/**
* Execute geometry shader.
*/
int draw_geometry_shader_run(struct draw_geometry_shader *shader,
const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS],
const struct draw_vertex_info *input_verts,
const struct draw_prim_info *input_prim,
const struct tgsi_shader_info *input_info,
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 num_outputs = draw_total_gs_outputs(shader->draw);
unsigned vertex_size = sizeof(struct vertex_header) + num_outputs * 4 * sizeof(float);
unsigned num_input_verts = input_prim->linear ?
input_verts->count :
input_prim->count;
unsigned num_in_primitives =
align(
MAX2(u_decomposed_prims_for_vertices(input_prim->prim,
num_input_verts),
u_decomposed_prims_for_vertices(shader->input_primitive,
num_input_verts)),
shader->vector_length);
unsigned max_out_prims =
u_decomposed_prims_for_vertices(shader->output_primitive,
shader->max_output_vertices)
* num_in_primitives;
//Assume at least one primitive
max_out_prims = MAX2(max_out_prims, 1);
output_verts->vertex_size = vertex_size;
output_verts->stride = output_verts->vertex_size;
/* we allocate exactly one extra vertex per primitive to allow the GS to emit
* overflown vertices into some area where they won't harm anyone */
output_verts->verts =
(struct vertex_header *)MALLOC(output_verts->vertex_size *
max_out_prims *
shader->primitive_boundary);
#if 0
debug_printf("%s count = %d (in prims # = %d)\n",
__FUNCTION__, num_input_verts, num_in_primitives);
debug_printf("\tlinear = %d, prim_info->count = %d\n",
input_prim->linear, input_prim->count);
debug_printf("\tprim pipe = %s, shader in = %s, shader out = %s, max out = %d\n",
u_prim_name(input_prim->prim),
u_prim_name(shader->input_primitive),
u_prim_name(shader->output_primitive),
shader->max_output_vertices);
#endif
shader->emitted_vertices = 0;
shader->emitted_primitives = 0;
shader->vertex_size = vertex_size;
shader->tmp_output = (float (*)[4])output_verts->verts->data;
shader->fetched_prim_count = 0;
shader->input_vertex_stride = input_stride;
shader->input = input;
shader->input_info = input_info;
FREE(shader->primitive_lengths);
shader->primitive_lengths = MALLOC(max_out_prims * sizeof(unsigned));
#ifdef HAVE_LLVM
if (draw_get_option_use_llvm()) {
shader->gs_output = output_verts->verts;
if (max_out_prims > shader->max_out_prims) {
unsigned i;
if (shader->llvm_prim_lengths) {
for (i = 0; i < shader->max_out_prims; ++i) {
align_free(shader->llvm_prim_lengths[i]);
}
FREE(shader->llvm_prim_lengths);
}
shader->llvm_prim_lengths = MALLOC(max_out_prims * sizeof(unsigned*));
for (i = 0; i < max_out_prims; ++i) {
int vector_size = shader->vector_length * sizeof(unsigned);
shader->llvm_prim_lengths[i] =
align_malloc(vector_size, vector_size);
}
shader->max_out_prims = max_out_prims;
}
shader->jit_context->prim_lengths = shader->llvm_prim_lengths;
shader->jit_context->emitted_vertices = shader->llvm_emitted_vertices;
shader->jit_context->emitted_prims = shader->llvm_emitted_primitives;
}
#endif
shader->prepare(shader, constants, constants_size);
if (input_prim->linear)
gs_run(shader, input_prim, input_verts,
output_prims, output_verts);
else
gs_run_elts(shader, input_prim, input_verts,
output_prims, output_verts);
/* Flush the remaining primitives. Will happen if
* num_input_primitives % 4 != 0
*/
if (shader->fetched_prim_count > 0) {
gs_flush(shader);
}
debug_assert(shader->fetched_prim_count == 0);
/* Update prim_info:
*/
output_prims->linear = TRUE;
output_prims->elts = NULL;
output_prims->start = 0;
output_prims->count = shader->emitted_vertices;
output_prims->prim = shader->output_primitive;
output_prims->flags = 0x0;
output_prims->primitive_lengths = shader->primitive_lengths;
output_prims->primitive_count = shader->emitted_primitives;
output_verts->count = shader->emitted_vertices;
if (shader->draw->collect_statistics) {
unsigned i;
for (i = 0; i < shader->emitted_primitives; ++i) {
shader->draw->statistics.gs_primitives +=
u_decomposed_prims_for_vertices(shader->output_primitive,
shader->primitive_lengths[i]);
}
}
#if 0
debug_printf("GS finished, prims = %d, verts = %d\n",
output_prims->primitive_count,
output_verts->count);
#endif
return shader->emitted_vertices;
}
/**
* Execute geometry shader using TGSI interpreter.
*/
int draw_geometry_shader_run(struct draw_geometry_shader *shader,
const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
const unsigned constants_size[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 num_input_verts = input_prim->linear ?
input_verts->count :
input_prim->count;
unsigned num_in_primitives =
MAX2(u_gs_prims_for_vertices(input_prim->prim, num_input_verts),
u_gs_prims_for_vertices(shader->input_primitive, num_input_verts));
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->verts =
(struct vertex_header *)MALLOC(input_verts->vertex_size *
num_in_primitives *
shader->max_output_vertices);
#if 0
debug_printf("%s count = %d (in prims # = %d)\n",
__FUNCTION__, num_input_verts, num_in_primitives);
debug_printf("\tlinear = %d, prim_info->count = %d\n",
input_prim->linear, input_prim->count);
debug_printf("\tprimt pipe = %d, shader in = %d, shader out = %d, max out = %d\n",
input_prim->prim, shader->input_primitive,
shader->output_primitive,
shader->max_output_vertices);
#endif
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));
tgsi_exec_set_constant_buffers(machine, PIPE_MAX_CONSTANT_BUFFERS,
constants, constants_size);
if (input_prim->linear)
gs_run(shader, input_prim, input_verts,
output_prims, output_verts);
else
gs_run_elts(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->count = shader->emitted_vertices;
output_prims->prim = shader->output_primitive;
output_prims->flags = 0x0;
output_prims->primitive_lengths = shader->primitive_lengths;
output_prims->primitive_count = shader->emitted_primitives;
output_verts->count = shader->emitted_vertices;
#if 0
debug_printf("GS finished, prims = %d, verts = %d\n",
output_prims->primitive_count,
output_verts->count);
#endif
return shader->emitted_vertices;
}