static bool arglPixelBufferDataUpload(ARGL_CONTEXT_SETTINGS contextSettings, byte[] bufDataPtr)
{
if (contextSettings == null)
{
return(false);
}
if (contextSettings.textureObjectsHaveBeenSetup || contextSettings.textureGeometryHasBeenSetup || contextSettings.pixSize == 0)
{
return(false);
}
GL1.ActiveTexture(All1.Texture0);
GL1.BindTexture(All1.Texture2D, contextSettings.texture);
GL1.PixelStore(All1.UnpackAlignment, (((contextSettings.bufSizeX * contextSettings.pixSize) & 0x3) == 0 ? 4 : 1));
if (contextSettings.bufSizeIsTextureSize)
{
GL1.TexImage2D(All1.Texture2D, 0, (OpenTK.Graphics.ES11.All)contextSettings.pixIntFormat, contextSettings.textureSizeX, contextSettings.textureSizeY, 0, (All1)contextSettings.pixFormat, (All1)contextSettings.pixType, bufDataPtr);
}
else
{
// Request OpenGL allocate memory internally for a power-of-two texture of the appropriate size.
// Then send the NPOT-data as a subimage.
GL1.TexImage2D(All1.Texture2D, 0, (OpenTK.Graphics.ES11.All)contextSettings.pixIntFormat, contextSettings.textureSizeX, contextSettings.textureSizeY, 0, (All1)contextSettings.pixFormat, (All1)contextSettings.pixType, IntPtr.Zero);
GL1.TexSubImage2D(All1.Texture2D, 0, 0, 0, contextSettings.bufSizeX, contextSettings.bufSizeY, (All1)contextSettings.pixFormat, (All1)contextSettings.pixType, bufDataPtr);
}
contextSettings.textureDataReady = true;
return(true);
}
// Set up the texture objects.
static bool arglSetupTextureObjects(ARGL_CONTEXT_SETTINGS contextSettings)
{
int textureWrapMode;
// Delete previous textures, unless this is our first time here.
if (contextSettings.textureObjectsHaveBeenSetup)
{
GL1.ActiveTexture(All1.Texture0);
GL1.BindTexture(All1.Texture2D, 0);
GL1.DeleteTextures(1, ref contextSettings.texture);
contextSettings.textureObjectsHaveBeenSetup = false;
}
GL1.GenTextures(1, out contextSettings.texture);
GL1.ActiveTexture(All1.Texture0);
GL1.BindTexture(All1.Texture2D, contextSettings.texture);
GL1.TexParameterx(All1.Texture2D, All1.TextureMinFilter, (int)All1.Linear);
GL1.TexParameterx(All1.Texture2D, All1.TextureMagFilter, (int)All1.Linear);
// Decide whether we can use GL_CLAMP_TO_EDGE.
//if (arglGLCapabilityCheck(0x0120, (unsigned char *)"GL_SGIS_texture_edge_clamp")) {
textureWrapMode = (int)All1.ClampToEdge;
//} else {
// textureWrapMode = (int)All1.Repeat;
//}
GL1.TexParameterx(All1.Texture2D, All1.TextureWrapS, textureWrapMode);
GL1.TexParameterx(All1.Texture2D, All1.TextureWrapT, textureWrapMode);
contextSettings.textureObjectsHaveBeenSetup = true;
return(true);
}
public static ARGL_CONTEXT_SETTINGS arglSetupForCurrentContext(ARParam cparam, AR_PIXEL_FORMAT pixelFormat)
{
ARGL_CONTEXT_SETTINGS contextSettings;
contextSettings = new ARGL_CONTEXT_SETTINGS();
contextSettings.arParam = cparam; // Copy it.
contextSettings.zoom = 1.0f;
// Because of calloc used above, these are redundant.
//contextSettings.rotate90 = contextSettings.flipH = contextSettings.flipV = false;
//contextSettings.disableDistortionCompensation = false;
//contextSettings.textureGeometryHasBeenSetup = false;
//contextSettings.textureObjectsHaveBeenSetup = false;
//contextSettings.textureDataReady = false;
// This sets pixIntFormat, pixFormat, pixType, pixSize, and resets textureDataReady.
arglPixelFormatSet(contextSettings, pixelFormat);
// Set pixel buffer sizes to incoming image size, by default.
if (!arglPixelBufferSizeSet(contextSettings, cparam.xsize, cparam.ysize))
{
Debug.Print("ARGL: Error setting pixel buffer size.\n");
contextSettings = null;
return(null);
}
return(contextSettings);
}
static bool arglGetRotate90(ARGL_CONTEXT_SETTINGS contextSettings)
{
if (contextSettings == null)
{
return(false);
}
return(contextSettings.rotate90);
}
static void arglSetFlipV(ARGL_CONTEXT_SETTINGS contextSettings, bool flipV)
{
if (contextSettings == null)
{
return;
}
contextSettings.flipV = flipV;
}
static bool arglGetFlipV(ARGL_CONTEXT_SETTINGS contextSettings)
{
if (contextSettings == null)
{
return(false);
}
return(contextSettings.flipV);
}
static void arglSetRotate90(ARGL_CONTEXT_SETTINGS contextSettings, bool rotate90)
{
if (contextSettings == null)
{
return;
}
contextSettings.rotate90 = rotate90;
}
static bool arglDistortionCompensationGet(ARGL_CONTEXT_SETTINGS contextSettings, ref bool enable)
{
if (contextSettings == null || !enable)
{
return(false);
}
enable = contextSettings.disableDistortionCompensation;
return(true);
}
static bool arglDistortionCompensationSet(ARGL_CONTEXT_SETTINGS contextSettings, bool enable)
{
if (contextSettings == null)
{
return(false);
}
contextSettings.disableDistortionCompensation = !enable;
return(arglSetupTextureGeometry(contextSettings));
}
static bool arglGetPixelZoom(ARGL_CONTEXT_SETTINGS contextSettings, ref float zoom)
{
if (contextSettings == null)
{
return(false);
}
zoom = contextSettings.zoom;
return(true);
}
static bool arglSetPixelZoom(ARGL_CONTEXT_SETTINGS contextSettings, float zoom)
{
if (contextSettings == null)
{
return(false);
}
contextSettings.zoom = zoom;
// Changing the zoom invalidates the geometry, so set it up.
return(arglSetupTextureGeometry(contextSettings));
}
static bool arglPixelFormatGet(ARGL_CONTEXT_SETTINGS contextSettings, ref AR_PIXEL_FORMAT format, ref int size)
{
if (contextSettings == null)
{
return(false);
}
format = contextSettings.format;
size = contextSettings.pixSize;
return(true);
}
static void arglCleanup(ARGL_CONTEXT_SETTINGS contextSettings)
{
if (contextSettings == null)
{
return; // Sanity check.
}
if (contextSettings.textureObjectsHaveBeenSetup)
{
GL1.ActiveTexture(All1.Texture0);
GL1.BindTexture(All1.Texture2D, 0);
GL1.DeleteTextures(1, ref contextSettings.texture);
}
if (contextSettings.textureGeometryHasBeenSetup)
{
GL1.DeleteBuffers(1, ref contextSettings.t2bo);
GL1.DeleteBuffers(1, ref contextSettings.v2bo);
}
contextSettings = null;
}
static bool arglPixelBufferSizeSet(ARGL_CONTEXT_SETTINGS contextSettings, int bufWidth, int bufHeight)
{
if (contextSettings == null)
{
return(false);
}
// Check texturing capabilities (sets textureSizeX, textureSizeY, textureSizeMax).
GL1.GetInteger(All1.MaxTextureSize, out contextSettings.textureSizeMax);
if (bufWidth > contextSettings.textureSizeMax || bufHeight > contextSettings.textureSizeMax)
{
Debug.Print("Error: ARGL: Your OpenGL implementation and/or hardware's texturing capabilities are insufficient.\n");
return(false);
}
contextSettings.textureSizeX = bufWidth;
contextSettings.textureSizeY = bufHeight;
contextSettings.bufSizeIsTextureSize = true;
// Changing the size of the data we'll be receiving invalidates the geometry, so set it up.
return(arglSetupTextureGeometry(contextSettings));
}
static bool arglPixelBufferSizeGet(ARGL_CONTEXT_SETTINGS contextSettings, ref int bufWidth, ref int bufHeight)
{
if (contextSettings == null)
{
return(false);
}
if (contextSettings.textureGeometryHasBeenSetup)
{
return(false);
}
if (contextSettings.bufSizeIsTextureSize)
{
bufWidth = contextSettings.textureSizeX;
bufHeight = contextSettings.textureSizeY;
}
else
{
bufWidth = contextSettings.bufSizeX;
bufHeight = contextSettings.bufSizeY;
}
return(true);
}
static bool arglPixelFormatSet(ARGL_CONTEXT_SETTINGS contextSettings, AR_PIXEL_FORMAT format)
{
if (contextSettings == null)
{
return(false);
}
switch (format)
{
case AR_PIXEL_FORMAT.AR_PIXEL_FORMAT_Rgba:
contextSettings.pixIntFormat = (int)All1.Rgba;
contextSettings.pixFormat = (int)All1.Rgba;
contextSettings.pixType = (int)All1.UnsignedByte;
contextSettings.pixSize = 4;
break;
case AR_PIXEL_FORMAT.AR_PIXEL_FORMAT_Bgra: // Windows.
contextSettings.pixIntFormat = (int)All1.Rgba;
contextSettings.pixFormat = (int)All1.Bgra;
contextSettings.pixType = (int)All1.UnsignedByte;
contextSettings.pixSize = 4;
break;
case AR_PIXEL_FORMAT.AR_PIXEL_FORMAT_ABGR: // SGI.
contextSettings.pixIntFormat = (int)All1.Rgba;
contextSettings.pixFormat = (int)All1.AbgrExt;
contextSettings.pixType = (int)All1.UnsignedByte;
contextSettings.pixSize = 4;
break;
case AR_PIXEL_FORMAT.AR_PIXEL_FORMAT_ARGB: // Mac.
contextSettings.pixIntFormat = (int)All1.Rgba;
contextSettings.pixFormat = (int)All1.Bgra;
contextSettings.pixType = (int)All1.UnsignedInt8888;
contextSettings.pixSize = 4;
break;
case AR_PIXEL_FORMAT.AR_PIXEL_FORMAT_RGB:
contextSettings.pixIntFormat = (int)All1.Rgb;
contextSettings.pixFormat = (int)All1.Rgb;
contextSettings.pixType = (int)All1.UnsignedByte;
contextSettings.pixSize = 3;
break;
case AR_PIXEL_FORMAT.AR_PIXEL_FORMAT_BGR:
contextSettings.pixIntFormat = (int)All1.Rgb;
contextSettings.pixFormat = (int)All1.Rgb;
contextSettings.pixType = (int)All1.UnsignedByte;
contextSettings.pixSize = 3;
break;
default:
return(false);
break;
}
contextSettings.format = format;
contextSettings.textureDataReady = false;
if (!arglSetupTextureObjects(contextSettings))
{
return(false);
}
return(true);
}
static void arglDispImageStateful(ARGL_CONTEXT_SETTINGS contextSettings)
{
int texEnvModeSave;
int i;
if (contextSettings == null)
{
return;
}
if (contextSettings.textureObjectsHaveBeenSetup)
{
return;
}
if (contextSettings.textureGeometryHasBeenSetup)
{
return;
}
if (contextSettings.textureDataReady)
{
return;
}
GL1.ActiveTexture(All1.Texture0);
GL1.MatrixMode(All1.Texture);
GL1.LoadIdentity();
GL1.MatrixMode(All1.Modelview);
GL1.BindTexture(All1.Texture2D, contextSettings.texture);
GL1.GetTexEnv(All1.TextureEnv, All1.TextureEnvMode, out texEnvModeSave); // Save GL texture environment mode.
if (texEnvModeSave != (int)All1.Replace)
{
GL1.TexEnv(All1.TextureEnv, All1.TextureEnvMode, (int)All1.Replace);
}
GL1.Enable(All1.Texture2D);
GL1.ClientActiveTexture(All1.Texture0);
GL1.BindBuffer(All1.ArrayBuffer, contextSettings.t2bo);
GL1.TexCoordPointer(2, All1.Float, 0, IntPtr.Zero);
GL1.EnableClientState(All1.TextureCoordArray);
GL1.BindBuffer(All1.ArrayBuffer, contextSettings.v2bo);
GL1.VertexPointer(2, All1.Float, 0, IntPtr.Zero);
GL1.EnableClientState(All1.VertexArray);
GL1.DisableClientState(All1.NormalArray);
if (contextSettings.disableDistortionCompensation)
{
GL1.DrawArrays(All1.TriangleStrip, 0, 4);
}
else
{
for (i = 0; i < 20; i++)
{
GL1.DrawArrays(All1.TriangleStrip, i * 42, 42);
}
}
GL1.BindBuffer(All1.ArrayBuffer, 0);
GL1.DisableClientState(All1.VertexArray);
GL1.DisableClientState(All1.TextureCoordArray);
GL1.Disable(All1.Texture2D);
if (texEnvModeSave != (int)All1.Replace)
{
GL1.TexEnv(All1.TextureEnv, All1.TextureEnvMode, texEnvModeSave); // Restore GL texture environment mode.
}
}
public static bool arglSetupTextureGeometry(ARGL_CONTEXT_SETTINGS contextSettings)
{
float ty_prev, tx, ty;
float y_prev, x, y;
double x1, x2, y1, y2;
float xx1, xx2, yy1, yy2;
int i, j;
int vertexCount, t2count, v2count;
float imageSizeX, imageSizeY;
float zoom;
// Delete previous geometry, unless this is our first time here.
if (contextSettings.textureGeometryHasBeenSetup)
{
GL1.DeleteBuffers(1, ref contextSettings.t2bo);
GL1.DeleteBuffers(1, ref contextSettings.v2bo);
contextSettings.textureGeometryHasBeenSetup = false;
}
// Set up the geometry for the surface which we will texture upon.
imageSizeX = (float)contextSettings.arParam.xsize;
imageSizeY = (float)contextSettings.arParam.ysize;
zoom = contextSettings.zoom;
if (contextSettings.disableDistortionCompensation)
{
vertexCount = 4;
}
else
{
vertexCount = 840; // 20 rows of 2 x 21 vertices.
}
contextSettings.t2 = new float[2 * vertexCount];
contextSettings.v2 = new float[2 * vertexCount];
t2count = v2count = 0;
if (contextSettings.disableDistortionCompensation)
{
contextSettings.t2[t2count++] = 0.0f; // Top-left.
contextSettings.t2[t2count++] = 0.0f;
contextSettings.v2[v2count++] = 0.0f;
contextSettings.v2[v2count++] = imageSizeY * zoom;
contextSettings.t2[t2count++] = 0.0f; // Bottom-left.
contextSettings.t2[t2count++] = imageSizeY / (float)contextSettings.textureSizeY;
contextSettings.v2[v2count++] = 0.0f;
contextSettings.v2[v2count++] = 0.0f;
contextSettings.t2[t2count++] = imageSizeX / (float)contextSettings.textureSizeX; // Top-right.
contextSettings.t2[t2count++] = 0.0f;
contextSettings.v2[v2count++] = imageSizeX * zoom;
contextSettings.v2[v2count++] = imageSizeY * zoom;
contextSettings.t2[t2count++] = imageSizeX / (float)contextSettings.textureSizeX; // Bottom-right.
contextSettings.t2[t2count++] = imageSizeY / (float)contextSettings.textureSizeY;
contextSettings.v2[v2count++] = imageSizeX * zoom;
contextSettings.v2[v2count++] = 0.0f;
}
else
{
y = 0.0f;
ty = 0.0f;
for (j = 1; j <= 20; j++) // Do 20 rows of triangle strips.
{
y_prev = y;
ty_prev = ty;
y = imageSizeY * (float)j / 20.0f;
ty = y / (float)contextSettings.textureSizeY;
for (i = 0; i <= 20; i++) // 21 columns of triangle strip vertices, 2 vertices per column.
{
x = imageSizeX * (float)i / 20.0f;
tx = x / (float)contextSettings.textureSizeX;
arParamObserv2Ideal(contextSettings.arParam.dist_factor, (double)x, (double)y_prev, out x1, out y1, contextSettings.arParam.dist_function_version);
arParamObserv2Ideal(contextSettings.arParam.dist_factor, (double)x, (double)y, out x2, out y2, contextSettings.arParam.dist_function_version);
xx1 = (float)x1 * zoom;
yy1 = (imageSizeY - (float)y1) * zoom;
xx2 = (float)x2 * zoom;
yy2 = (imageSizeY - (float)y2) * zoom;
contextSettings.t2[t2count++] = tx; // Top.
contextSettings.t2[t2count++] = ty_prev;
contextSettings.v2[v2count++] = xx1;
contextSettings.v2[v2count++] = yy1;
contextSettings.t2[t2count++] = tx; // Bottom.
contextSettings.t2[t2count++] = ty;
contextSettings.v2[v2count++] = xx2;
contextSettings.v2[v2count++] = yy2;
} // columns.
} // rows.
}
// Now setup VBOs.
GL1.GenBuffers(1, out contextSettings.t2bo);
GL1.GenBuffers(1, out contextSettings.v2bo);
GL1.BindBuffer(All1.ArrayBuffer, contextSettings.t2bo);
GL1.BufferData(All1.ArrayBuffer, new IntPtr((sizeof(float) * 2 * vertexCount)), contextSettings.t2, All1.StaticDraw);
GL1.BindBuffer(All1.ArrayBuffer, contextSettings.v2bo);
GL1.BufferData(All1.ArrayBuffer, new IntPtr((sizeof(float) * 2 * vertexCount)), contextSettings.v2, All1.StaticDraw);
GL1.BindBuffer(All1.ArrayBuffer, 0);
contextSettings.textureGeometryHasBeenSetup = true;
return(true);
}
static void arglDispImage(ARGL_CONTEXT_SETTINGS contextSettings)
{
float left, right, bottom, top;
bool lightingSave;
bool depthTestSave;
if (contextSettings == null)
{
return;
}
// Prepare an orthographic projection, set camera position for 2D drawing, and save GL state.
GL1.MatrixMode(All1.Projection);
GL1.PushMatrix();
GL1.LoadIdentity();
if (contextSettings.rotate90)
{
GL1.Rotate(90.0f, 0.0f, 0.0f, -1.0f);
}
if (contextSettings.flipV)
{
bottom = (float)contextSettings.arParam.ysize;
top = 0.0f;
}
else
{
bottom = 0.0f;
top = (float)contextSettings.arParam.ysize;
}
if (contextSettings.flipH)
{
left = (float)contextSettings.arParam.xsize;
right = 0.0f;
}
else
{
left = 0.0f;
right = (float)contextSettings.arParam.xsize;
}
GL1.Ortho(left, right, bottom, top, -1.0f, 1.0f);
GL1.MatrixMode(All1.Modelview);
GL1.PushMatrix();
GL1.LoadIdentity();
lightingSave = GL1.IsEnabled(All1.Lighting); // Save enabled state of lighting.
if (lightingSave == true)
{
GL1.Disable(All1.Lighting);
}
depthTestSave = GL1.IsEnabled(All1.DepthTest); // Save enabled state of depth test.
if (depthTestSave == true)
{
GL1.Disable(All1.DepthTest);
}
arglDispImageStateful(contextSettings);
if (depthTestSave == true)
{
GL1.Enable(All1.DepthTest); // Restore enabled state of depth test.
}
if (lightingSave == true)
{
GL1.Enable(All1.Lighting); // Restore enabled state of lighting.
}
// Restore previous projection & camera position.
GL1.MatrixMode(All1.Projection);
GL1.PopMatrix();
GL1.MatrixMode(All1.Modelview);
GL1.PopMatrix();
// Report any errors we generated.
int err = (int)GL1.GetError();
while (err != (int)All1.NoError)
{
Debug.Print("ARGL: GL error 0x%04X\n", (int)err);
}
}