本文整理汇总了C++中Evas_GL_API::glClearColor方法的典型用法代码示例。如果您正苦于以下问题：C++ Evas_GL_API::glClearColor方法的具体用法？C++ Evas_GL_API::glClearColor怎么用？C++ Evas_GL_API::glClearColor使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Evas_GL_API的用法示例。
在下文中一共展示了Evas_GL_API::glClearColor方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1:
// draw callback is where all the main GL rendering happens
static void
_draw_gl(Evas_Object *obj)
{
Evas_GL_API *gl = elm_glview_gl_api_get(obj);
GLData *gld = evas_object_data_get(obj, "gld");
if (!gld) return;
int w, h;
elm_glview_size_get(obj, &w, &h);
gl->glViewport(0, 0, w, h);
gl->glClearColor(red, 0.8, 0.3, 1);
gl->glClear(GL_COLOR_BUFFER_BIT);
// Draw a Triangle
gl->glEnable(GL_BLEND);
gl->glUseProgram(gld->program);
gl->glBindBuffer(GL_ARRAY_BUFFER, gld->vbo);
gl->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
gl->glEnableVertexAttribArray(0);
gl->glDrawArrays(GL_TRIANGLES, 0, 3);
// Optional - Flush the GL pipeline
gl->glFinish();
red -= 0.1;
if (0.0 > red) red = 1.0;
}示例2: createGLSurface
bool EwkView::createGLSurface()
{
if (!m_isAccelerated)
return true;
static Evas_GL_Config evasGLConfig = {
EVAS_GL_RGBA_8888,
EVAS_GL_DEPTH_BIT_8,
EVAS_GL_STENCIL_NONE,
EVAS_GL_OPTIONS_NONE,
EVAS_GL_MULTISAMPLE_NONE,
#if defined(EVAS_GL_API_VERSION) && EVAS_GL_API_VERSION >= 2
EVAS_GL_GLES_2_X
#endif
};
// Recreate to current size: Replaces if non-null, and frees existing surface after (OwnPtr).
if (deviceSize().width() && deviceSize().height()) {
Evas_GL_Surface* surface = nullptr;
surface = evas_gl_surface_create(m_evasGL, &evasGLConfig, deviceSize().width(), deviceSize().height());
if (!surface)
return false;
m_evasGLSurface = std::make_unique<EvasGLSurface>(m_evasGL, surface);
}
if (!m_evasGLSurface)
return false;
Evas_Native_Surface nativeSurface;
evas_gl_native_surface_get(m_evasGL, m_evasGLSurface->surface(), &nativeSurface);
evas_object_image_native_surface_set(smartData()->image, &nativeSurface);
evas_gl_make_current(m_evasGL, m_evasGLSurface->surface(), m_evasGLContext->context());
Evas_GL_API* gl = evas_gl_api_get(m_evasGL);
WKPoint boundsEnd = WKViewUserViewportToScene(wkView(), WKPointMake(deviceSize().width(), deviceSize().height()));
gl->glViewport(0, 0, boundsEnd.x, boundsEnd.y);
gl->glClearColor(1.0, 1.0, 1.0, 0);
gl->glClear(GL_COLOR_BUFFER_BIT);
return true;
}示例3: memcpy
static void
gears_draw(GLData *gld)
{
Evas_GL_API *gl = gld->glapi;
static const GLfloat red[4] = { 0.8, 0.1, 0.0, 1.0 };
static const GLfloat green[4] = { 0.0, 0.8, 0.2, 1.0 };
static const GLfloat blue[4] = { 0.2, 0.2, 1.0, 1.0 };
GLfloat m[16];
gl->glClearColor(0.8, 0.8, 0.1, 0.5);
gl->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
memcpy(m, gld->proj, sizeof m);
rotate(m, 2 * M_PI * gld->view_rotx / 360.0, 1, 0, 0);
rotate(m, 2 * M_PI * gld->view_roty / 360.0, 0, 1, 0);
rotate(m, 2 * M_PI * gld->view_rotz / 360.0, 0, 0, 1);
draw_gear(gld, gld->gear1, m, -3.0, -2.0, gld->angle, red);
draw_gear(gld, gld->gear2, m, 3.1, -2.0, -2 * gld->angle - 9.0, green);
draw_gear(gld, gld->gear3, m, -3.1, 4.2, -2 * gld->angle - 25.0, blue);
}