| /********************************************************** |
| * Copyright 2008-2009 VMware, Inc. 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, sublicense, 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 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 |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * 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 "pipe/p_compiler.h" |
| #include "pipe/p_shader_tokens.h" |
| #include "pipe/p_defines.h" |
| #include "tgsi/tgsi_parse.h" |
| #include "tgsi/tgsi_dump.h" |
| #include "tgsi/tgsi_scan.h" |
| #include "util/u_memory.h" |
| #include "util/u_bitmask.h" |
| |
| #include "svgadump/svga_shader_dump.h" |
| |
| #include "svga_context.h" |
| #include "svga_tgsi.h" |
| #include "svga_tgsi_emit.h" |
| #include "svga_debug.h" |
| |
| #include "svga_hw_reg.h" |
| #include "svga3d_shaderdefs.h" |
| |
| |
| /* Sinkhole used only in error conditions. |
| */ |
| static char err_buf[128]; |
| |
| #if 0 |
| static void svga_destroy_shader_emitter( struct svga_shader_emitter *emit ) |
| { |
| if (emit->buf != err_buf) |
| FREE(emit->buf); |
| } |
| #endif |
| |
| |
| static boolean svga_shader_expand( struct svga_shader_emitter *emit ) |
| { |
| char *new_buf; |
| unsigned newsize = emit->size * 2; |
| |
| if(emit->buf != err_buf) |
| new_buf = REALLOC(emit->buf, emit->size, newsize); |
| else |
| new_buf = NULL; |
| |
| if (new_buf == NULL) { |
| emit->ptr = err_buf; |
| emit->buf = err_buf; |
| emit->size = sizeof(err_buf); |
| return FALSE; |
| } |
| |
| emit->size = newsize; |
| emit->ptr = new_buf + (emit->ptr - emit->buf); |
| emit->buf = new_buf; |
| return TRUE; |
| } |
| |
| static INLINE boolean reserve( struct svga_shader_emitter *emit, |
| unsigned nr_dwords ) |
| { |
| if (emit->ptr - emit->buf + nr_dwords * sizeof(unsigned) >= emit->size) { |
| if (!svga_shader_expand( emit )) |
| return FALSE; |
| } |
| |
| return TRUE; |
| } |
| |
| boolean svga_shader_emit_dword( struct svga_shader_emitter *emit, |
| unsigned dword ) |
| { |
| if (!reserve(emit, 1)) |
| return FALSE; |
| |
| *(unsigned *)emit->ptr = dword; |
| emit->ptr += sizeof dword; |
| return TRUE; |
| } |
| |
| boolean svga_shader_emit_dwords( struct svga_shader_emitter *emit, |
| const unsigned *dwords, |
| unsigned nr ) |
| { |
| if (!reserve(emit, nr)) |
| return FALSE; |
| |
| memcpy( emit->ptr, dwords, nr * sizeof *dwords ); |
| emit->ptr += nr * sizeof *dwords; |
| return TRUE; |
| } |
| |
| boolean svga_shader_emit_opcode( struct svga_shader_emitter *emit, |
| unsigned opcode ) |
| { |
| SVGA3dShaderInstToken *here; |
| |
| if (!reserve(emit, 1)) |
| return FALSE; |
| |
| here = (SVGA3dShaderInstToken *)emit->ptr; |
| here->value = opcode; |
| |
| if (emit->insn_offset) { |
| SVGA3dShaderInstToken *prev = (SVGA3dShaderInstToken *)(emit->buf + |
| emit->insn_offset); |
| prev->size = (here - prev) - 1; |
| } |
| |
| emit->insn_offset = emit->ptr - emit->buf; |
| emit->ptr += sizeof(unsigned); |
| return TRUE; |
| } |
| |
| #define SVGA3D_PS_2X (SVGA3D_PS_20 | 1) |
| #define SVGA3D_VS_2X (SVGA3D_VS_20 | 1) |
| |
| static boolean svga_shader_emit_header( struct svga_shader_emitter *emit ) |
| { |
| SVGA3dShaderVersion header; |
| |
| memset( &header, 0, sizeof header ); |
| |
| switch (emit->unit) { |
| case PIPE_SHADER_FRAGMENT: |
| header.value = emit->use_sm30 ? SVGA3D_PS_30 : SVGA3D_PS_2X; |
| break; |
| case PIPE_SHADER_VERTEX: |
| header.value = emit->use_sm30 ? SVGA3D_VS_30 : SVGA3D_VS_2X; |
| break; |
| } |
| |
| return svga_shader_emit_dword( emit, header.value ); |
| } |
| |
| |
| |
| |
| |
| /* Parse TGSI shader and translate to SVGA/DX9 serialized |
| * representation. |
| * |
| * In this function SVGA shader is emitted to an in-memory buffer that |
| * can be dynamically grown. Once we've finished and know how large |
| * it is, it will be copied to a hardware buffer for upload. |
| */ |
| static struct svga_shader_result * |
| svga_tgsi_translate( const struct svga_shader *shader, |
| union svga_compile_key key, |
| unsigned unit ) |
| { |
| struct svga_shader_result *result = NULL; |
| struct svga_shader_emitter emit; |
| int ret = 0; |
| |
| memset(&emit, 0, sizeof(emit)); |
| |
| emit.use_sm30 = shader->use_sm30; |
| emit.size = 1024; |
| emit.buf = MALLOC(emit.size); |
| if (emit.buf == NULL) { |
| ret = PIPE_ERROR_OUT_OF_MEMORY; |
| goto fail; |
| } |
| |
| emit.ptr = emit.buf; |
| emit.unit = unit; |
| emit.key = key; |
| |
| tgsi_scan_shader( shader->tokens, &emit.info); |
| |
| emit.imm_start = emit.info.file_max[TGSI_FILE_CONSTANT] + 1; |
| |
| if (unit == PIPE_SHADER_FRAGMENT) |
| emit.imm_start += key.fkey.num_unnormalized_coords; |
| |
| if (unit == PIPE_SHADER_VERTEX) { |
| emit.imm_start += key.vkey.need_prescale ? 2 : 0; |
| emit.imm_start += key.vkey.num_zero_stride_vertex_elements; |
| } |
| |
| emit.nr_hw_const = (emit.imm_start + emit.info.file_max[TGSI_FILE_IMMEDIATE] + 1); |
| |
| emit.nr_hw_temp = emit.info.file_max[TGSI_FILE_TEMPORARY] + 1; |
| emit.in_main_func = TRUE; |
| |
| if (!svga_shader_emit_header( &emit )) |
| goto fail; |
| |
| if (!svga_shader_emit_instructions( &emit, shader->tokens )) |
| goto fail; |
| |
| result = CALLOC_STRUCT(svga_shader_result); |
| if (result == NULL) |
| goto fail; |
| |
| result->shader = shader; |
| result->tokens = (const unsigned *)emit.buf; |
| result->nr_tokens = (emit.ptr - emit.buf) / sizeof(unsigned); |
| memcpy(&result->key, &key, sizeof key); |
| result->id = UTIL_BITMASK_INVALID_INDEX; |
| |
| if (SVGA_DEBUG & DEBUG_TGSI) |
| { |
| debug_printf( "#####################################\n" ); |
| debug_printf( "Shader %u below\n", shader->id ); |
| tgsi_dump( shader->tokens, 0 ); |
| if (SVGA_DEBUG & DEBUG_TGSI) { |
| debug_printf( "Shader %u compiled below\n", shader->id ); |
| svga_shader_dump( result->tokens, |
| result->nr_tokens , |
| FALSE ); |
| } |
| debug_printf( "#####################################\n" ); |
| } |
| |
| return result; |
| |
| fail: |
| FREE(result); |
| FREE(emit.buf); |
| return NULL; |
| } |
| |
| |
| |
| |
| struct svga_shader_result * |
| svga_translate_fragment_program( const struct svga_fragment_shader *fs, |
| const struct svga_fs_compile_key *fkey ) |
| { |
| union svga_compile_key key; |
| memcpy(&key.fkey, fkey, sizeof *fkey); |
| |
| return svga_tgsi_translate( &fs->base, |
| key, |
| PIPE_SHADER_FRAGMENT ); |
| } |
| |
| struct svga_shader_result * |
| svga_translate_vertex_program( const struct svga_vertex_shader *vs, |
| const struct svga_vs_compile_key *vkey ) |
| { |
| union svga_compile_key key; |
| memcpy(&key.vkey, vkey, sizeof *vkey); |
| |
| return svga_tgsi_translate( &vs->base, |
| key, |
| PIPE_SHADER_VERTEX ); |
| } |
| |
| |
| void svga_destroy_shader_result( struct svga_shader_result *result ) |
| { |
| FREE((unsigned *)result->tokens); |
| FREE(result); |
| } |
| |