本文整理汇总了C++中Evas_GL_API::glDrawArrays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::glDrawArrays方法的具体用法？C++ Evas_GL_API::glDrawArrays怎么用？C++ Evas_GL_API::glDrawArrays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::glDrawArrays方法的2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: memcpy
static void
draw_gear(GLData *gld, Gear *gear, GLfloat *m,
GLfloat x, GLfloat y, GLfloat angle, const GLfloat *color)
{
Evas_GL_API *gl = gld->glapi;
GLfloat tmp[16];
memcpy(tmp, m, sizeof tmp);
translate(tmp, x, y, 0);
rotate(tmp, 2 * M_PI * angle / 360.0, 0, 0, 1);
gl->glUniformMatrix4fv(gld->proj_location, 1, GL_FALSE, tmp);
gl->glUniform3fv(gld->light_location, 1, gld->light);
gl->glUniform4fv(gld->color_location, 1, color);
gl->glBindBuffer(GL_ARRAY_BUFFER, gear->vbo);
gl->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE,
6 * sizeof(GLfloat), NULL);
gl->glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE,
6 * sizeof(GLfloat), (GLfloat *) 0 + 3);
gl->glEnableVertexAttribArray(0);
gl->glEnableVertexAttribArray(1);
gl->glDrawArrays(GL_TRIANGLE_STRIP, 0, gear->count);
}