void Context::draw(HDC hdc) {
HGLRC oldctx = owglGetCurrentContext();
HDC oldhdc = owglGetCurrentDC();
owglMakeCurrent(hdc, ctx);
doDraw(hdc);
owglMakeCurrent(oldhdc, oldctx);
}
Context::Context(HDC hdc) {
timeT = clock();
frameCount = 0;
texture = ~0;
ctx = owglCreateContext(hdc);
HGLRC oldctx = owglGetCurrentContext();
HDC oldhdc = owglGetCurrentDC();
owglMakeCurrent(hdc, ctx);
initContext();
owglMakeCurrent(oldhdc, oldctx);
}
static void doSwap(HDC hdc) {
HGLRC oldctx = owglGetCurrentContext();
HDC oldhdc = owglGetCurrentDC();
Context *c = contexts[hdc];
if (!c) {
ods("OpenGL: New context for device %p", hdc);
c = new Context(hdc);
contexts[hdc] = c;
} else {
ods("OpenGL: Reusing old context");
owglMakeCurrent(hdc, c->ctx);
}
c->draw(hdc);
owglMakeCurrent(oldhdc, oldctx);
}
Context::Context(HDC hdc) {
timeT = clock();
frameCount = 0;
ctx = owglCreateContext(hdc);
owglMakeCurrent(hdc, ctx);
// Here we go. From the top. Where is glResetState?
oglDisable(GL_ALPHA_TEST);
oglDisable(GL_AUTO_NORMAL);
oglEnable(GL_BLEND);
// Skip clip planes, there are thousands of them.
oglDisable(GL_COLOR_LOGIC_OP);
oglDisable(GL_COLOR_MATERIAL);
oglDisable(GL_COLOR_TABLE);
oglDisable(GL_CONVOLUTION_1D);
oglDisable(GL_CONVOLUTION_2D);
oglDisable(GL_CULL_FACE);
oglDisable(GL_DEPTH_TEST);
oglDisable(GL_DITHER);
oglDisable(GL_FOG);
oglDisable(GL_HISTOGRAM);
oglDisable(GL_INDEX_LOGIC_OP);
oglDisable(GL_LIGHTING);
// Skip line smmooth
// Skip map
oglDisable(GL_MINMAX);
// Skip polygon offset
oglDisable(GL_SEPARABLE_2D);
oglDisable(GL_SCISSOR_TEST);
oglDisable(GL_STENCIL_TEST);
oglEnable(GL_TEXTURE_2D);
oglDisable(GL_TEXTURE_GEN_Q);
oglDisable(GL_TEXTURE_GEN_R);
oglDisable(GL_TEXTURE_GEN_S);
oglDisable(GL_TEXTURE_GEN_T);
oglBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
texture = ~0;
}
