diff options
Diffstat (limited to 'drivers/gles3/rasterizer_canvas_gles3.cpp')
| -rw-r--r-- | drivers/gles3/rasterizer_canvas_gles3.cpp | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gles3/rasterizer_canvas_gles3.cpp b/drivers/gles3/rasterizer_canvas_gles3.cpp index 856c83e297..a9b46baf53 100644 --- a/drivers/gles3/rasterizer_canvas_gles3.cpp +++ b/drivers/gles3/rasterizer_canvas_gles3.cpp @@ -1869,6 +1869,39 @@ void RasterizerCanvasGLES3::draw_generic_textured_rect(const Rect2 &p_rect, cons glDrawArrays(GL_TRIANGLE_FAN, 0, 4); } +void RasterizerCanvasGLES3::draw_lens_distortion_rect(const Rect2 &p_rect, float p_k1, float p_k2, const Vector2 &p_eye_center, float p_oversample) { + Vector2 half_size; + if (storage->frame.current_rt) { + half_size = Vector2(storage->frame.current_rt->width, storage->frame.current_rt->height); + } else { + half_size = OS::get_singleton()->get_window_size(); + } + half_size *= 0.5; + Vector2 offset((p_rect.position.x - half_size.x) / half_size.x, (p_rect.position.y - half_size.y) / half_size.y); + Vector2 scale(p_rect.size.x / half_size.x, p_rect.size.y / half_size.y); + + float aspect_ratio = p_rect.size.x / p_rect.size.y; + + // setup our lens shader + state.lens_shader.bind(); + state.lens_shader.set_uniform(LensDistortedShaderGLES3::OFFSET, offset); + state.lens_shader.set_uniform(LensDistortedShaderGLES3::SCALE, scale); + state.lens_shader.set_uniform(LensDistortedShaderGLES3::K1, p_k1); + state.lens_shader.set_uniform(LensDistortedShaderGLES3::K2, p_k2); + state.lens_shader.set_uniform(LensDistortedShaderGLES3::EYE_CENTER, p_eye_center); + state.lens_shader.set_uniform(LensDistortedShaderGLES3::UPSCALE, p_oversample); + state.lens_shader.set_uniform(LensDistortedShaderGLES3::ASPECT_RATIO, aspect_ratio); + + glBindBufferBase(GL_UNIFORM_BUFFER, 0, state.canvas_item_ubo); + glBindVertexArray(data.canvas_quad_array); + + // and draw + glDrawArrays(GL_TRIANGLE_FAN, 0, 4); + + glBindVertexArray(0); + glBindBufferBase(GL_UNIFORM_BUFFER, 0, 0); +} + void RasterizerCanvasGLES3::draw_window_margins(int *black_margin, RID *black_image) { Vector2 window_size = OS::get_singleton()->get_window_size(); @@ -2058,6 +2091,7 @@ void RasterizerCanvasGLES3::initialize() { state.canvas_shader.init(); state.canvas_shader.set_base_material_tex_index(2); state.canvas_shadow_shader.init(); + state.lens_shader.init(); state.canvas_shader.set_conditional(CanvasShaderGLES3::USE_RGBA_SHADOWS, storage->config.use_rgba_2d_shadows); state.canvas_shadow_shader.set_conditional(CanvasShadowShaderGLES3::USE_RGBA_SHADOWS, storage->config.use_rgba_2d_shadows); |