//
// FNA3D_ResolveTarget
//
public static void FNA3D_ResolveTarget(IntPtr device,
ref FNA3D_RenderTargetBinding renderTarget)
{
if (renderTarget.multiSampleCount > 0)
{
// no support for multisampling; see FNA3D_SetRenderTargets
throw new PlatformNotSupportedException();
}
if (renderTarget.levelCount > 1)
{
int attachmentType = GLES20.GL_TEXTURE_2D;
if (renderTarget.type != /* FNA3D_RENDERTARGET_TYPE_2D */ 0)
{
attachmentType = GLES20.GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ renderTarget.data2;
}
int texture = (int)renderTarget.texture;
var renderer = Renderer.Get(device);
renderer.Send(false, () =>
{
int textureUnit = GLES20.GL_TEXTURE0 + renderer.TextureUnits - 1;
GLES20.glActiveTexture(textureUnit);
GLES20.glBindTexture(attachmentType, texture);
GLES20.glGenerateMipmap(attachmentType);
var state = (State)renderer.UserData;
if (state.TextureOnLastUnit != 0)
{
GLES20.glBindTexture(attachmentType, state.TextureOnLastUnit);
}
});
}
}
public static extern void FNA3D_ResolveTarget(
IntPtr device,
ref FNA3D_RenderTargetBinding target
);
//
// FNA3D_SetRenderTargets
//
public static unsafe void FNA3D_SetRenderTargets(IntPtr device,
FNA3D_RenderTargetBinding *renderTargets,
int numRenderTargets,
IntPtr depthStencilBuffer,
DepthFormat depthFormat,
byte preserveContents)
{
var renderTargetsCopy = new FNA3D_RenderTargetBinding[numRenderTargets];
for (int i = 0; i < numRenderTargets; i++)
{
renderTargetsCopy[i] = renderTargets[i];
}
var renderer = Renderer.Get(device);
renderer.Send(false, () =>
{
var state = (State)renderer.UserData;
if (state.TargetFramebuffer == 0)
{
var id = new int[1];
GLES20.glGenFramebuffers(1, id, 0);
if ((state.TargetFramebuffer = id[0]) == 0)
{
return;
}
}
GLES20.glBindFramebuffer(GLES30.GL_DRAW_FRAMEBUFFER,
state.TargetFramebuffer);
int attachmentIndex = GLES20.GL_COLOR_ATTACHMENT0;
foreach (var renderTarget in renderTargetsCopy)
{
if (renderTarget.colorBuffer != IntPtr.Zero)
{
// a color buffer is only created if a non-zero result
// from FNA3D_GetMaxMultiSampleCount, which we never do
throw new PlatformNotSupportedException();
/*GLES20.glFramebufferRenderbuffer(
* GLES20.GL_DRAW_FRAMEBUFFER, attachmentIndex,
* GLES20.GL_RENDERBUFFER, (int) renderTarget.colorBuffer);*/
}
else
{
int attachmentType = GLES20.GL_TEXTURE_2D;
if (renderTarget.type != /* FNA3D_RENDERTARGET_TYPE_2D */ 0)
{
attachmentType = GLES20.GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ renderTarget.data2;
}
GLES20.glFramebufferTexture2D(
GLES30.GL_DRAW_FRAMEBUFFER, attachmentIndex,
attachmentType, (int)renderTarget.texture, 0);
}
attachmentIndex++;
}
int lastAttachmentPlusOne = state.ActiveAttachments;
state.ActiveAttachments = attachmentIndex;
while (attachmentIndex < lastAttachmentPlusOne)
{
GLES20.glFramebufferRenderbuffer(
GLES30.GL_DRAW_FRAMEBUFFER, attachmentIndex++,
GLES20.GL_RENDERBUFFER, 0);
}
GLES20.glFramebufferRenderbuffer(
GLES30.GL_DRAW_FRAMEBUFFER, GLES30.GL_DEPTH_STENCIL_ATTACHMENT,
GLES20.GL_RENDERBUFFER, (int)depthStencilBuffer);
state.RenderToTexture = true;
});
}