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);
}
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 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.
}
}
