diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_vs_exec.c')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_vs_exec.c | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_vs_exec.c b/src/gallium/auxiliary/draw/draw_vs_exec.c new file mode 100644 index 0000000000..b3200df811 --- /dev/null +++ b/src/gallium/auxiliary/draw/draw_vs_exec.c @@ -0,0 +1,200 @@ +/************************************************************************** + * + * 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 "util/u_math.h" +#include "util/u_memory.h" +#include "pipe/p_shader_tokens.h" + +#include "draw_private.h" +#include "draw_context.h" +#include "draw_vs.h" + +#include "tgsi/tgsi_parse.h" +#include "tgsi/tgsi_scan.h" + + +struct exec_vertex_shader { + struct draw_vertex_shader base; + struct tgsi_exec_machine *machine; +}; + +static struct exec_vertex_shader *exec_vertex_shader( struct draw_vertex_shader *vs ) +{ + return (struct exec_vertex_shader *)vs; +} + + +/* Not required for run_linear. + */ +static void +vs_exec_prepare( struct draw_vertex_shader *shader, + struct draw_context *draw ) +{ + struct exec_vertex_shader *evs = exec_vertex_shader(shader); + + /* Specify the vertex program to interpret/execute. + * Avoid rebinding when possible. + */ + if (evs->machine->Tokens != shader->state.tokens) { + tgsi_exec_machine_bind_shader(evs->machine, + shader->state.tokens, + draw->vs.num_samplers, + draw->vs.samplers); + } +} + + + + +/* Simplified vertex shader interface for the pt paths. Given the + * complexity of code-generating all the above operations together, + * it's time to try doing all the other stuff separately. + */ +static void +vs_exec_run_linear( struct draw_vertex_shader *shader, + const float (*input)[4], + float (*output)[4], + const float (*constants)[4], + unsigned count, + unsigned input_stride, + unsigned output_stride ) +{ + struct exec_vertex_shader *evs = exec_vertex_shader(shader); + struct tgsi_exec_machine *machine = evs->machine; + unsigned int i, j; + unsigned slot; + + machine->Consts = constants; + + for (i = 0; i < count; i += MAX_TGSI_VERTICES) { + unsigned int max_vertices = MIN2(MAX_TGSI_VERTICES, count - i); + + /* Swizzle inputs. + */ + for (j = 0; j < max_vertices; j++) { +#if 0 + debug_printf("%d) Input vert:\n", i + j); + for (slot = 0; slot < shader->info.num_inputs; slot++) { + debug_printf("\t%d: %f %f %f %f\n", slot, + input[slot][0], + input[slot][1], + input[slot][2], + input[slot][3]); + } +#endif + + for (slot = 0; slot < shader->info.num_inputs; slot++) { + machine->Inputs[slot].xyzw[0].f[j] = input[slot][0]; + machine->Inputs[slot].xyzw[1].f[j] = input[slot][1]; + machine->Inputs[slot].xyzw[2].f[j] = input[slot][2]; + machine->Inputs[slot].xyzw[3].f[j] = input[slot][3]; + } + + input = (const float (*)[4])((const char *)input + input_stride); + } + + tgsi_set_exec_mask(machine, + 1, + max_vertices > 1, + max_vertices > 2, + max_vertices > 3); + + /* run interpreter */ + tgsi_exec_machine_run( machine ); + + /* Unswizzle all output results. + */ + for (j = 0; j < max_vertices; j++) { + for (slot = 0; slot < shader->info.num_outputs; slot++) { + output[slot][0] = machine->Outputs[slot].xyzw[0].f[j]; + output[slot][1] = machine->Outputs[slot].xyzw[1].f[j]; + output[slot][2] = machine->Outputs[slot].xyzw[2].f[j]; + output[slot][3] = machine->Outputs[slot].xyzw[3].f[j]; + + } + +#if 0 + debug_printf("%d) Post xform vert:\n", i + j); + for (slot = 0; slot < shader->info.num_outputs; slot++) { + debug_printf("\t%d: %f %f %f %f\n", slot, + output[slot][0], + output[slot][1], + output[slot][2], + output[slot][3]); + } +#endif + + output = (float (*)[4])((char *)output + output_stride); + } + + } +} + + + + +static void +vs_exec_delete( struct draw_vertex_shader *dvs ) +{ + FREE((void*) dvs->state.tokens); + FREE( dvs ); +} + + +struct draw_vertex_shader * +draw_create_vs_exec(struct draw_context *draw, + const struct pipe_shader_state *state) +{ + struct exec_vertex_shader *vs = CALLOC_STRUCT( exec_vertex_shader ); + + if (vs == NULL) + return NULL; + + /* we make a private copy of the tokens */ + vs->base.state.tokens = tgsi_dup_tokens(state->tokens); + if (!vs->base.state.tokens) { + FREE(vs); + return NULL; + } + + tgsi_scan_shader(state->tokens, &vs->base.info); + + vs->base.draw = draw; + vs->base.prepare = vs_exec_prepare; + vs->base.run_linear = vs_exec_run_linear; + vs->base.delete = vs_exec_delete; + vs->base.create_varient = draw_vs_varient_generic; + vs->machine = &draw->vs.machine; + + return &vs->base; +} |