static void
aaline_flush(struct draw_stage *stage, unsigned flags)
{
struct draw_context *draw = stage->draw;
struct aaline_stage *aaline = aaline_stage(stage);
struct pipe_context *pipe = draw->pipe;
stage->line = aaline_first_line;
stage->next->flush( stage->next, flags );
/* restore original frag shader, texture, sampler state */
draw->suspend_flushing = TRUE;
aaline->driver_bind_fs_state(pipe, aaline->fs->driver_fs);
aaline->driver_bind_sampler_states(pipe, aaline->num_samplers,
aaline->state.sampler);
aaline->driver_set_sampler_views(pipe,
aaline->num_sampler_views,
aaline->state.sampler_views);
/* restore original rasterizer state */
if (draw->rast_handle) {
pipe->bind_rasterizer_state(pipe, draw->rast_handle);
}
draw->suspend_flushing = FALSE;
draw_remove_extra_vertex_attribs(draw);
}
static void
aaline_destroy(struct draw_stage *stage)
{
struct aaline_stage *aaline = aaline_stage(stage);
struct pipe_context *pipe = stage->draw->pipe;
uint i;
for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
pipe_sampler_view_reference(&aaline->state.sampler_views[i], NULL);
}
if (aaline->sampler_cso)
pipe->delete_sampler_state(pipe, aaline->sampler_cso);
if (aaline->texture)
pipe_resource_reference(&aaline->texture, NULL);
if (aaline->sampler_view) {
pipe_sampler_view_reference(&aaline->sampler_view, NULL);
}
draw_free_temp_verts( stage );
FREE( stage );
}
static void
aaline_destroy(struct draw_stage *stage)
{
struct aaline_stage *aaline = aaline_stage(stage);
struct pipe_context *pipe = stage->draw->pipe;
uint i;
for (i = 0; i < PIPE_MAX_SHADER_SAMPLER_VIEWS; i++) {
pipe_sampler_view_reference(&aaline->state.sampler_views[i], NULL);
}
if (aaline->sampler_cso)
pipe->delete_sampler_state(pipe, aaline->sampler_cso);
if (aaline->texture)
pipe_resource_reference(&aaline->texture, NULL);
if (aaline->sampler_view) {
pipe_sampler_view_reference(&aaline->sampler_view, NULL);
}
draw_free_temp_verts( stage );
/* restore the old entry points */
pipe->create_fs_state = aaline->driver_create_fs_state;
pipe->bind_fs_state = aaline->driver_bind_fs_state;
pipe->delete_fs_state = aaline->driver_delete_fs_state;
pipe->bind_sampler_states = aaline->driver_bind_sampler_states;
pipe->set_sampler_views = aaline->driver_set_sampler_views;
FREE( stage );
}
static void
aaline_first_line(struct draw_stage *stage, struct prim_header *header)
{
auto struct aaline_stage *aaline = aaline_stage(stage);
struct draw_context *draw = stage->draw;
struct pipe_context *pipe = draw->pipe;
const struct pipe_rasterizer_state *rast = draw->rasterizer;
uint num_samplers;
void *r;
assert(draw->rasterizer->line_smooth);
if (draw->rasterizer->line_width <= 2.2)
aaline->half_line_width = 1.1f;
else
aaline->half_line_width = 0.5f * draw->rasterizer->line_width;
/*
* Bind (generate) our fragprog, sampler and texture
*/
if (!bind_aaline_fragment_shader(aaline)) {
stage->line = draw_pipe_passthrough_line;
stage->line(stage, header);
return;
}
/* update vertex attrib info */
aaline->tex_slot = draw_current_shader_outputs(draw);
aaline->pos_slot = draw_current_shader_position_output(draw);;
/* allocate the extra post-transformed vertex attribute */
(void) draw_alloc_extra_vertex_attrib(draw, TGSI_SEMANTIC_GENERIC,
aaline->fs->generic_attrib);
/* how many samplers? */
/* we'll use sampler/texture[pstip->sampler_unit] for the stipple */
num_samplers = MAX2(aaline->num_sampler_views, aaline->num_samplers);
num_samplers = MAX2(num_samplers, aaline->fs->sampler_unit + 1);
aaline->state.sampler[aaline->fs->sampler_unit] = aaline->sampler_cso;
pipe_sampler_view_reference(&aaline->state.sampler_views[aaline->fs->sampler_unit],
aaline->sampler_view);
draw->suspend_flushing = TRUE;
aaline->driver_bind_sampler_states(pipe, num_samplers, aaline->state.sampler);
aaline->driver_set_sampler_views(pipe, num_samplers, aaline->state.sampler_views);
/* Disable triangle culling, stippling, unfilled mode etc. */
r = draw_get_rasterizer_no_cull(draw, rast->scissor, rast->flatshade);
pipe->bind_rasterizer_state(pipe, r);
draw->suspend_flushing = FALSE;
/* now really draw first line */
stage->line = aaline_line;
stage->line(stage, header);
}
static void
aaline_first_line(struct draw_stage *stage, struct prim_header *header)
{
auto struct aaline_stage *aaline = aaline_stage(stage);
struct draw_context *draw = stage->draw;
struct pipe_context *pipe = draw->pipe;
const struct pipe_rasterizer_state *rast = draw->rasterizer;
uint num_samplers;
void *r;
assert(draw->rasterizer->line_smooth);
if (draw->rasterizer->line_width <= 2.2)
aaline->half_line_width = 1.1f;
else
aaline->half_line_width = 0.5f * draw->rasterizer->line_width;
/*
* Bind (generate) our fragprog, sampler and texture
*/
if (!bind_aaline_fragment_shader(aaline)) {
stage->line = draw_pipe_passthrough_line;
stage->line(stage, header);
return;
}
draw_aaline_prepare_outputs(draw, draw->pipeline.aaline);
/* how many samplers? */
/* we'll use sampler/texture[pstip->sampler_unit] for the stipple */
num_samplers = MAX2(aaline->num_sampler_views, aaline->num_samplers);
num_samplers = MAX2(num_samplers, aaline->fs->sampler_unit + 1);
aaline->state.sampler[aaline->fs->sampler_unit] = aaline->sampler_cso;
pipe_sampler_view_reference(&aaline->state.sampler_views[aaline->fs->sampler_unit],
aaline->sampler_view);
draw->suspend_flushing = TRUE;
aaline->driver_bind_sampler_states(pipe, PIPE_SHADER_FRAGMENT, 0,
num_samplers, aaline->state.sampler);
aaline->driver_set_sampler_views(pipe, PIPE_SHADER_FRAGMENT, 0,
num_samplers, aaline->state.sampler_views);
/* Disable triangle culling, stippling, unfilled mode etc. */
r = draw_get_rasterizer_no_cull(draw, rast->scissor, rast->flatshade);
pipe->bind_rasterizer_state(pipe, r);
draw->suspend_flushing = FALSE;
/* now really draw first line */
stage->line = aaline_line;
stage->line(stage, header);
}
static struct aaline_stage *
aaline_stage_from_pipe(struct pipe_context *pipe)
{
struct draw_context *draw = (struct draw_context *) pipe->draw;
if (draw) {
return aaline_stage(draw->pipeline.aaline);
} else {
return NULL;
}
}
static void
aaline_first_line(struct draw_stage *stage, struct prim_header *header)
{
auto struct aaline_stage *aaline = aaline_stage(stage);
struct draw_context *draw = stage->draw;
struct pipe_context *pipe = aaline->pipe;
uint num_samplers;
assert(draw->rasterizer->line_smooth);
if (draw->rasterizer->line_width <= 3.0)
aaline->half_line_width = 1.5f;
else
aaline->half_line_width = 0.5f * draw->rasterizer->line_width;
/*
* Bind (generate) our fragprog, sampler and texture
*/
if (!bind_aaline_fragment_shader(aaline)) {
stage->line = draw_pipe_passthrough_line;
stage->line(stage, header);
return;
}
/* update vertex attrib info */
aaline->tex_slot = draw->vs.num_vs_outputs;
aaline->pos_slot = draw->vs.position_output;
/* advertise the extra post-transformed vertex attribute */
draw->extra_vp_outputs.semantic_name = TGSI_SEMANTIC_GENERIC;
draw->extra_vp_outputs.semantic_index = aaline->fs->generic_attrib;
draw->extra_vp_outputs.slot = aaline->tex_slot;
/* how many samplers? */
/* we'll use sampler/texture[pstip->sampler_unit] for the stipple */
num_samplers = MAX2(aaline->num_textures, aaline->num_samplers);
num_samplers = MAX2(num_samplers, aaline->fs->sampler_unit + 1);
aaline->state.sampler[aaline->fs->sampler_unit] = aaline->sampler_cso;
pipe_texture_reference(&aaline->state.texture[aaline->fs->sampler_unit],
aaline->texture);
draw->suspend_flushing = TRUE;
aaline->driver_bind_sampler_states(pipe, num_samplers, aaline->state.sampler);
aaline->driver_set_sampler_textures(pipe, num_samplers, aaline->state.texture);
draw->suspend_flushing = FALSE;
/* now really draw first line */
stage->line = aaline_line;
stage->line(stage, header);
}
void
draw_aaline_prepare_outputs(struct draw_context *draw,
struct draw_stage *stage)
{
struct aaline_stage *aaline = aaline_stage(stage);
const struct pipe_rasterizer_state *rast = draw->rasterizer;
/* update vertex attrib info */
aaline->pos_slot = draw_current_shader_position_output(draw);;
if (!rast->line_smooth)
return;
/* allocate the extra post-transformed vertex attribute */
aaline->tex_slot = draw_alloc_extra_vertex_attrib(draw,
TGSI_SEMANTIC_GENERIC,
aaline->fs->generic_attrib);
}
static void
aaline_destroy(struct draw_stage *stage)
{
struct aaline_stage *aaline = aaline_stage(stage);
uint i;
for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
pipe_texture_reference(&aaline->state.texture[i], NULL);
}
if (aaline->sampler_cso)
aaline->pipe->delete_sampler_state(aaline->pipe, aaline->sampler_cso);
if (aaline->texture)
pipe_texture_release(&aaline->texture);
draw_free_temp_verts( stage );
FREE( stage );
}
static void
aaline_flush(struct draw_stage *stage, unsigned flags)
{
struct draw_context *draw = stage->draw;
struct aaline_stage *aaline = aaline_stage(stage);
struct pipe_context *pipe = aaline->pipe;
stage->line = aaline_first_line;
stage->next->flush( stage->next, flags );
/* restore original frag shader, texture, sampler state */
draw->suspend_flushing = TRUE;
aaline->driver_bind_fs_state(pipe, aaline->fs->driver_fs);
aaline->driver_bind_sampler_states(pipe, aaline->num_samplers,
aaline->state.sampler);
aaline->driver_set_sampler_textures(pipe, aaline->num_textures,
aaline->state.texture);
draw->suspend_flushing = FALSE;
draw->extra_vp_outputs.slot = 0;
}
/**
* Draw a wide line by drawing a quad, using geometry which will
* fullfill GL's antialiased line requirements.
*/
static void
aaline_line(struct draw_stage *stage, struct prim_header *header)
{
const struct aaline_stage *aaline = aaline_stage(stage);
const float half_width = aaline->half_line_width;
struct prim_header tri;
struct vertex_header *v[8];
uint texPos = aaline->tex_slot;
uint posPos = aaline->pos_slot;
float *pos, *tex;
float dx = header->v[1]->data[posPos][0] - header->v[0]->data[posPos][0];
float dy = header->v[1]->data[posPos][1] - header->v[0]->data[posPos][1];
double a = atan2(dy, dx);
float c_a = (float) cos(a), s_a = (float) sin(a);
uint i;
/* XXX the ends of lines aren't quite perfect yet, but probably passable */
dx = 0.5F * half_width;
dy = half_width;
/* allocate/dup new verts */
for (i = 0; i < 8; i++) {
v[i] = dup_vert(stage, header->v[i/4], i);
}
/*
* Quad strip for line from v0 to v1 (*=endpoints):
*
* 1 3 5 7
* +---+---------------------+---+
* | |
* | *v0 v1* |
* | |
* +---+---------------------+---+
* 0 2 4 6
*/
/* new verts */
pos = v[0]->data[posPos];
pos[0] += (-dx * c_a - dy * s_a);
pos[1] += (-dx * s_a + dy * c_a);
pos = v[1]->data[posPos];
pos[0] += (-dx * c_a - -dy * s_a);
pos[1] += (-dx * s_a + -dy * c_a);
pos = v[2]->data[posPos];
pos[0] += ( dx * c_a - dy * s_a);
pos[1] += ( dx * s_a + dy * c_a);
pos = v[3]->data[posPos];
pos[0] += ( dx * c_a - -dy * s_a);
pos[1] += ( dx * s_a + -dy * c_a);
pos = v[4]->data[posPos];
pos[0] += (-dx * c_a - dy * s_a);
pos[1] += (-dx * s_a + dy * c_a);
pos = v[5]->data[posPos];
pos[0] += (-dx * c_a - -dy * s_a);
pos[1] += (-dx * s_a + -dy * c_a);
pos = v[6]->data[posPos];
pos[0] += ( dx * c_a - dy * s_a);
pos[1] += ( dx * s_a + dy * c_a);
pos = v[7]->data[posPos];
pos[0] += ( dx * c_a - -dy * s_a);
pos[1] += ( dx * s_a + -dy * c_a);
/* new texcoords */
tex = v[0]->data[texPos];
ASSIGN_4V(tex, 0, 0, 0, 1);
tex = v[1]->data[texPos];
ASSIGN_4V(tex, 0, 1, 0, 1);
tex = v[2]->data[texPos];
ASSIGN_4V(tex, .5, 0, 0, 1);
tex = v[3]->data[texPos];
ASSIGN_4V(tex, .5, 1, 0, 1);
tex = v[4]->data[texPos];
ASSIGN_4V(tex, .5, 0, 0, 1);
tex = v[5]->data[texPos];
ASSIGN_4V(tex, .5, 1, 0, 1);
tex = v[6]->data[texPos];
ASSIGN_4V(tex, 1, 0, 0, 1);
tex = v[7]->data[texPos];
ASSIGN_4V(tex, 1, 1, 0, 1);
/* emit 6 tris for the quad strip */
tri.v[0] = v[2]; tri.v[1] = v[1]; tri.v[2] = v[0];
stage->next->tri( stage->next, &tri );
tri.v[0] = v[3]; tri.v[1] = v[1]; tri.v[2] = v[2];
stage->next->tri( stage->next, &tri );
tri.v[0] = v[4]; tri.v[1] = v[3]; tri.v[2] = v[2];
stage->next->tri( stage->next, &tri );
tri.v[0] = v[5]; tri.v[1] = v[3]; tri.v[2] = v[4];
stage->next->tri( stage->next, &tri );
tri.v[0] = v[6]; tri.v[1] = v[5]; tri.v[2] = v[4];
stage->next->tri( stage->next, &tri );
tri.v[0] = v[7]; tri.v[1] = v[5]; tri.v[2] = v[6];
stage->next->tri( stage->next, &tri );
}
