/**
* Draw vertex arrays, with optional indexing, optional instancing.
* All the other drawing functions are implemented in terms of this function.
* Basically, map the vertex buffers (and drawing surfaces), then hand off
* the drawing to the 'draw' module.
*/
static void
llvmpipe_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
{
struct llvmpipe_context *lp = llvmpipe_context(pipe);
struct draw_context *draw = lp->draw;
const void *mapped_indices = NULL;
unsigned i;
if (!llvmpipe_check_render_cond(lp))
return;
if (lp->dirty)
llvmpipe_update_derived( lp );
/*
* Map vertex buffers
*/
for (i = 0; i < lp->num_vertex_buffers; i++) {
const void *buf = lp->vertex_buffer[i].user_buffer;
if (!buf)
buf = llvmpipe_resource_data(lp->vertex_buffer[i].buffer);
draw_set_mapped_vertex_buffer(draw, i, buf);
}
/* Map index buffer, if present */
if (info->indexed) {
mapped_indices = lp->index_buffer.user_buffer;
if (!mapped_indices)
mapped_indices = llvmpipe_resource_data(lp->index_buffer.buffer);
draw_set_indexes(draw,
(ubyte *) mapped_indices + lp->index_buffer.offset,
lp->index_buffer.index_size);
}
llvmpipe_prepare_vertex_sampling(lp,
lp->num_sampler_views[PIPE_SHADER_VERTEX],
lp->sampler_views[PIPE_SHADER_VERTEX]);
/* draw! */
draw_vbo(draw, info);
/*
* unmap vertex/index buffers
*/
for (i = 0; i < lp->num_vertex_buffers; i++) {
draw_set_mapped_vertex_buffer(draw, i, NULL);
}
if (mapped_indices) {
draw_set_indexes(draw, NULL, 0);
}
llvmpipe_cleanup_vertex_sampling(lp);
/*
* TODO: Flush only when a user vertex/index buffer is present
* (or even better, modify draw module to do this
* internally when this condition is seen?)
*/
draw_flush(draw);
}
void llvmpipe_setup_prepare( struct setup_context *setup )
{
struct llvmpipe_context *lp = setup->llvmpipe;
if (lp->dirty) {
llvmpipe_update_derived(lp);
}
if (lp->reduced_api_prim == PIPE_PRIM_TRIANGLES &&
lp->rasterizer->fill_cw == PIPE_POLYGON_MODE_FILL &&
lp->rasterizer->fill_ccw == PIPE_POLYGON_MODE_FILL) {
/* we'll do culling */
setup->winding = lp->rasterizer->cull_mode;
}
else {
/* 'draw' will do culling */
setup->winding = PIPE_WINDING_NONE;
}
}
void
lp_setup_update_state( struct lp_setup_context *setup,
boolean update_scene )
{
/* Some of the 'draw' pipeline stages may have changed some driver state.
* Make sure we've processed those state changes before anything else.
*
* XXX this is the only place where llvmpipe_context is used in the
* setup code. This may get refactored/changed...
*/
{
struct llvmpipe_context *lp = llvmpipe_context(setup->pipe);
if (lp->dirty) {
llvmpipe_update_derived(lp);
}
/* Will probably need to move this somewhere else, just need
* to know about vertex shader point size attribute.
*/
setup->psize = lp->psize_slot;
assert(lp->dirty == 0);
}
if (update_scene)
set_scene_state( setup, SETUP_ACTIVE, __FUNCTION__ );
/* Only call into update_scene_state() if we already have a
* scene:
*/
if (update_scene && setup->scene) {
assert(setup->state == SETUP_ACTIVE);
if (!try_update_scene_state(setup)) {
lp_setup_flush_and_restart(setup);
if (!try_update_scene_state(setup))
assert(0);
}
}
}
boolean
lp_setup_update_state( struct lp_setup_context *setup,
boolean update_scene )
{
/* Some of the 'draw' pipeline stages may have changed some driver state.
* Make sure we've processed those state changes before anything else.
*
* XXX this is the only place where llvmpipe_context is used in the
* setup code. This may get refactored/changed...
*/
{
struct llvmpipe_context *lp = llvmpipe_context(setup->pipe);
if (lp->dirty) {
llvmpipe_update_derived(lp);
}
if (lp->setup->dirty) {
llvmpipe_update_setup(lp);
}
assert(setup->setup.variant);
/* Will probably need to move this somewhere else, just need
* to know about vertex shader point size attribute.
*/
setup->psize_slot = lp->psize_slot;
setup->viewport_index_slot = lp->viewport_index_slot;
setup->layer_slot = lp->layer_slot;
setup->face_slot = lp->face_slot;
assert(lp->dirty == 0);
assert(lp->setup_variant.key.size ==
setup->setup.variant->key.size);
assert(memcmp(&lp->setup_variant.key,
&setup->setup.variant->key,
setup->setup.variant->key.size) == 0);
}
if (update_scene && setup->state != SETUP_ACTIVE) {
if (!set_scene_state( setup, SETUP_ACTIVE, __FUNCTION__ ))
return FALSE;
}
/* Only call into update_scene_state() if we already have a
* scene:
*/
if (update_scene && setup->scene) {
assert(setup->state == SETUP_ACTIVE);
if (try_update_scene_state(setup))
return TRUE;
/* Update failed, try to restart the scene.
*
* Cannot call lp_setup_flush_and_restart() directly here
* because of potential recursion.
*/
if (!set_scene_state(setup, SETUP_FLUSHED, __FUNCTION__))
return FALSE;
if (!set_scene_state(setup, SETUP_ACTIVE, __FUNCTION__))
return FALSE;
if (!setup->scene)
return FALSE;
return try_update_scene_state(setup);
}
return TRUE;
}
/**
* Draw vertex arrays, with optional indexing, optional instancing.
* All the other drawing functions are implemented in terms of this function.
* Basically, map the vertex buffers (and drawing surfaces), then hand off
* the drawing to the 'draw' module.
*/
static void
llvmpipe_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
{
struct llvmpipe_context *lp = llvmpipe_context(pipe);
struct draw_context *draw = lp->draw;
const void *mapped_indices = NULL;
unsigned i;
if (!llvmpipe_check_render_cond(lp))
return;
if (info->indirect) {
util_draw_indirect(pipe, info);
return;
}
if (lp->dirty)
llvmpipe_update_derived( lp );
/*
* Map vertex buffers
*/
for (i = 0; i < lp->num_vertex_buffers; i++) {
const void *buf = lp->vertex_buffer[i].is_user_buffer ?
lp->vertex_buffer[i].buffer.user : NULL;
size_t size = ~0;
if (!buf) {
if (!lp->vertex_buffer[i].buffer.resource) {
continue;
}
buf = llvmpipe_resource_data(lp->vertex_buffer[i].buffer.resource);
size = lp->vertex_buffer[i].buffer.resource->width0;
}
draw_set_mapped_vertex_buffer(draw, i, buf, size);
}
/* Map index buffer, if present */
if (info->index_size) {
unsigned available_space = ~0;
mapped_indices = info->has_user_indices ? info->index.user : NULL;
if (!mapped_indices) {
mapped_indices = llvmpipe_resource_data(info->index.resource);
available_space = info->index.resource->width0;
}
draw_set_indexes(draw,
(ubyte *) mapped_indices,
info->index_size, available_space);
}
for (i = 0; i < lp->num_so_targets; i++) {
void *buf = 0;
if (lp->so_targets[i]) {
buf = llvmpipe_resource(lp->so_targets[i]->target.buffer)->data;
lp->so_targets[i]->mapping = buf;
}
}
draw_set_mapped_so_targets(draw, lp->num_so_targets,
lp->so_targets);
llvmpipe_prepare_vertex_sampling(lp,
lp->num_sampler_views[PIPE_SHADER_VERTEX],
lp->sampler_views[PIPE_SHADER_VERTEX]);
llvmpipe_prepare_geometry_sampling(lp,
lp->num_sampler_views[PIPE_SHADER_GEOMETRY],
lp->sampler_views[PIPE_SHADER_GEOMETRY]);
if (lp->gs && lp->gs->no_tokens) {
/* we have an empty geometry shader with stream output, so
attach the stream output info to the current vertex shader */
if (lp->vs) {
draw_vs_attach_so(lp->vs, &lp->gs->stream_output);
}
}
draw_collect_pipeline_statistics(draw,
lp->active_statistics_queries > 0);
/* draw! */
draw_vbo(draw, info);
/*
* unmap vertex/index buffers
*/
for (i = 0; i < lp->num_vertex_buffers; i++) {
draw_set_mapped_vertex_buffer(draw, i, NULL, 0);
}
if (mapped_indices) {
draw_set_indexes(draw, NULL, 0, 0);
}
draw_set_mapped_so_targets(draw, 0, NULL);
if (lp->gs && lp->gs->no_tokens) {
/* we have attached stream output to the vs for rendering,
now lets reset it */
if (lp->vs) {
draw_vs_reset_so(lp->vs);
}
}
/*
* TODO: Flush only when a user vertex/index buffer is present
* (or even better, modify draw module to do this
* internally when this condition is seen?)
*/
draw_flush(draw);
}
/**
* Draw vertex arrays, with optional indexing.
* Basically, map the vertex buffers (and drawing surfaces), then hand off
* the drawing to the 'draw' module.
*/
boolean
llvmpipe_draw_range_elements(struct pipe_context *pipe,
struct pipe_buffer *indexBuffer,
unsigned indexSize,
unsigned min_index,
unsigned max_index,
unsigned mode, unsigned start, unsigned count)
{
struct llvmpipe_context *lp = llvmpipe_context(pipe);
struct draw_context *draw = lp->draw;
unsigned i;
lp->reduced_api_prim = u_reduced_prim(mode);
if (lp->dirty)
llvmpipe_update_derived( lp );
llvmpipe_map_transfers(lp);
/*
* Map vertex buffers
*/
for (i = 0; i < lp->num_vertex_buffers; i++) {
void *buf = llvmpipe_buffer(lp->vertex_buffer[i].buffer)->data;
draw_set_mapped_vertex_buffer(draw, i, buf);
}
/* Map index buffer, if present */
if (indexBuffer) {
void *mapped_indexes = llvmpipe_buffer(indexBuffer)->data;
draw_set_mapped_element_buffer_range(draw, indexSize,
min_index,
max_index,
mapped_indexes);
}
else {
/* no index/element buffer */
draw_set_mapped_element_buffer_range(draw, 0, start,
start + count - 1, NULL);
}
/* draw! */
draw_arrays(draw, mode, start, count);
/*
* unmap vertex/index buffers
*/
for (i = 0; i < lp->num_vertex_buffers; i++) {
draw_set_mapped_vertex_buffer(draw, i, NULL);
}
if (indexBuffer) {
draw_set_mapped_element_buffer(draw, 0, NULL);
}
/*
* TODO: Flush only when a user vertex/index buffer is present
* (or even better, modify draw module to do this
* internally when this condition is seen?)
*/
draw_flush(draw);
/* Note: leave drawing surfaces mapped */
lp->dirty_render_cache = TRUE;
return TRUE;
}