void opengl_impl::resize(int w, int h) {
gl_viewport(0, 0, w, h);
gl_matrix_mode(GL_PROJECTION);
gl_load_identity();
gl_ortho(0.0, 100.0, 0.0, 100.0, -1.0, 1.0);
gl_matrix_mode(GL_MODELVIEW);
gl_load_identity();
}
void ctx_present(struct context *ctx)
{
glBindFramebuffer(GL_FRAMEBUFFER, 0);
gl_viewport(ctx->winw, ctx->winh);
gl_clear(0.f, 0.f, 0.f, 1.f);
if (ctx->hidpi)
ctx_scale(ctx, 2, 2);
framebuffer_draw(ctx->screen, ctx);
glfwSwapBuffers(ctx->win);
}
void render_target::end(ui8* data)
{
if(data)
{
#if defined(__PBO__)
glReadBuffer(GL_COLOR_ATTACHMENT0);
gl_bind_buffer(GL_PIXEL_PACK_BUFFER, m_pixel_buffer);
glReadPixels(0, 0, m_size.x, m_size.y, m_format, GL_UNSIGNED_BYTE, NULL);
ui8* pointer = static_cast<ui8*>(glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY));
if (pointer)
{
ui32 size = m_size.x * m_size.y;
if(m_format == GL_RGBA)
{
size *= 4;
}
else if(m_format == GL_RGB)
{
size *= 3;
}
memcpy(data, pointer, size);
glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
}
#else
glReadPixels(0, 0, m_size.x, m_size.y, m_format, GL_UNSIGNED_BYTE, data);
#endif
}
assert(m_graphics_context != nullptr);
gl_bind_frame_buffer(GL_FRAMEBUFFER, m_graphics_context->get_frame_buffer());
gl_viewport(0, 0, m_graphics_context->get_width(), m_graphics_context->get_height());
}
void render_technique_ss::bind(void)
{
gl_bind_frame_buffer(GL_FRAMEBUFFER, m_frame_buffer);
gl_viewport(0, 0, m_frame_width, m_frame_height);
gl_disable(GL_DEPTH_TEST);
material::get_cached_parameters()->m_is_depth_test = false;
gl_depth_mask(GL_FALSE);
material::get_cached_parameters()->m_is_depth_mask = false;
gl_disable(GL_STENCIL_TEST);
material::get_cached_parameters()->m_is_stencil_test = false;
gl_clear_color(m_clear_color.r, m_clear_color.g, m_clear_color.b, m_clear_color.a);
gl_clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
if(m_material->get_shader()->is_loaded() &&
m_material->get_shader()->is_commited())
{
m_material->bind();
m_quad->bind(m_material->get_shader()->get_guid(), m_material->get_shader()->get_attributes());
}
}
static void framebuffer_size_callback(GLFWwindow *win, int w, int h)
{
struct context *ctx = glfwGetWindowUserPointer(win);
infof("ctx", "resizing context to %dx%d", w, h);
framebuffer_free(ctx->screen);
ctx->width = ctx->hidpi ? w / 2 : w;
ctx->height = ctx->hidpi ? h / 2 : h;
ctx->screen = framebuffer_screen(ctx->width, ctx->height, NULL);
ctx->winw = w;
ctx->winh = h;
ctx->ortho = mat4ortho(w, h);
gl_viewport(w, h);
ctx_setup_ortho(ctx);
ctx_update_cursor_pos(ctx);
if (ctx->on_resize)
ctx->on_resize(ctx, ctx->width, ctx->height);
}
/**
* @brief Resets viewport to default
*/
void gl_defViewport (void)
{
gl_viewport( gl_view_x, gl_view_y, gl_view_w, gl_view_h );
}
void render_target::begin()
{
gl_bind_frame_buffer(GL_FRAMEBUFFER, m_frame_buffer);
gl_viewport(0, 0, m_size.x, m_size.y);
}