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How to use fbdev_pixmap structure passed to eglCreatePixmapSurface create Surface

Hi,
I now use the fbdev window system, I assign a fbdev_pixmap structure configured corresponding content, pass it to eglCreatePixmapSurface function, but get to the error information 0x0000300A
Such as:
Error: eglCreatePixmapSurface failed Error: 0x0000300A
I will be how to configure fbdev_pixmap structure content, there is no successful example sent to me ah?

Thank you

Parents

0 yueliu over 10 years ago

Hi Michael McGeagh,

My complete code below：

/**************************************************************************
*
* Copyright 2013 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
**************************************************************************/

/*
* Draw a triangle with X/EGL and OpenGL ES 2.x
*/

#define USE_FULL_GL 0
#include <assert.h>
#include <math.h>
#include <GLES2/gl2.h>  /* use OpenGL ES 2.x */
#include <EGL/egl.h>
#include <unistd.h>
#include <stdbool.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
//#include <png.h>

#include <EGL/eglext.h>

#include <EGL/fbdev_window.h>

#define FLOAT_TO_FIXED(X)   ((X) * 65535.0)

#define DEV_NAME     "/dev/sns-media-mem"

static EGLNativeDisplayType native_dpy;

static GLfloat view_rotx = 0.0, view_roty = 0.0;

static GLint u_matrix = -1;
static GLint attr_pos = 0, attr_color = 1;

static struct fbdev_pixmap surface = {
       .width = 1920,
       .height = 1080,
       .bytes_per_pixel = 4,
       .buffer_size = 32,
       .red_size = 8,
       .green_size = 8,
       .blue_size = 8,
       .alpha_size = 8,
       .luminance_size = 0,
       .flags = FBDEV_PIXMAP_DEFAULT,//FBDEV_PIXMAP_SUPPORTS_UMP,
       .format = 1,
};


static void
make_z_rot_matrix(GLfloat angle, GLfloat *m)
{
   float c = cos(angle * M_PI / 180.0);
   float s = sin(angle * M_PI / 180.0);
   int i;
   for (i = 0; i < 16; i++)
      m[i] = 0.0;
   m[0] = m[5] = m[10] = m[15] = 1.0;

   m[0] = c;
   m[1] = s;
   m[4] = -s;
   m[5] = c;
}

static void
make_scale_matrix(GLfloat xs, GLfloat ys, GLfloat zs, GLfloat *m)
{
   int i;
   for (i = 0; i < 16; i++)
      m[i] = 0.0;
   m[0] = xs;
   m[5] = ys;
   m[10] = zs;
   m[15] = 1.0;
}


static void
mul_matrix(GLfloat *prod, const GLfloat *a, const GLfloat *b)
{
#define A(row,col)  a[(col<<2)+row]
#define B(row,col)  b[(col<<2)+row]
#define P(row,col)  p[(col<<2)+row]
   GLfloat p[16];
   GLint i;
   for (i = 0; i < 4; i++) {
      const GLfloat ai0=A(i,0),  ai1=A(i,1),  ai2=A(i,2),  ai3=A(i,3);
      P(i,0) = ai0 * B(0,0) + ai1 * B(1,0) + ai2 * B(2,0) + ai3 * B(3,0);
      P(i,1) = ai0 * B(0,1) + ai1 * B(1,1) + ai2 * B(2,1) + ai3 * B(3,1);
      P(i,2) = ai0 * B(0,2) + ai1 * B(1,2) + ai2 * B(2,2) + ai3 * B(3,2);
      P(i,3) = ai0 * B(0,3) + ai1 * B(1,3) + ai2 * B(2,3) + ai3 * B(3,3);
   }
   memcpy(prod, p, sizeof(p));
#undef A
#undef B
#undef PROD
}


static void
draw(void)
{
   static const GLfloat verts[3][2] = {
      { -1, -1 },
      {  1, -1 },
      {  0,  1 }
   };
   static const GLfloat colors[3][3] = {
      { 1, 0, 0 },
      { 0, 1, 0 },
      { 0, 0, 1 }
   };

   GLfloat mat[16], rot[16], scale[16];

   /* Set modelview/projection matrix */
   make_z_rot_matrix(view_rotx, rot);
   make_scale_matrix(0.5, 0.5, 0.5, scale);
   mul_matrix(mat, rot, scale);
   glUniformMatrix4fv(u_matrix, 1, GL_FALSE, mat);


   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
   {
      glVertexAttribPointer(attr_pos, 2, GL_FLOAT, GL_FALSE, 0, verts);
      glVertexAttribPointer(attr_color, 3, GL_FLOAT, GL_FALSE, 0, colors);
      glEnableVertexAttribArray(attr_pos);
      glEnableVertexAttribArray(attr_color);

      glDrawArrays(GL_TRIANGLES, 0, 3);

      glDisableVertexAttribArray(attr_pos);
      glDisableVertexAttribArray(attr_color);
   }
}


/* new window size or exposure */
static void
reshape(int width, int height)
{
   glViewport(0, 0, (GLint) width, (GLint) height);
}


static void
create_shaders(void)
{
   static const char *fragShaderText =
      "precision mediump float;\n"
      "varying vec4 v_color;\n"
      "void main() {\n"
      "   gl_FragColor = v_color;\n"
      "}\n";
   static const char *vertShaderText =
      "uniform mat4 modelviewProjection;\n"
      "attribute vec4 pos;\n"
      "attribute vec4 color;\n"
      "varying vec4 v_color;\n"
      "void main() {\n"
      "   gl_Position = modelviewProjection * pos;\n"
      "   v_color = color;\n"
      "}\n";

   GLuint fragShader, vertShader, program;
   GLint stat;

   fragShader = glCreateShader(GL_FRAGMENT_SHADER);
   glShaderSource(fragShader, 1, (const char **) &fragShaderText, NULL);
   glCompileShader(fragShader);
   glGetShaderiv(fragShader, GL_COMPILE_STATUS, &stat);
   if (!stat) {
      printf("Error: fragment shader did not compile!\n");
      exit(1);
   }

   vertShader = glCreateShader(GL_VERTEX_SHADER);
   glShaderSource(vertShader, 1, (const char **) &vertShaderText, NULL);
   glCompileShader(vertShader);
   glGetShaderiv(vertShader, GL_COMPILE_STATUS, &stat);
   if (!stat) {
      printf("Error: vertex shader did not compile!\n");
      exit(1);
   }

   program = glCreateProgram();
   glAttachShader(program, fragShader);
   glAttachShader(program, vertShader);
   glLinkProgram(program);

   glGetProgramiv(program, GL_LINK_STATUS, &stat);
   if (!stat) {
      char log[1000];
      GLsizei len;
      glGetProgramInfoLog(program, 1000, &len, log);
      printf("Error: linking:\n%s\n", log);
      exit(1);
   }

   glUseProgram(program);

   if (1) {
      /* test setting attrib locations */
      glBindAttribLocation(program, attr_pos, "pos");
      glBindAttribLocation(program, attr_color, "color");
      glLinkProgram(program);  /* needed to put attribs into effect */
   }
   else {
      /* test automatic attrib locations */
      attr_pos = glGetAttribLocation(program, "pos");
      attr_color = glGetAttribLocation(program, "color");
   }

   u_matrix = glGetUniformLocation(program, "modelviewProjection");
   printf("Uniform modelviewProjection at %d\n", u_matrix);
   printf("Attrib pos at %d\n", attr_pos);
   printf("Attrib color at %d\n", attr_color);
}



static void
init(void)
{
   glClearColor(0.4, 0.4, 0.4, 0.0);

   create_shaders();
}

static EGLint const config_attribute_list[] = {
    EGL_RED_SIZE, 8,
    EGL_GREEN_SIZE, 8,
    EGL_BLUE_SIZE, 8,
    EGL_SURFACE_TYPE, EGL_PIXMAP_BIT,// EGL_PBUFFER_BIT EGL_WINDOW_BIT
    EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
    EGL_DEPTH_SIZE, 0,
    EGL_NONE
};


/*
* Create an RGB, double-buffered X window.
* Return the window and context handles.
*/
static void
make_window( EGLDisplay egl_dpy,
              const char *name,
              int x, int y, int width, int height,
              void *winRet,
              EGLContext *ctxRet,
              EGLSurface *surfRet)
{
   int scrnum;
   unsigned long mask;
   int num_visuals;
   EGLContext ctx;
   EGLConfig config;
   EGLint num_configs;
   EGLint vid;
   int i;


   if (!eglChooseConfig(egl_dpy, config_attribute_list, &config, 1, &num_configs)) {
      printf("Error: couldn't get an EGL visual config\n");
      exit(1);
   }

   assert(config);
   assert(num_configs > 0);

    EGLint ai32ContextAttribs[4];
    i=0;
    ai32ContextAttribs[i] = EGL_NONE;
    ai32ContextAttribs[i++] = EGL_CONTEXT_CLIENT_VERSION;
    ai32ContextAttribs[i++] = 2;
    ai32ContextAttribs[i] = EGL_NONE;

       eglBindAPI(EGL_OPENGL_ES_API);

   ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, ai32ContextAttribs );
   if (!ctx) {
      printf("Error: eglCreateContext failed\n");
      exit(1);
   }

    EGLint        attrib_list[16];
    attrib_list[0] = EGL_NONE;

   *surfRet = eglCreatePixmapSurface(egl_dpy, config, winRet, attrib_list);

   if (!*surfRet) {
          printf("Error: eglCreatePixmapSurface failed Error:0x%08X\n", eglGetError());
          exit(1);
   }


   *ctxRet = ctx;
}




static void
event_loop(EGLDisplay egl_dpy, EGLSurface egl_surf)
{
    int redraw = 1;
//   while (1) {
      if (redraw) {
         printf("event_loop------------111111 \n");
         draw();
         printf("event_loop------------22222222222 \n");

         eglSwapBuffers(egl_dpy, egl_surf);
         glFlush();
           printf("event_loop------------333333333333 \n");
      }
      while (1) {
          ;
      }
//   }
}


static void
usage(void)
{
   printf("Usage:\n");
   printf("  -display <displayname>  set the display to run on\n");
   printf("  -info                   display OpenGL renderer info\n");
}

int
main(int argc, char *argv[])
{
   const int winWidth = 1920, winHeight = 1080;
   EGLSurface egl_surf;
   EGLContext egl_ctx;
   EGLDisplay egl_dpy;
   char *dpyName = NULL;
   GLboolean printInfo = GL_FALSE;
   EGLint egl_major, egl_minor;
   int i;
   const char *s;

  setenv("EGL_PLATFORM", "fbdev", 0);
  setenv("FRAMEBUFFER", "/dev/fb0", 0);

  egl_dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
   if (!egl_dpy) {
      printf("Error: eglGetDisplay() failed\n");
      return -1;
   }

   if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) {
      printf("Error: eglInitialize() failed\n");
      return -1;
   }

   make_window( egl_dpy,
                 "OpenGL ES 2.x tri", 0, 0, winWidth, winHeight,
                 &surface, &egl_ctx, &egl_surf);

   if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
      printf("Error: eglMakeCurrent() failed\n");
      return -1;
   }

   if (printInfo) {
      printf("GL_RENDERER   = %s\n", (char *) glGetString(GL_RENDERER));
      printf("GL_VERSION    = %s\n", (char *) glGetString(GL_VERSION));
      printf("GL_VENDOR     = %s\n", (char *) glGetString(GL_VENDOR));
      printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
   }

   init();

   /* Set initial projection/viewing transformation.
    * We can't be sure we'll get a ConfigureNotify event when the window
    * first appears.
    */

   event_loop( egl_dpy, egl_surf);

   return 0;
}

I do not know if “surface” is configured correctly？

Thanks in advance,

yueliu

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