| /************************************************************************** |
| * |
| * 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_debug.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" |
| |
| |
| |
| /** |
| * Clean out any old compilations: |
| */ |
| void |
| st_vp_release_varients( struct st_context *st, |
| struct st_vertex_program *stvp ) |
| { |
| struct st_vp_varient *vpv; |
| |
| for (vpv = stvp->varients; vpv; ) { |
| struct st_vp_varient *next = vpv->next; |
| |
| if (vpv->driver_shader) |
| cso_delete_vertex_shader(st->cso_context, vpv->driver_shader); |
| |
| if (vpv->draw_shader) |
| draw_delete_vertex_shader( st->draw, vpv->draw_shader ); |
| |
| if (vpv->state.tokens) |
| st_free_tokens(vpv->state.tokens); |
| |
| FREE( vpv ); |
| |
| vpv = next; |
| } |
| |
| stvp->varients = NULL; |
| } |
| |
| |
| |
| |
| /** |
| * 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_prepare_vertex_program(struct st_context *st, |
| struct st_vertex_program *stvp) |
| { |
| GLuint attr; |
| |
| stvp->num_inputs = 0; |
| stvp->num_outputs = 0; |
| |
| if (stvp->Base.IsPositionInvariant) |
| _mesa_insert_mvp_code(st->ctx, &stvp->Base); |
| |
| assert(stvp->Base.Base.NumInstructions > 1); |
| |
| /* |
| * 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)) { |
| stvp->input_to_index[attr] = stvp->num_inputs; |
| stvp->index_to_input[stvp->num_inputs] = attr; |
| stvp->num_inputs++; |
| } |
| } |
| /* bit of a hack, presetup potentially unused edgeflag input */ |
| stvp->input_to_index[VERT_ATTRIB_EDGEFLAG] = stvp->num_inputs; |
| stvp->index_to_input[stvp->num_inputs] = VERT_ATTRIB_EDGEFLAG; |
| |
| /* Compute mapping of vertex program outputs to slots. |
| */ |
| for (attr = 0; attr < VERT_RESULT_MAX; attr++) { |
| if ((stvp->Base.Base.OutputsWritten & (1 << attr)) == 0) { |
| stvp->result_to_output[attr] = ~0; |
| } |
| else { |
| unsigned slot = stvp->num_outputs++; |
| |
| stvp->result_to_output[attr] = slot; |
| |
| switch (attr) { |
| case VERT_RESULT_HPOS: |
| stvp->output_semantic_name[slot] = TGSI_SEMANTIC_POSITION; |
| stvp->output_semantic_index[slot] = 0; |
| break; |
| case VERT_RESULT_COL0: |
| stvp->output_semantic_name[slot] = TGSI_SEMANTIC_COLOR; |
| stvp->output_semantic_index[slot] = 0; |
| break; |
| case VERT_RESULT_COL1: |
| stvp->output_semantic_name[slot] = TGSI_SEMANTIC_COLOR; |
| stvp->output_semantic_index[slot] = 1; |
| break; |
| case VERT_RESULT_BFC0: |
| stvp->output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR; |
| stvp->output_semantic_index[slot] = 0; |
| break; |
| case VERT_RESULT_BFC1: |
| stvp->output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR; |
| stvp->output_semantic_index[slot] = 1; |
| break; |
| case VERT_RESULT_FOGC: |
| stvp->output_semantic_name[slot] = TGSI_SEMANTIC_FOG; |
| stvp->output_semantic_index[slot] = 0; |
| break; |
| case VERT_RESULT_PSIZ: |
| stvp->output_semantic_name[slot] = TGSI_SEMANTIC_PSIZE; |
| stvp->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: |
| stvp->output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; |
| stvp->output_semantic_index[slot] = attr - VERT_RESULT_TEX0; |
| break; |
| |
| case VERT_RESULT_VAR0: |
| default: |
| assert(attr < VERT_RESULT_MAX); |
| stvp->output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; |
| stvp->output_semantic_index[slot] = (FRAG_ATTRIB_VAR0 - |
| FRAG_ATTRIB_TEX0 + |
| attr - |
| VERT_RESULT_VAR0); |
| break; |
| } |
| } |
| } |
| /* similar hack to above, presetup potentially unused edgeflag output */ |
| stvp->result_to_output[VERT_RESULT_EDGE] = stvp->num_outputs; |
| stvp->output_semantic_name[stvp->num_outputs] = TGSI_SEMANTIC_EDGEFLAG; |
| stvp->output_semantic_index[stvp->num_outputs] = 0; |
| } |
| |
| |
| struct st_vp_varient * |
| st_translate_vertex_program(struct st_context *st, |
| struct st_vertex_program *stvp, |
| const struct st_vp_varient_key *key) |
| { |
| struct st_vp_varient *vpv = CALLOC_STRUCT(st_vp_varient); |
| struct pipe_context *pipe = st->pipe; |
| struct ureg_program *ureg; |
| enum pipe_error error; |
| unsigned num_outputs; |
| |
| ureg = ureg_create( TGSI_PROCESSOR_VERTEX ); |
| if (ureg == NULL) |
| return NULL; |
| |
| vpv->num_inputs = stvp->num_inputs; |
| num_outputs = stvp->num_outputs; |
| if (key->passthrough_edgeflags) { |
| vpv->num_inputs++; |
| num_outputs++; |
| } |
| |
| error = |
| st_translate_mesa_program(st->ctx, |
| TGSI_PROCESSOR_VERTEX, |
| ureg, |
| &stvp->Base.Base, |
| /* inputs */ |
| vpv->num_inputs, |
| stvp->input_to_index, |
| NULL, /* input semantic name */ |
| NULL, /* input semantic index */ |
| NULL, |
| /* outputs */ |
| num_outputs, |
| stvp->result_to_output, |
| stvp->output_semantic_name, |
| stvp->output_semantic_index, |
| key->passthrough_edgeflags ); |
| |
| if (error) |
| goto fail; |
| |
| vpv->state.tokens = ureg_get_tokens( ureg, NULL ); |
| if (!vpv->state.tokens) |
| goto fail; |
| |
| ureg_destroy( ureg ); |
| |
| vpv->driver_shader = pipe->create_vs_state(pipe, &vpv->state); |
| |
| if ((ST_DEBUG & DEBUG_TGSI) && (ST_DEBUG & DEBUG_MESA)) { |
| _mesa_print_program(&stvp->Base.Base); |
| debug_printf("\n"); |
| } |
| |
| if (ST_DEBUG & DEBUG_TGSI) { |
| tgsi_dump( vpv->state.tokens, 0 ); |
| debug_printf("\n"); |
| } |
| |
| return vpv; |
| |
| fail: |
| debug_printf("%s: failed to translate Mesa program:\n", __FUNCTION__); |
| _mesa_print_program(&stvp->Base.Base); |
| debug_assert(0); |
| |
| ureg_destroy( ureg ); |
| return NULL; |
| } |
| |
| |
| |
| /** |
| * Translate a Mesa fragment shader into a TGSI shader. |
| * \param inputMapping to map fragment program input registers to TGSI |
| * input slots |
| * \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; |
| GLuint outputMapping[FRAG_RESULT_MAX]; |
| GLuint defaultInputMapping[FRAG_ATTRIB_MAX]; |
| GLuint interpMode[16]; /* XXX size? */ |
| GLuint attr; |
| enum pipe_error error; |
| const GLbitfield inputsRead = stfp->Base.Base.InputsRead; |
| struct ureg_program *ureg; |
| GLuint vslot = 0; |
| |
| 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; |
| |
| /* 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_FACE: |
| stfp->input_semantic_name[slot] = TGSI_SEMANTIC_FACE; |
| stfp->input_semantic_index[slot] = 0; |
| interpMode[slot] = TGSI_INTERPOLATE_CONSTANT; |
| break; |
| |
| /* In most cases, there is nothing special about these |
| * inputs, so adopt a convention to use the generic |
| * semantic name and the mesa FRAG_ATTRIB_ number as the |
| * index. |
| * |
| * All that is required is that the vertex shader labels |
| * its own outputs similarly, and that the vertex shader |
| * generates at least every output required by the |
| * fragment shader plus fixed-function hardware (such as |
| * BFC). |
| * |
| * There is no requirement that semantic indexes start at |
| * zero or be restricted to a particular range -- nobody |
| * should be building tables based on semantic index. |
| */ |
| 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: |
| case FRAG_ATTRIB_PNTC: |
| case FRAG_ATTRIB_VAR0: |
| default: |
| /* Actually, let's try and zero-base this just for |
| * readability of the generated TGSI. |
| */ |
| assert(attr >= FRAG_ATTRIB_TEX0); |
| stfp->input_semantic_index[slot] = (attr - FRAG_ATTRIB_TEX0); |
| stfp->input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC; |
| interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE; |
| break; |
| } |
| } |
| } |
| |
| /* |
| * Semantics and mapping for outputs |
| */ |
| { |
| uint numColors = 0; |
| GLbitfield64 outputsWritten = stfp->Base.Base.OutputsWritten; |
| |
| /* if z is written, emit that first */ |
| if (outputsWritten & (1 << FRAG_RESULT_DEPTH)) { |
| fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_POSITION; |
| fs_output_semantic_index[fs_num_outputs] = 0; |
| outputMapping[FRAG_RESULT_DEPTH] = fs_num_outputs; |
| fs_num_outputs++; |
| outputsWritten &= ~(1 << FRAG_RESULT_DEPTH); |
| } |
| |
| /* handle remaning outputs (color) */ |
| for (attr = 0; attr < FRAG_RESULT_MAX; attr++) { |
| if (outputsWritten & (1 << attr)) { |
| switch (attr) { |
| case FRAG_RESULT_DEPTH: |
| /* handled above */ |
| assert(0); |
| break; |
| default: |
| assert(attr == FRAG_RESULT_COLOR || |
| (FRAG_RESULT_DATA0 <= attr && attr < FRAG_RESULT_MAX)); |
| 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; |
| } |
| |
| fs_num_outputs++; |
| } |
| } |
| } |
| |
| if (!inputMapping) |
| inputMapping = defaultInputMapping; |
| |
| ureg = ureg_create( TGSI_PROCESSOR_FRAGMENT ); |
| if (ureg == NULL) |
| return; |
| |
| |
| error = |
| st_translate_mesa_program(st->ctx, |
| TGSI_PROCESSOR_FRAGMENT, |
| ureg, |
| &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, FALSE ); |
| |
| stfp->state.tokens = ureg_get_tokens( ureg, NULL ); |
| ureg_destroy( ureg ); |
| stfp->driver_shader = pipe->create_fs_state(pipe, &stfp->state); |
| |
| if ((ST_DEBUG & DEBUG_TGSI) && (ST_DEBUG & DEBUG_MESA)) { |
| _mesa_print_program(&stfp->Base.Base); |
| debug_printf("\n"); |
| } |
| |
| if (ST_DEBUG & DEBUG_TGSI) { |
| tgsi_dump( stfp->state.tokens, 0/*TGSI_DUMP_VERBOSE*/ ); |
| debug_printf("\n"); |
| } |
| } |
| |
| |
| /** |
| * Debug- print current shader text |
| */ |
| void |
| st_print_shaders(GLcontext *ctx) |
| { |
| struct gl_shader_program *shProg = ctx->Shader.CurrentProgram; |
| if (shProg) { |
| GLuint i; |
| for (i = 0; i < shProg->NumShaders; i++) { |
| printf("GLSL shader %u of %u:\n", i, shProg->NumShaders); |
| printf("%s\n", shProg->Shaders[i]->Source); |
| } |
| } |
| } |