diff options
Diffstat (limited to 'src/gallium/drivers/svga/svga_tgsi_decl_sm20.c')
-rw-r--r-- | src/gallium/drivers/svga/svga_tgsi_decl_sm20.c | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_tgsi_decl_sm20.c b/src/gallium/drivers/svga/svga_tgsi_decl_sm20.c new file mode 100644 index 0000000..23b3ace --- /dev/null +++ b/src/gallium/drivers/svga/svga_tgsi_decl_sm20.c @@ -0,0 +1,280 @@ +/********************************************************** + * 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_shader_tokens.h" +#include "tgsi/tgsi_parse.h" +#include "util/u_memory.h" + +#include "svga_tgsi_emit.h" +#include "svga_context.h" + + + + +static boolean ps20_input( struct svga_shader_emitter *emit, + struct tgsi_declaration_semantic semantic, + unsigned idx ) +{ + struct src_register reg; + SVGA3DOpDclArgs dcl; + SVGA3dShaderInstToken opcode; + + opcode = inst_token( SVGA3DOP_DCL ); + dcl.values[0] = 0; + dcl.values[1] = 0; + + switch (semantic.Name) { + case TGSI_SEMANTIC_POSITION: + /* Special case: + */ + reg = src_register( SVGA3DREG_MISCTYPE, + SVGA3DMISCREG_POSITION ); + break; + case TGSI_SEMANTIC_COLOR: + reg = src_register( SVGA3DREG_INPUT, + semantic.Index ); + break; + case TGSI_SEMANTIC_FOG: + assert(semantic.Index == 0); + reg = src_register( SVGA3DREG_TEXTURE, 0 ); + break; + case TGSI_SEMANTIC_GENERIC: + reg = src_register( SVGA3DREG_TEXTURE, + semantic.Index + 1 ); + break; + default: + assert(0); + return TRUE; + } + + emit->input_map[idx] = reg; + + dcl.dst = dst( reg ); + + dcl.usage = 0; + dcl.index = 0; + + dcl.values[0] |= 1<<31; + + return (emit_instruction(emit, opcode) && + svga_shader_emit_dwords( emit, dcl.values, Elements(dcl.values))); +} + + +static boolean ps20_output( struct svga_shader_emitter *emit, + struct tgsi_declaration_semantic semantic, + unsigned idx ) +{ + SVGA3dShaderDestToken reg; + + switch (semantic.Name) { + case TGSI_SEMANTIC_COLOR: + if (semantic.Index < PIPE_MAX_COLOR_BUFS) { + unsigned cbuf = semantic.Index; + + emit->output_map[idx] = dst_register( SVGA3DREG_TEMP, + emit->nr_hw_temp++ ); + emit->temp_col[cbuf] = emit->output_map[idx]; + emit->true_col[cbuf] = dst_register( SVGA3DREG_COLOROUT, + semantic.Index ); + } + else { + assert(0); + reg = dst_register( SVGA3DREG_COLOROUT, 0 ); + } + break; + case TGSI_SEMANTIC_POSITION: + emit->output_map[idx] = dst_register( SVGA3DREG_TEMP, + emit->nr_hw_temp++ ); + emit->temp_pos = emit->output_map[idx]; + emit->true_pos = dst_register( SVGA3DREG_DEPTHOUT, + semantic.Index ); + break; + default: + assert(0); + reg = dst_register( SVGA3DREG_COLOROUT, 0 ); + break; + } + + return TRUE; +} + + +static boolean vs20_input( struct svga_shader_emitter *emit, + struct tgsi_declaration_semantic semantic, + unsigned idx ) +{ + SVGA3DOpDclArgs dcl; + SVGA3dShaderInstToken opcode; + + opcode = inst_token( SVGA3DOP_DCL ); + dcl.values[0] = 0; + dcl.values[1] = 0; + + emit->input_map[idx] = src_register( SVGA3DREG_INPUT, idx ); + dcl.dst = dst_register( SVGA3DREG_INPUT, idx ); + + assert(dcl.dst.reserved0); + + /* Mesa doesn't provide use with VS input semantics (they're + * actually pretty meaningless), so we just generate some plausible + * ones here. This has to match what we declare in the vdecl code + * in svga_pipe_vertex.c. + */ + if (idx == 0) { + dcl.usage = SVGA3D_DECLUSAGE_POSITION; + dcl.index = 0; + } + else { + dcl.usage = SVGA3D_DECLUSAGE_TEXCOORD; + dcl.index = idx - 1; + } + + dcl.values[0] |= 1<<31; + + return (emit_instruction(emit, opcode) && + svga_shader_emit_dwords( emit, dcl.values, Elements(dcl.values))); +} + + +static boolean vs20_output( struct svga_shader_emitter *emit, + struct tgsi_declaration_semantic semantic, + unsigned idx ) +{ + /* Don't emit dcl instruction for vs20 inputs + */ + + /* Just build the register map table: + */ + switch (semantic.Name) { + case TGSI_SEMANTIC_POSITION: + assert(semantic.Index == 0); + emit->output_map[idx] = dst_register( SVGA3DREG_TEMP, + emit->nr_hw_temp++ ); + emit->temp_pos = emit->output_map[idx]; + emit->true_pos = dst_register( SVGA3DREG_RASTOUT, + SVGA3DRASTOUT_POSITION); + break; + case TGSI_SEMANTIC_PSIZE: + assert(semantic.Index == 0); + emit->output_map[idx] = dst_register( SVGA3DREG_TEMP, + emit->nr_hw_temp++ ); + emit->temp_psiz = emit->output_map[idx]; + emit->true_psiz = dst_register( SVGA3DREG_RASTOUT, + SVGA3DRASTOUT_PSIZE ); + break; + case TGSI_SEMANTIC_FOG: + assert(semantic.Index == 0); + emit->output_map[idx] = dst_register( SVGA3DREG_TEXCRDOUT, 0 ); + break; + case TGSI_SEMANTIC_COLOR: + /* oD0 */ + emit->output_map[idx] = dst_register( SVGA3DREG_ATTROUT, + semantic.Index ); + break; + case TGSI_SEMANTIC_GENERIC: + emit->output_map[idx] = dst_register( SVGA3DREG_TEXCRDOUT, + semantic.Index + 1 ); + break; + default: + assert(0); + emit->output_map[idx] = dst_register( SVGA3DREG_TEMP, 0 ); + return FALSE; + } + + return TRUE; +} + +static boolean ps20_sampler( struct svga_shader_emitter *emit, + struct tgsi_declaration_semantic semantic, + unsigned idx ) +{ + SVGA3DOpDclArgs dcl; + SVGA3dShaderInstToken opcode; + + opcode = inst_token( SVGA3DOP_DCL ); + dcl.values[0] = 0; + dcl.values[1] = 0; + + dcl.dst = dst_register( SVGA3DREG_SAMPLER, idx ); + dcl.type = svga_tgsi_sampler_type( emit, idx ); + + return (emit_instruction(emit, opcode) && + svga_shader_emit_dwords( emit, dcl.values, Elements(dcl.values))); +} + + +boolean svga_translate_decl_sm20( struct svga_shader_emitter *emit, + const struct tgsi_full_declaration *decl ) +{ + unsigned first = decl->Range.First; + unsigned last = decl->Range.Last; + unsigned semantic = 0; + unsigned semantic_idx = 0; + unsigned idx; + + if (decl->Declaration.Semantic) { + semantic = decl->Semantic.Name; + semantic_idx = decl->Semantic.Index; + } + + for( idx = first; idx <= last; idx++ ) { + boolean ok; + + switch (decl->Declaration.File) { + case TGSI_FILE_SAMPLER: + assert (emit->unit == PIPE_SHADER_FRAGMENT); + ok = ps20_sampler( emit, decl->Semantic, idx ); + break; + + case TGSI_FILE_INPUT: + if (emit->unit == PIPE_SHADER_VERTEX) + ok = vs20_input( emit, decl->Semantic, idx ); + else + ok = ps20_input( emit, decl->Semantic, idx ); + break; + + case TGSI_FILE_OUTPUT: + if (emit->unit == PIPE_SHADER_VERTEX) + ok = vs20_output( emit, decl->Semantic, idx ); + else + ok = ps20_output( emit, decl->Semantic, idx ); + break; + + default: + /* don't need to declare other vars */ + ok = TRUE; + } + + if (!ok) + return FALSE; + } + + return TRUE; +} + + + |