glDrawArrays problems

[lego]

Hi.

A following code must draw a triangle. On a PC it have one green vertex and two red ones. But on a PSP all vertices are red. What am I doing wrong?

ogl.c:

Code: Select all

#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <SDL/SDL.h>
#include <SDL/SDL_ttf.h>
#include <SDL/SDL_opengl.h>
#include <math.h>
#include <pspkernel.h>
#include <pspdebug.h>
#include <pspthreadman.h>
#include <pspdisplay.h>
#include <pspnet_inet.h>
#include <pspnet.h>
#include <psputility.h>


PSP_MODULE_INFO&#40;"ogl", 0, 3, 5&#41;;
PSP_MAIN_THREAD_ATTR&#40;PSP_THREAD_ATTR_USER | PSP_THREAD_ATTR_VFPU&#41;;
PSP_HEAP_SIZE_KB&#40;-1024&#41;;
PSP_MAIN_THREAD_STACK_SIZE_KB&#40;1024&#41;;

#define printf pspDebugScreenPrintf


typedef struct &#123;
  unsigned int color;
  float x, y, z;
&#125; vertex_t;

uint32_t __attribute__&#40;&#40;aligned&#40;16&#41;&#41;&#41; c&#91;&#93; = &#123; 0xff0000ff,
                                              0xff00ff00,
                                              0xff00ff00&#125;;
uint16_t __attribute__&#40;&#40;aligned&#40;16&#41;&#41;&#41; t&#91;&#93; = &#123; 200, 200,
                                           300, 200,
                                           300, 100&#125;;

vertex_t __attribute__&#40;&#40;aligned&#40;16&#41;&#41;&#41; vvv&#91;&#93; = &#123;
  &#123;0xff00ff00, 100, 100, 0&#125;,
  &#123;0xff0000ff, 200, 200, 0&#125;,
  &#123;0xff0000ff, 100, 200, 0&#125;&#125;;


/*************************************************************
 * EXIT CALLBACK STUFF
 *************************************************************/
/* Exit callback */
int exit_callback&#40;int arg1, int arg2, void *common&#41; &#123;
  sceKernelExitGame&#40;&#41;;
  return 0;
&#125;

/* Callback thread */
int CallbackThread&#40;SceSize args, void *argp&#41; &#123;
  int cbid;

  cbid = sceKernelCreateCallback&#40;"Exit Callback", exit_callback, NULL&#41;;
  sceKernelRegisterExitCallback&#40;cbid&#41;;

  sceKernelSleepThreadCB&#40;&#41;;

  return 0;

&#125;

/* Sets up the callback thread and returns its thread id */
int SetupCallbacks&#40;void&#41; &#123;
  int thid = 0;

  thid = sceKernelCreateThread&#40;"update_thread", CallbackThread, 0x11, 0xFA0, 0, 0&#41;;
  if&#40;thid >= 0&#41; &#123;
    sceKernelStartThread&#40;thid, 0, 0&#41;;
  &#125;

  return thid;
&#125;
  

void test&#40;void&#41;
&#123;
  glInterleavedArrays&#40;GL_C4UB_V3F, 0, vvv&#41;;
  glDrawArrays&#40;GL_TRIANGLES, 0, 3&#41;;

  glFinish&#40;&#41;;
&#125;

void initgl&#40;void&#41;
&#123;
  glMatrixMode&#40;GL_PROJECTION&#41;;
  glLoadIdentity&#40;&#41;;
  glOrtho&#40;0.0, 480, 272, 0, -1, 1&#41;;
  //glFrustum&#40;0, 480, 0, 272, 0.9999, 100.0&#41;;


  glMatrixMode&#40;GL_MODELVIEW&#41;;
  glLoadIdentity&#40;&#41;;

  glViewport&#40;0, 0, 480, 272&#41;;

  glClearColor&#40;0.0, 0.0, 1.0, 0.0&#41;;
&#125;

int main&#40;void&#41;
&#123;
  SDL_Surface *scrn;


  SetupCallbacks&#40;&#41;;
  pspDebugScreenInit&#40;&#41;;

  if &#40; SDL_Init&#40;SDL_INIT_VIDEO&#41; &#41; &#123;
    fprintf&#40;stderr, "Error&#58; %s\n", SDL_GetError&#40;&#41;&#41;;
    return 1;
  &#125;
  atexit&#40;SDL_Quit&#41;;

  if &#40; !&#40;scrn = SDL_SetVideoMode&#40;480, 272, 32, SDL_OPENGL&#41;&#41; &#41; &#123;
    fprintf&#40;stderr, "Set video Error&#58; %s\n", SDL_GetError&#40;&#41;&#41;;
    return 2;
  &#125;

  initgl&#40;&#41;;

  glClear&#40;GL_COLOR_BUFFER_BIT&#41;;


  test&#40;&#41;;


  SDL_GL_SwapBuffers&#40;&#41;;

  sceKernelSleepThreadCB&#40;&#41;;

  return 0;
&#125;

Makefile:

Code: Select all

.PHONY: myclean

MOUNTDIR := /media/usbflash
DESTDIR := $(MOUNTDIR)/psp/game5xx/glda
TARGET = ogl.c
OBJS = ogl.o
PSP-PREF = $(shell psp-config --psp-prefix)


CFLAGS += -O2 -G0 -Wall -I$(PSP-PREF)/include \
        -I/home/lego/work/psp/pspdev/psp/include/SDL
LDFLAGS :=
LIBS =  -L$(PSP-PREF)/lib -L$(shell psp-config --pspsdk-path)/lib \
        -lSDL_ttf -lSDL -lglut -lGLU -lGL \
        -lfreetype -lpspvfpu -lm -lpspgu -lpspaudio -lpspwlan \
        -lpsphprm -lpsprtc 
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

BUILD_PRX = 1
PSP_FW_VERSION = 500
PSP_LARGE_MEMORY = 1

EXTRA_TARGETS = EBOOT.PBP
PSP_EBOOT_TITLE = glda

PSPSDK=$(shell psp-config --pspsdk-path)
include $(PSPSDK)/lib/build.mak

myclean:
        rm -f *~

install: all
        mount $(MOUNTDIR)
        mkdir -p $(DESTDIR) || true
        cp EBOOT.PBP $(DESTDIR)/
        mkdir $(DESTDIR)/fonts && \
          cp /usr/share/fonts/truetype/freefont/Free{Sans,Serif}.ttf \
            $(DESTDIR)/fonts/ || \
          true
        umount $(MOUNTDIR)

uninstall:
        mount $(MOUNTDIR)
        rm -rf $(DESTDIR)

Also, if I change test() to the following I see a very strange triangle:

Code: Select all

void test(void)
{
  glEnableClientState(GL_COLOR_ARRAY);
  glEnableClientState(GL_VERTEX_ARRAY);

  glColorPointer(4, GL_UNSIGNED_BYTE, 0, c);
  glVertexPointer(3, GL_SHORT, 0, t);

  glDrawArrays(GL_TRIANGLES, 0, 3);

  glFinish();
}

Can anybody help me :-)?

Thanks.

[jojojoris]

It's probably better to use sceGu or sceGum code.

[lego]

It's probably better to use sceGu or sceGum code.

:-) If I will find how I can use freetype fonts with sceGu, I rewrite my program with sceGu + sceGum.

[jojojoris]

Freetype just renders text as a bitmap which you can draw using the sceGu

You only have to do some reserch about the freetype API which isn't that difficult.

[lego]

Freetype just renders text as a bitmap which you can draw using the sceGu

You only have to do some reserch about the freetype API which isn't that difficult.

Thanks. I will try it.