/************************************************************************** * * 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" #include "util/u_prim.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_destroy( struct draw_context *draw ) { if (!draw->gs.machine) return; align_free(draw->gs.machine->Primitives); tgsi_exec_machine_destroy(draw->gs.machine); } void draw_gs_set_constants(struct draw_context *draw, unsigned slot, const void *constants, 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->draw = draw; 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_OUTPUT_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); } /*#define DEBUG_OUTPUTS 1*/ static INLINE void draw_geometry_fetch_outputs(struct draw_geometry_shader *shader, int num_primitives, float (**p_output)[4]) { struct tgsi_exec_machine *machine = shader->machine; unsigned prim_idx, j, slot; float (*output)[4]; output = *p_output; /* Unswizzle all output results. */ for (prim_idx = 0; prim_idx < num_primitives; ++prim_idx) { unsigned num_verts_per_prim = machine->Primitives[prim_idx]; shader->primitive_lengths[prim_idx + shader->emitted_primitives] = machine->Primitives[prim_idx]; shader->emitted_vertices += num_verts_per_prim; 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 / shader->info.num_outputs); #endif for (slot = 0; slot < shader->info.num_outputs; slot++) { output[slot][0] = machine->Outputs[idx + slot].xyzw[0].f[0]; output[slot][1] = machine->Outputs[idx + slot].xyzw[1].f[0]; output[slot][2] = machine->Outputs[idx + slot].xyzw[2].f[0]; output[slot][3] = machine->Outputs[idx + slot].xyzw[3].f[0]; #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 + shader->vertex_size); } } *p_output = output; shader->emitted_primitives += num_primitives; } static void draw_fetch_gs_input(struct draw_geometry_shader *shader, unsigned *indices, unsigned num_vertices, unsigned prim_idx) { struct tgsi_exec_machine *machine = shader->machine; unsigned slot, vs_slot, i; unsigned input_vertex_stride = shader->input_vertex_stride; const float (*input_ptr)[4]; input_ptr = shader->input; for (i = 0; i < num_vertices; ++i) { const float (*input)[4]; /*debug_printf("%d) vertex index = %d (prim idx = %d)\n", i, indices[i], prim_idx);*/ input = (const float (*)[4])( (const char *)input_ptr + (indices[i] * input_vertex_stride)); for (slot = 0, vs_slot = 0; slot < shader->info.num_inputs; ++slot) { unsigned idx = i * TGSI_EXEC_MAX_INPUT_ATTRIBS + slot; if (shader->info.input_semantic_name[slot] == TGSI_SEMANTIC_PRIMID) { machine->Inputs[idx].xyzw[0].f[prim_idx] = (float)shader->in_prim_idx; machine->Inputs[idx].xyzw[1].f[prim_idx] = (float)shader->in_prim_idx; machine->Inputs[idx].xyzw[2].f[prim_idx] = (float)shader->in_prim_idx; machine->Inputs[idx].xyzw[3].f[prim_idx] = (float)shader->in_prim_idx; } else { /*debug_printf("\tSlot = %d, vs_slot = %d, idx = %d:\n", slot, vs_slot, idx);*/ #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[idx].xyzw[0].f[prim_idx] = input[vs_slot][0]; machine->Inputs[idx].xyzw[1].f[prim_idx] = input[vs_slot][1]; machine->Inputs[idx].xyzw[2].f[prim_idx] = input[vs_slot][2]; machine->Inputs[idx].xyzw[3].f[prim_idx] = input[vs_slot][3]; #if 0 debug_printf("\t\t%f %f %f %f\n", machine->Inputs[idx].xyzw[0].f[prim_idx], machine->Inputs[idx].xyzw[1].f[prim_idx], machine->Inputs[idx].xyzw[2].f[prim_idx], machine->Inputs[idx].xyzw[3].f[prim_idx]); #endif ++vs_slot; } } } } static void gs_flush(struct draw_geometry_shader *shader, unsigned input_primitives) { unsigned out_prim_count; struct tgsi_exec_machine *machine = shader->machine; debug_assert(input_primitives > 0 && input_primitives < 4); tgsi_set_exec_mask(machine, 1, input_primitives > 1, input_primitives > 2, input_primitives > 3); /* run interpreter */ tgsi_exec_machine_run(machine); out_prim_count = machine->Temps[TGSI_EXEC_TEMP_PRIMITIVE_I].xyzw[TGSI_EXEC_TEMP_PRIMITIVE_C].u[0]; draw_geometry_fetch_outputs(shader, out_prim_count, &shader->tmp_output); } static void gs_point(struct draw_geometry_shader *shader, int idx) { unsigned indices[1]; indices[0] = idx; draw_fetch_gs_input(shader, indices, 1, 0); ++shader->in_prim_idx; gs_flush(shader, 1); } static void gs_line(struct draw_geometry_shader *shader, int i0, int i1) { unsigned indices[2]; indices[0] = i0; indices[1] = i1; draw_fetch_gs_input(shader, indices, 2, 0); ++shader->in_prim_idx; gs_flush(shader, 1); } static void gs_tri(struct draw_geometry_shader *shader, int i0, int i1, int i2) { unsigned indices[3]; indices[0] = i0; indices[1] = i1; indices[2] = i2; draw_fetch_gs_input(shader, indices, 3, 0); ++shader->in_prim_idx; gs_flush(shader, 1); } #define TRIANGLE(gs,i0,i1,i2) gs_tri(gs,i0,i1,i2) #define LINE(gs,i0,i1) gs_line(gs,i0,i1) #define POINT(gs,i0) gs_point(gs,i0) #define FUNC gs_run #include "draw_gs_tmp.h" int draw_geometry_shader_run(struct draw_geometry_shader *shader, const void *constants[PIPE_MAX_CONSTANT_BUFFERS], const struct draw_vertex_info *input_verts, const struct draw_prim_info *input_prim, struct draw_vertex_info *output_verts, struct draw_prim_info *output_prims ) { const float (*input)[4] = (const float (*)[4])input_verts->verts->data; unsigned input_stride = input_verts->vertex_size; unsigned vertex_size = input_verts->vertex_size; struct tgsi_exec_machine *machine = shader->machine; unsigned int i; unsigned num_in_primitives = u_gs_prims_for_vertices(input_prim->prim, input_verts->count); unsigned max_out_prims = u_gs_prims_for_vertices(shader->output_primitive, shader->max_output_vertices) * num_in_primitives; output_verts->vertex_size = input_verts->vertex_size; output_verts->stride = input_verts->vertex_size; output_verts->count = draw_max_output_vertices(shader->draw, input_prim->prim, input_verts->count); output_verts->verts = (struct vertex_header *)MALLOC(input_verts->vertex_size * num_in_primitives * shader->max_output_vertices); if (0) debug_printf("%s count = %d (prims = %d)\n", __FUNCTION__, input_verts->count, num_in_primitives); shader->emitted_vertices = 0; shader->emitted_primitives = 0; shader->vertex_size = vertex_size; shader->tmp_output = (float (*)[4])output_verts->verts->data; shader->in_prim_idx = 0; shader->input_vertex_stride = input_stride; shader->input = input; if (shader->primitive_lengths) { FREE(shader->primitive_lengths); } shader->primitive_lengths = MALLOC(max_out_prims * sizeof(unsigned)); for (i = 0; i < PIPE_MAX_CONSTANT_BUFFERS; i++) { machine->Consts[i] = constants[i]; } gs_run(shader, input_prim, input_verts, output_prims, output_verts); /* Update prim_info: */ output_prims->linear = TRUE; output_prims->elts = NULL; output_prims->start = 0; output_prims->prim = shader->output_primitive; output_prims->primitive_lengths = shader->primitive_lengths; output_prims->primitive_count = shader->emitted_primitives; return shader->emitted_vertices; } 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 && shader->machine->Tokens != shader->state.tokens) { tgsi_exec_machine_bind_shader(shader->machine, shader->state.tokens, draw->gs.num_samplers, draw->gs.samplers); } } int draw_max_output_vertices(struct draw_context *draw, unsigned pipe_prim, unsigned count) { unsigned alloc_count = align( count, 4 ); if (draw->gs.geometry_shader) { unsigned input_primitives = u_gs_prims_for_vertices(pipe_prim, count); /* max GS output is number of input primitives * max output * vertices per each invocation */ unsigned gs_max_verts = input_primitives * draw->gs.geometry_shader->max_output_vertices; if (gs_max_verts > count) alloc_count = align(gs_max_verts, 4); } /*debug_printf("------- alloc count = %d (input = %d)\n", alloc_count, count);*/ return alloc_count; }