TDA4VM: RE: TDA4VM: OpenGL external texture input support on SDK9.2

Hello,

We have tested the support for External EGL Images on all releases. Can you elaborate on your application? Are you using the utilities provided in our Vision Apps project? Or have you built your own code from this?

If there is an issue with the state of OpenGL, I would assume there is a bug in the OpenGL code. Is there a way to isolate this code within your application? Are the dma-buf IDs correct and the EGL External Textures correctly constructed? If you could check by adding an glGetError and ensuring it is not reporting back any issue with the state? Similarly with eglGetError?

Thanks,

Erick

Hi Erick,

Thanks for replay! First,we built our own code without using Vision Apps project ! But our code have be varifired in another tda4 SDK 0900, everthing is ok! and our code also have be test at v9m,Ambarella..;
I use eglGetError() function, return 0, that means GL_NO_ERROR; The Code and log as follow:

Code:

enVTRet VTGLR_Image2DRender_ExtTex(GLuint Tex, stVTDScrnWin win)
{
LogHL("=======================================aaa");
glm::mat4 Identity(1.0f);
glViewport(win.x, 1080- win.height - win.y, win.width, win.height);
LogHL("=======================================bbb");
glEnable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
LogHL("=======================================ccc");
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
//glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE);
LogHL("=======================================ddd");
glUseProgram(AVMShader_GetCommonProg(SHADER_PROG_EXT));
LogHL("=======================================eee");
glBindFramebuffer(GL_FRAMEBUFFER, 0);
LogHL("=======================================222");
glBindVertexArray(VAO);
glUniform1i(glGetUniformLocation(AVMShader_GetCommonProg(SHADER_PROG_EXT), "myTexture"), 0);
LogHL("=======================================333");
glUniformMatrix4fv(glGetUniformLocation(AVMShader_GetCommonProg(SHADER_PROG_EXT), "mvp"), 1, GL_FALSE, glm::value_ptr(Identity));
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_EXTERNAL_OES, Tex);
LogHL("=======================================444");
#if 0
/* vertex array */
glEnableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, VrtVBO);
glVertexAttribPointer(0, 3, GL_FLOAT, 0, 0, 0);

/* texcoord array */
glEnableVertexAttribArray(1);
glBindBuffer(GL_ARRAY_BUFFER, TexVBO);
glVertexAttribPointer(1, 2, GL_FLOAT, 0, 0, 0);
#endif
LogHL("=======================================555");
LogHL("=======================================VrtNum is %d",VrtNum);
GLenum error;
error = glGetError();
LogHL("-------------OpenGL Error: %d" ,error);

glDrawArrays(GL_TRIANGLES, 0, VrtNum);
LogHL("=======================================666");

LogHL("=======================================777");
return VTRET_OK;
}

Log:
[0580][VTGLR_Image2DRender_]=======================================000
[0582][VTGLR_Image2DRender_]=======================================111
[0583][VTGLR_Image2DRender_]=======================================CameraTex_[VT_CAMERA_FRONT][0]=2
[0529][VTGLR_Image2DRender_ExtTex]=======================================aaa
[0532][VTGLR_Image2DRender_ExtTex]=======================================bbb
[0535][VTGLR_Image2DRender_ExtTex]=======================================ccc
[0538][VTGLR_Image2DRender_ExtTex]=======================================ddd
Enter Render Program object address: 0xffff689cc960
[0540][VTGLR_Image2DRender_ExtTex]=======================================eee
[0542][VTGLR_Image2DRender_ExtTex]=======================================222
Enter Render Program object address: 0xffff689cc960
[0545][VTGLR_Image2DRender_ExtTex]=======================================333
Enter Render Program object address: 0xffff689cc960
[0549][VTGLR_Image2DRender_ExtTex]=======================================444
[0561][VTGLR_Image2DRender_ExtTex]=======================================555
[0562][VTGLR_Image2DRender_ExtTex]=======================================VrtNum is 6
[0565][VTGLR_Image2DRender_ExtTex]-------------OpenGL Error: 0
[ 334.268716] audit: type=1334 audit(1651428332.648:33): prog-id=20 op=UNLOAD
[ 334.275709] audit: type=1334 audit(1651428332.652:34): prog-id=19 op=UNLOAD
run.sh: line 8: 1799 Segmentation fault (core dumped) ./avm_main

If i use SHAER_PROG_2D_IMG, eglDraw() will not system crash, So I consid the problem will be in shader part.
static const vtint8 *VShader_Common =
"attribute vec4 vPosition;\n"
"attribute vec2 vTexCoord;\n"
"uniform mat4 mvp;\n"
"varying vec3 TexCoord;\n"
"void main() {\n"
" vec4 temPosition = mvp * vec4(vPosition.x, vPosition.y, vPosition.z, 1);\n"
" gl_Position = vec4(temPosition.x, temPosition.y, temPosition.z, temPosition.a);\n"
" TexCoord = vec3(vTexCoord, vPosition.w);\n"
"}\n";

static const vtint8 *FShader_Ext =
"#extension GL_OES_EGL_image_external : require\n"
"precision mediump float;\n"
"uniform samplerExternalOES myTexture;\n"
"varying vec3 TexCoord;\n"
"uniform vec4 myGain;\n"
"void main() {\n"
" gl_FragColor = vec4(texture2D(myTexture, TexCoord.xy).rgb, TexCoord.z)+vec4(myGain.xyz,0.0);\n"
"}\n";
static const vtint8 *FShader_2DImg =
"precision mediump float;\n"
"uniform sampler2D myTexture;\n"
"varying vec3 TexCoord;\n"
"void main() {\n"
" gl_FragColor = vec4(texture2D(myTexture, TexCoord.xy).bgra);\n"
"}\n";
static const vtint8 *FShader_2D =
"precision mediump float;\n"
"uniform sampler2D myTexture;\n"
"varying vec3 TexCoord;\n"
"uniform vec4 myGain;\n"
"void main() {\n"
" gl_FragColor = vec4(texture2D(myTexture, TexCoord.xy).rgb, TexCoord.z)+vec4(myGain.xyz,0.0);\n"
"}\n"
;

Hello,

Crist Yao said:

Thanks for replay! First,we built our own code without using Vision Apps project ! But our code have be varifired in another tda4 SDK 0900, everthing is ok! and our code also have be test at v9m,Ambarella..;

So, it is only crashing with one code base (SDK 9.2), but if you use another code base (another SDK 9.0 installation), you are not seeing the issue?

I am not familiar with the Ambarella, is this an EVM/Custom board? OR is it a software solution? But you are saying the code works there as well?

Are you able to build and run one of the other applications that use OpenGL? Like the app_srv_camera or app_srv_fileio? If these can run fine, then the issue must be somewhere in the application logic or the interconnects between your OpenGL node and the rest of the system.

Regards,

Erick

Hi,

Are you still facing this issue?

Regards,

Brijesh