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support retina / scale factor between pixel size and screen coordinate size

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This commit is contained in:
Erwin Coumans
2017-09-20 10:07:18 -07:00
parent c47019e0af
commit fb05763093
4 changed files with 24 additions and 11 deletions
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28
examples/OpenGLWindow/GLFWOpenGLWindow.cpp
View File

@@ -29,6 +29,7 @@ struct GLFWOpenGLWindowInternalData
b3RenderCallback m_renderCallback;
int m_width;
int m_height;
float m_retinaScaleFactor;
GLFWwindow* m_glfwWindow;
@@ -48,6 +49,7 @@ struct GLFWOpenGLWindowInternalData
m_renderCallback(0),
m_width(0),
m_height(0),
m_retinaScaleFactor(1),
m_glfwWindow(0)
{
}
@@ -243,9 +245,8 @@ void GLFWOpenGLWindow::resizeInternal(int width,int height)
{
getResizeCallback()(width,height);
}
m_data->m_width = width;
m_data->m_height = height;
glViewport (0,0,width,height);
glfwGetFramebufferSize(m_data->m_glfwWindow, &m_data->m_width, &m_data->m_height);
glViewport (0,0,m_data->m_width,m_data->m_height);
}
void GLFWOpenGLWindow::createDefaultWindow(int width, int height, const char* title)
@@ -260,6 +261,7 @@ void GLFWOpenGLWindow::createDefaultWindow(int width, int height, const char* ti
void GLFWOpenGLWindow::createWindow(const b3gWindowConstructionInfo& ci)
{
btAssert(m_data->m_glfwWindow==0);
if (m_data->m_glfwWindow==0)
{
@@ -270,10 +272,12 @@ void GLFWOpenGLWindow::createWindow(const b3gWindowConstructionInfo& ci)
if (ci.m_openglVersion==2)
{
printf("V2\n");
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
} else
{
printf("V3\n");
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
@@ -282,14 +286,12 @@ void GLFWOpenGLWindow::createWindow(const b3gWindowConstructionInfo& ci)
m_data->m_glfwWindow = glfwCreateWindow(ci.m_width, ci.m_height, ci.m_title, NULL, NULL);
m_data->m_width = ci.m_width;
m_data->m_height = ci.m_height;
if (!m_data->m_glfwWindow)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwSetKeyCallback(m_data->m_glfwWindow,GLFWKeyCallback);
glfwSetMouseButtonCallback(m_data->m_glfwWindow,GLFWMouseButtonCallback);
@@ -304,7 +306,11 @@ void GLFWOpenGLWindow::createWindow(const b3gWindowConstructionInfo& ci)
glfwMakeContextCurrent(m_data->m_glfwWindow);
gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);
glfwSwapInterval(0);//1);
glfwGetFramebufferSize(m_data->m_glfwWindow, &m_data->m_width, &m_data->m_height);
int windowWidth, windowHeight;
glfwGetWindowSize(m_data->m_glfwWindow, &windowWidth, &windowHeight);
m_data->m_retinaScaleFactor = float(m_data->m_width)/float(windowWidth);
glViewport(0,0,m_data->m_width, m_data->m_height);
}
}
@@ -416,6 +422,7 @@ b3MouseButtonCallback GLFWOpenGLWindow::getMouseButtonCallback()
void GLFWOpenGLWindow::setResizeCallback(b3ResizeCallback resizeCallback)
{
m_data->m_resizeCallback = resizeCallback;
getResizeCallback()(m_data->m_width/getRetinaScale(),m_data->m_height/getRetinaScale());
}
b3ResizeCallback GLFWOpenGLWindow::getResizeCallback()
@@ -460,7 +467,7 @@ void GLFWOpenGLWindow::setWindowTitle(const char* title)
float GLFWOpenGLWindow::getRetinaScale() const
{
return 1.f;
return m_data->m_retinaScaleFactor;
}
void GLFWOpenGLWindow::setAllowRetina(bool allow)
{
@@ -472,7 +479,8 @@ int GLFWOpenGLWindow::getWidth() const
{
glfwGetFramebufferSize(m_data->m_glfwWindow, &m_data->m_width, &m_data->m_height);
}
return m_data->m_width;
int width = m_data->m_width/m_data->m_retinaScaleFactor;
return width;
}
int GLFWOpenGLWindow::getHeight() const
{
@@ -480,7 +488,7 @@ int GLFWOpenGLWindow::getHeight() const
{
glfwGetFramebufferSize(m_data->m_glfwWindow, &m_data->m_width, &m_data->m_height);
}
return m_data->m_height;
return m_data->m_height/m_data->m_retinaScaleFactor;
}
int GLFWOpenGLWindow::fileOpenDialog(char* fileName, int maxFileNameLength)

3
examples/OpenGLWindow/MacOpenGLWindow.cpp
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@@ -1,3 +1,4 @@
#ifndef B3_USE_GLFW
#ifdef __APPLE__
#include "MacOpenGLWindow.h"
@@ -190,6 +191,6 @@ void MacOpenGLWindow::setAllowRetina(bool allow)
#endif //__APPLE__
#endif //B3_USE_GLFW

4
examples/OpenGLWindow/MacOpenGLWindowObjC.m
View File

@@ -1,3 +1,5 @@
#ifndef B3_USE_GLFW
#include "MacOpenGLWindowObjC.h"
#define GL_DO_NOT_WARN_IF_MULTI_GL_VERSION_HEADERS_INCLUDED
@@ -1231,3 +1233,5 @@ b3ResizeCallback Mac_getResizeCallback(struct MacOpenGLWindowInternalData* m_int
{
return [m_internalData->m_myview getResizeCallback];
}
#endif //B3_USE_GLFW