Ejemplos de draw_stencil_pixels en C++ (Cpp)

Ejemplo n.º 1

Archivo: st_cb_drawpixels.c Proyecto: toastpp/toastpp

/**
 * Called via ctx->Driver.DrawPixels()
 */
static void
st_DrawPixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height,
              GLenum format, GLenum type,
              const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)
{
   struct st_fragment_program *stfp;
   struct st_vertex_program *stvp;
   struct st_context *st = ctx->st;
   struct pipe_surface *ps;
   const GLfloat *color;

   if (format == GL_STENCIL_INDEX ||
       format == GL_DEPTH_STENCIL) {
      draw_stencil_pixels(ctx, x, y, width, height, format, type,
                          unpack, pixels);
      return;
   }

   _mesa_set_vp_override( ctx, TRUE );
   _mesa_update_state( ctx );

   st_validate_state(st);

   if (format == GL_DEPTH_COMPONENT) {
      ps = st->state.framebuffer.zsbuf;
      stfp = make_fragment_shader_z(ctx->st);
      stvp = st_make_passthrough_vertex_shader(ctx->st, GL_TRUE);
      color = ctx->Current.RasterColor;
   }
   else {
      ps = st->state.framebuffer.cbufs[0];
      stfp = combined_drawpix_fragment_program(ctx);
      stvp = st_make_passthrough_vertex_shader(ctx->st, GL_FALSE);
      color = NULL;
   }

   /* draw with textured quad */
   {
      struct pipe_texture *pt
         = make_texture(ctx->st, width, height, format, type, unpack, pixels);
      if (pt) {
         draw_textured_quad(ctx, x, y, ctx->Current.RasterPos[2],
                            width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
                            pt, stvp, stfp, color, GL_FALSE);
         pipe_texture_reference(&pt, NULL);
      }
   }

   _mesa_set_vp_override( ctx, FALSE );
}

Ejemplo n.º 2

Archivo: st_cb_drawpixels.c Proyecto: iquiw/xsrc

/**
 * Called via ctx->Driver.DrawPixels()
 */
static void
st_DrawPixels(struct gl_context *ctx, GLint x, GLint y,
              GLsizei width, GLsizei height,
              GLenum format, GLenum type,
              const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)
{
   void *driver_vp, *driver_fp;
   struct st_context *st = st_context(ctx);
   const GLfloat *color;
   struct pipe_context *pipe = st->pipe;
   GLboolean write_stencil = GL_FALSE, write_depth = GL_FALSE;
   struct pipe_sampler_view *sv[2];
   int num_sampler_view = 1;
   enum pipe_format stencil_format = PIPE_FORMAT_NONE;
   struct st_fp_variant *fpv;

   if (format == GL_DEPTH_STENCIL)
      write_stencil = write_depth = GL_TRUE;
   else if (format == GL_STENCIL_INDEX)
      write_stencil = GL_TRUE;
   else if (format == GL_DEPTH_COMPONENT)
      write_depth = GL_TRUE;

   if (write_stencil) {
      enum pipe_format tex_format;
      /* can we write to stencil if not fallback */
      if (!pipe->screen->get_param(pipe->screen, PIPE_CAP_SHADER_STENCIL_EXPORT))
	 goto stencil_fallback;

      tex_format = st_choose_format(st->pipe->screen, base_format(format),
                                    GL_NONE, GL_NONE,
                                    PIPE_TEXTURE_2D,
				    0, PIPE_BIND_SAMPLER_VIEW);
      if (tex_format == PIPE_FORMAT_Z24_UNORM_S8_USCALED)
	 stencil_format = PIPE_FORMAT_X24S8_USCALED;
      else if (tex_format == PIPE_FORMAT_S8_USCALED_Z24_UNORM)
	 stencil_format = PIPE_FORMAT_S8X24_USCALED;
      else
	 stencil_format = PIPE_FORMAT_S8_USCALED;
      if (stencil_format == PIPE_FORMAT_NONE)
	 goto stencil_fallback;
   }

   /* Mesa state should be up to date by now */
   assert(ctx->NewState == 0x0);

   st_validate_state(st);

   /*
    * Get vertex/fragment shaders
    */
   if (write_depth || write_stencil) {
      fpv = get_depth_stencil_fp_variant(st, write_depth, write_stencil);

      driver_fp = fpv->driver_shader;

      driver_vp = make_passthrough_vertex_shader(st, GL_TRUE);

      color = ctx->Current.RasterColor;
   }
   else {
      fpv = get_color_fp_variant(st);

      driver_fp = fpv->driver_shader;

      driver_vp = make_passthrough_vertex_shader(st, GL_FALSE);

      color = NULL;
      if (st->pixel_xfer.pixelmap_enabled) {
	  sv[1] = st->pixel_xfer.pixelmap_sampler_view;
	  num_sampler_view++;
      }
   }

   /* update fragment program constants */
   st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT);

   /* draw with textured quad */
   {
      struct pipe_resource *pt
         = make_texture(st, width, height, format, type, unpack, pixels);
      if (pt) {
         sv[0] = st_create_texture_sampler_view(st->pipe, pt);

         if (sv[0]) {
	    if (write_stencil) {
	       sv[1] = st_create_texture_sampler_view_format(st->pipe, pt,
                                                             stencil_format);
	       num_sampler_view++;
	    }

            draw_textured_quad(ctx, x, y, ctx->Current.RasterPos[2],
                               width, height,
                               ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
                               sv,
                               num_sampler_view,
                               driver_vp,
                               driver_fp,
                               color, GL_FALSE, write_depth, write_stencil);
            pipe_sampler_view_reference(&sv[0], NULL);
            if (num_sampler_view > 1)
               pipe_sampler_view_reference(&sv[1], NULL);
         }
         pipe_resource_reference(&pt, NULL);
      }
   }
   return;

stencil_fallback:
   draw_stencil_pixels(ctx, x, y, width, height, format, type,
		       unpack, pixels);
}