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  • Fragment shader does not show any colour when compiled with vs2013

    11 juin 2015, par 5mayfive

    When compiled with vs2010, the fragment shader works, but when I compiled and run in vs 2013, it’s grey.

    My fragment shader converts the yuv texture into rgb

    Below is my fragment code

        const char *FProgram =
    
    "uniform sampler2D Ytex;\n"
    
    "uniform sampler2D Utex;\n"
    
    "uniform sampler2D Vtex;\n"
    
    "void main(void) {\n"
    
    "  vec4 c = vec4((texture2D(Ytex, gl_TexCoord[0]).r - 16./255.) * 1.164);\n"
    
    "  vec4 U = vec4(texture2D(Utex, gl_TexCoord[0]).r - 128./255.);\n"
    
    "  vec4 V = vec4(texture2D(Vtex, gl_TexCoord[0]).r - 128./255.);\n"
    
    "  c += V * vec4(1.596, -0.813, 0, 0);\n"
    
    "  c += U * vec4(0, -0.392, 2.017, 0);\n"
    
    "  c.a = 1.0;\n"
    
    "  gl_FragColor = c;\n"
    
    "}\n";
    

    

    

    

    

    
glClearColor(0, 0, 0, 0);
    

    
PHandle = glCreateProgram();
    
FSHandle = glCreateShader(GL_FRAGMENT_SHADER);
    

    

    

    
glShaderSource(FSHandle, 1, &FProgram, NULL);
    
glCompileShader(FSHandle);
    

    
glAttachShader(PHandle, FSHandle);
    
glLinkProgram(PHandle);
    

    

    
glUseProgram(PHandle);
    
glDeleteProgram(PHandle);
    
glDeleteProgram(FSHandle);

    This is my texture code, I receive linesize and yuv frame data from ffmpeg and make into texture. Everything works fine in VS 2010 computer, but when compiled and run in vs2013 computer, it is grey (black n white), no colour

        /* Select texture unit 1 as the active unit and bind the U texture. */
    
glPixelStorei(GL_UNPACK_ROW_LENGTH, linesize1);
    
glActiveTexture(GL_TEXTURE1);
    
i = glGetUniformLocation(PHandle, "Utex");
    
glUniform1i(i, 1);  /* Bind Utex to texture unit 1 */
    
glBindTexture(GL_TEXTURE_2D, 1);
    
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, width / 2, height / 2, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, frame1);
    
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
    

    

    
/* Select texture unit 2 as the active unit and bind the V texture. */
    
glPixelStorei(GL_UNPACK_ROW_LENGTH, linesize2);
    
glActiveTexture(GL_TEXTURE2);
    
i = glGetUniformLocation(PHandle, "Vtex");
    
glUniform1i(i, 2);  /* Bind Vtext to texture unit 2 */
    
glBindTexture(GL_TEXTURE_2D, 2);
    
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, width / 2, height / 2, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, frame2);
    
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
    

    

    
/* Select texture unit 0 as the active unit and bind the Y texture. */
    

    

    

    
glPixelStorei(GL_UNPACK_ROW_LENGTH, linesize0);
    
glActiveTexture(GL_TEXTURE0);
    
i = glGetUniformLocation(PHandle, "Ytex");
    
glUniform1i(i, 0);
    
glBindTexture(GL_TEXTURE_2D, 0);
    
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, width, height, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, frame0);
    
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
    

    

    

    
glClear(GL_COLOR_BUFFER_BIT);
    

    
/* Draw image (again and again). */
    

    
glBegin(GL_QUADS);
    
glTexCoord2i(0, 0);
    
glVertex2i(-w / 2, h / 2);
    
glTexCoord2i(1, 0);
    
glVertex2i(w / 2, h / 2);
    
glTexCoord2i(1, 1);
    
glVertex2i(w / 2, -h / 2);
    
glTexCoord2i(0, 1);
    
glVertex2i(-w / 2, -h / 2);
    
glEnd();

    Need guidance here, thanks in advance !

  • Fragment shader does not show any colour when compiled with vs2013

    4 septembre 2019, par 5mayfive

    When compiled with vs2010, the fragment shader works, but when I compiled and run in vs 2013, it’s grey.

    My fragment shader converts the yuv texture into rgb

    Below is my fragment code

        const char *FProgram =
    
    "uniform sampler2D Ytex;\n"
    
    "uniform sampler2D Utex;\n"
    
    "uniform sampler2D Vtex;\n"
    
    "void main(void) {\n"
    
    "  vec4 c = vec4((texture2D(Ytex, gl_TexCoord[0]).r - 16./255.) * 1.164);\n"
    
    "  vec4 U = vec4(texture2D(Utex, gl_TexCoord[0]).r - 128./255.);\n"
    
    "  vec4 V = vec4(texture2D(Vtex, gl_TexCoord[0]).r - 128./255.);\n"
    
    "  c += V * vec4(1.596, -0.813, 0, 0);\n"
    
    "  c += U * vec4(0, -0.392, 2.017, 0);\n"
    
    "  c.a = 1.0;\n"
    
    "  gl_FragColor = c;\n"
    
    "}\n";
    

    

    

    

    

    
glClearColor(0, 0, 0, 0);
    

    
PHandle = glCreateProgram();
    
FSHandle = glCreateShader(GL_FRAGMENT_SHADER);
    

    

    

    
glShaderSource(FSHandle, 1, &FProgram, NULL);
    
glCompileShader(FSHandle);
    

    
glAttachShader(PHandle, FSHandle);
    
glLinkProgram(PHandle);
    

    

    
glUseProgram(PHandle);
    
glDeleteProgram(PHandle);
    
glDeleteProgram(FSHandle);

    This is my texture code, I receive linesize and yuv frame data from ffmpeg and make into texture. Everything works fine in VS 2010 computer, but when compiled and run in vs2013 computer, it is grey (black n white), no colour

        /* Select texture unit 1 as the active unit and bind the U texture. */
    
glPixelStorei(GL_UNPACK_ROW_LENGTH, linesize1);
    
glActiveTexture(GL_TEXTURE1);
    
i = glGetUniformLocation(PHandle, "Utex");
    
glUniform1i(i, 1);  /* Bind Utex to texture unit 1 */
    
glBindTexture(GL_TEXTURE_2D, 1);
    
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, width / 2, height / 2, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, frame1);
    
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
    

    

    
/* Select texture unit 2 as the active unit and bind the V texture. */
    
glPixelStorei(GL_UNPACK_ROW_LENGTH, linesize2);
    
glActiveTexture(GL_TEXTURE2);
    
i = glGetUniformLocation(PHandle, "Vtex");
    
glUniform1i(i, 2);  /* Bind Vtext to texture unit 2 */
    
glBindTexture(GL_TEXTURE_2D, 2);
    
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, width / 2, height / 2, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, frame2);
    
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
    

    

    
/* Select texture unit 0 as the active unit and bind the Y texture. */
    

    

    

    
glPixelStorei(GL_UNPACK_ROW_LENGTH, linesize0);
    
glActiveTexture(GL_TEXTURE0);
    
i = glGetUniformLocation(PHandle, "Ytex");
    
glUniform1i(i, 0);
    
glBindTexture(GL_TEXTURE_2D, 0);
    
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, width, height, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, frame0);
    
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
    

    

    

    
glClear(GL_COLOR_BUFFER_BIT);
    

    
/* Draw image (again and again). */
    

    
glBegin(GL_QUADS);
    
glTexCoord2i(0, 0);
    
glVertex2i(-w / 2, h / 2);
    
glTexCoord2i(1, 0);
    
glVertex2i(w / 2, h / 2);
    
glTexCoord2i(1, 1);
    
glVertex2i(w / 2, -h / 2);
    
glTexCoord2i(0, 1);
    
glVertex2i(-w / 2, -h / 2);
    
glEnd();

  • wav oggenc html audio -> why it deosn't work in firefox

    19 avril 2016, par ghi

    I have very strange issue. I want to play ogg files on firefox using audio tag. But when I try to run this audio, firebug reporting this error :

    Media resource http://127.0.0.1/packhorse/src/sounds/558143.ogg could not be decoded.
    

    

    
xhr.send( ( s.hasContent && s.data ) || null );
    

    
jquery-1.8.2.js (wiersz 8416)
    
All candidate resources failed to load. Media load paused.

    I creating this ogg files from wav files generated by timidity++ using oggenc command.
    When I’m trying to open this file directly in firefox, I get black screen with grey box and the following error :

    Video can't be played becouse the file is corrupt.

    But I don’t want to play video - it’s the audio file.

    I was thought that is some mime issue as long as I realized that on chrome everything work correctly. Have you know what can couse that problems ?

    You can download audio file which I want to play on firefox from here :

    http://193.17.184.23/892643.ogg

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