Exemple #1
0
void
volume_renderer::draw(const gl::render_context_ptr& context,
                      const volume_data_ptr&        vdata,
                      const vr_mode                 mode) const
{
    using namespace scm;
    using namespace scm::gl;
    using namespace scm::math;

    switch (mode) {
        case volume_raw:
            _program->uniform_subroutine(STAGE_FRAGMENT_SHADER, "volume_color_lookup", "raw_lookup");
            break;
        case volume_color_map:
            _program->uniform_subroutine(STAGE_FRAGMENT_SHADER, "volume_color_lookup", "raw_color_map_lookup");
            break;
    }

    _program->uniform("volume_lod", vdata->selected_lod());

    context_state_objects_guard     csg(context);
    context_texture_units_guard     tug(context);
    context_uniform_buffer_guard    ubg(context);

    context->reset_state_objects();

    context->set_depth_stencil_state(_dstate);
    context->set_blend_state(_bstate);
    context->set_rasterizer_state(_rstate);

    context->bind_uniform_buffer(_camera_block->block().block_buffer(), 0);
    context->bind_uniform_buffer(vdata->volume_block().block_buffer(),  1);

    context->bind_program(_program);

    context->reset_texture_units();

#if SCM_TEXT_NV_BINDLESS_TEXTURES != 1
    context->bind_texture(vdata->volume_raw(),      _sstate_lin_mip, 0);
    context->bind_texture(vdata->color_alpha_map(), _sstate_lin,     2);
#else
    context->bind_texture(vdata->texture_handles(), _sstate_nearest, 4);
#endif SCM_TEXT_NV_BINDLESS_TEXTURES != 1

    vdata->bbox_geometry()->draw(context, geometry::MODE_SOLID);
}
Exemple #2
0
void
texture_output::draw_texture_2d_uint(const gl::render_context_ptr& context,
                                     const gl::texture_2d_ptr&     tex,
                                     const math::vec4f&            scale,
                                     const math::vec2ui&           position,
                                     const math::vec2ui&           extend) const
{
    using namespace scm::gl;
    using namespace scm::math;

    context_state_objects_guard csg(context);
    context_texture_units_guard tug(context);
    context_framebuffer_guard   fbg(context);

    vec2ui tile_size = vec2ui(0);

    float aspect =  static_cast<float>(tex->descriptor()._size.x)
                  / static_cast<float>(tex->descriptor()._size.y);

    tile_size.x = extend.x;
    tile_size.y = static_cast<unsigned>(tile_size.x / aspect);

    if (tile_size.y > extend.y) {
        tile_size.y = extend.y;
        tile_size.x = static_cast<unsigned>(tile_size.y * aspect);
    }

    context->set_depth_stencil_state(_dstate_no_z_write);
    context->set_blend_state(_bstate_no_blend);
    context->set_rasterizer_state(_rstate_cull_back);

    context->set_viewport(viewport(position, tile_size));

    if (channel_count(tex->descriptor()._format) > 1) {
        _fs_program_color_uint->uniform("in_scale", scale);
        context->bind_program(_fs_program_color_uint);
    }
    else {
        _fs_program_gray_uint->uniform("in_scale", scale);
        context->bind_program(_fs_program_gray_uint);
    }
    context->bind_texture(tex, _filter_nearest, 0/*texture unit 0*/);

    _quad_geom->draw(context, geometry::MODE_SOLID);
}
void
height_field_tessellator::draw(const gl::render_context_ptr& context,
                               const height_field_data_ptr&  hf_data,
                               bool                    super_sample,
                               const mesh_mode               hf_mesh_mode,
                               const draw_mode               hf_draw_mode) const
{
    using namespace scm::gl;
    using namespace scm::math;

    static float tessellation_factor = 1.2f;
    static float tessellation_inc    = 0.01f;

    context_state_objects_guard     csg(context);
    context_program_guard           cpg(context);
    context_uniform_buffer_guard    ubg(context);
    context_texture_units_guard     tug(context);

    tessellation_factor += tessellation_inc;

    if (tessellation_factor >= 32.0) tessellation_inc = -tessellation_inc;
    if (tessellation_factor <  1.1)  tessellation_inc = -tessellation_inc;


    context->bind_uniform_buffer(_main_camera_block->block().block_buffer(), 0);

    context->bind_texture(hf_data->height_map(),  _sstate_linear_mip, 0);
    context->bind_texture(hf_data->height_map(),  _sstate_nearest,    1);
    context->bind_texture(hf_data->density_map(), _sstate_nearest,    2);
    context->bind_texture(hf_data->color_map(),   _sstate_linear,     3);

    context->set_depth_stencil_state(_dstate_less);
    context->set_blend_state(_bstate_no_blend);
    //context->set_blend_state(_bstate_omsa);

    if (hf_draw_mode == MODE_SOLID) {
        context->set_rasterizer_state(super_sample ? _rstate_ms_solid_ss : _rstate_ms_solid);
    }
    else if (hf_draw_mode == MODE_WIRE_FRAME) {
        context->set_rasterizer_state(_rstate_ms_wire);
    }

    if (hf_mesh_mode == MODE_QUAD_PATCHES) {
        _hf_quad_tessellation_program->uniform("tessellation_factor",  5.0f);//tessellation_factor);
        _hf_quad_tessellation_program->uniform("model_matrix",  hf_data->transform());
        _hf_quad_tessellation_program->uniform("height_scale",  hf_data->extends().z);
        _hf_quad_tessellation_program->uniform("pixel_tolerance",  _pixel_tolerance);
        _hf_quad_tessellation_program->uniform("screen_size",  vec2f(1920.0f, 1200.0f));

        context->bind_program(_hf_quad_tessellation_program);

        hf_data->patch_mesh()->draw(context, patch_grid_mesh::MODE_QUAD_PATCHES);
    }
    else if (hf_mesh_mode == MODE_TRIANGLE_PATCHES) {
        _hf_triangle_tessellation_program->uniform("tessellation_factor",  5.0f);//tessellation_factor);
        _hf_triangle_tessellation_program->uniform("model_matrix",  hf_data->transform());
        _hf_triangle_tessellation_program->uniform("height_scale",  hf_data->extends().z);
        _hf_triangle_tessellation_program->uniform("pixel_tolerance",  _pixel_tolerance);
        _hf_triangle_tessellation_program->uniform("screen_size",  vec2f(1920.0f, 1200.0f));

        context->bind_texture(hf_data->triangle_edge_density_buffer(), _sstate_nearest, 4);
        context->bind_program(_hf_triangle_tessellation_program);

        hf_data->patch_mesh()->draw(context, patch_grid_mesh::MODE_TRIANGLE_PATCHES);
    }
    else {
        err() << log::warning << "height_field_tessellator::draw(): unknown mesh mode." << log::end;
    }
}