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Add GLFW_OSMESA_CONTEXT_API

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This allows the creation of OpenGL contexts via OSMesa on existing
platforms.  It does not add a compile- or link-time dependency on
OSMesa.

Fixes #281.
This commit is contained in:
Camilla Löwy
2017-02-28 19:23:25 +01:00
parent a44f2c0e65
commit e9560ef021
18 changed files with 96 additions and 39 deletions
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src/osmesa_context.c
+11 -10
View File
@@ -36,25 +36,26 @@ static void makeContextCurrentOSMesa(_GLFWwindow* window)
{
if (window)
{
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
// Check to see if we need to allocate a new buffer
if ((window->context.osmesa.buffer == NULL) ||
(window->osmesa.width != window->context.osmesa.width) ||
(window->osmesa.height != window->context.osmesa.height))
(width != window->context.osmesa.width) ||
(height != window->context.osmesa.height))
{
free(window->context.osmesa.buffer);
// Allocate the new buffer (width * height * 8-bit RGBA)
window->context.osmesa.buffer =
calloc(4, window->osmesa.width * window->osmesa.height);
window->context.osmesa.width = window->osmesa.width;
window->context.osmesa.height = window->osmesa.height;
window->context.osmesa.buffer = calloc(4, width * height);
window->context.osmesa.width = width;
window->context.osmesa.height = height;
}
if (!OSMesaMakeCurrent(window->context.osmesa.handle,
window->context.osmesa.buffer,
GL_UNSIGNED_BYTE,
window->osmesa.width, window->osmesa.height))
window->context.osmesa.buffer,
GL_UNSIGNED_BYTE,
width, height))
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"OSMesa: Failed to make context current");