diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_gs.c')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_gs.c | 338 |
1 files changed, 338 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_gs.c b/src/gallium/auxiliary/draw/draw_gs.c new file mode 100644 index 00000000000..5db2e755423 --- /dev/null +++ b/src/gallium/auxiliary/draw/draw_gs.c @@ -0,0 +1,338 @@ +/************************************************************************** + * + * Copyright 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, 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. + * + **************************************************************************/ + +#include "draw_gs.h" + +#include "draw_private.h" +#include "draw_context.h" + +#include "tgsi/tgsi_parse.h" +#include "tgsi/tgsi_exec.h" + +#include "pipe/p_shader_tokens.h" + +#include "util/u_math.h" +#include "util/u_memory.h" + +#define MAX_PRIM_VERTICES 6 +/* fixme: move it from here */ +#define MAX_PRIMITIVES 64 + +boolean +draw_gs_init( struct draw_context *draw ) +{ + draw->gs.machine = tgsi_exec_machine_create(); + if (!draw->gs.machine) + return FALSE; + + draw->gs.machine->Primitives = align_malloc( + MAX_PRIMITIVES * sizeof(struct tgsi_exec_vector), 16); + if (!draw->gs.machine->Primitives) + return FALSE; + memset(draw->gs.machine->Primitives, 0, + MAX_PRIMITIVES * sizeof(struct tgsi_exec_vector)); + + return TRUE; +} + + +void draw_gs_set_constants( struct draw_context *draw, + const float (*constants)[4], + unsigned size ) +{ +} + + +struct draw_geometry_shader * +draw_create_geometry_shader(struct draw_context *draw, + const struct pipe_shader_state *state) +{ + struct draw_geometry_shader *gs; + int i; + + gs = CALLOC_STRUCT(draw_geometry_shader); + + if (!gs) + return NULL; + + gs->state = *state; + gs->state.tokens = tgsi_dup_tokens(state->tokens); + if (!gs->state.tokens) { + FREE(gs); + return NULL; + } + + tgsi_scan_shader(state->tokens, &gs->info); + + /* setup the defaults */ + gs->input_primitive = PIPE_PRIM_TRIANGLES; + gs->output_primitive = PIPE_PRIM_TRIANGLE_STRIP; + gs->max_output_vertices = 32; + + for (i = 0; i < gs->info.num_properties; ++i) { + if (gs->info.properties[i].name == + TGSI_PROPERTY_GS_INPUT_PRIM) + gs->input_primitive = gs->info.properties[i].data[0]; + else if (gs->info.properties[i].name == + TGSI_PROPERTY_GS_OUTPUT_PRIM) + gs->output_primitive = gs->info.properties[i].data[0]; + else if (gs->info.properties[i].name == + TGSI_PROPERTY_GS_MAX_VERTICES) + gs->max_output_vertices = gs->info.properties[i].data[0]; + } + + gs->machine = draw->gs.machine; + + if (gs) + { + uint i; + for (i = 0; i < gs->info.num_outputs; i++) { + if (gs->info.output_semantic_name[i] == TGSI_SEMANTIC_POSITION && + gs->info.output_semantic_index[i] == 0) + gs->position_output = i; + } + } + + return gs; +} + +void draw_bind_geometry_shader(struct draw_context *draw, + struct draw_geometry_shader *dgs) +{ + draw_do_flush(draw, DRAW_FLUSH_STATE_CHANGE); + + if (dgs) { + draw->gs.geometry_shader = dgs; + draw->gs.num_gs_outputs = dgs->info.num_outputs; + draw->gs.position_output = dgs->position_output; + draw_geometry_shader_prepare(dgs, draw); + } + else { + draw->gs.geometry_shader = NULL; + draw->gs.num_gs_outputs = 0; + } +} + +void draw_delete_geometry_shader(struct draw_context *draw, + struct draw_geometry_shader *dgs) +{ + FREE(dgs); +} + +static INLINE int num_vertices_for_prim(int prim) +{ + switch(prim) { + case PIPE_PRIM_POINTS: + return 1; + case PIPE_PRIM_LINES: + return 2; + case PIPE_PRIM_LINE_LOOP: + return 2; + case PIPE_PRIM_LINE_STRIP: + return 2; + case PIPE_PRIM_TRIANGLES: + return 3; + case PIPE_PRIM_TRIANGLE_STRIP: + return 3; + case PIPE_PRIM_TRIANGLE_FAN: + return 3; + case PIPE_PRIM_LINES_ADJACENCY: + case PIPE_PRIM_LINE_STRIP_ADJACENCY: + return 4; + case PIPE_PRIM_TRIANGLES_ADJACENCY: + case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY: + return 6; + default: + assert(!"Bad geometry shader input"); + return 0; + } +} + +static void draw_fetch_geometry_input(struct draw_geometry_shader *shader, + int start_primitive, + int num_primitives, + const float (*input_ptr)[4], + unsigned input_vertex_stride, + unsigned inputs_from_vs) +{ + struct tgsi_exec_machine *machine = shader->machine; + unsigned slot, vs_slot, k, j; + unsigned num_vertices = num_vertices_for_prim(shader->input_primitive); + int idx = 0; + + for (slot = 0, vs_slot = 0; slot < shader->info.num_inputs; slot++) { + /*debug_printf("Slot = %d (semantic = %d)\n", slot, + shader->info.input_semantic_name[slot]);*/ + if (shader->info.input_semantic_name[slot] == + TGSI_SEMANTIC_PRIMID) { + for (j = 0; j < num_primitives; ++j) { + machine->Inputs[idx].xyzw[0].f[j] = (float)start_primitive + j; + machine->Inputs[idx].xyzw[1].f[j] = (float)start_primitive + j; + machine->Inputs[idx].xyzw[2].f[j] = (float)start_primitive + j; + machine->Inputs[idx].xyzw[3].f[j] = (float)start_primitive + j; + } + ++idx; + } else { + for (j = 0; j < num_primitives; ++j) { + int vidx = idx; + const float (*prim_ptr)[4]; + /*debug_printf(" %d) Prim (num_verts = %d)\n", start_primitive + j, + num_vertices);*/ + prim_ptr = (const float (*)[4])( + (const char *)input_ptr + + (j * num_vertices * input_vertex_stride)); + + for (k = 0; k < num_vertices; ++k, ++vidx) { + const float (*input)[4]; + input = (const float (*)[4])( + (const char *)prim_ptr + (k * input_vertex_stride)); + vidx = k * TGSI_EXEC_MAX_INPUT_ATTRIBS + slot; + /*debug_printf("\t%d)(%d) Input vert:\n", vidx, k);*/ +#if 1 + assert(!util_is_inf_or_nan(input[vs_slot][0])); + assert(!util_is_inf_or_nan(input[vs_slot][1])); + assert(!util_is_inf_or_nan(input[vs_slot][2])); + assert(!util_is_inf_or_nan(input[vs_slot][3])); +#endif + machine->Inputs[vidx].xyzw[0].f[j] = input[vs_slot][0]; + machine->Inputs[vidx].xyzw[1].f[j] = input[vs_slot][1]; + machine->Inputs[vidx].xyzw[2].f[j] = input[vs_slot][2]; + machine->Inputs[vidx].xyzw[3].f[j] = input[vs_slot][3]; +#if 0 + debug_printf("\t\t%d %f %f %f %f\n", slot, + machine->Inputs[vidx].xyzw[0].f[j], + machine->Inputs[vidx].xyzw[1].f[j], + machine->Inputs[vidx].xyzw[2].f[j], + machine->Inputs[vidx].xyzw[3].f[j]); +#endif + } + } + ++vs_slot; + idx += num_vertices; + } + } +} + +static INLINE void +draw_geometry_fetch_outputs(struct draw_geometry_shader *shader, + int num_primitives, + float (*output)[4], + unsigned vertex_size) +{ + struct tgsi_exec_machine *machine = shader->machine; + unsigned prim_idx, j, slot; + + /* Unswizzle all output results. + */ + /* FIXME: handle all the primitives produced by the gs, not just + * the first one + unsigned prim_count = + mach->Temps[TEMP_PRIMITIVE_I].xyzw[TEMP_PRIMITIVE_C].u[0];*/ + for (prim_idx = 0; prim_idx < num_primitives; ++prim_idx) { + unsigned num_verts_per_prim = machine->Primitives[0]; + for (j = 0; j < num_verts_per_prim; j++) { + int idx = (prim_idx * num_verts_per_prim + j) * + shader->info.num_outputs; +#ifdef DEBUG_OUTPUTS + debug_printf("%d) Output vert:\n", idx); +#endif + for (slot = 0; slot < shader->info.num_outputs; slot++) { + output[slot][0] = machine->Outputs[idx + slot].xyzw[0].f[prim_idx]; + output[slot][1] = machine->Outputs[idx + slot].xyzw[1].f[prim_idx]; + output[slot][2] = machine->Outputs[idx + slot].xyzw[2].f[prim_idx]; + output[slot][3] = machine->Outputs[idx + slot].xyzw[3].f[prim_idx]; +#ifdef DEBUG_OUTPUTS + debug_printf("\t%d: %f %f %f %f\n", slot, + output[slot][0], + output[slot][1], + output[slot][2], + output[slot][3]); +#endif + debug_assert(!util_is_inf_or_nan(output[slot][0])); + } + output = (float (*)[4])((char *)output + vertex_size); + } + } +} + +void draw_geometry_shader_run(struct draw_geometry_shader *shader, + const float (*input)[4], + float (*output)[4], + const float (*constants)[4], + unsigned count, + unsigned input_stride, + unsigned vertex_size) +{ + struct tgsi_exec_machine *machine = shader->machine; + unsigned int i; + unsigned num_vertices = num_vertices_for_prim(shader->input_primitive); + unsigned num_primitives = count/num_vertices; + unsigned inputs_from_vs = 0; + + machine->Consts = constants; + + for (i = 0; i < shader->info.num_inputs; ++i) { + if (shader->info.input_semantic_name[i] != TGSI_SEMANTIC_PRIMID) + ++inputs_from_vs; + } + + for (i = 0; i < num_primitives; ++i) { + unsigned int max_primitives = 1; + + draw_fetch_geometry_input(shader, i, max_primitives, input, + input_stride, inputs_from_vs); + + tgsi_set_exec_mask(machine, + 1, + max_primitives > 1, + max_primitives > 2, + max_primitives > 3); + + /* run interpreter */ + tgsi_exec_machine_run(machine); + + draw_geometry_fetch_outputs(shader, max_primitives, + output, vertex_size); + } +} + +void draw_geometry_shader_delete(struct draw_geometry_shader *shader) +{ + FREE((void*) shader->state.tokens); + FREE(shader); +} + +void draw_geometry_shader_prepare(struct draw_geometry_shader *shader, + struct draw_context *draw) +{ + if (shader->machine->Tokens != shader->state.tokens) { + tgsi_exec_machine_bind_shader(shader->machine, + shader->state.tokens, + draw->gs.num_samplers, + draw->gs.samplers); + } +} |