diff options
Diffstat (limited to 'src/mesa/state_tracker/st_program.c')
| -rw-r--r-- | src/mesa/state_tracker/st_program.c | 511 |
1 files changed, 511 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_program.c b/src/mesa/state_tracker/st_program.c new file mode 100644 index 0000000000..936a6e32ea --- /dev/null +++ b/src/mesa/state_tracker/st_program.c @@ -0,0 +1,511 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + /* + * Authors: + * Keith Whitwell <keith@tungstengraphics.com> + * Brian Paul + */ + + +#include "main/imports.h" +#include "main/mtypes.h" +#include "shader/prog_print.h" +#include "shader/programopt.h" + +#include "pipe/p_context.h" +#include "pipe/p_defines.h" +#include "pipe/p_shader_tokens.h" +#include "draw/draw_context.h" +#include "tgsi/tgsi_dump.h" + +#include "st_context.h" +#include "st_atom.h" +#include "st_program.h" +#include "st_mesa_to_tgsi.h" +#include "cso_cache/cso_context.h" + + +#define ST_MAX_SHADER_TOKENS 4096 + + +#define TGSI_DEBUG 0 + + +/** XXX we should use the version of this from u_memory.h but including + * that header causes symbol collisions. + */ +static INLINE void * +mem_dup(const void *src, uint size) +{ + void *dup = MALLOC(size); + if (dup) + memcpy(dup, src, size); + return dup; +} + + + +/** + * Translate a Mesa vertex shader into a TGSI shader. + * \param outputMapping to map vertex program output registers (VERT_RESULT_x) + * to TGSI output slots + * \param tokensOut destination for TGSI tokens + * \return pointer to cached pipe_shader object. + */ +void +st_translate_vertex_program(struct st_context *st, + struct st_vertex_program *stvp, + const GLuint outputMapping[], + const ubyte *outputSemanticName, + const ubyte *outputSemanticIndex) +{ + struct pipe_context *pipe = st->pipe; + struct tgsi_token tokens[ST_MAX_SHADER_TOKENS]; + GLuint defaultOutputMapping[VERT_RESULT_MAX]; + struct pipe_shader_state vs; + GLuint attr, i; + GLuint num_generic = 0; + GLuint num_tokens; + + ubyte vs_input_semantic_name[PIPE_MAX_SHADER_INPUTS]; + ubyte vs_input_semantic_index[PIPE_MAX_SHADER_INPUTS]; + uint vs_num_inputs = 0; + + ubyte vs_output_semantic_name[PIPE_MAX_SHADER_OUTPUTS]; + ubyte vs_output_semantic_index[PIPE_MAX_SHADER_OUTPUTS]; + uint vs_num_outputs = 0; + + memset(&vs, 0, sizeof(vs)); + + if (stvp->Base.IsPositionInvariant) + _mesa_insert_mvp_code(st->ctx, &stvp->Base); + + /* + * Determine number of inputs, the mappings between VERT_ATTRIB_x + * and TGSI generic input indexes, plus input attrib semantic info. + */ + for (attr = 0; attr < VERT_ATTRIB_MAX; attr++) { + if (stvp->Base.Base.InputsRead & (1 << attr)) { + const GLuint slot = vs_num_inputs; + + vs_num_inputs++; + + stvp->input_to_index[attr] = slot; + stvp->index_to_input[slot] = attr; + + switch (attr) { + case VERT_ATTRIB_POS: + vs_input_semantic_name[slot] = TGSI_SEMANTIC_POSITION; + vs_input_semantic_index[slot] = 0; + break; + case VERT_ATTRIB_WEIGHT: + /* fall-through */ + case VERT_ATTRIB_NORMAL: + /* just label as a generic */ + vs_input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; + vs_input_semantic_index[slot] = 0; + break; + case VERT_ATTRIB_COLOR0: + vs_input_semantic_name[slot] = TGSI_SEMANTIC_COLOR; + vs_input_semantic_index[slot] = 0; + break; + case VERT_ATTRIB_COLOR1: + vs_input_semantic_name[slot] = TGSI_SEMANTIC_COLOR; + vs_input_semantic_index[slot] = 1; + break; + case VERT_ATTRIB_FOG: + vs_input_semantic_name[slot] = TGSI_SEMANTIC_FOG; + vs_input_semantic_index[slot] = 0; + break; + case VERT_ATTRIB_POINT_SIZE: + vs_input_semantic_name[slot] = TGSI_SEMANTIC_PSIZE; + vs_input_semantic_index[slot] = 0; + break; + case VERT_ATTRIB_TEX0: + case VERT_ATTRIB_TEX1: + case VERT_ATTRIB_TEX2: + case VERT_ATTRIB_TEX3: + case VERT_ATTRIB_TEX4: + case VERT_ATTRIB_TEX5: + case VERT_ATTRIB_TEX6: + case VERT_ATTRIB_TEX7: + vs_input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; + vs_input_semantic_index[slot] = num_generic++; + break; + case VERT_ATTRIB_GENERIC0: + case VERT_ATTRIB_GENERIC1: + case VERT_ATTRIB_GENERIC2: + case VERT_ATTRIB_GENERIC3: + case VERT_ATTRIB_GENERIC4: + case VERT_ATTRIB_GENERIC5: + case VERT_ATTRIB_GENERIC6: + case VERT_ATTRIB_GENERIC7: + assert(attr < VERT_ATTRIB_MAX); + vs_input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; + vs_input_semantic_index[slot] = num_generic++; + break; + default: + assert(0); + } + } + } + +#if 0 + if (outputMapping && outputSemanticName) { + printf("VERT_RESULT written out_slot semantic_name semantic_index\n"); + for (attr = 0; attr < VERT_RESULT_MAX; attr++) { + printf(" %-2d %c %3d %2d %2d\n", + attr, + ((stvp->Base.Base.OutputsWritten & (1 << attr)) ? 'Y' : ' '), + outputMapping[attr], + outputSemanticName[attr], + outputSemanticIndex[attr]); + } + } +#endif + + /* initialize output semantics to defaults */ + for (i = 0; i < PIPE_MAX_SHADER_OUTPUTS; i++) { + vs_output_semantic_name[i] = TGSI_SEMANTIC_GENERIC; + vs_output_semantic_index[i] = 0; + } + + num_generic = 0; + /* + * Determine number of outputs, the (default) output register + * mapping and the semantic information for each output. + */ + for (attr = 0; attr < VERT_RESULT_MAX; attr++) { + if (stvp->Base.Base.OutputsWritten & (1 << attr)) { + GLuint slot; + + /* XXX + * Pass in the fragment program's input's semantic info. + * Use the generic semantic indexes from there, instead of + * guessing below. + */ + + if (outputMapping) { + slot = outputMapping[attr]; + assert(slot != ~0); + } + else { + slot = vs_num_outputs; + vs_num_outputs++; + defaultOutputMapping[attr] = slot; + } + + switch (attr) { + case VERT_RESULT_HPOS: + assert(slot == 0); + vs_output_semantic_name[slot] = TGSI_SEMANTIC_POSITION; + vs_output_semantic_index[slot] = 0; + break; + case VERT_RESULT_COL0: + vs_output_semantic_name[slot] = TGSI_SEMANTIC_COLOR; + vs_output_semantic_index[slot] = 0; + break; + case VERT_RESULT_COL1: + vs_output_semantic_name[slot] = TGSI_SEMANTIC_COLOR; + vs_output_semantic_index[slot] = 1; + break; + case VERT_RESULT_BFC0: + vs_output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR; + vs_output_semantic_index[slot] = 0; + break; + case VERT_RESULT_BFC1: + vs_output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR; + vs_output_semantic_index[slot] = 1; + break; + case VERT_RESULT_FOGC: + vs_output_semantic_name[slot] = TGSI_SEMANTIC_FOG; + vs_output_semantic_index[slot] = 0; + break; + case VERT_RESULT_PSIZ: + vs_output_semantic_name[slot] = TGSI_SEMANTIC_PSIZE; + vs_output_semantic_index[slot] = 0; + break; + case VERT_RESULT_EDGE: + assert(0); + break; + case VERT_RESULT_TEX0: + case VERT_RESULT_TEX1: + case VERT_RESULT_TEX2: + case VERT_RESULT_TEX3: + case VERT_RESULT_TEX4: + case VERT_RESULT_TEX5: + case VERT_RESULT_TEX6: + case VERT_RESULT_TEX7: + /* fall-through */ + case VERT_RESULT_VAR0: + /* fall-through */ + default: + if (outputSemanticName) { + /* use provided semantic into */ + assert(outputSemanticName[attr] != TGSI_SEMANTIC_COUNT); + vs_output_semantic_name[slot] = outputSemanticName[attr]; + vs_output_semantic_index[slot] = outputSemanticIndex[attr]; + } + else { + /* use default semantic info */ + vs_output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; + vs_output_semantic_index[slot] = num_generic++; + } + } + } + } + + assert(vs_output_semantic_name[0] == TGSI_SEMANTIC_POSITION); + + + if (outputMapping) { + /* find max output slot referenced to compute vs_num_outputs */ + GLuint maxSlot = 0; + for (attr = 0; attr < VERT_RESULT_MAX; attr++) { + if (outputMapping[attr] != ~0 && outputMapping[attr] > maxSlot) + maxSlot = outputMapping[attr]; + } + vs_num_outputs = maxSlot + 1; + } + else { + outputMapping = defaultOutputMapping; + } + + /* free old shader state, if any */ + if (stvp->state.tokens) { + FREE((void *) stvp->state.tokens); + stvp->state.tokens = NULL; + } + if (stvp->driver_shader) { + cso_delete_vertex_shader(st->cso_context, stvp->driver_shader); + stvp->driver_shader = NULL; + } + + /* XXX: fix static allocation of tokens: + */ + num_tokens = tgsi_translate_mesa_program( TGSI_PROCESSOR_VERTEX, + &stvp->Base.Base, + /* inputs */ + vs_num_inputs, + stvp->input_to_index, + vs_input_semantic_name, + vs_input_semantic_index, + NULL, + /* outputs */ + vs_num_outputs, + outputMapping, + vs_output_semantic_name, + vs_output_semantic_index, + /* tokenized result */ + tokens, ST_MAX_SHADER_TOKENS); + + assert(num_tokens < ST_MAX_SHADER_TOKENS); + + vs.tokens = (struct tgsi_token *) + mem_dup(tokens, num_tokens * sizeof(tokens[0])); + + stvp->num_inputs = vs_num_inputs; + stvp->state = vs; /* struct copy */ + stvp->driver_shader = pipe->create_vs_state(pipe, &vs); + + if (0) + _mesa_print_program(&stvp->Base.Base); + + if (TGSI_DEBUG) + tgsi_dump( vs.tokens, 0 ); +} + + + +/** + * Translate a Mesa fragment shader into a TGSI shader. + * \param inputMapping to map fragment program input registers to TGSI + * input slots + * \param tokensOut destination for TGSI tokens + * \return pointer to cached pipe_shader object. + */ +void +st_translate_fragment_program(struct st_context *st, + struct st_fragment_program *stfp, + const GLuint inputMapping[]) +{ + struct pipe_context *pipe = st->pipe; + struct tgsi_token tokens[ST_MAX_SHADER_TOKENS]; + GLuint outputMapping[FRAG_RESULT_MAX]; + GLuint defaultInputMapping[FRAG_ATTRIB_MAX]; + struct pipe_shader_state fs; + GLuint interpMode[16]; /* XXX size? */ + GLuint attr; + const GLbitfield inputsRead = stfp->Base.Base.InputsRead; + GLuint vslot = 0; + GLuint num_generic = 0; + GLuint num_tokens; + + uint fs_num_inputs = 0; + + ubyte fs_output_semantic_name[PIPE_MAX_SHADER_OUTPUTS]; + ubyte fs_output_semantic_index[PIPE_MAX_SHADER_OUTPUTS]; + uint fs_num_outputs = 0; + + memset(&fs, 0, sizeof(fs)); + + /* which vertex output goes to the first fragment input: */ + if (inputsRead & FRAG_BIT_WPOS) + vslot = 0; + else + vslot = 1; + + /* + * Convert Mesa program inputs to TGSI input register semantics. + */ + for (attr = 0; attr < FRAG_ATTRIB_MAX; attr++) { + if (inputsRead & (1 << attr)) { + const GLuint slot = fs_num_inputs; + + defaultInputMapping[attr] = slot; + + stfp->input_map[slot] = vslot++; + + fs_num_inputs++; + + switch (attr) { + case FRAG_ATTRIB_WPOS: + stfp->input_semantic_name[slot] = TGSI_SEMANTIC_POSITION; + stfp->input_semantic_index[slot] = 0; + interpMode[slot] = TGSI_INTERPOLATE_LINEAR; + break; + case FRAG_ATTRIB_COL0: + stfp->input_semantic_name[slot] = TGSI_SEMANTIC_COLOR; + stfp->input_semantic_index[slot] = 0; + interpMode[slot] = TGSI_INTERPOLATE_LINEAR; + break; + case FRAG_ATTRIB_COL1: + stfp->input_semantic_name[slot] = TGSI_SEMANTIC_COLOR; + stfp->input_semantic_index[slot] = 1; + interpMode[slot] = TGSI_INTERPOLATE_LINEAR; + break; + case FRAG_ATTRIB_FOGC: + stfp->input_semantic_name[slot] = TGSI_SEMANTIC_FOG; + stfp->input_semantic_index[slot] = 0; + interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE; + 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: + stfp->input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; + stfp->input_semantic_index[slot] = num_generic++; + interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE; + break; + case FRAG_ATTRIB_VAR0: + /* fall-through */ + default: + stfp->input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; + stfp->input_semantic_index[slot] = num_generic++; + interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE; + } + } + } + + /* + * Semantics and mapping for outputs + */ + { + uint numColors = 0; + GLbitfield outputsWritten = stfp->Base.Base.OutputsWritten; + + /* if z is written, emit that first */ + if (outputsWritten & (1 << FRAG_RESULT_DEPR)) { + fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_POSITION; + fs_output_semantic_index[fs_num_outputs] = 0; + outputMapping[FRAG_RESULT_DEPR] = fs_num_outputs; + fs_num_outputs++; + outputsWritten &= ~(1 << FRAG_RESULT_DEPR); + } + + /* handle remaning outputs (color) */ + for (attr = 0; attr < FRAG_RESULT_MAX; attr++) { + if (outputsWritten & (1 << attr)) { + switch (attr) { + case FRAG_RESULT_DEPR: + /* handled above */ + assert(0); + break; + case FRAG_RESULT_COLR: + fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_COLOR; + fs_output_semantic_index[fs_num_outputs] = numColors; + outputMapping[attr] = fs_num_outputs; + numColors++; + break; + default: + assert(0); + } + fs_num_outputs++; + } + } + } + + if (!inputMapping) + inputMapping = defaultInputMapping; + + /* XXX: fix static allocation of tokens: + */ + num_tokens = tgsi_translate_mesa_program( TGSI_PROCESSOR_FRAGMENT, + &stfp->Base.Base, + /* inputs */ + fs_num_inputs, + inputMapping, + stfp->input_semantic_name, + stfp->input_semantic_index, + interpMode, + /* outputs */ + fs_num_outputs, + outputMapping, + fs_output_semantic_name, + fs_output_semantic_index, + /* tokenized result */ + tokens, ST_MAX_SHADER_TOKENS); + + assert(num_tokens < ST_MAX_SHADER_TOKENS); + + fs.tokens = (struct tgsi_token *) + mem_dup(tokens, num_tokens * sizeof(tokens[0])); + + stfp->state = fs; /* struct copy */ + stfp->driver_shader = pipe->create_fs_state(pipe, &fs); + + if (0) + _mesa_print_program(&stfp->Base.Base); + + if (TGSI_DEBUG) + tgsi_dump( fs.tokens, 0/*TGSI_DUMP_VERBOSE*/ ); +} + |