glReadPixels fails on RenderBuffer

John_H_4 · ‎11-25-2014

This is a re-post using the requested layout

System Setup Information:
-----------------------------------------

System Used: Dell Alienware 17
CPU SKU: Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz
GPU SKU: HD4600
Processor Line:
System BIOS Version: Alienware A01
CMOS settings:
Graphics Driver Version: 10.18.10.3960
GOP/VBIOS Version:
Operating System: Windows 8.1 64bit
OS Version: 6.2.9200
API: OpenGL
Occurs on non-Intel GPUs?: NO

Steps to Reproduce:
-------------------------------
Setup the Frame Buffer

// Create the FBO

glGenFramebuffers(1, @fFBOHandle);

glBindFramebuffer(GL_FRAMEBUFFER, fFBOHandle);

// Create the texture object for the primitive information buffer

glGenRenderBuffers(fColBufSize, @fColorBuffer[0]);

for I := 0 to fColBufSize-1 do

Begin

glBindRenderBuffer(GL_RENDERBUFFER, fColorBuffer);

glRenderBufferStorage( GL_RENDERBUFFER, GL_RGBA32F, SizeX, SizeY );

glFramebufferRenderBuffer (GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + I, GL_RENDERBUFFER, fColorBuffer );

fBuffer := GL_COLOR_ATTACHMENT0 + I;

end;

// depth

if fIncDepthBuffer then

Begin

glGenRenderBuffers(1, @fDepthBuff);

glBindRenderBuffer(GL_RENDERBUFFER, fDepthBuff);

glRenderBufferStorage( GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, SizeX, SizeY );

glFramebufferRenderBuffer(GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, fDepthBuff);

end;

glDrawBuffers(fColBufSize, @fBuffer[0]);

// Verify that the FBO is correct

aStatus := glCheckFramebufferStatus(GL_FRAMEBUFFER);

CheckForGLErrors('Float Buffer Set Size');

// Restore the default framebuffer

glReadBuffer(GL_NONE); //for older hardware

glBindRenderbuffer(GL_RENDERBUFFER, 0);

glBindFramebuffer(GL_FRAMEBUFFER, 0);

Read the Pixels from the FramBuffer. The PixelID is a local array and X,Y is the mouse location.

glBindFramebuffer(GL_READ_FRAMEBUFFER, fFBOHandle);

glReadBuffer(GL_COLOR_ATTACHMENT0);

glReadPixels(x, y, 1, 1, GL_RGBA, GL_FLOAT, @PixelID[0]);

glReadBuffer(GL_NONE);

Expected Results:
-------------------------------

glReadPixels should return data from the current glReadBuffer without an error.

Actual Results:
-------------------------------

The glReadPixels call generates and OpenGL debug message (Source: OpenGL ; Type : Error ; Severity : HIGH ; Message : Error has been generated. GL error GL_INVALID_OPERATION) and an OpenGL Error 1282 is on the OpenGL error stack.

No errors exist on the OpenGLK Error stack before the glReadPixels.

Additional Information:
-------------------------------

DXDiag Report

Time of this report: 11/26/2014, 06:49:50

Machine name: DBS040

Operating System: Windows 8.1 Pro 64-bit (6.3, Build 9600) (9600.winblue_r3.140827-1500)

Language: English (Regional Setting: English)

System Manufacturer: Alienware

System Model: Alienware 17

BIOS: A01

Processor: Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz (8 CPUs), ~2.7GHz

Memory: 32768MB RAM

Available OS Memory: 32486MB RAM

Page File: 10880MB used, 54372MB available

Windows Dir: C:\WINDOWS

DirectX Version: DirectX 11

DX Setup Parameters: Not found

User DPI Setting: 96 DPI (100 percent)

System DPI Setting: 96 DPI (100 percent)

DWM DPI Scaling: Disabled

DxDiag Version: 6.03.9600.16384 64bit Unicode

---------------

Display Devices

---------------

Card name: Intel(R) HD Graphics 4600

Manufacturer: Intel Corporation

Chip type: Intel(R) HD Graphics Family

DAC type: Internal

Device Type: Full Device

Device Key: Enum\PCI\VEN_8086&DEV_0416&SUBSYS_05AA1028&REV_06

Display Memory: 1792 MB

Dedicated Memory: 32 MB

Shared Memory: 1760 MB

Current Mode: 1920 x 1080 (32 bit) (60Hz)

Monitor Name: Generic PnP Monitor

Monitor Model: unknown

Monitor Id: LGD02DA

Native Mode: 1920 x 1080(p) (60.012Hz)

Output Type: Internal

Driver Name: igdumdim64.dll,igd10iumd64.dll,igd10iumd64.dll,igdumdim32,igd10iumd32,igd10iumd32

Driver File Version: 10.18.0010.3960 (English)

Driver Version: 10.18.10.3960

DDI Version: 11.1

Feature Levels: 11.1,11.0,10.1,10.0,9.3,9.2,9.1

Driver Model: WDDM 1.3

Graphics Preemption: Primitive

Compute Preemption: Thread group

Miracast: Supported

Hybrid Graphics GPU: Integrated

Power P-states: Not Supported

Driver Attributes: Final Retail

Driver Date/Size: 10/3/2014 17:36:50, 24185400 bytes

WHQL Logo'd: Yes

WHQL Date Stamp:

Device Identifier: {D7B78E66-4756-11CF-E362-A725BBC2C435}

Vendor ID: 0x8086

Device ID: 0x0416

SubSys ID: 0x05AA1028

Revision ID: 0x0006

Driver Strong Name: oem27.inf:5f63e534dd929195:iHSWM_w81:10.18.10.3960:pci\ven_8086&dev_0416

Rank Of Driver: 00DA2001

Video Accel: ModeMPEG2_A ModeMPEG2_C ModeWMV9_C ModeVC1_C

DXVA2 Modes: DXVA2_ModeMPEG2_VLD DXVA2_ModeMPEG2_IDCT DXVA2_ModeWMV9_IDCT DXVA2_ModeVC1_IDCT DXVA2_ModeH264_VLD_NoFGT

Deinterlace Caps: {BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering

{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch

{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend

{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering

{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch

{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend

{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(YV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering

{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch

{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(YV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend

{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(NV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering

{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch

{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(NV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend

{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(IMC1,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering

{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(IMC1,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch

{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC1,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend

{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(IMC2,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering

{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(IMC2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch

{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend

{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(IMC3,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering

{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(IMC3,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch

{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC3,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend

{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(IMC4,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering

{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(IMC4,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch

{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC4,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend

D3D9 Overlay: Supported

DXVA-HD: Supported

DDraw Status: Enabled

D3D Status: Enabled

AGP Status: Enabled

Michael_C_Intel2 · ‎12-01-2014

Thanks John. I have created an internal ticket and am talking with our OpenGL driver developers. I will update you once they have had a chance to look at the issue

John_H_4 · ‎12-09-2014

Further to this problem, I have found that when I try and rebuild the buffers after a WMSize message (ie window size change) the problem will get worse.

The 1282 error is generated continuously for every glReadPixels.

Any feedback on this? Would you like a copy of the executable?