C++ (Cpp) ShadowStencilFunc示例

示例#1

文件： piedraw.cpp 项目： cybersphinx/warzone2100

static void pie_DrawShadows(void)
{
    const float width = pie_GetVideoBufferWidth();
    const float height = pie_GetVideoBufferHeight();

    pie_SetTexturePage(TEXPAGE_NONE);

    glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
    glDepthFunc(GL_LESS);
    glDepthMask(GL_FALSE);
    glEnable(GL_STENCIL_TEST);

    ShadowStencilFunc();

    glEnable(GL_CULL_FACE);
    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
    glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
    glStencilMask(~0);
    glStencilFunc(GL_LESS, 0, ~0);

    glDisable(GL_DEPTH_TEST);
    PIELIGHT grey;
    grey.byte = { 0, 0, 0, 128 };
    pie_BoxFill(0, 0, width, height, grey, REND_ALPHA);

    pie_SetRendMode(REND_OPAQUE);
    glDisable(GL_STENCIL_TEST);
    glEnable(GL_DEPTH_TEST);
    glDepthMask(GL_TRUE);

    scshapes.resize(0);
}

示例#2

文件： piedraw.cpp 项目： Emdek/warzone2100

static void pie_DrawShadows(void)
{
	const float width = pie_GetVideoBufferWidth();
	const float height = pie_GetVideoBufferHeight();

	pie_SetTexturePage(TEXPAGE_NONE);

	glPushMatrix();

	pie_SetAlphaTest(false);
	glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
	glDepthFunc(GL_LESS);
	glDepthMask(GL_FALSE);
	glEnable(GL_STENCIL_TEST);

	ShadowStencilFunc();

	pie_SetRendMode(REND_ALPHA);
	glEnable(GL_CULL_FACE);
	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
	glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
	glStencilMask(~0);
	glStencilFunc(GL_LESS, 0, ~0);
	glColor4f(0, 0, 0, 0.5);

	pie_PerspectiveEnd();
	glLoadIdentity();
	glDisable(GL_DEPTH_TEST);
	glBegin(GL_TRIANGLE_STRIP);
		glVertex2f(0, 0);
		glVertex2f(width, 0);
		glVertex2f(0, height);
		glVertex2f(width, height);
	glEnd();
	pie_PerspectiveBegin();

	pie_SetRendMode(REND_OPAQUE);
	glDisable(GL_STENCIL_TEST);
	glEnable(GL_DEPTH_TEST);
	glDepthMask(GL_TRUE);

	glPopMatrix();

	scshapes.clear();
}