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Null: Make platform more conformant

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This makes the null platform behave more like an actual stub.  More
queryable state is tracked and there is even a fake monitor with one
whole fake video mode.
This commit is contained in:
Camilla Löwy
2020-05-21 17:16:26 +02:00
parent c72da994ba
commit e0c77f71f9
4 changed files with 462 additions and 30 deletions
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82
src/null_monitor.c
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@@ -29,6 +29,37 @@
#include "internal.h"
#include <stdlib.h>
#include <string.h>
#include <math.h>
// The the sole (fake) video mode of our (sole) fake monitor
//
static GLFWvidmode getVideoMode(void)
{
GLFWvidmode mode;
mode.width = 1920;
mode.height = 1080;
mode.redBits = 8;
mode.greenBits = 8;
mode.blueBits = 8;
mode.refreshRate = 60;
return mode;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
void _glfwPollMonitorsNull(void)
{
const float dpi = 141.f;
const GLFWvidmode mode = getVideoMode();
_GLFWmonitor* monitor = _glfwAllocMonitor("Null SuperNoop 0",
(int) (mode.width * 25.4f / dpi),
(int) (mode.height * 25.4f / dpi));
_glfwInputMonitor(monitor, GLFW_CONNECTED, _GLFW_INSERT_FIRST);
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
@@ -36,6 +67,7 @@
void _glfwPlatformFreeMonitor(_GLFWmonitor* monitor)
{
_glfwFreeGammaArrays(&monitor->null.ramp);
}
void _glfwPlatformGetMonitorPos(_GLFWmonitor* monitor, int* xpos, int* ypos)
@@ -55,23 +87,69 @@ void _glfwPlatformGetMonitorWorkarea(_GLFWmonitor* monitor,
int* xpos, int* ypos,
int* width, int* height)
{
const GLFWvidmode mode = getVideoMode();
if (xpos)
*xpos = 10;
if (ypos)
ypos = 0;
if (width)
*width = mode.width;
if (height)
*height = mode.height - 10;
}
GLFWvidmode* _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, int* found)
{
return NULL;
GLFWvidmode* mode = calloc(1, sizeof(GLFWvidmode));
*mode = getVideoMode();
*found = 1;
return mode;
}
void _glfwPlatformGetVideoMode(_GLFWmonitor* monitor, GLFWvidmode* mode)
{
*mode = getVideoMode();
}
GLFWbool _glfwPlatformGetGammaRamp(_GLFWmonitor* monitor, GLFWgammaramp* ramp)
{
return GLFW_FALSE;
if (!monitor->null.ramp.size)
{
_glfwAllocGammaArrays(&monitor->null.ramp, 256);
for (unsigned int i = 0; i < monitor->null.ramp.size; i++)
{
const float gamma = 2.2f;
float value;
value = i / (float) (monitor->null.ramp.size - 1);
value = powf(value, 1.f / gamma) * 65535.f + 0.5f;
value = _glfw_fminf(value, 65535.f);
monitor->null.ramp.red[i] = (unsigned short) value;
monitor->null.ramp.green[i] = (unsigned short) value;
monitor->null.ramp.blue[i] = (unsigned short) value;
}
}
_glfwAllocGammaArrays(ramp, monitor->null.ramp.size);
memcpy(ramp->red, monitor->null.ramp.red, sizeof(short) * ramp->size);
memcpy(ramp->green, monitor->null.ramp.green, sizeof(short) * ramp->size);
memcpy(ramp->blue, monitor->null.ramp.blue, sizeof(short) * ramp->size);
return GLFW_TRUE;
}
void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor, const GLFWgammaramp* ramp)
{
if (monitor->null.ramp.size != ramp->size)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Null: Gamma ramp size must match current ramp size");
return;
}
memcpy(monitor->null.ramp.red, ramp->red, sizeof(short) * ramp->size);
memcpy(monitor->null.ramp.green, ramp->green, sizeof(short) * ramp->size);
memcpy(monitor->null.ramp.blue, ramp->blue, sizeof(short) * ramp->size);
}