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Improved tearing test.

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Added support for arbitrary swap intervals, including negative ones if
(GLX|WGL)_EXT_swap_control_tear is available.
This commit is contained in:
Camilla Berglund 2015-01-26 00:41:27 +01:00
parent 8d4ba0aa83
commit 8503d53018
1 changed files with 28 additions and 4 deletions
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32
tests/tearing.c
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@ -36,6 +36,7 @@
#include "getopt.h" #include "getopt.h"
static GLboolean swap_tear;
static int swap_interval; static int swap_interval;
static double frame_rate; static double frame_rate;
@ -51,8 +52,10 @@ static void update_window_title(GLFWwindow* window)
{ {
char title[256]; char title[256];
sprintf(title, "Tearing detector (interval %i, %0.1f Hz)", sprintf(title, "Tearing detector (interval %i%s, %0.1f Hz)",
swap_interval, frame_rate); swap_interval,
(swap_tear && swap_interval < 0) ? " (swap tear)" : "",
frame_rate);
glfwSetWindowTitle(window, title); glfwSetWindowTitle(window, title);
} }
@ -81,9 +84,28 @@ static void key_callback(GLFWwindow* window, int key, int scancode, int action,
switch (key) switch (key)
{ {
case GLFW_KEY_SPACE: case GLFW_KEY_UP:
set_swap_interval(window, 1 - swap_interval); {
if (swap_interval + 1 > swap_interval)
set_swap_interval(window, swap_interval + 1);
break; break;
}
case GLFW_KEY_DOWN:
{
if (swap_tear)
{
if (swap_interval - 1 < swap_interval)
set_swap_interval(window, swap_interval - 1);
}
else
{
if (swap_interval - 1 >= 0)
set_swap_interval(window, swap_interval - 1);
}
break;
}
case GLFW_KEY_ESCAPE: case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, 1); glfwSetWindowShouldClose(window, 1);
break; break;
@ -152,6 +174,8 @@ int main(int argc, char** argv)
last_time = glfwGetTime(); last_time = glfwGetTime();
frame_rate = 0.0; frame_rate = 0.0;
swap_tear = (glfwExtensionSupported("WGL_EXT_swap_control_tear") ||
glfwExtensionSupported("GLX_EXT_swap_control_tear"));
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback); glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
glfwSetKeyCallback(window, key_callback); glfwSetKeyCallback(window, key_callback);