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Fixed accuracy test on Retina displays.

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This commit is contained in:
Camilla Berglund 2015-05-21 00:42:07 +02:00
parent a1641cdec9
commit 22e9451192
1 changed files with 19 additions and 23 deletions
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42
tests/accuracy.c
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@ -35,7 +35,6 @@
#include <stdlib.h> #include <stdlib.h>
static double cursor_x = 0.0, cursor_y = 0.0; static double cursor_x = 0.0, cursor_y = 0.0;
static int window_width = 640, window_height = 480;
static int swap_interval = 1; static int swap_interval = 1;
static void set_swap_interval(GLFWwindow* window, int interval) static void set_swap_interval(GLFWwindow* window, int interval)
@ -55,18 +54,6 @@ static void error_callback(int error, const char* description)
fprintf(stderr, "Error: %s\n", description); fprintf(stderr, "Error: %s\n", description);
} }
static void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
window_width = width;
window_height = height;
glViewport(0, 0, window_width, window_height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.f, window_width, 0.f, window_height, 0.f, 1.f);
}
static void cursor_position_callback(GLFWwindow* window, double x, double y) static void cursor_position_callback(GLFWwindow* window, double x, double y)
{ {
cursor_x = x; cursor_x = x;
@ -82,14 +69,13 @@ static void key_callback(GLFWwindow* window, int key, int scancode, int action,
int main(void) int main(void)
{ {
GLFWwindow* window; GLFWwindow* window;
int width, height;
glfwSetErrorCallback(error_callback); glfwSetErrorCallback(error_callback);
if (!glfwInit()) if (!glfwInit())
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
window = glfwCreateWindow(window_width, window_height, "", NULL, NULL); window = glfwCreateWindow(640, 480, "", NULL, NULL);
if (!window) if (!window)
{ {
glfwTerminate(); glfwTerminate();
@ -97,25 +83,35 @@ int main(void)
} }
glfwSetCursorPosCallback(window, cursor_position_callback); glfwSetCursorPosCallback(window, cursor_position_callback);
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
glfwSetKeyCallback(window, key_callback); glfwSetKeyCallback(window, key_callback);
glfwMakeContextCurrent(window); glfwMakeContextCurrent(window);
glfwGetFramebufferSize(window, &width, &height);
framebuffer_size_callback(window, width, height);
set_swap_interval(window, swap_interval); set_swap_interval(window, swap_interval);
while (!glfwWindowShouldClose(window)) while (!glfwWindowShouldClose(window))
{ {
int wnd_width, wnd_height, fb_width, fb_height;
float scale;
glfwGetWindowSize(window, &wnd_width, &wnd_height);
glfwGetFramebufferSize(window, &fb_width, &fb_height);
scale = (float) fb_width / (float) wnd_width;
glClear(GL_COLOR_BUFFER_BIT); glClear(GL_COLOR_BUFFER_BIT);
glViewport(0, 0, fb_width, fb_height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.f, fb_width, 0.f, fb_height, 0.f, 1.f);
glBegin(GL_LINES); glBegin(GL_LINES);
glVertex2f(0.f, (GLfloat) (window_height - cursor_y)); glVertex2f(0.f, (GLfloat) (fb_height - cursor_y * scale));
glVertex2f((GLfloat) window_width, (GLfloat) (window_height - cursor_y)); glVertex2f((GLfloat) fb_width, (GLfloat) (fb_height - cursor_y * scale));
glVertex2f((GLfloat) cursor_x, 0.f); glVertex2f((GLfloat) cursor_x * scale, 0.f);
glVertex2f((GLfloat) cursor_x, (GLfloat) window_height); glVertex2f((GLfloat) cursor_x * scale, (GLfloat) fb_height);
glEnd(); glEnd();
glfwSwapBuffers(window); glfwSwapBuffers(window);