690833ef92
This patch will make Mapbox GL Core never use OpenGL directly. We should consider locking into OpenGL ES 2.0 to simplify the code path and remove #ifdefs.
111 lines
4.2 KiB
C++
111 lines
4.2 KiB
C++
#include <mbgl/test/util.hpp>
|
|
|
|
#include <mbgl/platform/gl_functions.hpp>
|
|
#include <mbgl/map/map.hpp>
|
|
#include <mbgl/util/default_thread_pool.hpp>
|
|
#include <mbgl/storage/default_file_source.hpp>
|
|
#include <mbgl/gl/defines.hpp>
|
|
#include <mbgl/gl/headless_frontend.hpp>
|
|
#include <mbgl/style/style.hpp>
|
|
#include <mbgl/style/layers/custom_layer.hpp>
|
|
#include <mbgl/style/layers/fill_layer.hpp>
|
|
#include <mbgl/util/io.hpp>
|
|
#include <mbgl/util/mat4.hpp>
|
|
#include <mbgl/util/run_loop.hpp>
|
|
|
|
using namespace mbgl;
|
|
using namespace mbgl::style;
|
|
using namespace mbgl::platform;
|
|
|
|
// Note that custom layers need to draw geometry with a z value of 1 to take advantage of
|
|
// depth-based fragment culling.
|
|
static const GLchar* vertexShaderSource = R"MBGL_SHADER(
|
|
attribute vec2 a_pos;
|
|
void main() {
|
|
gl_Position = vec4(a_pos, 1, 1);
|
|
}
|
|
)MBGL_SHADER";
|
|
|
|
static const GLchar* fragmentShaderSource = R"MBGL_SHADER(
|
|
void main() {
|
|
gl_FragColor = vec4(0, 0.5, 0, 0.5);
|
|
}
|
|
)MBGL_SHADER";
|
|
|
|
// Not using any mbgl-specific stuff (other than a basic error-checking macro) in the
|
|
// layer implementation because it is intended to reflect how someone using custom layers
|
|
// might actually write their own implementation.
|
|
|
|
class TestLayer : public mbgl::style::CustomLayerHost {
|
|
public:
|
|
void initialize() {
|
|
program = MBGL_CHECK_ERROR(glCreateProgram());
|
|
vertexShader = MBGL_CHECK_ERROR(glCreateShader(GL_VERTEX_SHADER));
|
|
fragmentShader = MBGL_CHECK_ERROR(glCreateShader(GL_FRAGMENT_SHADER));
|
|
|
|
MBGL_CHECK_ERROR(glShaderSource(vertexShader, 1, &vertexShaderSource, nullptr));
|
|
MBGL_CHECK_ERROR(glCompileShader(vertexShader));
|
|
MBGL_CHECK_ERROR(glAttachShader(program, vertexShader));
|
|
MBGL_CHECK_ERROR(glShaderSource(fragmentShader, 1, &fragmentShaderSource, nullptr));
|
|
MBGL_CHECK_ERROR(glCompileShader(fragmentShader));
|
|
MBGL_CHECK_ERROR(glAttachShader(program, fragmentShader));
|
|
MBGL_CHECK_ERROR(glLinkProgram(program));
|
|
a_pos = MBGL_CHECK_ERROR(glGetAttribLocation(program, "a_pos"));
|
|
|
|
GLfloat triangle[] = { 0, 0.5, 0.5, -0.5, -0.5, -0.5 };
|
|
MBGL_CHECK_ERROR(glGenBuffers(1, &buffer));
|
|
MBGL_CHECK_ERROR(glBindBuffer(GL_ARRAY_BUFFER, buffer));
|
|
MBGL_CHECK_ERROR(glBufferData(GL_ARRAY_BUFFER, 6 * sizeof(GLfloat), triangle, GL_STATIC_DRAW));
|
|
}
|
|
|
|
void render(const mbgl::style::CustomLayerRenderParameters&) {
|
|
MBGL_CHECK_ERROR(glUseProgram(program));
|
|
MBGL_CHECK_ERROR(glBindBuffer(GL_ARRAY_BUFFER, buffer));
|
|
MBGL_CHECK_ERROR(glEnableVertexAttribArray(a_pos));
|
|
MBGL_CHECK_ERROR(glVertexAttribPointer(a_pos, 2, GL_FLOAT, GL_FALSE, 0, nullptr));
|
|
MBGL_CHECK_ERROR(glDrawArrays(GL_TRIANGLE_STRIP, 0, 3));
|
|
}
|
|
|
|
void contextLost() {}
|
|
|
|
void deinitialize() {
|
|
if (program) {
|
|
MBGL_CHECK_ERROR(glDeleteBuffers(1, &buffer));
|
|
MBGL_CHECK_ERROR(glDetachShader(program, vertexShader));
|
|
MBGL_CHECK_ERROR(glDetachShader(program, fragmentShader));
|
|
MBGL_CHECK_ERROR(glDeleteShader(vertexShader));
|
|
MBGL_CHECK_ERROR(glDeleteShader(fragmentShader));
|
|
MBGL_CHECK_ERROR(glDeleteProgram(program));
|
|
}
|
|
}
|
|
|
|
GLuint program = 0;
|
|
GLuint vertexShader = 0;
|
|
GLuint fragmentShader = 0;
|
|
GLuint buffer = 0;
|
|
GLuint a_pos = 0;
|
|
};
|
|
|
|
TEST(CustomLayer, Basic) {
|
|
util::RunLoop loop;
|
|
|
|
DefaultFileSource fileSource(":memory:", "test/fixtures/api/assets");
|
|
ThreadPool threadPool(4);
|
|
float pixelRatio { 1 };
|
|
HeadlessFrontend frontend { pixelRatio, fileSource, threadPool };
|
|
Map map(frontend, MapObserver::nullObserver(), frontend.getSize(), pixelRatio, fileSource,
|
|
threadPool, MapMode::Static);
|
|
map.getStyle().loadJSON(util::read_file("test/fixtures/api/water.json"));
|
|
map.setLatLngZoom({ 37.8, -122.5 }, 10);
|
|
map.getStyle().addLayer(std::make_unique<CustomLayer>(
|
|
"custom",
|
|
std::make_unique<TestLayer>()));
|
|
|
|
auto layer = std::make_unique<FillLayer>("landcover", "mapbox");
|
|
layer->setSourceLayer("landcover");
|
|
layer->setFillColor(Color{ 1.0, 1.0, 0.0, 1.0 });
|
|
map.getStyle().addLayer(std::move(layer));
|
|
|
|
test::checkImage("test/fixtures/custom_layer/basic", frontend.render(map), 0.0006, 0.1);
|
|
}
|