diff options
Diffstat (limited to 'platform/default/glfw_view.cpp')
| -rw-r--r-- | platform/default/glfw_view.cpp | 73 |
1 files changed, 63 insertions, 10 deletions
diff --git a/platform/default/glfw_view.cpp b/platform/default/glfw_view.cpp index 83e2c65585..a4e8d7059f 100644 --- a/platform/default/glfw_view.cpp +++ b/platform/default/glfw_view.cpp @@ -1,10 +1,12 @@ +#include <mbgl/platform/default/glfw_view.hpp> #include <mbgl/annotation/point_annotation.hpp> #include <mbgl/annotation/shape_annotation.hpp> #include <mbgl/sprite/sprite_image.hpp> -#include <mbgl/platform/default/glfw_view.hpp> -#include <mbgl/platform/gl.hpp> +#include <mbgl/gl/gl.hpp> +#include <mbgl/gl/gl_values.hpp> +#include <mbgl/gl/gl_helper.hpp> #include <mbgl/platform/log.hpp> -#include <mbgl/util/gl_helper.hpp> +#include <mbgl/platform/platform.hpp> #include <mbgl/util/string.hpp> #include <mbgl/util/chrono.hpp> @@ -135,6 +137,9 @@ void GLFWView::onKey(GLFWwindow *window, int key, int /*scancode*/, int action, if (!mods) view->map->resetPosition(); break; + case GLFW_KEY_C: + view->toggleClipMasks(); + break; case GLFW_KEY_S: if (view->changeStyleCallback) view->changeStyleCallback(); @@ -231,6 +236,11 @@ void GLFWView::nextOrientation() { } } +void GLFWView::toggleClipMasks() { + showClipMasks = !showClipMasks; + map->update(mbgl::Update::Repaint); +} + void GLFWView::addRandomCustomPointAnnotations(int count) { std::vector<mbgl::PointAnnotation> points; @@ -438,9 +448,52 @@ void GLFWView::beforeRender() { } void GLFWView::afterRender() { + if (showClipMasks) { + renderClipMasks(); + } + glfwSwapBuffers(window); } +void GLFWView::renderClipMasks() { + // Read the stencil buffer + auto pixels = std::make_unique<uint8_t[]>(fbWidth * fbHeight); + glReadPixels(0, // GLint x + 0, // GLint y + fbWidth, // GLsizei width + fbHeight, // GLsizei height + GL_STENCIL_INDEX, // GLenum format + GL_UNSIGNED_BYTE, // GLenum type + pixels.get() // GLvoid * data + ); + + // Scale the Stencil buffer to cover the entire color space. + auto it = pixels.get(); + auto end = it + fbWidth * fbHeight; + const auto factor = 255.0f / *std::max_element(it, end); + for (; it != end; ++it) { + *it *= factor; + } + + using namespace mbgl::gl; + Preserve<PixelZoom> pixelZoom; + Preserve<RasterPos> rasterPos; + Preserve<StencilTest> stencilTest; + Preserve<DepthTest> depthTest; + Preserve<Program> program; + Preserve<ColorMask> colorMask; + + MBGL_CHECK_ERROR(glPixelZoom(1.0f, 1.0f)); + MBGL_CHECK_ERROR(glRasterPos2f(-1.0f, -1.0f)); + MBGL_CHECK_ERROR(glDisable(GL_STENCIL_TEST)); + MBGL_CHECK_ERROR(glDisable(GL_DEPTH_TEST)); + MBGL_CHECK_ERROR(glUseProgram(0)); + MBGL_CHECK_ERROR(glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE)); + MBGL_CHECK_ERROR(glWindowPos2i(0, 0)); + + MBGL_CHECK_ERROR(glDrawPixels(fbWidth, fbHeight, GL_LUMINANCE, GL_UNSIGNED_BYTE, pixels.get())); +} + void GLFWView::report(float duration) { frames++; frameTime += duration; @@ -496,8 +549,8 @@ void showDebugImage(std::string name, const char *data, size_t width, size_t hei float scale = static_cast<float>(fbWidth) / static_cast<float>(width); { - gl::PreservePixelZoom pixelZoom; - gl::PreserveRasterPos rasterPos; + gl::Preserve<gl::PixelZoom> pixelZoom; + gl::Preserve<gl::RasterPos> rasterPos; MBGL_CHECK_ERROR(glPixelZoom(scale, -scale)); MBGL_CHECK_ERROR(glRasterPos2f(-1.0f, 1.0f)); @@ -533,11 +586,11 @@ void showColorDebugImage(std::string name, const char *data, size_t logicalWidth float yScale = static_cast<float>(fbHeight) / static_cast<float>(height); { - gl::PreserveClearColor clearColor; - gl::PreserveBlend blend; - gl::PreserveBlendFunc blendFunc; - gl::PreservePixelZoom pixelZoom; - gl::PreserveRasterPos rasterPos; + gl::Preserve<gl::ClearColor> clearColor; + gl::Preserve<gl::Blend> blend; + gl::Preserve<gl::BlendFunc> blendFunc; + gl::Preserve<gl::PixelZoom> pixelZoom; + gl::Preserve<gl::RasterPos> rasterPos; MBGL_CHECK_ERROR(glClearColor(0.8, 0.8, 0.8, 1)); MBGL_CHECK_ERROR(glClear(GL_COLOR_BUFFER_BIT)); |