| /************************************************************************** |
| * |
| * Copyright 2007 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 <stdarg.h> |
| |
| #include "i915_reg.h" |
| #include "i915_context.h" |
| #include "i915_fpc.h" |
| |
| #include "pipe/p_shader_tokens.h" |
| #include "util/u_math.h" |
| #include "util/u_memory.h" |
| #include "util/u_string.h" |
| #include "tgsi/tgsi_parse.h" |
| #include "tgsi/tgsi_dump.h" |
| |
| #include "draw/draw_vertex.h" |
| |
| #ifndef M_PI |
| #define M_PI 3.14159265358979323846 |
| #endif |
| |
| /** |
| * Simple pass-through fragment shader to use when we don't have |
| * a real shader (or it fails to compile for some reason). |
| */ |
| static unsigned passthrough_decl[] = |
| { |
| _3DSTATE_PIXEL_SHADER_PROGRAM | ((2*3)-1), |
| |
| /* declare input color: |
| */ |
| (D0_DCL | |
| (REG_TYPE_T << D0_TYPE_SHIFT) | |
| (T_DIFFUSE << D0_NR_SHIFT) | |
| D0_CHANNEL_ALL), |
| 0, |
| 0, |
| }; |
| |
| static unsigned passthrough_program[] = |
| { |
| /* move to output color: |
| */ |
| (A0_MOV | |
| (REG_TYPE_OC << A0_DEST_TYPE_SHIFT) | |
| A0_DEST_CHANNEL_ALL | |
| (REG_TYPE_T << A0_SRC0_TYPE_SHIFT) | |
| (T_DIFFUSE << A0_SRC0_NR_SHIFT)), |
| 0x01230000, /* .xyzw */ |
| 0 |
| }; |
| |
| |
| /* 1, -1/3!, 1/5!, -1/7! */ |
| static const float scs_sin_constants[4] = { 1.0, |
| -1.0f / (3 * 2 * 1), |
| 1.0f / (5 * 4 * 3 * 2 * 1), |
| -1.0f / (7 * 6 * 5 * 4 * 3 * 2 * 1) |
| }; |
| |
| /* 1, -1/2!, 1/4!, -1/6! */ |
| static const float scs_cos_constants[4] = { 1.0, |
| -1.0f / (2 * 1), |
| 1.0f / (4 * 3 * 2 * 1), |
| -1.0f / (6 * 5 * 4 * 3 * 2 * 1) |
| }; |
| |
| /* 2*pi, -(2*pi)^3/3!, (2*pi)^5/5!, -(2*pi)^7/7! */ |
| static const float sin_constants[4] = { 2.0 * M_PI, |
| -8.0f * M_PI * M_PI * M_PI / (3 * 2 * 1), |
| 32.0f * M_PI * M_PI * M_PI * M_PI * M_PI / (5 * 4 * 3 * 2 * 1), |
| -128.0f * M_PI * M_PI * M_PI * M_PI * M_PI * M_PI * M_PI / (7 * 6 * 5 * 4 * 3 * 2 * 1) |
| }; |
| |
| /* 1, -(2*pi)^2/2!, (2*pi)^4/4!, -(2*pi)^6/6! */ |
| static const float cos_constants[4] = { 1.0, |
| -4.0f * M_PI * M_PI / (2 * 1), |
| 16.0f * M_PI * M_PI * M_PI * M_PI / (4 * 3 * 2 * 1), |
| -64.0f * M_PI * M_PI * M_PI * M_PI * M_PI * M_PI / (6 * 5 * 4 * 3 * 2 * 1) |
| }; |
| |
| |
| |
| /** |
| * component-wise negation of ureg |
| */ |
| static INLINE int |
| negate(int reg, int x, int y, int z, int w) |
| { |
| /* Another neat thing about the UREG representation */ |
| return reg ^ (((x & 1) << UREG_CHANNEL_X_NEGATE_SHIFT) | |
| ((y & 1) << UREG_CHANNEL_Y_NEGATE_SHIFT) | |
| ((z & 1) << UREG_CHANNEL_Z_NEGATE_SHIFT) | |
| ((w & 1) << UREG_CHANNEL_W_NEGATE_SHIFT)); |
| } |
| |
| |
| /** |
| * In the event of a translation failure, we'll generate a simple color |
| * pass-through program. |
| */ |
| static void |
| i915_use_passthrough_shader(struct i915_fragment_shader *fs) |
| { |
| fs->program = (uint *) MALLOC(sizeof(passthrough_program)); |
| fs->decl = (uint *) MALLOC(sizeof(passthrough_decl)); |
| if (fs->program) { |
| memcpy(fs->program, passthrough_program, sizeof(passthrough_program)); |
| memcpy(fs->decl, passthrough_decl, sizeof(passthrough_decl)); |
| fs->program_len = Elements(passthrough_program); |
| fs->decl_len = Elements(passthrough_decl); |
| } |
| fs->num_constants = 0; |
| } |
| |
| |
| void |
| i915_program_error(struct i915_fp_compile *p, const char *msg, ...) |
| { |
| va_list args; |
| char buffer[1024]; |
| |
| debug_printf("i915_program_error: "); |
| va_start( args, msg ); |
| util_vsnprintf( buffer, sizeof(buffer), msg, args ); |
| va_end( args ); |
| debug_printf("%s", buffer); |
| debug_printf("\n"); |
| |
| p->error = 1; |
| } |
| |
| static uint get_mapping(struct i915_fragment_shader* fs, int unit) |
| { |
| int i; |
| for (i = 0; i < I915_TEX_UNITS; i++) |
| { |
| if (fs->generic_mapping[i] == -1) { |
| fs->generic_mapping[i] = unit; |
| return i; |
| } |
| if (fs->generic_mapping[i] == unit) |
| return i; |
| } |
| debug_printf("Exceeded max generics\n"); |
| return 0; |
| } |
| |
| /** |
| * Construct a ureg for the given source register. Will emit |
| * constants, apply swizzling and negation as needed. |
| */ |
| static uint |
| src_vector(struct i915_fp_compile *p, |
| const struct i915_full_src_register *source, |
| struct i915_fragment_shader* fs) |
| { |
| uint index = source->Register.Index; |
| uint src = 0, sem_name, sem_ind; |
| |
| switch (source->Register.File) { |
| case TGSI_FILE_TEMPORARY: |
| if (source->Register.Index >= I915_MAX_TEMPORARY) { |
| i915_program_error(p, "Exceeded max temporary reg"); |
| return 0; |
| } |
| src = UREG(REG_TYPE_R, index); |
| break; |
| case TGSI_FILE_INPUT: |
| /* XXX: Packing COL1, FOGC into a single attribute works for |
| * texenv programs, but will fail for real fragment programs |
| * that use these attributes and expect them to be a full 4 |
| * components wide. Could use a texcoord to pass these |
| * attributes if necessary, but that won't work in the general |
| * case. |
| * |
| * We also use a texture coordinate to pass wpos when possible. |
| */ |
| |
| sem_name = p->shader->info.input_semantic_name[index]; |
| sem_ind = p->shader->info.input_semantic_index[index]; |
| |
| switch (sem_name) { |
| case TGSI_SEMANTIC_POSITION: |
| { |
| /* for fragcoord */ |
| int real_tex_unit = get_mapping(fs, I915_SEMANTIC_POS); |
| src = i915_emit_decl(p, REG_TYPE_T, T_TEX0 + real_tex_unit, D0_CHANNEL_ALL); |
| break; |
| } |
| case TGSI_SEMANTIC_COLOR: |
| if (sem_ind == 0) { |
| src = i915_emit_decl(p, REG_TYPE_T, T_DIFFUSE, D0_CHANNEL_ALL); |
| } |
| else { |
| /* secondary color */ |
| assert(sem_ind == 1); |
| src = i915_emit_decl(p, REG_TYPE_T, T_SPECULAR, D0_CHANNEL_XYZ); |
| src = swizzle(src, X, Y, Z, ONE); |
| } |
| break; |
| case TGSI_SEMANTIC_FOG: |
| src = i915_emit_decl(p, REG_TYPE_T, T_FOG_W, D0_CHANNEL_W); |
| src = swizzle(src, W, W, W, W); |
| break; |
| case TGSI_SEMANTIC_GENERIC: |
| { |
| int real_tex_unit = get_mapping(fs, sem_ind); |
| src = i915_emit_decl(p, REG_TYPE_T, T_TEX0 + real_tex_unit, D0_CHANNEL_ALL); |
| break; |
| } |
| case TGSI_SEMANTIC_FACE: |
| { |
| /* for back/front faces */ |
| int real_tex_unit = get_mapping(fs, I915_SEMANTIC_FACE); |
| src = i915_emit_decl(p, REG_TYPE_T, T_TEX0 + real_tex_unit, D0_CHANNEL_X); |
| break; |
| } |
| default: |
| i915_program_error(p, "Bad source->Index"); |
| return 0; |
| } |
| break; |
| |
| case TGSI_FILE_IMMEDIATE: |
| assert(index < p->num_immediates); |
| index = p->immediates_map[index]; |
| /* fall-through */ |
| case TGSI_FILE_CONSTANT: |
| src = UREG(REG_TYPE_CONST, index); |
| break; |
| |
| default: |
| i915_program_error(p, "Bad source->File"); |
| return 0; |
| } |
| |
| src = swizzle(src, |
| source->Register.SwizzleX, |
| source->Register.SwizzleY, |
| source->Register.SwizzleZ, |
| source->Register.SwizzleW); |
| |
| /* There's both negate-all-components and per-component negation. |
| * Try to handle both here. |
| */ |
| { |
| int n = source->Register.Negate; |
| src = negate(src, n, n, n, n); |
| } |
| |
| /* no abs() */ |
| #if 0 |
| /* XXX assertions disabled to allow arbfplight.c to run */ |
| /* XXX enable these assertions, or fix things */ |
| assert(!source->Register.Absolute); |
| #endif |
| if (source->Register.Absolute) |
| debug_printf("Unhandled absolute value\n"); |
| |
| return src; |
| } |
| |
| |
| /** |
| * Construct a ureg for a destination register. |
| */ |
| static uint |
| get_result_vector(struct i915_fp_compile *p, |
| const struct i915_full_dst_register *dest) |
| { |
| switch (dest->Register.File) { |
| case TGSI_FILE_OUTPUT: |
| { |
| uint sem_name = p->shader->info.output_semantic_name[dest->Register.Index]; |
| switch (sem_name) { |
| case TGSI_SEMANTIC_POSITION: |
| return UREG(REG_TYPE_OD, 0); |
| case TGSI_SEMANTIC_COLOR: |
| return UREG(REG_TYPE_OC, 0); |
| default: |
| i915_program_error(p, "Bad inst->DstReg.Index/semantics"); |
| return 0; |
| } |
| } |
| case TGSI_FILE_TEMPORARY: |
| return UREG(REG_TYPE_R, dest->Register.Index); |
| default: |
| i915_program_error(p, "Bad inst->DstReg.File"); |
| return 0; |
| } |
| } |
| |
| |
| /** |
| * Compute flags for saturation and writemask. |
| */ |
| static uint |
| get_result_flags(const struct i915_full_instruction *inst) |
| { |
| const uint writeMask |
| = inst->Dst[0].Register.WriteMask; |
| uint flags = 0x0; |
| |
| if (inst->Instruction.Saturate == TGSI_SAT_ZERO_ONE) |
| flags |= A0_DEST_SATURATE; |
| |
| if (writeMask & TGSI_WRITEMASK_X) |
| flags |= A0_DEST_CHANNEL_X; |
| if (writeMask & TGSI_WRITEMASK_Y) |
| flags |= A0_DEST_CHANNEL_Y; |
| if (writeMask & TGSI_WRITEMASK_Z) |
| flags |= A0_DEST_CHANNEL_Z; |
| if (writeMask & TGSI_WRITEMASK_W) |
| flags |= A0_DEST_CHANNEL_W; |
| |
| return flags; |
| } |
| |
| |
| /** |
| * Convert TGSI_TEXTURE_x token to DO_SAMPLE_TYPE_x token |
| */ |
| static uint |
| translate_tex_src_target(struct i915_fp_compile *p, uint tex) |
| { |
| switch (tex) { |
| case TGSI_TEXTURE_SHADOW1D: |
| /* fall-through */ |
| case TGSI_TEXTURE_1D: |
| return D0_SAMPLE_TYPE_2D; |
| |
| case TGSI_TEXTURE_SHADOW2D: |
| /* fall-through */ |
| case TGSI_TEXTURE_2D: |
| return D0_SAMPLE_TYPE_2D; |
| |
| case TGSI_TEXTURE_SHADOWRECT: |
| /* fall-through */ |
| case TGSI_TEXTURE_RECT: |
| return D0_SAMPLE_TYPE_2D; |
| |
| case TGSI_TEXTURE_3D: |
| return D0_SAMPLE_TYPE_VOLUME; |
| |
| case TGSI_TEXTURE_CUBE: |
| return D0_SAMPLE_TYPE_CUBE; |
| |
| default: |
| i915_program_error(p, "TexSrc type"); |
| return 0; |
| } |
| } |
| |
| /** |
| * Return the number of coords needed to access a given TGSI_TEXTURE_* |
| */ |
| static uint |
| texture_num_coords(struct i915_fp_compile *p, uint tex) |
| { |
| switch (tex) { |
| case TGSI_TEXTURE_SHADOW1D: |
| case TGSI_TEXTURE_1D: |
| return 1; |
| |
| case TGSI_TEXTURE_SHADOW2D: |
| case TGSI_TEXTURE_2D: |
| case TGSI_TEXTURE_SHADOWRECT: |
| case TGSI_TEXTURE_RECT: |
| return 2; |
| |
| case TGSI_TEXTURE_3D: |
| case TGSI_TEXTURE_CUBE: |
| return 3; |
| |
| default: |
| i915_program_error(p, "Num coords"); |
| return 2; |
| } |
| } |
| |
| |
| /** |
| * Generate texel lookup instruction. |
| */ |
| static void |
| emit_tex(struct i915_fp_compile *p, |
| const struct i915_full_instruction *inst, |
| uint opcode, |
| struct i915_fragment_shader* fs) |
| { |
| uint texture = inst->Texture.Texture; |
| uint unit = inst->Src[1].Register.Index; |
| uint tex = translate_tex_src_target( p, texture ); |
| uint sampler = i915_emit_decl(p, REG_TYPE_S, unit, tex); |
| uint coord = src_vector( p, &inst->Src[0], fs); |
| |
| i915_emit_texld( p, |
| get_result_vector( p, &inst->Dst[0] ), |
| get_result_flags( inst ), |
| sampler, |
| coord, |
| opcode, |
| texture_num_coords(p, texture) ); |
| } |
| |
| |
| /** |
| * Generate a simple arithmetic instruction |
| * \param opcode the i915 opcode |
| * \param numArgs the number of input/src arguments |
| */ |
| static void |
| emit_simple_arith(struct i915_fp_compile *p, |
| const struct i915_full_instruction *inst, |
| uint opcode, uint numArgs, |
| struct i915_fragment_shader* fs) |
| { |
| uint arg1, arg2, arg3; |
| |
| assert(numArgs <= 3); |
| |
| arg1 = (numArgs < 1) ? 0 : src_vector( p, &inst->Src[0], fs ); |
| arg2 = (numArgs < 2) ? 0 : src_vector( p, &inst->Src[1], fs ); |
| arg3 = (numArgs < 3) ? 0 : src_vector( p, &inst->Src[2], fs ); |
| |
| i915_emit_arith( p, |
| opcode, |
| get_result_vector( p, &inst->Dst[0]), |
| get_result_flags( inst ), 0, |
| arg1, |
| arg2, |
| arg3 ); |
| } |
| |
| |
| /** As above, but swap the first two src regs */ |
| static void |
| emit_simple_arith_swap2(struct i915_fp_compile *p, |
| const struct i915_full_instruction *inst, |
| uint opcode, uint numArgs, |
| struct i915_fragment_shader* fs) |
| { |
| struct i915_full_instruction inst2; |
| |
| assert(numArgs == 2); |
| |
| /* transpose first two registers */ |
| inst2 = *inst; |
| inst2.Src[0] = inst->Src[1]; |
| inst2.Src[1] = inst->Src[0]; |
| |
| emit_simple_arith(p, &inst2, opcode, numArgs, fs); |
| } |
| |
| /* |
| * Translate TGSI instruction to i915 instruction. |
| * |
| * Possible concerns: |
| * |
| * DDX, DDY -- return 0 |
| * 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. |
| */ |
| static void |
| i915_translate_instruction(struct i915_fp_compile *p, |
| const struct i915_full_instruction *inst, |
| struct i915_fragment_shader *fs) |
| { |
| uint writemask; |
| uint src0, src1, src2, flags; |
| uint tmp = 0; |
| |
| switch (inst->Instruction.Opcode) { |
| case TGSI_OPCODE_ABS: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| i915_emit_arith(p, |
| A0_MAX, |
| get_result_vector(p, &inst->Dst[0]), |
| get_result_flags(inst), 0, |
| src0, negate(src0, 1, 1, 1, 1), 0); |
| break; |
| |
| case TGSI_OPCODE_ADD: |
| emit_simple_arith(p, inst, A0_ADD, 2, fs); |
| break; |
| |
| case TGSI_OPCODE_CEIL: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| tmp = i915_get_utemp(p); |
| flags = get_result_flags(inst); |
| i915_emit_arith(p, |
| A0_FLR, |
| tmp, |
| flags & A0_DEST_CHANNEL_ALL, 0, |
| negate(src0, 1, 1, 1, 1), 0, 0); |
| i915_emit_arith(p, |
| A0_MOV, |
| get_result_vector(p, &inst->Dst[0]), |
| flags, 0, |
| negate(tmp, 1, 1, 1, 1), 0, 0); |
| break; |
| |
| case TGSI_OPCODE_CMP: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| src1 = src_vector(p, &inst->Src[1], fs); |
| src2 = src_vector(p, &inst->Src[2], fs); |
| i915_emit_arith(p, A0_CMP, |
| get_result_vector(p, &inst->Dst[0]), |
| get_result_flags(inst), |
| 0, src0, src2, src1); /* NOTE: order of src2, src1 */ |
| break; |
| |
| case TGSI_OPCODE_COS: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| tmp = i915_get_utemp(p); |
| |
| i915_emit_arith(p, |
| A0_MUL, |
| tmp, A0_DEST_CHANNEL_X, 0, |
| src0, i915_emit_const1f(p, 1.0f / (float) (M_PI * 2.0)), 0); |
| |
| i915_emit_arith(p, A0_MOD, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0); |
| |
| /* |
| * t0.xy = MUL x.xx11, x.x111 ; 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->Dst[0]), |
| get_result_flags(inst), 0, |
| swizzle(tmp, ONE, Z, Y, X), |
| i915_emit_const4fv(p, cos_constants), 0); |
| break; |
| |
| case TGSI_OPCODE_DDX: |
| case TGSI_OPCODE_DDY: |
| /* XXX We just output 0 here */ |
| debug_printf("Punting DDX/DDX\n"); |
| src0 = get_result_vector(p, &inst->Dst[0]); |
| i915_emit_arith(p, |
| A0_MOV, |
| get_result_vector(p, &inst->Dst[0]), |
| get_result_flags(inst), 0, |
| swizzle(src0, ZERO, ZERO, ZERO, ZERO), 0, 0); |
| break; |
| |
| case TGSI_OPCODE_DP2: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| src1 = src_vector(p, &inst->Src[1], fs); |
| |
| i915_emit_arith(p, |
| A0_DP3, |
| get_result_vector(p, &inst->Dst[0]), |
| get_result_flags(inst), 0, |
| swizzle(src0, X, Y, ZERO, ZERO), src1, 0); |
| break; |
| |
| case TGSI_OPCODE_DP3: |
| emit_simple_arith(p, inst, A0_DP3, 2, fs); |
| break; |
| |
| case TGSI_OPCODE_DP4: |
| emit_simple_arith(p, inst, A0_DP4, 2, fs); |
| break; |
| |
| case TGSI_OPCODE_DPH: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| src1 = src_vector(p, &inst->Src[1], fs); |
| |
| i915_emit_arith(p, |
| A0_DP4, |
| get_result_vector(p, &inst->Dst[0]), |
| get_result_flags(inst), 0, |
| swizzle(src0, X, Y, Z, ONE), src1, 0); |
| break; |
| |
| case TGSI_OPCODE_DST: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| src1 = src_vector(p, &inst->Src[1], fs); |
| |
| /* 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->Dst[0]), |
| get_result_flags(inst), 0, |
| swizzle(src0, ONE, Y, Z, ONE), |
| swizzle(src1, ONE, Y, ONE, W), 0); |
| break; |
| |
| case TGSI_OPCODE_END: |
| /* no-op */ |
| break; |
| |
| case TGSI_OPCODE_EX2: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| |
| i915_emit_arith(p, |
| A0_EXP, |
| get_result_vector(p, &inst->Dst[0]), |
| get_result_flags(inst), 0, |
| swizzle(src0, X, X, X, X), 0, 0); |
| break; |
| |
| case TGSI_OPCODE_FLR: |
| emit_simple_arith(p, inst, A0_FLR, 1, fs); |
| break; |
| |
| case TGSI_OPCODE_FRC: |
| emit_simple_arith(p, inst, A0_FRC, 1, fs); |
| break; |
| |
| case TGSI_OPCODE_KIL: |
| /* kill if src[0].x < 0 || src[0].y < 0 ... */ |
| src0 = src_vector(p, &inst->Src[0], fs); |
| tmp = i915_get_utemp(p); |
| |
| i915_emit_texld(p, |
| tmp, /* dest reg: a dummy reg */ |
| A0_DEST_CHANNEL_ALL, /* dest writemask */ |
| 0, /* sampler */ |
| src0, /* coord*/ |
| T0_TEXKILL, /* opcode */ |
| 1); /* num_coord */ |
| break; |
| |
| case TGSI_OPCODE_KILP: |
| /* We emit an unconditional kill; we may want to revisit |
| * if we ever implement conditionals. |
| */ |
| tmp = i915_get_utemp(p); |
| |
| i915_emit_texld(p, |
| tmp, /* dest reg: a dummy reg */ |
| A0_DEST_CHANNEL_ALL, /* dest writemask */ |
| 0, /* sampler */ |
| negate(swizzle(0, ONE, ONE, ONE, ONE), 1, 1, 1, 1), /* coord */ |
| T0_TEXKILL, /* opcode */ |
| 1); /* num_coord */ |
| break; |
| |
| case TGSI_OPCODE_LG2: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| |
| i915_emit_arith(p, |
| A0_LOG, |
| get_result_vector(p, &inst->Dst[0]), |
| get_result_flags(inst), 0, |
| swizzle(src0, X, X, X, X), 0, 0); |
| break; |
| |
| case TGSI_OPCODE_LIT: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| 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->Dst[0]), |
| 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 TGSI_OPCODE_LRP: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| src1 = src_vector(p, &inst->Src[1], fs); |
| src2 = src_vector(p, &inst->Src[2], fs); |
| 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->Dst[0]), |
| flags, 0, negate(src2, 1, 1, 1, 1), src0, tmp); |
| break; |
| |
| case TGSI_OPCODE_MAD: |
| emit_simple_arith(p, inst, A0_MAD, 3, fs); |
| break; |
| |
| case TGSI_OPCODE_MAX: |
| emit_simple_arith(p, inst, A0_MAX, 2, fs); |
| break; |
| |
| case TGSI_OPCODE_MIN: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| src1 = src_vector(p, &inst->Src[1], fs); |
| 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->Dst[0]), |
| flags, 0, negate(tmp, 1, 1, 1, 1), 0, 0); |
| break; |
| |
| case TGSI_OPCODE_MOV: |
| emit_simple_arith(p, inst, A0_MOV, 1, fs); |
| break; |
| |
| case TGSI_OPCODE_MUL: |
| emit_simple_arith(p, inst, A0_MUL, 2, fs); |
| break; |
| |
| case TGSI_OPCODE_NOP: |
| break; |
| |
| case TGSI_OPCODE_POW: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| src1 = src_vector(p, &inst->Src[1], fs); |
| 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->Dst[0]), |
| flags, 0, swizzle(tmp, X, X, X, X), 0, 0); |
| break; |
| |
| case TGSI_OPCODE_RET: |
| /* XXX: no-op? */ |
| break; |
| |
| case TGSI_OPCODE_RCP: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| |
| i915_emit_arith(p, |
| A0_RCP, |
| get_result_vector(p, &inst->Dst[0]), |
| get_result_flags(inst), 0, |
| swizzle(src0, X, X, X, X), 0, 0); |
| break; |
| |
| case TGSI_OPCODE_RSQ: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| |
| i915_emit_arith(p, |
| A0_RSQ, |
| get_result_vector(p, &inst->Dst[0]), |
| get_result_flags(inst), 0, |
| swizzle(src0, X, X, X, X), 0, 0); |
| break; |
| |
| case TGSI_OPCODE_SCS: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| 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, scs_sin_constants |
| * t1 = MUL t0.xxz1 t0.z111 ; x^6 x^4 x^2 1 |
| * scs.y = DP4 t1, scs_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); |
| |
| writemask = inst->Dst[0].Register.WriteMask; |
| |
| if (writemask & TGSI_WRITEMASK_Y) { |
| uint tmp1; |
| |
| if (writemask & TGSI_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->Dst[0]), |
| A0_DEST_CHANNEL_Y, 0, |
| swizzle(tmp1, W, Z, Y, X), |
| i915_emit_const4fv(p, scs_sin_constants), 0); |
| } |
| |
| if (writemask & TGSI_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->Dst[0]), |
| A0_DEST_CHANNEL_X, 0, |
| swizzle(tmp, ONE, Z, Y, X), |
| i915_emit_const4fv(p, scs_cos_constants), 0); |
| } |
| break; |
| |
| case TGSI_OPCODE_SEQ: |
| /* if we're both >= and <= then we're == */ |
| src0 = src_vector(p, &inst->Src[0], fs); |
| src1 = src_vector(p, &inst->Src[1], fs); |
| tmp = i915_get_utemp(p); |
| |
| i915_emit_arith(p, |
| A0_SGE, |
| tmp, A0_DEST_CHANNEL_ALL, 0, |
| src0, |
| src1, 0); |
| |
| i915_emit_arith(p, |
| A0_SGE, |
| get_result_vector(p, &inst->Dst[0]), |
| A0_DEST_CHANNEL_ALL, 0, |
| src1, |
| src0, 0); |
| |
| i915_emit_arith(p, |
| A0_MUL, |
| get_result_vector(p, &inst->Dst[0]), |
| A0_DEST_CHANNEL_ALL, 0, |
| get_result_vector(p, &inst->Dst[0]), |
| tmp, 0); |
| |
| break; |
| |
| case TGSI_OPCODE_SGE: |
| emit_simple_arith(p, inst, A0_SGE, 2, fs); |
| break; |
| |
| case TGSI_OPCODE_SIN: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| tmp = i915_get_utemp(p); |
| |
| i915_emit_arith(p, |
| A0_MUL, |
| tmp, A0_DEST_CHANNEL_X, 0, |
| src0, i915_emit_const1f(p, 1.0f / (float) (M_PI * 2.0)), 0); |
| |
| i915_emit_arith(p, A0_MOD, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 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->Dst[0]), |
| get_result_flags(inst), 0, |
| swizzle(tmp, W, Z, Y, X), |
| i915_emit_const4fv(p, sin_constants), 0); |
| break; |
| |
| case TGSI_OPCODE_SLE: |
| /* like SGE, but swap reg0, reg1 */ |
| emit_simple_arith_swap2(p, inst, A0_SGE, 2, fs); |
| break; |
| |
| case TGSI_OPCODE_SLT: |
| emit_simple_arith(p, inst, A0_SLT, 2, fs); |
| break; |
| |
| case TGSI_OPCODE_SGT: |
| /* like SLT, but swap reg0, reg1 */ |
| emit_simple_arith_swap2(p, inst, A0_SLT, 2, fs); |
| break; |
| |
| case TGSI_OPCODE_SNE: |
| /* if we're < or > then we're != */ |
| src0 = src_vector(p, &inst->Src[0], fs); |
| src1 = src_vector(p, &inst->Src[1], fs); |
| tmp = i915_get_utemp(p); |
| |
| i915_emit_arith(p, |
| A0_SLT, |
| tmp, |
| A0_DEST_CHANNEL_ALL, 0, |
| src0, |
| src1, 0); |
| |
| i915_emit_arith(p, |
| A0_SLT, |
| get_result_vector(p, &inst->Dst[0]), |
| A0_DEST_CHANNEL_ALL, 0, |
| src1, |
| src0, 0); |
| |
| i915_emit_arith(p, |
| A0_ADD, |
| get_result_vector(p, &inst->Dst[0]), |
| A0_DEST_CHANNEL_ALL, 0, |
| get_result_vector(p, &inst->Dst[0]), |
| tmp, 0); |
| break; |
| |
| case TGSI_OPCODE_SSG: |
| /* compute (src>0) - (src<0) */ |
| src0 = src_vector(p, &inst->Src[0], fs); |
| tmp = i915_get_utemp(p); |
| |
| i915_emit_arith(p, |
| A0_SLT, |
| tmp, |
| A0_DEST_CHANNEL_ALL, 0, |
| src0, |
| swizzle(src0, ZERO, ZERO, ZERO, ZERO), 0); |
| |
| i915_emit_arith(p, |
| A0_SLT, |
| get_result_vector(p, &inst->Dst[0]), |
| A0_DEST_CHANNEL_ALL, 0, |
| swizzle(src0, ZERO, ZERO, ZERO, ZERO), |
| src0, 0); |
| |
| i915_emit_arith(p, |
| A0_ADD, |
| get_result_vector(p, &inst->Dst[0]), |
| A0_DEST_CHANNEL_ALL, 0, |
| get_result_vector(p, &inst->Dst[0]), |
| negate(tmp, 1, 1, 1, 1), 0); |
| break; |
| |
| case TGSI_OPCODE_SUB: |
| src0 = src_vector(p, &inst->Src[0], fs); |
| src1 = src_vector(p, &inst->Src[1], fs); |
| |
| i915_emit_arith(p, |
| A0_ADD, |
| get_result_vector(p, &inst->Dst[0]), |
| get_result_flags(inst), 0, |
| src0, negate(src1, 1, 1, 1, 1), 0); |
| break; |
| |
| case TGSI_OPCODE_TEX: |
| emit_tex(p, inst, T0_TEXLD, fs); |
| break; |
| |
| case TGSI_OPCODE_TRUNC: |
| emit_simple_arith(p, inst, A0_TRC, 1, fs); |
| break; |
| |
| case TGSI_OPCODE_TXB: |
| emit_tex(p, inst, T0_TEXLDB, fs); |
| break; |
| |
| case TGSI_OPCODE_TXP: |
| emit_tex(p, inst, T0_TEXLDP, fs); |
| break; |
| |
| case TGSI_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->Src[0], fs); |
| src1 = src_vector(p, &inst->Src[1], fs); |
| 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->Dst[0]), |
| get_result_flags(inst), 0, |
| swizzle(src0, Y, Z, X, ONE), |
| swizzle(src1, Z, X, Y, ONE), |
| negate(tmp, 1, 1, 1, 0)); |
| break; |
| |
| default: |
| i915_program_error(p, "bad opcode %d", inst->Instruction.Opcode); |
| p->error = 1; |
| return; |
| } |
| |
| i915_release_utemps(p); |
| } |
| |
| |
| static void i915_translate_token(struct i915_fp_compile *p, |
| const union i915_full_token* token, |
| struct i915_fragment_shader *fs) |
| { |
| struct i915_fragment_shader *ifs = p->shader; |
| switch( token->Token.Type ) { |
| case TGSI_TOKEN_TYPE_PROPERTY: |
| /* |
| * We only support one cbuf, but we still need to ignore the property |
| * correctly so we don't hit the assert at the end of the switch case. |
| */ |
| assert(token->FullProperty.Property.PropertyName == |
| TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS); |
| break; |
| |
| case TGSI_TOKEN_TYPE_DECLARATION: |
| if (token->FullDeclaration.Declaration.File |
| == TGSI_FILE_CONSTANT) { |
| uint i; |
| for (i = token->FullDeclaration.Range.First; |
| i <= token->FullDeclaration.Range.Last; |
| i++) { |
| assert(ifs->constant_flags[i] == 0x0); |
| ifs->constant_flags[i] = I915_CONSTFLAG_USER; |
| ifs->num_constants = MAX2(ifs->num_constants, i + 1); |
| } |
| } |
| else if (token->FullDeclaration.Declaration.File |
| == TGSI_FILE_TEMPORARY) { |
| uint i; |
| for (i = token->FullDeclaration.Range.First; |
| i <= token->FullDeclaration.Range.Last; |
| i++) { |
| if (i >= I915_MAX_TEMPORARY) |
| debug_printf("Too many temps (%d)\n",i); |
| else |
| /* XXX just use shader->info->file_mask[TGSI_FILE_TEMPORARY] */ |
| p->temp_flag |= (1 << i); /* mark temp as used */ |
| } |
| } |
| break; |
| |
| case TGSI_TOKEN_TYPE_IMMEDIATE: |
| { |
| const struct tgsi_full_immediate *imm |
| = &token->FullImmediate; |
| const uint pos = p->num_immediates++; |
| uint j; |
| assert( imm->Immediate.NrTokens <= 4 + 1 ); |
| for (j = 0; j < imm->Immediate.NrTokens - 1; j++) { |
| p->immediates[pos][j] = imm->u[j].Float; |
| } |
| } |
| break; |
| |
| case TGSI_TOKEN_TYPE_INSTRUCTION: |
| if (p->first_instruction) { |
| /* resolve location of immediates */ |
| uint i, j; |
| for (i = 0; i < p->num_immediates; i++) { |
| /* find constant slot for this immediate */ |
| for (j = 0; j < I915_MAX_CONSTANT; j++) { |
| if (ifs->constant_flags[j] == 0x0) { |
| memcpy(ifs->constants[j], |
| p->immediates[i], |
| 4 * sizeof(float)); |
| /*printf("immediate %d maps to const %d\n", i, j);*/ |
| ifs->constant_flags[j] = 0xf; /* all four comps used */ |
| p->immediates_map[i] = j; |
| ifs->num_constants = MAX2(ifs->num_constants, j + 1); |
| break; |
| } |
| } |
| } |
| |
| p->first_instruction = FALSE; |
| } |
| |
| i915_translate_instruction(p, &token->FullInstruction, fs); |
| break; |
| |
| default: |
| assert( 0 ); |
| } |
| |
| } |
| |
| /** |
| * Translate TGSI fragment shader into i915 hardware instructions. |
| * \param p the translation state |
| * \param tokens the TGSI token array |
| */ |
| static void |
| i915_translate_instructions(struct i915_fp_compile *p, |
| const struct i915_token_list *tokens, |
| struct i915_fragment_shader *fs) |
| { |
| int i; |
| for(i = 0; i<tokens->NumTokens; i++) { |
| i915_translate_token(p, &tokens->Tokens[i], fs); |
| } |
| } |
| |
| |
| static struct i915_fp_compile * |
| i915_init_compile(struct i915_context *i915, |
| struct i915_fragment_shader *ifs) |
| { |
| struct i915_fp_compile *p = CALLOC_STRUCT(i915_fp_compile); |
| int i; |
| |
| p->shader = ifs; |
| |
| /* Put new constants at end of const buffer, growing downward. |
| * The problem is we don't know how many user-defined constants might |
| * be specified with pipe->set_constant_buffer(). |
| * Should pre-scan the user's program to determine the highest-numbered |
| * constant referenced. |
| */ |
| ifs->num_constants = 0; |
| memset(ifs->constant_flags, 0, sizeof(ifs->constant_flags)); |
| |
| memset(&p->register_phases, 0, sizeof(p->register_phases)); |
| |
| for (i = 0; i < I915_TEX_UNITS; i++) |
| ifs->generic_mapping[i] = -1; |
| |
| p->first_instruction = TRUE; |
| |
| p->nr_tex_indirect = 1; /* correct? */ |
| p->nr_tex_insn = 0; |
| p->nr_alu_insn = 0; |
| p->nr_decl_insn = 0; |
| |
| p->csr = p->program; |
| p->decl = p->declarations; |
| p->decl_s = 0; |
| p->decl_t = 0; |
| p->temp_flag = ~0x0 << I915_MAX_TEMPORARY; |
| p->utemp_flag = ~0x7; |
| |
| /* initialize the first program word */ |
| *(p->decl++) = _3DSTATE_PIXEL_SHADER_PROGRAM; |
| |
| return p; |
| } |
| |
| |
| /* Copy compile results to the fragment program struct and destroy the |
| * compilation context. |
| */ |
| static void |
| i915_fini_compile(struct i915_context *i915, struct i915_fp_compile *p) |
| { |
| struct i915_fragment_shader *ifs = p->shader; |
| unsigned long program_size = (unsigned long) (p->csr - p->program); |
| unsigned long decl_size = (unsigned long) (p->decl - p->declarations); |
| |
| if (p->nr_tex_indirect > I915_MAX_TEX_INDIRECT) |
| debug_printf("Exceeded max nr indirect texture lookups\n"); |
| |
| 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->NumNativeInstructions = 0; |
| p->NumNativeAluInstructions = 0; |
| p->NumNativeTexInstructions = 0; |
| p->NumNativeTexIndirections = 0; |
| |
| i915_use_passthrough_shader(ifs); |
| } |
| else { |
| p->NumNativeInstructions |
| = p->nr_alu_insn + p->nr_tex_insn + p->nr_decl_insn; |
| p->NumNativeAluInstructions = p->nr_alu_insn; |
| p->NumNativeTexInstructions = p->nr_tex_insn; |
| p->NumNativeTexIndirections = p->nr_tex_indirect; |
| |
| /* patch in the program length */ |
| p->declarations[0] |= program_size + decl_size - 2; |
| |
| /* Copy compilation results to fragment program struct: |
| */ |
| assert(!ifs->decl); |
| assert(!ifs->program); |
| |
| ifs->decl |
| = (uint *) MALLOC(decl_size * sizeof(uint)); |
| ifs->program |
| = (uint *) MALLOC(program_size * sizeof(uint)); |
| |
| if (ifs->decl) { |
| ifs->decl_len = decl_size; |
| |
| memcpy(ifs->decl, |
| p->declarations, |
| decl_size * sizeof(uint)); |
| } |
| |
| if (ifs->program) { |
| ifs->program_len = program_size; |
| |
| memcpy(ifs->program, |
| p->program, |
| program_size * sizeof(uint)); |
| } |
| } |
| |
| /* Release the compilation struct: |
| */ |
| FREE(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 |
| i915_fixup_depth_write(struct i915_fp_compile *p) |
| { |
| /* XXX assuming pos/depth is always in output[0] */ |
| if (p->shader->info.output_semantic_name[0] == TGSI_SEMANTIC_POSITION) { |
| const uint depth = UREG(REG_TYPE_OD, 0); |
| |
| i915_emit_arith(p, |
| A0_MOV, /* opcode */ |
| depth, /* dest reg */ |
| A0_DEST_CHANNEL_W, /* write mask */ |
| 0, /* saturate? */ |
| swizzle(depth, X, Y, Z, Z), /* src0 */ |
| 0, 0 /* src1, src2 */); |
| } |
| } |
| |
| |
| void |
| i915_translate_fragment_program( struct i915_context *i915, |
| struct i915_fragment_shader *fs) |
| { |
| struct i915_fp_compile *p; |
| const struct tgsi_token *tokens = fs->state.tokens; |
| struct i915_token_list* i_tokens; |
| |
| #if 0 |
| tgsi_dump(tokens, 0); |
| #endif |
| |
| /* hw doesn't seem to like empty frag programs, even when the depth write |
| * fixup gets emitted below - may that one is fishy, too? */ |
| if (fs->info.num_instructions == 1) { |
| i915_use_passthrough_shader(fs); |
| |
| return; |
| } |
| |
| p = i915_init_compile(i915, fs); |
| |
| i_tokens = i915_optimize(tokens); |
| i915_translate_instructions(p, i_tokens, fs); |
| i915_fixup_depth_write(p); |
| |
| i915_fini_compile(i915, p); |
| i915_optimize_free(i_tokens); |
| |
| #if 0 |
| i915_disassemble_program(NULL, fs->program, fs->program_len); |
| #endif |
| } |
