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ZealOS/docs/System/Gr/GrDC.ZC.html
TomAwezome 48d4f999cb Update documentation.
2021-12-11 06:10:58 -05:00

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<a name="l1"></a><span class=cF0>#</span><span class=cF1>help_index</span><span class=cF0> </span><span class=cF6>&quot;Graphics/Math/3D Transformation&quot;</span><span class=cF0>
<a name="l2"></a>#</span><span class=cF1>help_file</span><span class=cF0> </span><span class=cF6>&quot;::/Doc/Transform&quot;</span><span class=cF0>
<a name="l3"></a>
<a name="l4"></a>#</span><span class=cF1>define</span><span class=cF0> </span><span class=cF3>GR_SCALE</span><span class=cF0> (</span><span class=cFE>1</span><span class=cF0>&lt;&lt;</span><span class=cFE>32</span><span class=cF0>)
<a name="l5"></a>
<a name="l6"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>Mat4x4MulXYZ</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> *r, </span><span class=cF9>I64</span><span class=cF0> *_x, </span><span class=cF9>I64</span><span class=cF0> *_y, </span><span class=cF9>I64</span><span class=cF0> *_z)
<a name="l7"></a>{</span><span class=cF2>//Rotate 3D point using 4x4 matrix. Uses </span><a href="https://zeal-operating-system.github.io/ZealOS/Demo/Lectures/FixedPoint.ZC.html#l1"><span class=cF4>fixed-point</span></a><span class=cF2>.</span><span class=cF0>
<a name="l8"></a> </span><span class=cF9>I64</span><span class=cF0> x1, y1, z1, xx = *_x, yy = *_y, zz = *_z;
<a name="l9"></a>
<a name="l10"></a> x1 = (r[</span><span class=cFE>0</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>0</span><span class=cF0>] * xx + r[</span><span class=cFE>0</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0>] * yy + r[</span><span class=cFE>0</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>2</span><span class=cF0>] * zz + r[</span><span class=cFE>0</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>3</span><span class=cF0>]) &gt;&gt; </span><span class=cFE>32</span><span class=cF0>;
<a name="l11"></a> y1 = (r[</span><span class=cFE>1</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>0</span><span class=cF0>] * xx + r[</span><span class=cFE>1</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0>] * yy + r[</span><span class=cFE>1</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>2</span><span class=cF0>] * zz + r[</span><span class=cFE>1</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>3</span><span class=cF0>]) &gt;&gt; </span><span class=cFE>32</span><span class=cF0>;
<a name="l12"></a> z1 = (r[</span><span class=cFE>2</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>0</span><span class=cF0>] * xx + r[</span><span class=cFE>2</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0>] * yy + r[</span><span class=cFE>2</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>2</span><span class=cF0>] * zz + r[</span><span class=cFE>2</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>3</span><span class=cF0>]) &gt;&gt; </span><span class=cFE>32</span><span class=cF0>;
<a name="l13"></a> *_x = x1;
<a name="l14"></a> *_y = y1;
<a name="l15"></a> *_z = z1;
<a name="l16"></a>}
<a name="l17"></a>
<a name="l18"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>DCTransform</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc, </span><span class=cF9>I64</span><span class=cF0> *_x, </span><span class=cF9>I64</span><span class=cF0> *_y, </span><span class=cF9>I64</span><span class=cF0> *_z)
<a name="l19"></a>{</span><span class=cF2>//This is the default dc-&gt;transform() callback.</span><span class=cF0>
<a name="l20"></a></span><span class=cF2>//Uses </span><a href="https://zeal-operating-system.github.io/ZealOS/Demo/Lectures/FixedPoint.ZC.html#l1"><span class=cF4>fixed-point</span></a><span class=cF2>.</span><span class=cF0>
<a name="l21"></a> </span><span class=cF5>Mat4x4MulXYZ</span><span class=cF0>(dc-&gt;r, _x, _y, _z);
<a name="l22"></a> *_x += dc-&gt;x;
<a name="l23"></a> *_y += dc-&gt;y;
<a name="l24"></a> *_z += dc-&gt;z;
<a name="l25"></a>}
<a name="l26"></a>
<a name="l27"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>I64</span><span class=cF0> *</span><span class=cF5>Mat4x4IdentEqu</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> *r)
<a name="l28"></a>{</span><span class=cF2>//Set matrix to identity. Uses </span><a href="https://zeal-operating-system.github.io/ZealOS/Demo/Lectures/FixedPoint.ZC.html#l1"><span class=cF4>fixed-point</span></a><span class=cF2>.</span><span class=cF0>
<a name="l29"></a> </span><span class=cF5>MemSet</span><span class=cF0>(r, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>I64</span><span class=cF7>)</span><span class=cF0>*</span><span class=cFE>16</span><span class=cF0>);
<a name="l30"></a> r[</span><span class=cFE>0</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>0</span><span class=cF0>].i32[</span><span class=cFE>1</span><span class=cF0>] = </span><span class=cFE>1</span><span class=cF0>;
<a name="l31"></a> r[</span><span class=cFE>1</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0>].i32[</span><span class=cFE>1</span><span class=cF0>] = </span><span class=cFE>1</span><span class=cF0>;
<a name="l32"></a> r[</span><span class=cFE>2</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>2</span><span class=cF0>].i32[</span><span class=cFE>1</span><span class=cF0>] = </span><span class=cFE>1</span><span class=cF0>;
<a name="l33"></a> r[</span><span class=cFE>3</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>3</span><span class=cF0>].i32[</span><span class=cFE>1</span><span class=cF0>] = </span><span class=cFE>1</span><span class=cF0>;
<a name="l34"></a>
<a name="l35"></a> </span><span class=cF1>return</span><span class=cF0> r;
<a name="l36"></a>}
<a name="l37"></a>
<a name="l38"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>I64</span><span class=cF0> *</span><span class=cF5>Mat4x4IdentNew</span><span class=cF0>(</span><span class=cF9>CTask</span><span class=cF0> *mem_task=</span><span class=cF3>NULL</span><span class=cF0>)
<a name="l39"></a>{</span><span class=cF2>//MAlloc an identity matrix. Uses </span><a href="https://zeal-operating-system.github.io/ZealOS/Demo/Lectures/FixedPoint.ZC.html#l1"><span class=cF4>fixed-point</span></a><span class=cF2>.</span><span class=cF0>
<a name="l40"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cF5>Mat4x4IdentEqu</span><span class=cF0>(</span><span class=cF5>MAlloc</span><span class=cF7>(</span><span class=cF1>sizeof</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0>) * </span><span class=cFE>16</span><span class=cF0>, mem_task</span><span class=cF7>)</span><span class=cF0>);
<a name="l41"></a>}
<a name="l42"></a>
<a name="l43"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>Mat4x4NormSqr65536</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> *r)
<a name="l44"></a>{</span><span class=cF2>//Norm Squared of r.</span><span class=cF0>
<a name="l45"></a></span><span class=cF2>//(1.0/Sqrt(3))*65536=37837.22</span><span class=cF0>
<a name="l46"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cF5>SqrI64</span><span class=cF0>(</span><span class=cF7>(</span><span class=cF0>r[</span><span class=cFE>0</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>0</span><span class=cF0>] * </span><span class=cFE>37838</span><span class=cF0> + r[</span><span class=cFE>0</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0>] * </span><span class=cFE>37838</span><span class=cF0> + r[</span><span class=cFE>0</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>2</span><span class=cF0>] * </span><span class=cFE>37838</span><span class=cF7>)</span><span class=cF0> &gt;&gt; </span><span class=cFE>32</span><span class=cF0>) +
<a name="l47"></a> </span><span class=cF5>SqrI64</span><span class=cF0>(</span><span class=cF7>(</span><span class=cF0>r[</span><span class=cFE>1</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>0</span><span class=cF0>] * </span><span class=cFE>37837</span><span class=cF0> + r[</span><span class=cFE>1</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0>] * </span><span class=cFE>37837</span><span class=cF0> + r[</span><span class=cFE>1</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>2</span><span class=cF0>] * </span><span class=cFE>37837</span><span class=cF7>)</span><span class=cF0> &gt;&gt; </span><span class=cFE>32</span><span class=cF0>) +
<a name="l48"></a> </span><span class=cF5>SqrI64</span><span class=cF0>(</span><span class=cF7>(</span><span class=cF0>r[</span><span class=cFE>2</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>0</span><span class=cF0>] * </span><span class=cFE>37837</span><span class=cF0> + r[</span><span class=cFE>2</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0>] * </span><span class=cFE>37837</span><span class=cF0> + r[</span><span class=cFE>2</span><span class=cF0> * </span><span class=cFE>4</span><span class=cF0> + </span><span class=cFE>2</span><span class=cF0>] * </span><span class=cFE>37837</span><span class=cF7>)</span><span class=cF0> &gt;&gt; </span><span class=cFE>32</span><span class=cF0>);
<a name="l49"></a>}
<a name="l50"></a>
<a name="l51"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>DCMat4x4Set</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc=</span><span class=cF3>NULL</span><span class=cF0>, </span><span class=cF9>I64</span><span class=cF0> *r)
<a name="l52"></a>{</span><span class=cF2>//Set device context's rot matrix. Will be </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/Memory/MAllocFree.ZC.html#l387"><span class=cF4>Free</span></a><span class=cF2>d() in </span><a href="https://zeal-operating-system.github.io/ZealOS/System/Gr/GrDC.ZC.html#l230"><span class=cF4>DCDel</span></a><span class=cF2>().Uses </span><a href="https://zeal-operating-system.github.io/ZealOS/Demo/Lectures/FixedPoint.ZC.html#l1"><span class=cF4>fixed-point</span></a><span class=cF2>.</span><span class=cF0>
<a name="l53"></a></span><span class=cF2>//The main purpose is to set matrix norm for thick scaling.</span><span class=cF0>
<a name="l54"></a> </span><span class=cF2>//NULL as dc means gr.dc</span><span class=cF0>
<a name="l55"></a> </span><span class=cF1>if</span><span class=cF0> (!dc)
<a name="l56"></a> dc = </span><span class=cFB>gr</span><span class=cF0>.dc;
<a name="l57"></a> dc-&gt;r = r;
<a name="l58"></a> dc-&gt;r_norm = </span><span class=cF5>Sqrt</span><span class=cF0>(</span><span class=cF5>Mat4x4NormSqr65536</span><span class=cF7>(</span><span class=cF0>r</span><span class=cF7>)</span><span class=cF0>) * </span><span class=cFE>65536</span><span class=cF0>; </span><span class=cF2>//scaled 32 bits</span><span class=cF0>
<a name="l59"></a>}
<a name="l60"></a>
<a name="l61"></a>#</span><span class=cF1>help_index</span><span class=cF0> </span><span class=cF6>&quot;Graphics/Mesh&quot;</span><span class=cF0>
<a name="l62"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>DCLighting</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc, </span><span class=cF9>CD3I32</span><span class=cF0> *p1, </span><span class=cF9>CD3I32</span><span class=cF0> *p2, </span><span class=cF9>CD3I32</span><span class=cF0> *p3, </span><span class=cF9>CColorROPU32</span><span class=cF0> color)
<a name="l63"></a>{</span><span class=cF2>//This is the default dc-&gt;lighting() callback.</span><span class=cF0>
<a name="l64"></a> </span><span class=cF9>CD3I32</span><span class=cF0> v1, v2;
<a name="l65"></a> </span><span class=cF9>I64</span><span class=cF0> i, vn_x, vn_y, vn_z;
<a name="l66"></a> </span><span class=cF1>F64</span><span class=cF0> d;
<a name="l67"></a>
<a name="l68"></a> v1.x = p1-&gt;x - p2-&gt;x;
<a name="l69"></a> v1.y = p1-&gt;y - p2-&gt;y;
<a name="l70"></a> v1.z = p1-&gt;z - p2-&gt;z;
<a name="l71"></a>
<a name="l72"></a> v2.x = p3-&gt;x - p2-&gt;x;
<a name="l73"></a> v2.y = p3-&gt;y - p2-&gt;y;
<a name="l74"></a> v2.z = p3-&gt;z - p2-&gt;z;
<a name="l75"></a>
<a name="l76"></a> </span><span class=cF2>//V1 and V2 are vects along two sides</span><span class=cF0>
<a name="l77"></a> </span><span class=cF2>//of the tri joined at p2.</span><span class=cF0>
<a name="l78"></a>
<a name="l79"></a> vn_x = v1.y * v2.z - v1.z * v2.y;
<a name="l80"></a> vn_y = v1.z * v2.x - v1.x * v2.z;
<a name="l81"></a> vn_z = v1.x * v2.y - v1.y * v2.x;
<a name="l82"></a> </span><span class=cF1>if</span><span class=cF0> (d =</span><span class=cF5>Sqrt</span><span class=cF7>(</span><span class=cF5>SqrI64</span><span class=cF0>(vn_x) + </span><span class=cF5>SqrI64</span><span class=cF0>(vn_y) + </span><span class=cF5>SqrI64</span><span class=cF0>(vn_z)</span><span class=cF7>)</span><span class=cF0>)
<a name="l83"></a> d = </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cFE>16</span><span class=cF0> / d;
<a name="l84"></a> vn_x *= d;
<a name="l85"></a> vn_y *= d;
<a name="l86"></a> vn_z *= d;
<a name="l87"></a></span><span class=cF2>//Vn is the cross product of V1 and V3</span><span class=cF0>
<a name="l88"></a> </span><span class=cF2>//which means it is perpendicular. It</span><span class=cF0>
<a name="l89"></a> </span><span class=cF2>//is the normal vect to the surface.</span><span class=cF0>
<a name="l90"></a> </span><span class=cF2>//It has been scaled to length 65536.</span><span class=cF0>
<a name="l91"></a>
<a name="l92"></a> </span><span class=cF2>//Light source has been scaled to length 65536.</span><span class=cF0>
<a name="l93"></a> i = (vn_x * dc-&gt;ls.x + vn_y * dc-&gt;ls.y + vn_z * dc-&gt;ls.z) &gt;&gt; </span><span class=cFE>16</span><span class=cF0>;
<a name="l94"></a></span><span class=cF2>//The dot product of the light source</span><span class=cF0>
<a name="l95"></a> </span><span class=cF2>//vect and the surface normal</span><span class=cF0>
<a name="l96"></a> </span><span class=cF2>//gives an illumination number.</span><span class=cF0>
<a name="l97"></a> </span><span class=cF2>//65536*65536&gt;&gt;16=65536</span><span class=cF0>
<a name="l98"></a>
<a name="l99"></a> </span><span class=cF2>//ZealOS will generate a random U16</span><span class=cF0>
<a name="l100"></a> </span><span class=cF2>//and compare to dither_probability_u16 and</span><span class=cF0>
<a name="l101"></a> </span><span class=cF2>//will pick from two colors.</span><span class=cF0>
<a name="l102"></a> </span><span class=cF2>//Probability dithering does not work with thick&gt;1 at this time.</span><span class=cF0>
<a name="l103"></a> </span><span class=cF1>if</span><span class=cF0> (color.c0.rop &amp; </span><span class=cF3>ROPBF_TWO_SIDED</span><span class=cF0>)
<a name="l104"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l105"></a> color.c0.rop &amp;= ~</span><span class=cF3>ROPBF_TWO_SIDED</span><span class=cF0>;
<a name="l106"></a> i = </span><span class=cF5>AbsI64</span><span class=cF0>(i) &lt;&lt; </span><span class=cFE>1</span><span class=cF0>;
<a name="l107"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l108"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l109"></a> i += </span><span class=cFE>65536</span><span class=cF0>;
<a name="l110"></a> </span><span class=cF1>if</span><span class=cF0> (color.c0.rop &amp; </span><span class=cF3>ROPBF_HALF_RANGE_COLOR</span><span class=cF0>)
<a name="l111"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l112"></a> color.c0.rop &amp;= ~</span><span class=cF3>ROPBF_HALF_RANGE_COLOR</span><span class=cF0>;
<a name="l113"></a> i &gt;&gt;= </span><span class=cFE>1</span><span class=cF0>;
<a name="l114"></a> </span><span class=cF1>if</span><span class=cF0> (color &gt;= </span><span class=cFE>8</span><span class=cF0>)
<a name="l115"></a> {
<a name="l116"></a> color -= </span><span class=cFE>8</span><span class=cF0>;
<a name="l117"></a> i += </span><span class=cFE>65536</span><span class=cF0>;
<a name="l118"></a> }
<a name="l119"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l120"></a> </span><span class=cF1>if</span><span class=cF0> (i &lt; </span><span class=cFE>65536</span><span class=cF0>)
<a name="l121"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l122"></a> dc-&gt;color = </span><span class=cF3>ROPF_PROBABILITY_DITHER</span><span class=cF0> + color &lt;&lt; </span><span class=cFE>16</span><span class=cF0> + </span><span class=cF3>BLACK</span><span class=cF0>;
<a name="l123"></a> dc-&gt;dither_probability_u16 = i;
<a name="l124"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l125"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l126"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l127"></a> dc-&gt;color = </span><span class=cF3>ROPF_PROBABILITY_DITHER</span><span class=cF0> + (color ^ </span><span class=cFE>8</span><span class=cF0>) &lt;&lt; </span><span class=cFE>16</span><span class=cF0> + color;
<a name="l128"></a> dc-&gt;dither_probability_u16 = i - </span><span class=cFE>65536</span><span class=cF0>;
<a name="l129"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l130"></a>}
<a name="l131"></a>
<a name="l132"></a>#</span><span class=cF1>help_index</span><span class=cF0> </span><span class=cF6>&quot;Graphics/Device Contexts&quot;</span><span class=cF0>
<a name="l133"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>DCFill</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc=</span><span class=cF3>NULL</span><span class=cF0>, </span><span class=cF9>CColorROPU32</span><span class=cF0> val=</span><span class=cF3>TRANSPARENT</span><span class=cF0>)
<a name="l134"></a>{</span><span class=cF2>//Fill entire device context with color.</span><span class=cF0>
<a name="l135"></a> </span><span class=cF1>if</span><span class=cF0> (!dc)
<a name="l136"></a> dc = </span><span class=cFB>gr</span><span class=cF0>.dc;
<a name="l137"></a> </span><span class=cF5>MemSet</span><span class=cF0>(dc-&gt;body, val, dc-&gt;width_internal * dc-&gt;height);
<a name="l138"></a>}
<a name="l139"></a>
<a name="l140"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>DCClear</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc=</span><span class=cF3>NULL</span><span class=cF0>)
<a name="l141"></a>{</span><span class=cF2>//Set entire device context image body to 0 (BLACK).</span><span class=cF0>
<a name="l142"></a> </span><span class=cF1>if</span><span class=cF0> (!dc)
<a name="l143"></a> dc = </span><span class=cFB>gr</span><span class=cF0>.dc;
<a name="l144"></a> </span><span class=cF5>DCFill</span><span class=cF0>(dc, </span><span class=cFE>0</span><span class=cF0>);
<a name="l145"></a>}
<a name="l146"></a>
<a name="l147"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>DCReset</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc)
<a name="l148"></a>{</span><span class=cF2>//Reset </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KernelA.HH.html#l4299"><span class=cF4>CDC</span></a><span class=cF2> structure members but not image body, itself.</span><span class=cF0>
<a name="l149"></a> dc-&gt;color = </span><span class=cF3>BLACK</span><span class=cF0>;
<a name="l150"></a> dc-&gt;color2 = </span><span class=cF3>BLACK</span><span class=cF0>;
<a name="l151"></a> dc-&gt;bkcolor = </span><span class=cF3>BLACK</span><span class=cF0>;
<a name="l152"></a> dc-&gt;collision_count = </span><span class=cFE>0</span><span class=cF0>;
<a name="l153"></a> dc-&gt;thick = </span><span class=cFE>1</span><span class=cF0>;
<a name="l154"></a> dc-&gt;ls.x = </span><span class=cFE>37837</span><span class=cF0>; </span><span class=cF2>//1&lt;&lt;16/Sqrt(3)</span><span class=cF0>
<a name="l155"></a> dc-&gt;ls.y = </span><span class=cFE>37837</span><span class=cF0>;
<a name="l156"></a> dc-&gt;ls.z = </span><span class=cFE>37837</span><span class=cF0>;
<a name="l157"></a> dc-&gt;x = </span><span class=cFE>0</span><span class=cF0>;
<a name="l158"></a> dc-&gt;y = </span><span class=cFE>0</span><span class=cF0>;
<a name="l159"></a> dc-&gt;z = </span><span class=cFE>0</span><span class=cF0>;
<a name="l160"></a> dc-&gt;transform = &amp;</span><span class=cF5>DCTransform</span><span class=cF0>;
<a name="l161"></a> dc-&gt;lighting = &amp;</span><span class=cF5>DCLighting</span><span class=cF0>;
<a name="l162"></a> </span><span class=cF5>Mat4x4IdentEqu</span><span class=cF0>(dc-&gt;r);
<a name="l163"></a> dc-&gt;r_norm = </span><span class=cF3>GR_SCALE</span><span class=cF0>;
<a name="l164"></a> dc-&gt;flags &amp;= ~(</span><span class=cF3>DCF_SYMMETRY</span><span class=cF0> | </span><span class=cF3>DCF_TRANSFORMATION</span><span class=cF0> | </span><span class=cF3>DCF_JUST_MIRROR</span><span class=cF0>);
<a name="l165"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(dc-&gt;palette, </span><span class=cFB>gr32_palette_std</span><span class=cF0>, </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>CBGR24</span><span class=cF7>)</span><span class=cF0> * </span><span class=cF3>COLORS_NUM</span><span class=cF0>);
<a name="l166"></a>}
<a name="l167"></a>
<a name="l168"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>DCExtentsInit</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc=</span><span class=cF3>NULL</span><span class=cF0>)
<a name="l169"></a>{</span><span class=cF2>//Init markers for extent of next newly drawn graphics.</span><span class=cF0>
<a name="l170"></a></span><span class=cF2>//NULL means gr.dc</span><span class=cF0>
<a name="l171"></a> </span><span class=cF2>//See </span><a href="https://zeal-operating-system.github.io/ZealOS/Demo/Graphics/Extents.ZC.html#l1"><span class=cF4>::/Demo/Graphics/Extents.ZC</span></a><span class=cF0>
<a name="l172"></a> </span><span class=cF2>//You should clear the record flag yourself</span><span class=cF0>
<a name="l173"></a> </span><span class=cF1>if</span><span class=cF0> (!dc)
<a name="l174"></a> dc = </span><span class=cFB>gr</span><span class=cF0>.dc;
<a name="l175"></a> dc-&gt;flags |= </span><span class=cF3>DCF_RECORD_EXTENTS</span><span class=cF0>;
<a name="l176"></a> dc-&gt;min_x = </span><span class=cF3>I64_MAX</span><span class=cF0>;
<a name="l177"></a> dc-&gt;max_x = </span><span class=cF3>I64_MIN</span><span class=cF0>;
<a name="l178"></a> dc-&gt;min_y = </span><span class=cF3>I64_MAX</span><span class=cF0>;
<a name="l179"></a> dc-&gt;max_y = </span><span class=cF3>I64_MIN</span><span class=cF0>;
<a name="l180"></a>}
<a name="l181"></a>
<a name="l182"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>CDC</span><span class=cF0> *</span><span class=cF5>DCAlias</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc=</span><span class=cF3>NULL</span><span class=cF0>, </span><span class=cF9>CTask</span><span class=cF0> *task=</span><span class=cF3>NULL</span><span class=cF0>)
<a name="l183"></a>{</span><span class=cF2>//Create alias of dc, so can change pen, color, etc.</span><span class=cF0>
<a name="l184"></a></span><span class=cF2>//NULL means gr.dc</span><span class=cF0>
<a name="l185"></a> </span><span class=cF9>CDC</span><span class=cF0> *res;
<a name="l186"></a>
<a name="l187"></a> </span><span class=cF1>if</span><span class=cF0> (!dc)
<a name="l188"></a> dc = </span><span class=cFB>gr</span><span class=cF0>.dc;
<a name="l189"></a> </span><span class=cF1>if</span><span class=cF0> (!task)
<a name="l190"></a> task = </span><span class=cF5>Fs</span><span class=cF0>;
<a name="l191"></a> </span><span class=cF1>if</span><span class=cF0> (dc-&gt;dc_signature != </span><span class=cF3>DCS_SIGNATURE_VAL</span><span class=cF0>)
<a name="l192"></a> </span><span class=cF5>throw</span><span class=cF0>(</span><span class=cF6>'Graphics'</span><span class=cF0>);
<a name="l193"></a>
<a name="l194"></a> res = </span><span class=cF5>MAlloc</span><span class=cF0>(</span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>CDC</span><span class=cF7>)</span><span class=cF0>, task);
<a name="l195"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(res, dc, </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>CDC</span><span class=cF7>)</span><span class=cF0>);
<a name="l196"></a> res-&gt;win_task = res-&gt;mem_task = task;
<a name="l197"></a> res-&gt;r = </span><span class=cF5>MAlloc</span><span class=cF0>(</span><span class=cFE>16</span><span class=cF0> * </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>I64</span><span class=cF7>)</span><span class=cF0>, task);
<a name="l198"></a> </span><span class=cF5>DCReset</span><span class=cF0>(res);
<a name="l199"></a> res-&gt;flags |= </span><span class=cF3>DCF_ALIAS</span><span class=cF0>;
<a name="l200"></a> res-&gt;alias = dc;
<a name="l201"></a>
<a name="l202"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l203"></a>}
<a name="l204"></a>
<a name="l205"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>CDC</span><span class=cF0> *</span><span class=cF5>DCNew</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> width, </span><span class=cF9>I64</span><span class=cF0> height, </span><span class=cF9>CTask</span><span class=cF0> *task=</span><span class=cF3>NULL</span><span class=cF0>, </span><span class=cF1>Bool</span><span class=cF0> null_bitmap=</span><span class=cF3>FALSE</span><span class=cF0>)
<a name="l206"></a>{</span><span class=cF2>//Create new width x height device context.</span><span class=cF0>
<a name="l207"></a></span><span class=cF2>//Internally only allows widths which are divisible by 8.</span><span class=cF0>
<a name="l208"></a> </span><span class=cF2>//Don't forget these </span><span class=cF9><u>sizeof(CDC)</u></span><span class=cF2>.</span><span class=cF0>
<a name="l209"></a> </span><span class=cF9>CDC</span><span class=cF0> *res;
<a name="l210"></a>
<a name="l211"></a> </span><span class=cF1>if</span><span class=cF0> (!task)
<a name="l212"></a> task = </span><span class=cF5>Fs</span><span class=cF0>;
<a name="l213"></a> res=</span><span class=cF5>CAlloc</span><span class=cF0>(</span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>CDC</span><span class=cF7>)</span><span class=cF0>, task);
<a name="l214"></a> res-&gt;win_task = task;
<a name="l215"></a> res-&gt;mem_task = task;
<a name="l216"></a> res-&gt;width = width;
<a name="l217"></a> res-&gt;width_internal = (width + </span><span class=cFE>7</span><span class=cF0>) &amp; ~</span><span class=cFE>7</span><span class=cF0>;
<a name="l218"></a> res-&gt;height = height;
<a name="l219"></a> </span><span class=cF1>if</span><span class=cF0> (null_bitmap)
<a name="l220"></a> res-&gt;flags |= </span><span class=cF3>DCF_DONT_DRAW</span><span class=cF0>;
<a name="l221"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l222"></a> res-&gt;body = </span><span class=cF5>CAlloc</span><span class=cF0>(res-&gt;width_internal * res-&gt;height, task);
<a name="l223"></a> res-&gt;r = </span><span class=cF5>MAlloc</span><span class=cF0>(</span><span class=cFE>16</span><span class=cF0> * </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>I64</span><span class=cF7>)</span><span class=cF0>, task);
<a name="l224"></a> </span><span class=cF5>DCReset</span><span class=cF0>(res);
<a name="l225"></a> res-&gt;dc_signature = </span><span class=cF3>DCS_SIGNATURE_VAL</span><span class=cF0>;
<a name="l226"></a>
<a name="l227"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l228"></a>}
<a name="l229"></a>
<a name="l230"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>DCDel</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc)
<a name="l231"></a>{</span><span class=cF2>//Free dc, image body, rot mat and depth buf.</span><span class=cF0>
<a name="l232"></a> </span><span class=cF1>if</span><span class=cF0> (!dc)
<a name="l233"></a> </span><span class=cF1>return</span><span class=cF0>;
<a name="l234"></a> </span><span class=cF1>if</span><span class=cF0> (dc-&gt;dc_signature != </span><span class=cF3>DCS_SIGNATURE_VAL</span><span class=cF0>)
<a name="l235"></a> </span><span class=cF5>throw</span><span class=cF0>(</span><span class=cF6>'Graphics'</span><span class=cF0>);
<a name="l236"></a> dc-&gt;dc_signature = </span><span class=cFE>0</span><span class=cF0>;
<a name="l237"></a> </span><span class=cF5>Free</span><span class=cF0>(dc-&gt;r);
<a name="l238"></a> </span><span class=cF1>if</span><span class=cF0> (!</span><span class=cF7>(</span><span class=cF0>dc-&gt;flags &amp; </span><span class=cF3>DCF_ALIAS</span><span class=cF7>)</span><span class=cF0>)
<a name="l239"></a> </span><span class=cF5>Free</span><span class=cF0>(dc-&gt;body);
<a name="l240"></a> </span><span class=cF5>Free</span><span class=cF0>(dc-&gt;depth_buf);
<a name="l241"></a> </span><span class=cF5>Free</span><span class=cF0>(dc);
<a name="l242"></a>}
<a name="l243"></a>
<a name="l244"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>DCSize</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc)
<a name="l245"></a>{</span><span class=cF2>//Mem size of header, image body and depth buffer.</span><span class=cF0>
<a name="l246"></a> </span><span class=cF1>if</span><span class=cF0> (dc)
<a name="l247"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cF5>MSize2</span><span class=cF0>(dc) + </span><span class=cF5>MSize2</span><span class=cF0>(dc-&gt;body) + </span><span class=cF5>MSize2</span><span class=cF0>(dc-&gt;depth_buf);
<a name="l248"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l249"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l250"></a>}
<a name="l251"></a>
<a name="l252"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>I32</span><span class=cF0> *</span><span class=cF5>DCDepthBufReset</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc)
<a name="l253"></a>{</span><span class=cF2>//Reset device context depth buf to far away.</span><span class=cF0>
<a name="l254"></a> </span><span class=cF1>if</span><span class=cF0> (dc-&gt;depth_buf)
<a name="l255"></a> </span><span class=cF5>MemSetU32</span><span class=cF0>(dc-&gt;depth_buf, </span><span class=cF3>I32_MAX</span><span class=cF0>, dc-&gt;width_internal * dc-&gt;height);
<a name="l256"></a>
<a name="l257"></a> </span><span class=cF1>return</span><span class=cF0> dc-&gt;depth_buf;
<a name="l258"></a>}
<a name="l259"></a>
<a name="l260"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>I32</span><span class=cF0> *</span><span class=cF5>DCDepthBufAlloc</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc)
<a name="l261"></a>{</span><span class=cF2>//Alloc a 32-bit depth buffer for device context.</span><span class=cF0>
<a name="l262"></a> </span><span class=cF5>Free</span><span class=cF0>(dc-&gt;depth_buf);
<a name="l263"></a> dc-&gt;depth_buf = </span><span class=cF5>MAlloc</span><span class=cF0>(dc-&gt;width_internal * dc-&gt;height * </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>I32</span><span class=cF7>)</span><span class=cF0>, dc-&gt;mem_task);
<a name="l264"></a>
<a name="l265"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cF5>DCDepthBufReset</span><span class=cF0>(dc);
<a name="l266"></a>}
<a name="l267"></a>
<a name="l268"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>CDC</span><span class=cF0> *</span><span class=cF5>DCCopy</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc, </span><span class=cF9>CTask</span><span class=cF0> *task=</span><span class=cF3>NULL</span><span class=cF0>)
<a name="l269"></a>{</span><span class=cF2>//Alloc copy of dc, including image body, rot mat and depth buf.</span><span class=cF0>
<a name="l270"></a> </span><span class=cF9>CDC</span><span class=cF0> *res;
<a name="l271"></a>
<a name="l272"></a> </span><span class=cF1>if</span><span class=cF0> (!dc)
<a name="l273"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cF3>NULL</span><span class=cF0>;
<a name="l274"></a> </span><span class=cF1>if</span><span class=cF0> (dc-&gt;dc_signature != </span><span class=cF3>DCS_SIGNATURE_VAL</span><span class=cF0>)
<a name="l275"></a> </span><span class=cF5>throw</span><span class=cF0>(</span><span class=cF6>'Graphics'</span><span class=cF0>);
<a name="l276"></a> res = </span><span class=cF5>MAllocIdent</span><span class=cF0>(dc, task);
<a name="l277"></a> </span><span class=cF5>DCMat4x4Set</span><span class=cF0>(res, </span><span class=cF5>Mat4x4New</span><span class=cF7>(</span><span class=cF0>dc-&gt;r, task</span><span class=cF7>)</span><span class=cF0>);
<a name="l278"></a> res-&gt;mem_task = task;
<a name="l279"></a> res-&gt;body = </span><span class=cF5>MAllocIdent</span><span class=cF0>(dc-&gt;body, task);
<a name="l280"></a> res-&gt;depth_buf = </span><span class=cF5>MAllocIdent</span><span class=cF0>(dc-&gt;depth_buf, task);
<a name="l281"></a>
<a name="l282"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l283"></a>}
<a name="l284"></a>
<a name="l285"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>DCMono</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc, </span><span class=cF9>I64</span><span class=cF0> quest=</span><span class=cF3>TRANSPARENT</span><span class=cF0>, </span><span class=cF9>I64</span><span class=cF0> true_color=</span><span class=cFE>0</span><span class=cF0>, </span><span class=cF9>I64</span><span class=cF0> false_color=</span><span class=cF3>COLOR_MONO</span><span class=cF0>)
<a name="l286"></a>{</span><span class=cF2>//Set entire device context to one of two colors.</span><span class=cF0>
<a name="l287"></a> </span><span class=cF9>I64</span><span class=cF0> i;
<a name="l288"></a> </span><span class=cF1>U8</span><span class=cF0> *dst;
<a name="l289"></a>
<a name="l290"></a> dst = dc-&gt;body;
<a name="l291"></a> i = dc-&gt;width_internal * dc-&gt;height;
<a name="l292"></a> </span><span class=cF1>while</span><span class=cF0> (i--)
<a name="l293"></a> </span><span class=cF1>if</span><span class=cF0> (*dst == quest)
<a name="l294"></a> *dst++ = true_color;
<a name="l295"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l296"></a> *dst++ = false_color;
<a name="l297"></a>}
<a name="l298"></a>
<a name="l299"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>DCColorChange</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc, </span><span class=cF9>I64</span><span class=cF0> src_color, </span><span class=cF9>I64</span><span class=cF0> dst_color=</span><span class=cF3>TRANSPARENT</span><span class=cF0>)
<a name="l300"></a>{</span><span class=cF2>//Find and replace src color with dst in device context.</span><span class=cF0>
<a name="l301"></a> </span><span class=cF9>I64</span><span class=cF0> i, res = </span><span class=cFE>0</span><span class=cF0>;
<a name="l302"></a> </span><span class=cF1>U8</span><span class=cF0> *dst;
<a name="l303"></a>
<a name="l304"></a> dst = dc-&gt;body;
<a name="l305"></a> i = dc-&gt;width_internal * dc-&gt;height;
<a name="l306"></a> </span><span class=cF1>while</span><span class=cF0> (i--)
<a name="l307"></a> </span><span class=cF1>if</span><span class=cF0> (*dst == src_color)
<a name="l308"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l309"></a> *dst++ = dst_color;
<a name="l310"></a> res++;
<a name="l311"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l312"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l313"></a> dst++;
<a name="l314"></a>
<a name="l315"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l316"></a>}
<a name="l317"></a>
<a name="l318"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U8</span><span class=cF0> *</span><span class=cF5>DCSave</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0> *dc, </span><span class=cF9>I64</span><span class=cF0> *_size=</span><span class=cF3>NULL</span><span class=cF0>, </span><span class=cF9>I64</span><span class=cF0> dcsf_flags=</span><span class=cF3>NONE</span><span class=cF0>)
<a name="l319"></a>{</span><span class=cF2>//Stores device context to mem, perhaps, with compression.</span><span class=cF0>
<a name="l320"></a> </span><span class=cF1>U8</span><span class=cF0> *res, *ptr, *body;
<a name="l321"></a> </span><span class=cF9>I64</span><span class=cF0> body_size = dc-&gt;width_internal * dc-&gt;height, total_size, flags;
<a name="l322"></a> </span><span class=cF9>CBGR24</span><span class=cF0> palette[</span><span class=cF3>COLORS_NUM</span><span class=cF0>];
<a name="l323"></a>
<a name="l324"></a> body = dc-&gt;body;
<a name="l325"></a>
<a name="l326"></a> total_size = </span><span class=cF1>offset</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>end</span><span class=cF0>) - </span><span class=cF1>offset</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>start</span><span class=cF0>) + body_size;
<a name="l327"></a> flags = </span><span class=cFE>0</span><span class=cF0>;
<a name="l328"></a>
<a name="l329"></a> </span><span class=cF1>if</span><span class=cF0> (dcsf_flags &amp; </span><span class=cF3>DCSF_PALETTE_GET</span><span class=cF0>)
<a name="l330"></a> </span><span class=cF5>GrPaletteGet</span><span class=cF0>(palette);
<a name="l331"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l332"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(palette, &amp;dc-&gt;palette, </span><span class=cF3>COLORS_NUM</span><span class=cF0> * </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>CBGR24</span><span class=cF7>)</span><span class=cF0>);
<a name="l333"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>MemCompare</span><span class=cF7>(</span><span class=cF0>palette, </span><span class=cFB>gr32_palette_std</span><span class=cF0>, </span><span class=cF3>COLORS_NUM</span><span class=cF0> * </span><span class=cF1>sizeof</span><span class=cF0>(</span><span class=cF9>CBGR24</span><span class=cF0>)</span><span class=cF7>)</span><span class=cF0>)
<a name="l334"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l335"></a> flags |= </span><span class=cF3>DCF_PALETTE</span><span class=cF0>;
<a name="l336"></a> total_size += </span><span class=cF3>COLORS_NUM</span><span class=cF0> * </span><span class=cF1>sizeof</span><span class=cF0>(</span><span class=cF9>CBGR24</span><span class=cF0>);
<a name="l337"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l338"></a>
<a name="l339"></a> ptr = res = </span><span class=cF5>MAlloc</span><span class=cF0>(total_size);
<a name="l340"></a>
<a name="l341"></a>#</span><span class=cF1>assert</span><span class=cF0> !</span><span class=cF1>offset</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>start</span><span class=cF0>)
<a name="l342"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(ptr, &amp;dc-&gt;</span><span class=cF1>start</span><span class=cF0>, </span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>end</span><span class=cF7>)</span><span class=cF0> - </span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>start</span><span class=cF7>)</span><span class=cF0>);
<a name="l343"></a> ptr(</span><span class=cF9>CDC</span><span class=cF0> *)-&gt;flags = flags;
<a name="l344"></a> ptr += </span><span class=cF1>offset</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>end</span><span class=cF0>) - </span><span class=cF1>offset</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>start</span><span class=cF0>);
<a name="l345"></a>
<a name="l346"></a>#</span><span class=cF1>assert</span><span class=cF0> </span><span class=cF1>offset</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>end</span><span class=cF0>) == </span><span class=cF1>offset</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0>.palette)
<a name="l347"></a> </span><span class=cF1>if</span><span class=cF0> (flags &amp; </span><span class=cF3>DCF_PALETTE</span><span class=cF0>)
<a name="l348"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l349"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(ptr, palette, </span><span class=cF3>COLORS_NUM</span><span class=cF0> * </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>CBGR24</span><span class=cF7>)</span><span class=cF0>);
<a name="l350"></a> ptr += </span><span class=cF3>COLORS_NUM</span><span class=cF0> * </span><span class=cF1>sizeof</span><span class=cF0>(</span><span class=cF9>CBGR24</span><span class=cF0>);
<a name="l351"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l352"></a>
<a name="l353"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(ptr, body, body_size);
<a name="l354"></a> ptr += body_size;
<a name="l355"></a>
<a name="l356"></a> </span><span class=cF1>if</span><span class=cF0> (_size)
<a name="l357"></a> *_size = total_size;
<a name="l358"></a>
<a name="l359"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l360"></a>}
<a name="l361"></a>
<a name="l362"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>CDC</span><span class=cF0> *</span><span class=cF5>DCLoad</span><span class=cF0>(</span><span class=cF1>U8</span><span class=cF0> *src, </span><span class=cF9>I64</span><span class=cF0> *_size=</span><span class=cF3>NULL</span><span class=cF0>, </span><span class=cF9>CTask</span><span class=cF0> *task=</span><span class=cF3>NULL</span><span class=cF0>)
<a name="l363"></a>{</span><span class=cF2>//Loads device context from mem.</span><span class=cF0>
<a name="l364"></a> </span><span class=cF9>CDC</span><span class=cF0> *res;
<a name="l365"></a> </span><span class=cF1>U8</span><span class=cF0> *ptr = src;
<a name="l366"></a> </span><span class=cF9>I64</span><span class=cF0> body_size;
<a name="l367"></a>
<a name="l368"></a> </span><span class=cF1>if</span><span class=cF0> (!task)
<a name="l369"></a> task = </span><span class=cF5>Fs</span><span class=cF0>;
<a name="l370"></a> res = </span><span class=cF5>CAlloc</span><span class=cF0>(</span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>CDC</span><span class=cF7>)</span><span class=cF0>, task);
<a name="l371"></a> res-&gt;win_task = task;
<a name="l372"></a> res-&gt;mem_task = task;
<a name="l373"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(&amp;res-&gt;</span><span class=cF1>start</span><span class=cF0>, ptr, </span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>end</span><span class=cF7>)</span><span class=cF0> - </span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>start</span><span class=cF7>)</span><span class=cF0>);
<a name="l374"></a> ptr += </span><span class=cF1>offset</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>end</span><span class=cF0>) - </span><span class=cF1>offset</span><span class=cF0>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>start</span><span class=cF0>);
<a name="l375"></a>
<a name="l376"></a> </span><span class=cF1>if</span><span class=cF0> (res-&gt;flags &amp; </span><span class=cF3>DCF_PALETTE</span><span class=cF0>)
<a name="l377"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l378"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(&amp;res-&gt;palette, ptr, </span><span class=cF3>COLORS_NUM</span><span class=cF0> * </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>CBGR24</span><span class=cF7>)</span><span class=cF0>);
<a name="l379"></a> ptr += </span><span class=cF3>COLORS_NUM</span><span class=cF0> * </span><span class=cF1>sizeof</span><span class=cF0>(</span><span class=cF9>CBGR24</span><span class=cF0>);
<a name="l380"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l381"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l382"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(&amp;res-&gt;palette, </span><span class=cFB>gr32_palette_std</span><span class=cF0>, </span><span class=cF3>COLORS_NUM</span><span class=cF0> * </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>CBGR24</span><span class=cF7>)</span><span class=cF0>);
<a name="l383"></a>
<a name="l384"></a> body_size = res-&gt;width_internal * res-&gt;height;
<a name="l385"></a> res-&gt;body = </span><span class=cF5>MAlloc</span><span class=cF0>(body_size, task);
<a name="l386"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(res-&gt;body, ptr, body_size);
<a name="l387"></a> ptr += body_size;
<a name="l388"></a> res-&gt;thick = </span><span class=cFE>1</span><span class=cF0>;
<a name="l389"></a> res-&gt;r = </span><span class=cF5>Mat4x4IdentNew</span><span class=cF0>(task);
<a name="l390"></a> res-&gt;r_norm.u32[</span><span class=cFE>1</span><span class=cF0>] = </span><span class=cFE>1</span><span class=cF0>;
<a name="l391"></a> res-&gt;dc_signature = </span><span class=cF3>DCS_SIGNATURE_VAL</span><span class=cF0>;
<a name="l392"></a> </span><span class=cF1>if</span><span class=cF0> (_size)
<a name="l393"></a> *_size = ptr - src;
<a name="l394"></a>
<a name="l395"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l396"></a>}
<a name="l397"></a>
<a name="l398"></a>#</span><span class=cF1>help_index</span><span class=cF0> </span><span class=cF6>&quot;Graphics/GR Files&quot;</span><span class=cF0>
<a name="l399"></a>#</span><span class=cF1>help_file</span><span class=cF0> </span><span class=cF6>&quot;::/Doc/GRFiles&quot;</span><span class=cF0>
<a name="l400"></a>#</span><span class=cF1>help_index</span><span class=cF0> </span><span class=cF6>&quot;Graphics/Device Contexts;Graphics/GR Files&quot;</span><span class=cF0>
<a name="l401"></a>
<a name="l402"></a>#</span><span class=cF1>define</span><span class=cF0> </span><span class=cF3>GR_FILE_MAX</span><span class=cF0> (</span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>end</span><span class=cF7>)</span><span class=cF0> - </span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CDC</span><span class=cF0>.</span><span class=cF1>start</span><span class=cF7>)</span><span class=cF0> + </span><span class=cF3>COLORS_NUM</span><span class=cF0> * </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF9>CBGR24</span><span class=cF7>)</span><span class=cF0> + </span><span class=cF3>GR_WIDTH</span><span class=cF0> * </span><span class=cF3>GR_HEIGHT</span><span class=cF0>)
<a name="l403"></a>
<a name="l404"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>GRWrite</span><span class=cF0>(</span><span class=cF1>U8</span><span class=cF0> *filename, </span><span class=cF9>CDC</span><span class=cF0> *dc, </span><span class=cF9>I64</span><span class=cF0> dcsf_flags=</span><span class=cF3>NONE</span><span class=cF0>)
<a name="l405"></a>{</span><span class=cF2>//ZealOS GR File.</span><span class=cF0>
<a name="l406"></a> </span><span class=cF9>I64</span><span class=cF0> size;
<a name="l407"></a> </span><span class=cF1>U8</span><span class=cF0> *st = </span><span class=cF5>ExtDefault</span><span class=cF0>(filename, </span><span class=cF6>&quot;GR&quot;</span><span class=cF0>), *src = </span><span class=cF5>DCSave</span><span class=cF0>(dc, &amp;size, dcsf_flags);
<a name="l408"></a> </span><span class=cF5>FileWrite</span><span class=cF0>(st, src, size);
<a name="l409"></a> </span><span class=cF5>Free</span><span class=cF0>(st);
<a name="l410"></a> </span><span class=cF5>Free</span><span class=cF0>(src);
<a name="l411"></a>
<a name="l412"></a> </span><span class=cF1>return</span><span class=cF0> size;
<a name="l413"></a>}
<a name="l414"></a>
<a name="l415"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>CDC</span><span class=cF0> *</span><span class=cF5>GRRead</span><span class=cF0>(</span><span class=cF1>U8</span><span class=cF0> *filename, </span><span class=cF9>CTask</span><span class=cF0> *task=</span><span class=cF3>NULL</span><span class=cF0>)
<a name="l416"></a>{</span><span class=cF2>//ZealOS GR File.</span><span class=cF0>
<a name="l417"></a> </span><span class=cF9>CDC</span><span class=cF0> *dc = </span><span class=cF3>NULL</span><span class=cF0>;
<a name="l418"></a> </span><span class=cF1>U8</span><span class=cF0> *st = </span><span class=cF5>ExtDefault</span><span class=cF0>(filename, </span><span class=cF6>&quot;GR&quot;</span><span class=cF0>), *src = </span><span class=cF5>FileRead</span><span class=cF0>(st);
<a name="l419"></a> </span><span class=cF1>if</span><span class=cF0> (src)
<a name="l420"></a> dc = </span><span class=cF5>DCLoad</span><span class=cF0>(src,, task);
<a name="l421"></a> </span><span class=cF5>Free</span><span class=cF0>(src);
<a name="l422"></a> </span><span class=cF5>Free</span><span class=cF0>(st);
<a name="l423"></a>
<a name="l424"></a> </span><span class=cF1>return</span><span class=cF0> dc;
<a name="l425"></a>}
<a name="l426"></a>
<a name="l427"></a>#</span><span class=cF1>help_index</span><span class=cF0> </span><span class=cF6>&quot;Graphics/Sprite;Graphics/GR Files;DolDoc/Output;StdOut/DolDoc&quot;</span><span class=cF0>
<a name="l428"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>DocGR</span><span class=cF0>(</span><span class=cF9>CDoc</span><span class=cF0> *doc=</span><span class=cF3>NULL</span><span class=cF0>, </span><span class=cF1>U8</span><span class=cF0> *filename)
<a name="l429"></a>{</span><span class=cF2>//Put a GR file into a document as asprite.</span><span class=cF0>
<a name="l430"></a> </span><span class=cF9>CDC</span><span class=cF0> *dc = </span><span class=cF5>GRRead</span><span class=cF0>(filename);
<a name="l431"></a> </span><span class=cF9>CSprite</span><span class=cF0> *elems = </span><span class=cF5>DC2Sprite</span><span class=cF0>(dc);
<a name="l432"></a>
<a name="l433"></a> </span><span class=cF5>DocSprite</span><span class=cF0>(doc, elems);
<a name="l434"></a> </span><span class=cF5>Free</span><span class=cF0>(elems);
<a name="l435"></a> </span><span class=cF5>DCDel</span><span class=cF0>(dc);
<a name="l436"></a>}
<a name="l437"></a>
<a name="l438"></a>#</span><span class=cF1>help_index</span><span class=cF0> </span><span class=cF6>&quot;Graphics/Device Contexts;Graphics/Screen&quot;</span><span class=cF0>
<a name="l439"></a></span><span class=cF1>public</span><span class=cF0> </span><span class=cF9>CDC</span><span class=cF0> *</span><span class=cF5>DCScreenCapture</span><span class=cF0>(</span><span class=cF1>Bool</span><span class=cF0> include_zoom=</span><span class=cF3>TRUE</span><span class=cF0>, </span><span class=cF9>CTask</span><span class=cF0> *task=</span><span class=cF3>NULL</span><span class=cF0>)
<a name="l440"></a>{</span><span class=cF2>//Capture screen to a device context.</span><span class=cF0>
<a name="l441"></a> </span><span class=cF9>CDC</span><span class=cF0> *dc;
<a name="l442"></a> </span><span class=cF1>U8</span><span class=cF0> *dst;
<a name="l443"></a>
<a name="l444"></a> </span><span class=cF5>Refresh</span><span class=cF0>(</span><span class=cFE>0</span><span class=cF0>, </span><span class=cF3>FALSE</span><span class=cF0>);
<a name="l445"></a> </span><span class=cF1>if</span><span class=cF0> (include_zoom)
<a name="l446"></a> dc = </span><span class=cF5>DCCopy</span><span class=cF0>(</span><span class=cFB>gr</span><span class=cF0>.screen_image, task);
<a name="l447"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l448"></a> dc = </span><span class=cF5>DCCopy</span><span class=cF0>(</span><span class=cFB>gr</span><span class=cF0>.dc1, task);
<a name="l449"></a> dc-&gt;flags &amp;= ~</span><span class=cF3>DCF_SCREEN_BITMAP</span><span class=cF0>;
<a name="l450"></a> dst = </span><span class=cF5>MAlloc</span><span class=cF0>(dc-&gt;width_internal * dc-&gt;height, task);
<a name="l451"></a></span><span class=cF2>//Pick background color that never occurs. COLOR_INVALID</span><span class=cF0>
<a name="l452"></a> </span><span class=cF5>GrBitMap4ToBitMap8</span><span class=cF0>(dst, dc-&gt;body, </span><span class=cF7>(</span><span class=cF0>dc-&gt;width_internal * dc-&gt;height</span><span class=cF7>)</span><span class=cF0> &gt;&gt; </span><span class=cFE>1</span><span class=cF0>, </span><span class=cF3>COLOR_INVALID</span><span class=cF0>);
<a name="l453"></a> </span><span class=cF5>Free</span><span class=cF0>(dc-&gt;body);
<a name="l454"></a> dc-&gt;body = dst;
<a name="l455"></a>
<a name="l456"></a> </span><span class=cF1>return</span><span class=cF0> dc;
<a name="l457"></a>}
</span></pre></body>
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