st_cb_clear.h File Reference

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Functions
void	st_init_clear (struct st_context *st)
void	st_destroy_clear (struct st_context *st)
void	st_flush_clear (struct st_context *st)
void	st_init_clear_functions (struct dd_function_table *functions)

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Function Documentation

void st_destroy_clear

(

struct st_context *

st

)

Definition at line 96 of file st_cb_clear.c.

References st_context::clear, st_context::cso_context, cso_delete_fragment_shader(), cso_delete_vertex_shader(), st_context::frag_shader, st_context::fs, st_context::pipe, pipe_buffer_reference(), pipe_context::screen, pipe_shader_state::tokens, util_free_shader(), st_context::vbuf, st_context::vert_shader, and st_context::vs.

{
   struct pipe_context *pipe = st->pipe;

   if (st->clear.vert_shader.tokens) {
      util_free_shader(&st->clear.vert_shader);
      st->clear.vert_shader.tokens = NULL;
   }

   if (st->clear.frag_shader.tokens) {
      util_free_shader(&st->clear.frag_shader);
      st->clear.frag_shader.tokens = NULL;
   }

   if (st->clear.fs) {
      cso_delete_fragment_shader(st->cso_context, st->clear.fs);
      st->clear.fs = NULL;
   }
   if (st->clear.vs) {
      cso_delete_vertex_shader(st->cso_context, st->clear.vs);
      st->clear.vs = NULL;
   }
   if (st->clear.vbuf) {
      pipe_buffer_reference(pipe->screen, &st->clear.vbuf, NULL);
      st->clear.vbuf = NULL;
   }
}

void st_flush_clear

(

struct st_context *

st

)

Definition at line 526 of file st_cb_clear.c.

References st_context::clear, st_context::pipe, pipe_buffer_reference(), pipe_context::screen, st_context::vbuf, and st_context::vbuf_slot.

{
   /* Release vertex buffer to avoid synchronous rendering if we were
    * to map it in the next frame.
    */
   pipe_buffer_reference(st->pipe->screen, &st->clear.vbuf, NULL);
   st->clear.vbuf_slot = 0;
}

void st_init_clear

(

struct st_context *

st

)

Definition at line 59 of file st_cb_clear.c.

References pipe_rasterizer_state::bypass_clipping, st_context::clear, st_context::frag_shader, st_context::fs, pipe_rasterizer_state::gl_rasterization_rules, st_context::pipe, st_context::raster, pipe_viewport_state::scale, semantic_names, TGSI_SEMANTIC_COLOR, TGSI_SEMANTIC_POSITION, pipe_viewport_state::translate, util_make_fragment_passthrough_shader(), util_make_vertex_passthrough_shader(), st_context::vert_shader, st_context::viewport, and st_context::vs.

{
   struct pipe_context *pipe = st->pipe;

   /* rasterizer state: bypass clipping */
   memset(&st->clear.raster, 0, sizeof(st->clear.raster));
   st->clear.raster.gl_rasterization_rules = 1;
   st->clear.raster.bypass_clipping = 1;

   /* viewport state: identity since we're drawing in window coords */
   st->clear.viewport.scale[0] = 1.0;
   st->clear.viewport.scale[1] = 1.0;
   st->clear.viewport.scale[2] = 1.0;
   st->clear.viewport.scale[3] = 1.0;
   st->clear.viewport.translate[0] = 0.0;
   st->clear.viewport.translate[1] = 0.0;
   st->clear.viewport.translate[2] = 0.0;
   st->clear.viewport.translate[3] = 0.0;

   /* fragment shader state: color pass-through program */
   st->clear.fs =
      util_make_fragment_passthrough_shader(pipe, &st->clear.frag_shader);

   /* vertex shader state: color/position pass-through */
   {
      const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
                                      TGSI_SEMANTIC_COLOR };
      const uint semantic_indexes[] = { 0, 0 };
      st->clear.vs = util_make_vertex_passthrough_shader(pipe, 2,
                                                         semantic_names,
                                                         semantic_indexes,
                                                         &st->clear.vert_shader);
   }
}

void st_init_clear_functions

(

struct dd_function_table *

functions

)

Definition at line 599 of file st_cb_clear.c.

References st_clear().

{
   functions->Clear = st_clear;
}

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