X)); |
| 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, get_live_regs(p, inst), |
| 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); |
| consts0 = i915_emit_const4fv(p, sin_quad_constants[0]); |
| consts1 = i915_emit_const4fv(p, sin_quad_constants[1]); |
| |
| /* Reduce range from repeating about [-pi,pi] to [-1,1] */ |
| i915_emit_arith(p, |
| A0_MAD, |
| tmp, A0_DEST_CHANNEL_X, 0, |
| src0, |
| swizzle(consts1, Z, ZERO, ZERO, ZERO), /* 1/(2pi) */ |
| swizzle(consts0, Z, ZERO, ZERO, ZERO)); /* .5 */ |
| |
| i915_emit_arith(p, A0_FRC, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0); |
| |
| i915_emit_arith(p, |
| A0_MAD, |
| tmp, A0_DEST_CHANNEL_X, 0, |
| tmp, |
| swizzle(consts0, X, ZERO, ZERO, ZERO), /* 2 */ |
| swizzle(consts0, Y, ZERO, ZERO, ZERO)); /* -1 */ |
| |
| /* Compute sin using a quadratic and quartic. It gives continuity |
| * that repeating the Taylor series lacks every 2*pi, and has |
| * reduced error. |
| * |
| * The idea was described at: |
| * http://www.devmaster.net/forums/showthread.php?t=5784 |
| */ |
| |
| /* tmp.y = abs(tmp.x); {x, abs(x), 0, 0} */ |
| i915_emit_arith(p, |
| A0_MAX, |
| tmp, A0_DEST_CHANNEL_Y, 0, |
| swizzle(tmp, ZERO, X, ZERO, ZERO), |
| negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0), |
| 0); |
| |
| /* tmp.y = tmp.y * tmp.x; {x, x * abs(x), 0, 0} */ |
| i915_emit_arith(p, |
| A0_MUL, |
| tmp, A0_DEST_CHANNEL_Y, 0, |
| swizzle(tmp, ZERO, X, ZERO, ZERO), |
| tmp, |
| 0); |
| |
| /* tmp.x = tmp.xy DP sin_quad_constants[2].xy */ |
| i915_emit_arith(p, |
| A0_DP3, |
| tmp, A0_DEST_CHANNEL_X, 0, |
| tmp, |
| swizzle(consts1, X, Y, ZERO, ZERO), |
| 0); |
| |
| /* tmp.x now contains a first approximation (y). Now, weight it |
| * against tmp.y**2 to get closer. |
| */ |
| i915_emit_arith(p, |
| A0_MAX, |
| tmp, A0_DEST_CHANNEL_Y, 0, |
| swizzle(tmp, ZERO, X, ZERO, ZERO), |
| negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0), |
| 0); |
| |
| /* tmp.y = tmp.x * tmp.y - tmp.x; {y, y * abs(y) - y, 0, 0} */ |
| i915_emit_arith(p, |
| A0_MAD, |
| tmp, A0_DEST_CHANNEL_Y, 0, |
| swizzle(tmp, ZERO, X, ZERO, ZERO), |
| swizzle(tmp, ZERO, Y, ZERO, ZERO), |
| negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0)); |
| |
| /* result = .2225 * tmp.y + tmp.x =.2225(y * abs(y) - y) + y= */ |
| i915_emit_arith(p, |
| A0_MAD, |
| get_result_vector(p, inst), |
| get_result_flags(inst), 0, |
| swizzle(consts1, W, W, W, W), |
| swizzle(tmp, Y, Y, Y, Y), |
| swizzle(tmp, X, X, X, X)); |
| |
| 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); |
| } |
| } |
| |
| |
| 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) |
| { |
| struct i915_context *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 gl_program *prog) |
| { |
| if (target == GL_FRAGMENT_PROGRAM_ARB) { |
| struct i915_context *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); |
| |
| } |
| } |
| |
| static struct gl_program * |
| i915NewProgram(GLcontext * ctx, GLenum target, GLuint id) |
| { |
| switch (target) { |
| case GL_VERTEX_PROGRAM_ARB: |
| return _mesa_init_vertex_program(ctx, CALLOC_STRUCT(gl_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 gl_program *prog) |
| { |
| if (prog->Target == GL_FRAGMENT_PROGRAM_ARB) { |
| struct i915_context *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 gl_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 gl_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. |
| */ |
| if (p->FragProg.FogOption) { |
| /* add extra instructions to do fog, then turn off FogOption field */ |
| _mesa_append_fog_code(ctx, &p->FragProg); |
| p->FragProg.FogOption = GL_NONE; |
| } |
| } |
| |
| _tnl_program_string(ctx, target, prog); |
| } |
| |
| |
| void |
| i915ValidateFragmentProgram(struct i915_context *i915) |
| { |
| GLcontext *ctx = &i915->intel.ctx; |
| struct intel_context *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; |
| |
| if (i915->current_program != p) { |
| if (i915->current_program) { |
| i915->current_program->on_hardware = 0; |
| i915->current_program->params_uptodate = 0; |
| } |
| |
| i915->current_program = p; |
| } |
| |
| |
| /* 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); |
| } |
| |
| /* XXX this was disabled, but enabling this code helped fix the Glean |
| * tfragprog1 fog tests. |
| */ |
| #if 1 |
| 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]) { |
| int k; |
| |
| 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; |
| |
| k = intel->vtbl.check_vertex_size(intel, intel->vertex_size); |
| assert(k); |
| } |
| |
| 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; |
| } |
