public void RenderSubImage(GLBitmap bmp, float[] srcDestList, float scale)
{
SetCurrent();
CheckViewMatrix();
//-------------------------------------------------------------------------------------
// Bind the texture...
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, bmp.GetServerTextureId());
// Set the texture sampler to texture unit to 0
s_texture.SetValue(0);
OnSetVarsBeforeRenderer();
int j = srcDestList.Length;
for (int i = 0; i < j;)
{
float srcLeft = srcDestList[i];
float srcTop = srcDestList[i + 1];
float srcW = srcDestList[i + 2];
float srcH = srcDestList[i + 3];
float targetLeft = srcDestList[i + 4];
float targetTop = srcDestList[i + 5];
i += 6;
//-------------------------------
float srcBottom = srcTop - srcH;
float srcRight = srcLeft + srcW;
float orgBmpW = bmp.Width;
float orgBmpH = bmp.Height;
unsafe
{
float *imgVertices = stackalloc float[5 * 4];
{
imgVertices[0] = targetLeft; imgVertices[1] = targetTop; imgVertices[2] = 0; //coord 0
imgVertices[3] = srcLeft / orgBmpW; imgVertices[4] = srcBottom / orgBmpH; //texture coord 0
//---------------------
imgVertices[5] = targetLeft; imgVertices[6] = targetTop - (srcH * scale); imgVertices[7] = 0; //coord 1
imgVertices[8] = srcLeft / orgBmpW; imgVertices[9] = srcTop / orgBmpH; //texture coord 1
//---------------------
imgVertices[10] = targetLeft + (srcW * scale); imgVertices[11] = targetTop; imgVertices[12] = 0; //coord 2
imgVertices[13] = srcRight / orgBmpW; imgVertices[14] = srcBottom / orgBmpH; //texture coord 2
//---------------------
imgVertices[15] = targetLeft + (srcW * scale); imgVertices[16] = targetTop - (srcH * scale); imgVertices[17] = 0; //coord 3
imgVertices[18] = srcRight / orgBmpW; imgVertices[19] = srcTop / orgBmpH; //texture coord 3
};
a_position.UnsafeLoadMixedV3f(imgVertices, 5);
a_texCoord.UnsafeLoadMixedV2f(imgVertices + 3, 5);
}
GL.DrawElements(BeginMode.TriangleStrip, 4, DrawElementsType.UnsignedShort, indices);
}
}
protected override void OnGLRender(object sender, EventArgs args)
{
//------------------------------------------------------------------------------------------------
float[] vertices =
{
50,100f, //2d coord
1, 0, 0, 0.5f, //r
200f,100f, //2d coord
0, 1, 0, 0.5f, //g
150f,200, //2d corrd
0, 0, 1, 0.5f, //b
};
//---------------------------------------------------------
GL.Clear(ClearBufferMask.ColorBufferBit);
shaderProgram.UseProgram();
//---------------------------------------------------------
u_matrix.SetData(orthoView.data);
//---------------------------------------------------------
//triangle shape
//x,y,r,g,b,a
u_useSolidColor.SetValue(0);
unsafe
{
fixed(float *head = &vertices[0])
{
a_position.UnsafeLoadMixedV2f(head, 5);
a_color.UnsafeLoadMixedV3f(head + 3, 5);
}
}
GL.DrawArrays(BeginMode.Triangles, 0, 6);
//---------------------------------------------------------
//rect shape
//float[] quadVertices3 = CreateRectCoords(250f, 450f, 100f, 100f);
//FillPolygonWithSolidColor(quadVertices3, 6, PixelFarm.Drawing.Color.Red);
//float[] quadVertices2 = CreateRectCoords(250f, 450f, 100f, 100f);
float[] quadVertices2 = CreateRectCoords(260f, 160f, 100f, 100f);
float[] textureCoords = CreateRectTextureCoords();
//FillPolygonWithSolidColor2(quadVertices2, textureCoords, 6, PixelFarm.Drawing.Color.Blue);
FillPolygonWithSolidColor(quadVertices2, 6, PixelFarm.Drawing.Color.Blue);
//---------------------------------------------------------
float[] quadVertices3 = CreateRectCoords(280f, 180f, 100f, 100f);
float[] textureCoords3 = CreateRectTextureCoords();
FillPolygonWithSolidColor2(quadVertices3, textureCoords3, 6, PixelFarm.Drawing.Color.Blue);
//---------------------------------------------------------
float[] quadVertices = CreateRectCoords(250f, 150f, 100f, 100f);
FillPolygonWithSolidColor(quadVertices, 6, PixelFarm.Drawing.Color.Yellow);
//---------------------------------------------------------
// DrawLines(0, 0, 300, 300);
//---------------------------------------------------------
SwapBuffers();
}
internal unsafe void UnsafeDrawSubImages(float *srcDestList, int arrLen, float scale)
{
//-------------------------------------------------------------------------------------
SetVarsBeforeRender();
//-------------------------------------------------------------------------------------
float orgBmpW = _latestBmpW;
float orgBmpH = _latestBmpH;
for (int i = 0; i < arrLen;)
{
float srcLeft = srcDestList[i];
float srcTop = srcDestList[i + 1];
float srcW = srcDestList[i + 2];
float srcH = srcDestList[i + 3];
float targetLeft = srcDestList[i + 4];
float targetTop = srcDestList[i + 5];
i += 6;//***
//-------------------------------
float srcBottom = srcTop + srcH;
float srcRight = srcLeft + srcW;
unsafe
{
if (!_latestBmpYFlipped)
{
float *imgVertices = stackalloc float[5 * 4];
{
imgVertices[0] = targetLeft; imgVertices[1] = targetTop; imgVertices[2] = 0; //coord 0 (left,top)
imgVertices[3] = srcLeft / orgBmpW; imgVertices[4] = srcBottom / orgBmpH; //texture coord 0 (left,bottom)
//---------------------
imgVertices[5] = targetLeft; imgVertices[6] = targetTop - (srcH * scale); imgVertices[7] = 0; //coord 1 (left,bottom)
imgVertices[8] = srcLeft / orgBmpW; imgVertices[9] = srcTop / orgBmpH; //texture coord 1 (left,top)
//---------------------
imgVertices[10] = targetLeft + (srcW * scale); imgVertices[11] = targetTop; imgVertices[12] = 0; //coord 2 (right,top)
imgVertices[13] = srcRight / orgBmpW; imgVertices[14] = srcBottom / orgBmpH; //texture coord 2 (right,bottom)
//---------------------
imgVertices[15] = targetLeft + (srcW * scale); imgVertices[16] = targetTop - (srcH * scale); imgVertices[17] = 0; //coord 3 (right, bottom)
imgVertices[18] = srcRight / orgBmpW; imgVertices[19] = srcTop / orgBmpH; //texture coord 3 (right,top)
}
a_position.UnsafeLoadMixedV3f(imgVertices, 5);
a_texCoord.UnsafeLoadMixedV2f(imgVertices + 3, 5);
}
else
{
float *imgVertices = stackalloc float[5 * 4];
{
imgVertices[0] = targetLeft; /**/ imgVertices[1] = targetTop; /**/ imgVertices[2] = 0; //coord 0 (left,top)
imgVertices[3] = srcLeft / orgBmpW; /**/ imgVertices[4] = srcTop / orgBmpH; /**/ //texture coord 0 (left,top)
//---------------------
imgVertices[5] = targetLeft; /**/ imgVertices[6] = targetTop - (srcH * scale); /**/ imgVertices[7] = 0; //coord 1 (left,bottom)
imgVertices[8] = srcLeft / orgBmpW; /**/ imgVertices[9] = srcBottom / orgBmpH; /**/ //texture coord 1 (left,bottom)
//---------------------
imgVertices[10] = targetLeft + (srcW * scale); /**/ imgVertices[11] = targetTop; /**/ imgVertices[12] = 0; //coord 2 (right,top)
imgVertices[13] = srcRight / orgBmpW; /**/ imgVertices[14] = srcTop / orgBmpH; //texture coord 2 (right,top)
//---------------------
imgVertices[15] = targetLeft + (srcW * scale); /**/ imgVertices[16] = targetTop - (srcH * scale); /**/ imgVertices[17] = 0; //coord 3 (right, bottom)
imgVertices[18] = srcRight / orgBmpW; /**/ imgVertices[19] = srcBottom / orgBmpH; //texture coord 3 (right,bottom)
}
a_position.UnsafeLoadMixedV3f(imgVertices, 5);
a_texCoord.UnsafeLoadMixedV2f(imgVertices + 3, 5);
}
}
GL.DrawElements(BeginMode.TriangleStrip, 4, DrawElementsType.UnsignedShort, indices);
}
}