//
// LLWindowMesaHeadless
//
LLWindowMesaHeadless::LLWindowMesaHeadless(LLWindowCallbacks* callbacks,
const std::string& title, const std::string& name, S32 x, S32 y, S32 width, S32 height,
U32 flags, BOOL fullscreen, BOOL clearBg,
BOOL disable_vsync, BOOL use_gl, BOOL ignore_pixel_depth)
: LLWindow(callbacks, fullscreen, flags)
{
if (use_gl)
{
llinfos << "MESA Init" << llendl;
mMesaContext = OSMesaCreateContextExt( GL_RGBA, 32, 0, 0, NULL );
/* Allocate the image buffer */
mMesaBuffer = new unsigned char [width * height * 4 * MESA_CHANNEL_SIZE];
llassert(mMesaBuffer);
gMesaBuffer = (U16*)mMesaBuffer;
/* Bind the buffer to the context and make it current */
if (!OSMesaMakeCurrent( mMesaContext, mMesaBuffer, MESA_CHANNEL_TYPE, width, height ))
{
llerrs << "MESA: OSMesaMakeCurrent failed!" << llendl;
}
llverify(gGLManager.initGL());
}
}
int init_context(int w, int h)
{
Width = w;
Height = h;
ctx = OSMesaCreateContextExt( OSMESA_RGBA, 16, 0, 0, NULL );
if (!ctx) {
printf("OSMesaCreateContext failed!\n");
return -1;
}
buffer = malloc( Width * Height * 4 * sizeof(GLubyte) );
if (!buffer) {
printf("Alloc image buffer failed!\n");
return -1;
}
if (!OSMesaMakeCurrent( ctx, buffer, GL_UNSIGNED_BYTE, Width, Height )) {
printf("OSMesaMakeCurrent failed!\n");
return -1;
}
{
int z, s, a;
glGetIntegerv(GL_DEPTH_BITS, &z);
glGetIntegerv(GL_STENCIL_BITS, &s);
glGetIntegerv(GL_ACCUM_RED_BITS, &a);
printf("Depth=%d Stencil=%d Accum=%d\n", z, s, a);
}
return 0;
}
/*
* Create an Off-Screen Mesa rendering context. The only attribute needed is
* an RGBA vs Color-Index mode flag.
*
* Input: format - either GL_RGBA or GL_COLOR_INDEX
* sharelist - specifies another OSMesaContext with which to share
* display lists. NULL indicates no sharing.
* Return: an OSMesaContext or 0 if error
*/
GLAPI OSMesaContext GLAPIENTRY
OSMesaCreateContext( GLenum format, OSMesaContext sharelist )
{
const GLint accumBits = (format == OSMESA_COLOR_INDEX) ? 0 : 16;
return OSMesaCreateContextExt(format, DEFAULT_SOFTWARE_DEPTH_BITS,
8, accumBits, sharelist);
}
void
Renderer3dImpl::set_parameters_low_level()
{
ctx_ = OSMesaCreateContextExt(OSMESA_RGB, 16, 0, 0, NULL);
ctx_buffer_ = malloc(width_ * height_ * 3 * sizeof(GLubyte));
OSMesaMakeCurrent(ctx_, ctx_buffer_, GL_UNSIGNED_BYTE, width_, height_);
}
OSMesaContext init_osmesa(int width, int height, void *buffer) {
OSMesaContext ctx = OSMesaCreateContextExt(OSMESA_RGBA, 16, 0, 0, NULL);
if (!ctx) {
fprintf(stderr, "ERROR: OSMesaCreateContext failed");
} else if (!OSMesaMakeCurrent(ctx, buffer, GL_UNSIGNED_BYTE, width, height)) {
fprintf(stderr, "ERROR: OSMesaMakeCurrent failed");
OSMesaDestroyContext(ctx);
ctx = NULL;
}
return ctx;
}
SkMesaGLContext::SkMesaGLContext()
: fContext(static_cast<Context>(NULL))
, fImage(NULL) {
GR_STATIC_ASSERT(sizeof(Context) == sizeof(OSMesaContext));
/* Create an RGBA-mode context */
#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
/* specify Z, stencil, accum sizes */
fContext = (Context)OSMesaCreateContextExt(OSMESA_BGRA, 0, 0, 0, NULL);
#else
fContext = (Context)OSMesaCreateContext(OSMESA_BGRA, NULL);
#endif
if (!fContext) {
SkDebugf("OSMesaCreateContext failed!\n");
this->destroyGLContext();
return;
}
// Allocate the image buffer
fImage = (GrGLubyte *) sk_malloc_throw(gBOGUS_SIZE * gBOGUS_SIZE *
4 * sizeof(GrGLubyte));
if (!fImage) {
SkDebugf("Alloc image buffer failed!\n");
this->destroyGLContext();
return;
}
// Bind the buffer to the context and make it current
if (!OSMesaMakeCurrent((OSMesaContext)fContext,
fImage,
GR_GL_UNSIGNED_BYTE,
gBOGUS_SIZE,
gBOGUS_SIZE)) {
SkDebugf("OSMesaMakeCurrent failed!\n");
this->destroyGLContext();
return;
}
SkAutoTUnref<const GrGLInterface> gl(GrGLCreateMesaInterface());
if (NULL == gl.get()) {
SkDebugf("Could not create GL interface!\n");
this->destroyGLContext();
return;
}
if (!gl->validate()) {
SkDebugf("Could not validate GL interface!\n");
this->destroyGLContext();
return;
}
this->init(gl.detach());
}
static void *osmesa_ctx_init(video_frame_info_t *video_info, void *video_driver)
{
#ifdef HAVE_OSMESA_CREATE_CONTEXT_ATTRIBS
const int attribs[] = {
OSMESA_FORMAT, g_osmesa_format,
OSMESA_DEPTH_BITS, 0,
OSMESA_STENCIL_BITS, 0,
OSMESA_ACCUM_BITS, 0,
OSMESA_PROFILE, g_osmesa_profile,
OSMESA_CONTEXT_MAJOR_VERSION, g_osmesa_major,
OSMESA_CONTEXT_MINOR_VERSION, g_osmesa_minor,
0, 0
};
#endif
gfx_ctx_osmesa_data_t *osmesa = (gfx_ctx_osmesa_data_t*)
calloc(1, sizeof(gfx_ctx_osmesa_data_t));
if (!osmesa)
goto error;
#ifdef HAVE_OSMESA_CREATE_CONTEXT_ATTRIBS
osmesa->ctx = OSMesaCreateContextAttribs(attribs, NULL);
#endif
#ifdef HAVE_OSMESA_CREATE_CONTEXT_EXT
if (!osmesa->ctx)
osmesa->ctx = OSMesaCreateContextExt(g_osmesa_format, 0, 0, 0, NULL);
#endif
if (!osmesa->ctx)
{
#if defined(HAVE_OSMESA_CREATE_CONTEXT_ATTRIBS) || defined(HAVE_OSMESA_CREATE_CONTEXT_EXT)
RARCH_WARN("[osmesa]: Falling back to standard context creation.\n");
#endif
osmesa->ctx = OSMesaCreateContext(g_osmesa_format, NULL);
}
if (!osmesa->ctx)
goto error;
osmesa->pixsize = g_osmesa_bpp;
return osmesa;
error:
if (osmesa)
free(osmesa);
RARCH_WARN("[omesa]: Failed to initialize the context driver.\n");
return NULL;
}
OSGLContext_osmesa::OSGLContext_osmesa(const FramebufferConfig& pixelFormatAttrs,
int /*major*/,
int /*minor*/,
bool /*coreProfile*/,
const GLRendererID& rendererID,
const OSGLContext_osmesa* shareContex)
: _imp(new OSGLContext_osmesaPrivate())
{
GLenum format = GL_RGBA;
int depthBits = pixelFormatAttrs.depthBits;
int stencilBits = pixelFormatAttrs.stencilBits;
int accumBits = pixelFormatAttrs.accumRedBits + pixelFormatAttrs.accumGreenBits + pixelFormatAttrs.accumBlueBits + pixelFormatAttrs.accumAlphaBits;
/* Create an RGBA-mode context */
#if defined(OSMESA_GALLIUM_DRIVER) && (OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 1102)
/* specify Z, stencil, accum sizes */
{
int cpuDriver = rendererID.renderID;
int attribs[100], n = 0;
attribs[n++] = OSMESA_FORMAT;
attribs[n++] = format;
attribs[n++] = OSMESA_DEPTH_BITS;
attribs[n++] = depthBits;
attribs[n++] = OSMESA_STENCIL_BITS;
attribs[n++] = stencilBits;
attribs[n++] = OSMESA_ACCUM_BITS;
attribs[n++] = accumBits;
attribs[n++] = OSMESA_GALLIUM_DRIVER;
attribs[n++] = (int)cpuDriver;
attribs[n++] = 0;
_imp->ctx = OSMesaCreateContextAttribs( attribs, shareContex ? shareContex->_imp->ctx : 0);
}
#else
Q_UNUSED(rendererID);
#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
/* specify Z, stencil, accum sizes */
_imp->ctx = OSMesaCreateContextExt( format, depthBits, stencilBits, accumBits, shareContex ? shareContex->_imp->ctx : 0);
#else
_imp->ctx = OSMesaCreateContext( format, shareContex ? shareContex->_imp->ctx : 0);
#endif
#endif
if (!_imp->ctx) {
throw std::runtime_error("OSMesaCreateContext failed");
}
}
DMesaContext
DMesaCreateContext (DMesaVisual visual, DMesaContext share)
{
DMesaContext dmesa;
if ((dmesa = (DMesaContext)CALLOC_STRUCT(dmesa_context)) != NULL) {
dmesa->osmesa = OSMesaCreateContextExt(
visual->format,
visual->depthBits,
visual->stencilBits,
visual->accumBits,
(share != NULL) ? share->osmesa : NULL);
if (dmesa->osmesa == NULL) {
FREE(dmesa);
dmesa = NULL;
}
}
return dmesa;
}
const GrGLInterface* SkMesaGLContext::createGLContext() {
/* Create an RGBA-mode context */
#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
/* specify Z, stencil, accum sizes */
fContext = (Context)OSMesaCreateContextExt(OSMESA_BGRA, 0, 0, 0, NULL);
#else
fContext = (Context)OSMesaCreateContext(OSMESA_BGRA, NULL);
#endif
if (!fContext) {
SkDebugf("OSMesaCreateContext failed!\n");
this->destroyGLContext();
return NULL;
}
// Allocate the image buffer
fImage = (GrGLubyte *) sk_malloc_throw(gBOGUS_SIZE * gBOGUS_SIZE *
4 * sizeof(GrGLubyte));
if (!fImage) {
SkDebugf("Alloc image buffer failed!\n");
this->destroyGLContext();
return NULL;
}
// Bind the buffer to the context and make it current
if (!OSMesaMakeCurrent((OSMesaContext)fContext,
fImage,
GR_GL_UNSIGNED_BYTE,
gBOGUS_SIZE,
gBOGUS_SIZE)) {
SkDebugf("OSMesaMakeCurrent failed!\n");
this->destroyGLContext();
return NULL;
}
const GrGLInterface* interface = GrGLCreateMesaInterface();
if (!interface) {
SkDebugf("Could not create GL interface!\n");
this->destroyGLContext();
return NULL;
}
return interface;
}
static sk_sp<GrContext> create_grcontext() {
// We just leak the OSMesaContext... the process will die soon anyway.
if (OSMesaContext osMesaContext = OSMesaCreateContextExt(OSMESA_BGRA, 0, 0, 0, nullptr)) {
static uint32_t buffer[16 * 16];
OSMesaMakeCurrent(osMesaContext, &buffer, GL_UNSIGNED_BYTE, 16, 16);
}
auto osmesa_get = [](void* ctx, const char name[]) {
SkASSERT(nullptr == ctx);
SkASSERT(OSMesaGetCurrentContext());
return OSMesaGetProcAddress(name);
};
sk_sp<const GrGLInterface> mesa(GrGLAssembleInterface(nullptr, osmesa_get));
if (!mesa) {
return nullptr;
}
return sk_sp<GrContext>(GrContext::Create(
kOpenGL_GrBackend,
reinterpret_cast<intptr_t>(mesa.get())));
}
CAMLprim value
ml_osmesacreatecontextext( value _format,
value depthBits,
value stencilBits,
value accumBits,
value ml_sharelist )
{
OSMesaContext ctx;
OSMesaContext sharelist;
GLenum format;
if (Is_long(ml_sharelist))
sharelist = NULL;
else
sharelist = (OSMesaContext) Field(ml_sharelist,0);
switch (Int_val(_format)) {
case 0: format = OSMESA_COLOR_INDEX; break;
case 1: format = OSMESA_RGBA; break;
case 2: format = OSMESA_BGRA; break;
case 3: format = OSMESA_ARGB; break;
case 4: format = OSMESA_RGB; break;
case 5: format = OSMESA_BGR; break;
}
#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
ctx = OSMesaCreateContextExt( format,
Int_val(depthBits),
Int_val(stencilBits),
Int_val(accumBits),
sharelist );
#else
caml_failwith("function OSMesaCreateContextExt not available");
#endif
if (!ctx) {
caml_failwith("osMesaCreateContextExt");
}
return (value) ctx;
}
/**
* Create an Off-Screen Mesa rendering context. The only attribute needed is
* an RGBA vs Color-Index mode flag.
*
* Input: format - Must be GL_RGBA
* sharelist - specifies another OSMesaContext with which to share
* display lists. NULL indicates no sharing.
* Return: an OSMesaContext or 0 if error
*/
GLAPI OSMesaContext GLAPIENTRY
OSMesaCreateContext( GLenum format, OSMesaContext sharelist )
{
return OSMesaCreateContextExt(format, DEFAULT_SOFTWARE_DEPTH_BITS,
8, 0, sharelist);
}
float* renderDepth(Mesh3D* model, float* projection, int render_width, int render_height){
unsigned char * pbufferRGB = new unsigned char [3 * render_width * render_height];
float m_near = 0.1; // 0.3;
float m_far = 1e8;
//float m_far = 10; //1e8;
//int m_level = 0;
// Step 1: setup off-screen mesa's binding
OSMesaContext ctx = OSMesaCreateContextExt(OSMESA_RGB, 32, 0, 0, NULL );
// Bind the buffer to the context and make it current
if (!OSMesaMakeCurrent(ctx, (void*)pbufferRGB, GL_UNSIGNED_BYTE, render_width, render_height)) {
std::cerr << "OSMesaMakeCurrent failed!: " << render_width << ' ' << render_height << std::endl;
return NULL;
}
OSMesaPixelStore(OSMESA_Y_UP, 1);
/*
GLint vup;
OSMesaGetIntegerv(OSMESA_Y_UP, &vup);
std::cout<<"OSMESA_Y_UP="<<vup<<std::endl;
*/
// Step 2: Setup basic OpenGL setting
glEnable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glDisable(GL_CULL_FACE);
//glEnable(GL_CULL_FACE);
//glCullFace(GL_BACK);
glPolygonMode(GL_FRONT, GL_FILL);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//glClearColor(m_clearColor[0], m_clearColor[1], m_clearColor[2], 1.0f); // this line seems useless
glViewport(0, 0, render_width, render_height);
// Step 3: Set projection matrices
//double scale = (0x0001) << m_level;
double final_matrix[16];
// new way: faster way by reuse computation and symbolic derive. See sym_derive.m to check the math.
//double inv_width_scale = 1.0/(m_width*scale);
// double inv_height_scale = 1.0/(m_height*scale);
//double inv_width_scale_1 =inv_width_scale - 1.0;
//double inv_height_scale_1_s = -(inv_height_scale - 1.0);
//double inv_width_scale_2 = inv_width_scale*2.0;
//double inv_height_scale_2_s = -inv_height_scale*2.0;
double cx_rgb = render_width/2;
double cy_rgb = render_height/2;
double inv_width_scale_1 = 1.0 - 4 * cx_rgb / render_width;
double inv_height_scale_1_s = -1.0 + 4 * cy_rgb / render_height;
double inv_width_scale_2 = 2.0 / render_width;
double inv_height_scale_2_s = -2.0 / render_height;
double m_far_a_m_near = m_far + m_near;
double m_far_s_m_near = m_far - m_near;
double m_far_d_m_near = m_far_a_m_near/m_far_s_m_near;
final_matrix[ 0]= projection[2+0*3]*inv_width_scale_1 + projection[0+0*3]*inv_width_scale_2;
final_matrix[ 1]= projection[2+0*3]*inv_height_scale_1_s + projection[1+0*3]*inv_height_scale_2_s;
final_matrix[ 2]= projection[2+0*3]*m_far_d_m_near;
final_matrix[ 3]= projection[2+0*3];
final_matrix[ 4]= projection[2+1*3]*inv_width_scale_1 + projection[0+1*3]*inv_width_scale_2;
final_matrix[ 5]= projection[2+1*3]*inv_height_scale_1_s + projection[1+1*3]*inv_height_scale_2_s;
final_matrix[ 6]= projection[2+1*3]*m_far_d_m_near;
final_matrix[ 7]= projection[2+1*3];
final_matrix[ 8]= projection[2+2*3]*inv_width_scale_1 + projection[0+2*3]*inv_width_scale_2;
final_matrix[ 9]= projection[2+2*3]*inv_height_scale_1_s + projection[1+2*3]*inv_height_scale_2_s;
final_matrix[10]= projection[2+2*3]*m_far_d_m_near;
final_matrix[11]= projection[2+2*3];
final_matrix[12]= projection[2+3*3]*inv_width_scale_1 + projection[0+3*3]*inv_width_scale_2;
final_matrix[13]= projection[2+3*3]*inv_height_scale_1_s + projection[1+3*3]*inv_height_scale_2_s;
final_matrix[14]= projection[2+3*3]*m_far_d_m_near - (2*m_far*m_near)/m_far_s_m_near;
final_matrix[15]= projection[2+3*3];
/*
// new way: faster way by reuse computation and symbolic derive. See sym_derive.m to check the math.
double inv_width_scale = 1.0/(render_width*scale);
double inv_height_scale = 1.0/(render_height*scale);
double inv_width_scale_1 =inv_width_scale - 1.0;
double inv_height_scale_1_s = -(inv_height_scale - 1.0);
double inv_width_scale_2 = inv_width_scale*2.0;
double inv_height_scale_2_s = -inv_height_scale*2.0;
double m_far_a_m_near = m_far + m_near;
double m_far_s_m_near = m_far - m_near;
double m_far_d_m_near = m_far_a_m_near/m_far_s_m_near;
final_matrix[ 0]= projection[2+0*3]*inv_width_scale_1 + projection[0+0*3]*inv_width_scale_2;
final_matrix[ 1]= projection[2+0*3]*inv_height_scale_1_s + projection[1+0*3]*inv_height_scale_2_s;
final_matrix[ 2]= projection[2+0*3]*m_far_d_m_near;
final_matrix[ 3]= projection[2+0*3];
final_matrix[ 4]= projection[2+1*3]*inv_width_scale_1 + projection[0+1*3]*inv_width_scale_2;
final_matrix[ 5]= projection[2+1*3]*inv_height_scale_1_s + projection[1+1*3]*inv_height_scale_2_s;
final_matrix[ 6]= projection[2+1*3]*m_far_d_m_near;
final_matrix[ 7]= projection[2+1*3];
final_matrix[ 8]= projection[2+2*3]*inv_width_scale_1 + projection[0+2*3]*inv_width_scale_2;
final_matrix[ 9]= projection[2+2*3]*inv_height_scale_1_s + projection[1+2*3]*inv_height_scale_2_s;
final_matrix[10]= projection[2+2*3]*m_far_d_m_near;
final_matrix[11]= projection[2+2*3];
final_matrix[12]= projection[2+3*3]*inv_width_scale_1 + projection[0+3*3]*inv_width_scale_2;
final_matrix[13]= projection[2+3*3]*inv_height_scale_1_s + projection[1+3*3]*inv_height_scale_2_s;
final_matrix[14]= projection[2+3*3]*m_far_d_m_near - (2*m_far*m_near)/m_far_s_m_near;
final_matrix[15]= projection[2+3*3];
*/
// matrix is ready. use it
glMatrixMode(GL_PROJECTION);
glLoadMatrixd(final_matrix);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// Step 3: render the mesh
for (unsigned int i = 0; i < model->face.size() ; ++i) {
glBegin(GL_POLYGON);
for (unsigned int j=0; j < model->face[i].size(); ++j){
int vi = model->face[i][j];
glVertex3f(model->vertex[vi].x, model->vertex[vi].y, model->vertex[vi].z);
}
glEnd();
}
glFinish(); // done rendering
////////////////////////////////////////////////////////////////////////////////
unsigned int* pDepthBuffer;
GLint outWidth, outHeight, bitPerDepth;
OSMesaGetDepthBuffer(ctx, &outWidth, &outHeight, &bitPerDepth, (void**)&pDepthBuffer);
float* pbufferD = new float[outWidth*outHeight];
for(int i=0; i<outWidth*outHeight; i++){
pbufferD[i] = float( m_near / (1.0 - double(pDepthBuffer[i])/(4294967296.0)) );
//double d = double(pDepthBuffer[i])/4294967296.0;
//pbufferD[i] = float( 1.0 / ( ( m_far / (m_far - m_near) ) - d * ( - (m_near * m_far) / (m_far - m_near) ) ) );
}
OSMesaDestroyContext(ctx);
delete [] pbufferRGB;
return pbufferD;
}
GLFWbool _glfwCreateContextOSMesa(_GLFWwindow* window,
const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig)
{
OSMesaContext share = NULL;
const int accumBits = fbconfig->accumRedBits +
fbconfig->accumGreenBits +
fbconfig->accumBlueBits +
fbconfig->accumAlphaBits;
if (ctxconfig->client == GLFW_OPENGL_ES_API)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"OSMesa: OpenGL ES is not available on OSMesa");
return GLFW_FALSE;
}
if (ctxconfig->share)
share = ctxconfig->share->context.osmesa.handle;
if (OSMesaCreateContextAttribs)
{
int index = 0, attribs[40];
setAttrib(OSMESA_FORMAT, OSMESA_RGBA);
setAttrib(OSMESA_DEPTH_BITS, fbconfig->depthBits);
setAttrib(OSMESA_STENCIL_BITS, fbconfig->stencilBits);
setAttrib(OSMESA_ACCUM_BITS, accumBits);
if (ctxconfig->profile == GLFW_OPENGL_CORE_PROFILE)
{
setAttrib(OSMESA_PROFILE, OSMESA_CORE_PROFILE);
}
else if (ctxconfig->profile == GLFW_OPENGL_COMPAT_PROFILE)
{
setAttrib(OSMESA_PROFILE, OSMESA_COMPAT_PROFILE);
}
if (ctxconfig->major != 1 || ctxconfig->minor != 0)
{
setAttrib(OSMESA_CONTEXT_MAJOR_VERSION, ctxconfig->major);
setAttrib(OSMESA_CONTEXT_MINOR_VERSION, ctxconfig->minor);
}
if (ctxconfig->forward)
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"OSMesa: Foward-compatible contexts not supported");
return GLFW_FALSE;
}
setAttrib(0, 0);
window->context.osmesa.handle =
OSMesaCreateContextAttribs(attribs, share);
}
else
{
if (ctxconfig->profile)
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"OSMesa: OpenGL profiles unavailable");
return GLFW_FALSE;
}
window->context.osmesa.handle =
OSMesaCreateContextExt(OSMESA_RGBA,
fbconfig->depthBits,
fbconfig->stencilBits,
accumBits,
share);
}
if (window->context.osmesa.handle == NULL)
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"OSMesa: Failed to create context");
return GLFW_FALSE;
}
window->context.makeCurrent = makeContextCurrentOSMesa;
window->context.swapBuffers = swapBuffersOSMesa;
window->context.swapInterval = swapIntervalOSMesa;
window->context.extensionSupported = extensionSupportedOSMesa;
window->context.getProcAddress = getProcAddressOSMesa;
window->context.destroy = destroyContextOSMesa;
return GLFW_TRUE;
}
int main(int argc, char *argv[])
{
int Width = 384;
int Height = 384;
OSMesaContext ctx;
void *buffer;
char *filename = NULL;
int ev;
int repeat=1;
/* Create an RGBA-mode context */
/* specify Z, stencil, accum sizes */
ctx = OSMesaCreateContextExt( OSMESA_BGRA, 16, 0, 0, NULL );
if (!ctx) {
printf("OSMesaCreateContext failed!\n");
return 0;
}
/* Allocate the image buffer */
buffer = malloc( Width * Height * 4 * sizeof(GLubyte) );
if (!buffer) {
printf("Alloc image buffer failed!\n");
return 0;
}
/* Bind the buffer to the context and make it current */
if (!OSMesaMakeCurrent( ctx, buffer, GL_UNSIGNED_BYTE, Width, Height )) {
printf("OSMesaMakeCurrent failed!\n");
return 0;
}
{
int z, s, a;
glGetIntegerv(GL_DEPTH_BITS, &z);
glGetIntegerv(GL_STENCIL_BITS, &s);
glGetIntegerv(GL_ACCUM_RED_BITS, &a);
printf("Depth=%d Stencil=%d Accum=%d\n", z, s, a);
}
reshape(Width, Height);
glClearColor( 0, 0, 0, 1);
init();
draw();
DrawWindow(10, 10, Width+TYPE_3_BORDER_WIDTH*2, Height+TYPE_3_BORDER_WIDTH+get_skin_height(),
"OpenGL Engine Demo", 0x000000, 0x74);
Blit(buffer, TYPE_3_BORDER_WIDTH, get_skin_height(), 0, 0, Width, Height, Width,Height,Width*4);
int start = time_now();
int frames = 0;
while(repeat)
{
int now = time_now();
oskey_t key;
ev = check_os_event();
switch(ev)
{
case 1:
DrawWindow(0,0,0,0, NULL, 0x000000,0x74);
break;
case 2:
key = get_key();
keyboard(key.code);
break;
case 3:
if(get_os_button()==1)
repeat=0;
continue;
};
if (now - start >= 5000)
{
double elapsed = (double) (now - start) / 1000.0;
printf("%d frames in %3.1f seconds = %6.3f FPS\n",
frames, elapsed, frames / elapsed);
fflush(stdout);
start = now;
frames = 0;
}
idle();
draw();
glFlush();
Blit(buffer, TYPE_3_BORDER_WIDTH, get_skin_height(), 0, 0, Width, Height, Width,Height,Width*4);
frames++;
};
/* free the image buffer */
free( buffer );
/* destroy the context */
OSMesaDestroyContext( ctx );
return 0;
}
/**
* Create an Off-Screen Mesa rendering context. The only attribute needed is
* an RGBA vs Color-Index mode flag.
*
* Input: format - Must be GL_RGBA
* sharelist - specifies another OSMesaContext with which to share
* display lists. NULL indicates no sharing.
* Return: an OSMesaContext or 0 if error
*/
GLAPI OSMesaContext GLAPIENTRY
OSMesaCreateContext(GLenum format, OSMesaContext sharelist)
{
return OSMesaCreateContextExt(format, 24, 8, 0, sharelist);
}
int
main(int argc, char *argv[])
{
OSMesaContext ctx;
void *buffer;
if (argc < 3) {
fprintf(stderr, "Usage:\n");
fprintf(stderr, " render modelname pngname [width height] [camx camy camz] [centerx centerz centerz] [upx upy upz] [fovy]\n");
fprintf(stderr, "Default: width=%d height=%d cam=[%0.4f %0.4f %0.4f] center=[%0.4f %0.4f %0.4f] up=[%0.4f %0.4f %0.4f] fovy=%0.4f\n", Width, Height, camx, camy, camz, centerx, centery, centerz, upx, upy, upz, fovy);
return 0;
}
modelname = argv[1];
pngname = argv[2];
if (argc >= 5) {
Width = atoi(argv[3]);
Height = atoi(argv[4]);
}
if (argc >= 8) {
camx = atoi(argv[5]);
camy = atoi(argv[6]);
camz = atoi(argv[7]);
}
if (argc >= 11) {
centerx = atoi(argv[8]);
centery = atoi(argv[9]);
centerz = atoi(argv[10]);
}
if (argc >= 14) {
upx = atoi(argv[11]);
upy = atoi(argv[12]);
upz = atoi(argv[13]);
}
if (argc >= 15) {
fovy = atoi(argv[14]);
}
if (!Import3DFromFile(modelname)) {
fprintf(stderr, "model cannot be loaded!\n");
return 0;
}
/* Create an RGBA-mode context */
#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
/* specify Z, stencil, accum sizes */
ctx = OSMesaCreateContextExt( OSMESA_RGBA, 16, 0, 0, NULL );
#else
ctx = OSMesaCreateContext( OSMESA_RGBA, NULL );
#endif
if (!ctx) {
printf("OSMesaCreateContext failed!\n");
return 0;
}
/* Allocate the image buffer */
buffer = malloc( Width * Height * 4 * sizeof(GLubyte) );
if (!buffer) {
printf("Alloc image buffer failed!\n");
return 0;
}
/* Bind the buffer to the context and make it current */
if (!OSMesaMakeCurrent( ctx, buffer, GL_UNSIGNED_BYTE, Width, Height )) {
printf("OSMesaMakeCurrent failed!\n");
return 0;
}
{
int z, s, a;
glGetIntegerv(GL_DEPTH_BITS, &z);
glGetIntegerv(GL_STENCIL_BITS, &s);
glGetIntegerv(GL_ACCUM_RED_BITS, &a);
printf("Depth=%d Stencil=%d Accum=%d\n", z, s, a);
}
InitGL(Width, Height);
render_image();
if (pngname != NULL) {
png::image< png::rgba_pixel > image(Width, Height);
GLubyte * p_buffer = (GLubyte*)buffer;
for (png::uint_32 y = 0; y < Height; ++y)
{
for (png::uint_32 x = 0; x < Width; ++x)
{
png::uint_32 r, g, b, a;
r = *(p_buffer++);
g = *(p_buffer++);
b = *(p_buffer++);
a = *(p_buffer++);
image[Height-1-y][x] = png::rgba_pixel(r, g, b, a);
}
}
image.write(pngname);
}
else {
printf("Specify a filename if you want to make an image file\n");
}
printf("all done\n");
/* free the image buffer */
free( buffer );
// *** cleanup ***
textureIdMap.clear(); //no need to delete pointers in it manually here. (Pointers point to textureIds deleted in next step)
textureName.clear(); //no need to delete pointers in it manually here. (Pointers point to textureIds deleted in next step)
if (textureIds)
{
delete[] textureIds;
textureIds = NULL;
}
/* destroy the context */
OSMesaDestroyContext( ctx );
return 0;
}
int main(int argc, char* argv[]) {
if (argc < 3) {
printf("Usage: ./zbuffer input.ply [output.pcd,outputFolder]\n");
return 1;
}
std::vector<Point> vertices;
std::vector<Triangle> faces;
std::vector<Point> pointcloud;
char buffer[128];
bool merge = opendir(argv[2]) == NULL;
readPLY(argv[1],&vertices,&faces);
//get bounding box
double minX=vertices[0].x,maxX=vertices[0].x;
double minY=vertices[0].y,maxY=vertices[0].y;
double minZ=vertices[0].z,maxZ=vertices[0].z;
for (size_t i=1; i<vertices.size(); i++) {
if (vertices[i].x < minX) minX = vertices[i].x;
else if (vertices[i].x > maxX) maxX = vertices[i].x;
if (vertices[i].y < minY) minY = vertices[i].y;
else if (vertices[i].y > maxY) maxY = vertices[i].y;
if (vertices[i].z < minZ) minZ = vertices[i].z;
else if (vertices[i].z > maxZ) maxZ = vertices[i].z;
}
printf("Bounding box: x:(%.2f %.2f) y:(%.2f %.2f) z:(%.2f %.2f)\n",minX,maxX,minY,maxY,minZ,maxZ);
Point centroid = {
(minX + maxX) / 2,
(minY + maxY) / 2,
(minZ + maxZ) / 2
};
for (size_t i = 0; i < vertices.size(); i++) {
vertices[i].x -= centroid.x;
vertices[i].y -= centroid.y;
vertices[i].z -= centroid.z;
}
int width = RESOLUTION;
int height = RESOLUTION;
OSMesaContext ctx;
ctx = OSMesaCreateContextExt(OSMESA_RGB, 32, 0, 0, NULL );
unsigned char * pbuffer = new unsigned char [3 * width * height];
// Bind the buffer to the context and make it current
if (!OSMesaMakeCurrent(ctx, (void*)pbuffer, GL_UNSIGNED_BYTE, width, height))
printf("fail to create MESA context\n");
OSMesaPixelStore(OSMESA_Y_UP, 0);
glEnable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glDisable(GL_CULL_FACE);
glPolygonMode(GL_FRONT, GL_FILL);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
float fov = 70;
float fov_scale = 2 * tan(fov / 2 / 180 * M_PI);
float zfar = 100000;
gluPerspective(fov,1,1,zfar);
glViewport(0, 0, width, height);
float cameraX = maxX - minX;
float cameraY = maxY - minY;
float cameraZ = maxZ - minZ;
float cx = 0.5 * (width + 1);
float cy = 0.5 * (height + 1);
unsigned int* depth = new unsigned int[width * height];
float rho = sqrt(cameraX*cameraX + cameraY*cameraY);
float theta = atan2(cameraY, cameraX);
int depthBits=0;
glGetIntegerv(GL_DEPTH_BITS, &depthBits);
printf("depth buffer bits %d\n",depthBits);
int numViews = INCLUDE_TOP ? NUM_CAMERAS + 2 : NUM_CAMERAS;
for (int k = 0; k < numViews; k++) {
// if (!merge)
// pointcloud.clear();
float rx = rho * cos(theta);
float ry = rho * sin(theta);
theta += 2 * 3.14159265 / NUM_CAMERAS;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
if (k < NUM_CAMERAS)
gluLookAt(rx,ry, cameraZ, 0,0,0, 0,0,1);
else if (k == NUM_CAMERAS)
gluLookAt(0,0, cameraZ*4, 0,0,0, 1,0,0);
else if (k == NUM_CAMERAS + 1)
gluLookAt(0,0, -cameraZ*4, 0,0,0, 1,0,0);
GLfloat R[16] = {};
glGetFloatv(GL_MODELVIEW_MATRIX, R);
// printf("%f %f %f %f\n%f %f %f %f\n%f %f %f %f\n%f %f %f %f\n",R[0],R[1],R[2],R[3],R[4],R[5],R[6],R[7],R[8],R[9],R[10],R[11],R[12],R[13],R[14],R[15]);
// printf("camera: %f %f %f\n",rx,ry,cameraZ);
glBegin(GL_TRIANGLES);
glColor3ub(150, 150, 150);
for (size_t i = 0; i < faces.size(); i++) {
Point p1 = vertices[faces[i].id1];
Point p2 = vertices[faces[i].id2];
Point p3 = vertices[faces[i].id3];
glVertex3f(p1.x, p1.y, p1.z);
glVertex3f(p2.x, p2.y, p2.z);
glVertex3f(p3.x, p3.y, p3.z);
}
glEnd();
glFinish(); // done rendering
GLint outWidth, outHeight, bitPerDepth;
GLboolean ret = OSMesaGetDepthBuffer(ctx, &outWidth, &outHeight, &bitPerDepth, (void**)&depth);
for (int i = 0; i < width; i++) {
for (int j = 0; j < height; j++) {
float buffer_z = (float) depth[j * width + i] / 0xFFFFFFFF;
if (buffer_z > 0 && buffer_z < 1) {
// float z = -1 / (1 - buffer_z);
float z = 1 / (buffer_z - 1 - buffer_z / zfar);
float x = (i - cx) * -z / width * fov_scale;
float y = (j - cy) * -z / height * fov_scale;
x -= R[12];
y -= R[13];
z -= R[14];
Point p = {
R[0] * x + R[1] * y + R[2] * z,
R[4] * x + R[5] * y + R[6] * z,
R[8] * x + R[9] * y + R[10] * z
};
pointcloud.push_back(p);
}
}
}
// printf("pointcloud: %lu\n",pointcloud.size());
if (!merge && pointcloud.size() > 0) {
int n=0;
while (true) {
sprintf(buffer,"%s/%d-cloud.pcd",argv[2],n);
FILE* f = fopen(buffer,"r");
if (!f) {
writeToPCD(buffer,&pointcloud);
break;
}
fclose(f);
n++;
}
}
}
if (merge && pointcloud.size() > 0) {
sprintf(buffer,"%s",argv[2]);
writeToPCD(buffer,&pointcloud);
}
// sprintf(buffer,"%s/vertex.pcd",argv[2]);
// writeToPCD(buffer,&vertices);
OSMesaDestroyContext(ctx);
return 0;
}
static int
setup(int width, int height)
{
#if USE_OSMESA
const size_t size = width * height * 4;
pbuffer = malloc(size);
memset(pbuffer, 0x21, size);
context = OSMesaCreateContextExt(GL_RGBA, 24, 0, 0, 0);
OSMesaMakeCurrent(context, (void *)pbuffer, GL_UNSIGNED_BYTE, width, height);
return 0;
#elif USE_CGL
/* OpenGL PBuffer initialization: OSX specific */
CGLPixelFormatAttribute pfattr[] = {
kCGLPFAPBuffer,
(CGLPixelFormatAttribute)0
};
CGLPixelFormatObj pixformat;
GLint npixels;
int e;
e = CGLChoosePixelFormat(pfattr, &pixformat, &npixels);
if (e != kCGLNoError) {
fprintf(stderr, "CGLChoosePixelFormat failed, err %d\n", e);
return e;
}
e = CGLCreateContext(pixformat, 0, &context);
if (e != kCGLNoError) {
fprintf(stderr, "CGLChoosePixelFormat failed, err %d\n", e);
return e;
}
e = CGLDestroyPixelFormat(pixformat);
if (e != kCGLNoError) {
fprintf(stderr, "CGLDestroyPixelFormat failed, err %d\n", e);
return e;
}
e = CGLSetCurrentContext(context);
if (e != kCGLNoError) {
fprintf(stderr, "CGLSetCurrentContext failed, err %d\n", e);
return e;
}
e = CGLCreatePBuffer(width, height, GL_TEXTURE_2D, GL_RGB, 0, &pbuffer);
if (e != kCGLNoError) {
fprintf(stderr, "CGLCreatePBuffer failed, err %d\n", e);
return e;
}
e = CGLSetPBuffer(context, pbuffer, 0, 0, 0);
if (e != kCGLNoError) {
fprintf(stderr, "CGLSetPBuffer failed, err %d\n", e);
return e;
}
return (int)kCGLNoError;
#elif USE_GLX
int result = (-1);
char *glxversion;
int screen;
GLXFBConfig *fbConfigs = NULL;
GLXFBConfig chosenFBConfig;
GLXFBConfig fbconfig = 0;
GLXPbuffer pbuffer = None;
int nConfigs;
int fbconfigid;
int fbAttribs[] = {
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DEPTH_SIZE, 1,
GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT | GLX_PBUFFER_BIT,
None
};
int pbAttribs[] = {
GLX_PBUFFER_WIDTH, 0,
GLX_PBUFFER_HEIGHT, 0,
GLX_LARGEST_PBUFFER, False,
GLX_PRESERVED_CONTENTS, False,
None
};
/* Open the X display */
display = XOpenDisplay(NULL);
if (!display) {
fprintf(stderr, "Error: couldn't open default X display.\n");
goto end;
}
/* Get default screen */
screen = DefaultScreen(display);
glxversion = (char *) glXGetClientString(display, GLX_VERSION);
if (!(strstr(glxversion, "1.3") || strstr(glxversion, "1.4"))) {
goto end;
}
glxversion = (char *) glXQueryServerString(display, screen, GLX_VERSION);
if (!(strstr(glxversion, "1.3") || strstr(glxversion, "1.4"))) {
goto end;
}
/* Create Pbuffer */
pbAttribs[1] = width;
pbAttribs[3] = height;
fbConfigs = glXChooseFBConfig(display, screen, fbAttribs, &nConfigs);
if (0 == nConfigs || !fbConfigs) {
fprintf(stderr, "Error: glxChooseFBConfig failed\n");
XFree(fbConfigs);
goto end;
}
chosenFBConfig = fbConfigs[0];
glXGetFBConfigAttrib(display, chosenFBConfig, GLX_FBCONFIG_ID, &fbconfigid);
/* Create the pbuffer using first fbConfig in the list that works. */
pbuffer = glXCreatePbuffer(display, chosenFBConfig, pbAttribs);
if (pbuffer) {
fbconfig = chosenFBConfig;
}
XFree(fbConfigs);
if (pbuffer == None) {
fprintf(stderr, "Error: couldn't create pbuffer\n");
goto end;
}
/* Create GLX context */
context = glXCreateNewContext(display, fbconfig, GLX_RGBA_TYPE, NULL, True);
if (!context) {
fprintf(stderr, "Error: Couldn't create GLXContext\n");
goto end;
}
/* Bind context to pbuffer */
if (!glXMakeCurrent(display, pbuffer, context)) {
fprintf(stderr, "Error: glXMakeCurrent failed\n");
goto end;
}
result = 0;
end:
if (fbConfigs)
XFree(fbConfigs);
if (display)
XCloseDisplay(display);
return result;
#else
/* TODO: pbuffer initialization */
return 0;
#endif
}
int main( int argc, char *argv[] )
{
void *buffer;
int i;
char *filename = NULL;
/* Create an RGBA-mode context */
#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
/* specify Z, stencil, accum sizes */
OSMesaContext ctx = OSMesaCreateContextExt( OSMESA_RGBA, 16, 0, 0, NULL );
#else
OSMesaContext ctx = OSMesaCreateContext( OSMESA_RGBA, NULL );
#endif
if (!ctx) {
printf("OSMesaCreateContext failed!\n");
return 0;
}
for ( i=1; i<argc; i++ ) {
if (argv[i][0] != '-') filename = argv[i];
}
/* Allocate the image buffer */
buffer = malloc( WIDTH * HEIGHT * 4 * sizeof(GLubyte) );
if (!buffer) {
printf("Alloc image buffer failed!\n");
return 0;
}
/* Bind the buffer to the context and make it current */
if (!OSMesaMakeCurrent( ctx, buffer, GL_UNSIGNED_BYTE, WIDTH, HEIGHT )) {
printf("OSMesaMakeCurrent failed!\n");
return 0;
}
{
int z, s, a;
glGetIntegerv(GL_DEPTH_BITS, &z);
glGetIntegerv(GL_STENCIL_BITS, &s);
glGetIntegerv(GL_ACCUM_RED_BITS, &a);
printf("Depth=%d Stencil=%d Accum=%d\n", z, s, a);
}
InitGL();
RenderImage();
if (filename != NULL) {
write_ppm(filename, (GLubyte*)buffer, WIDTH, HEIGHT);
}
else {
printf("Specify a filename (with ppm extension) if you want to make an image file\n");
}
printf("all done\n");
/* free the image buffer */
free( buffer );
/* destroy the context */
OSMesaDestroyContext( ctx );
return 0;
}
