diff options
Diffstat (limited to 'src/mesa/drivers/dri/i915/i915_fragprog.c')
| -rw-r--r-- | src/mesa/drivers/dri/i915/i915_fragprog.c | 1074 |
1 files changed, 1074 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915/i915_fragprog.c b/src/mesa/drivers/dri/i915/i915_fragprog.c new file mode 100644 index 0000000000..4c3f2236e5 --- /dev/null +++ b/src/mesa/drivers/dri/i915/i915_fragprog.c @@ -0,0 +1,1074 @@ +/************************************************************************** + * + * 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" + + + +/* 1, -1/3!, 1/5!, -1/7! */ +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, W, W, W); + 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_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 ) + + +/* 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; + } + + while (1) { + GLuint src0, src1, src2, flags; + GLuint tmp = 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); + + i915_emit_arith(p, + A0_MUL, + tmp, A0_DEST_CHANNEL_X, 0, + src0, i915_emit_const1f(p, 1.0 / (M_PI)), 0); + + i915_emit_arith(p, A0_MOD, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0); + + /* By choosing different taylor constants, could get rid of this mul: + */ + i915_emit_arith(p, + A0_MUL, + tmp, A0_DEST_CHANNEL_X, 0, + tmp, i915_emit_const1f(p, (M_PI)), 0); + + /* + * t0.xy = MUL x.xx11, x.x1111 ; x^2, x, 1, 1 + * t0 = MUL t0.xyxy t0.xx11 ; x^4, x^3, x^2, 1 + * t0 = MUL t0.xxz1 t0.z111 ; x^6 x^4 x^2 1 + * result = DP4 t0, cos_constants + */ + i915_emit_arith(p, + A0_MUL, + tmp, A0_DEST_CHANNEL_XY, 0, + swizzle(tmp, X, X, ONE, ONE), + swizzle(tmp, X, ONE, ONE, ONE), 0); + + i915_emit_arith(p, + A0_MUL, + tmp, A0_DEST_CHANNEL_XYZ, 0, + swizzle(tmp, X, Y, X, ONE), + swizzle(tmp, X, X, ONE, ONE), 0); + + 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), + get_result_flags(inst), 0, + swizzle(tmp, ONE, Z, Y, X), + i915_emit_const4fv(p, cos_constants), 0); + + 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, 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); + + i915_emit_arith(p, + A0_MUL, + tmp, A0_DEST_CHANNEL_X, 0, + src0, i915_emit_const1f(p, 1.0 / (M_PI)), 0); + + i915_emit_arith(p, A0_MOD, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0); + + /* By choosing different taylor constants, could get rid of this mul: + */ + i915_emit_arith(p, + A0_MUL, + tmp, A0_DEST_CHANNEL_X, 0, + tmp, i915_emit_const1f(p, (M_PI)), 0); + + /* + * 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 + * result = DP4 t1.wzyx, sin_constants + */ + i915_emit_arith(p, + A0_MUL, + tmp, A0_DEST_CHANNEL_XY, 0, + swizzle(tmp, X, X, ONE, ONE), + swizzle(tmp, 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); + + i915_emit_arith(p, + A0_MUL, + tmp, 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), + get_result_flags(inst), 0, + swizzle(tmp, W, Z, Y, X), + i915_emit_const4fv(p, sin_constants), 0); + 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; +} |