Trouble drawing with GU_SPRITE

[jono]

I'm currently trying to draw a simple HUD over the top of a project I am doing, unfortunatly the images are not drawn correctly. Rather than the images being drawn, a flat pink colored rectangle with correct dimensions are showing up in te correct position. I'm pretty sure it's an initialisation problem but cannot seem to get a good combination.

I have included code for the parts of the project that are involved below, it is all contained within a guStart/Finish block:

The blitting function:
Note: before this function is called depth testing is disabled with "sceGuDisable(GU_DEPTH_TEST);". It is later re-enabled.

Code:

void blitTexture2( Texture* source, int x, int y)
{
sceGuTexImage( 0, source->width, source->height, source->width, source->data);

Vertex* vertices = (Vertex*)sceGuGetMemory(2 * sizeof(Vertex));
vertices[0].u = 0.0;
vertices[0].v = 0.0;
vertices[0].x = x;
vertices[0].y = y;
vertices[0].z = 0;
vertices[1].u = 1.0;
vertices[1].v = 1.0;
vertices[1].x = x + source->width;
vertices[1].y = y + source->height;
vertices[1].z = 0;
sceGuDrawArray( GU_SPRITES, GU_TEXTURE_32BITF | GU_TEXTURE_32BITF | GU_TRANSFORM_2D, 2, 0, vertices);
}

The initialisation code:

Code:

// Init GU
sceGuInit();
sceGuStart( GU_DIRECT, display_list );

// Allocate Buffers
frame_buffer_0 = vrelptr( valloc(FRAME_BUFFER_SIZE));
frame_buffer_1 = vrelptr( valloc(FRAME_BUFFER_SIZE));
depth_buffer = vrelptr( valloc(FRAME_BUFFER_SIZE / 2));

current_frame_buffer = frame_buffer_0;

// Set Buffers
sceGuDrawBuffer( GU_PSM_8888, frame_buffer_0, LINE_WIDTH );
sceGuDispBuffer( SCREEN_WIDTH, SCREEN_HEIGHT, frame_buffer_1, LINE_WIDTH);
sceGuClear(GU_COLOR_BUFFER_BIT | GU_DEPTH_BUFFER_BIT);
sceGuDepthBuffer( depth_buffer, LINE_WIDTH);

sceGuOffset( 2048 - (SCREEN_WIDTH/2), 2048 - (SCREEN_HEIGHT/2));
sceGuViewport( 2048, 2048, SCREEN_WIDTH, SCREEN_HEIGHT);
sceGuDepthRange(0xc350,0x2710);

// Set Render States
sceGuScissor( 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
sceGuEnable( GU_SCISSOR_TEST );
sceGuDepthFunc( GU_GEQUAL );
sceGuAlphaFunc(GU_GREATER, 0, 0xff);
sceGuEnable(GU_ALPHA_TEST);
sceGuEnable( GU_DEPTH_TEST );
sceGuFrontFace( GU_CW );
sceGuEnable( GU_CULL_FACE );
sceGuShadeModel( GU_SMOOTH );
sceGuEnable( GU_CLIP_PLANES );
sceGuEnable( GU_TEXTURE_2D );

// 32-bit textures, assuming all are swizzled
sceGuTexMode( GU_PSM_8888, 0, 0, GU_TRUE);
sceGuTexFunc( GU_TFX_DECAL, GU_TCC_RGB ); // Modulate the color of the image
sceGuTexFilter( GU_LINEAR, GU_LINEAR ); // Linear filtering
sceGuTexScale( 1.0f, 1.0f ); // No scaling
sceGuTexOffset( 0.0f, 0.0f );
sceGuAmbientColor(0xffffffff);
sceGuEnable(GU_BLEND);
sceGuBlendFunc(GU_ADD, GU_SRC_ALPHA, GU_ONE_MINUS_SRC_ALPHA, 0, 0);
gumInit();

sceGuFinish();
sceDisplayWaitVblankStart();
sceGuSync(0,0);

sceGuDisplay(GU_TRUE);

The projection init: (Unsure if this is related)

Code:

static void projectionInit()
{
sceGuStart( GU_DIRECT, display_list );

// setup matrices for the triangle
sceGumMatrixMode(GU_PROJECTION);
sceGumLoadIdentity();
sceGumPerspective( 45.0f, 16.0f/9.0f, 0.8f, 100.0f);

sceGumMatrixMode(GU_VIEW);
sceGumLoadIdentity();

sceGuClearColor( GU_COLOR( 0.0f, 0.0f, 0.0f, 1.0f));
sceGuClearDepth(0);

sceGuFinish();
sceGuSync( 0, 0);
}

I haven't got code in place to grab a screenshot but if one is required I set some up and get one.

I have searched the forum and while there has been similair problems, none have been exactly the same.

Thanks.

Jono.

[Raphael]

sceGuDrawArray( GU_SPRITES, GU_TEXTURE_32BITF | GU_TEXTURE_32BITF | GU_TRANSFORM_2D, 2, 0, vertices);

Fixing that line should help wonders

[jono]

I need a punch in the head, I've been trying different states/setups and trying to ignore this problem and concentrate on other projects for about 2 weeks without a clue. Absolutly Unbelievable  .

Thanks alot mate .

Well now I've just got to work on getting alpha blending working and my HUD will be finished.

Jono.

[Raphael]

Sometimes you just can't help it and will overlook simple errors like that not matter how hard you look at the code (I have this too every so often). That's when you need someone else to take a look at the code and that's what we're here for ;P

[Vincent]

Yeah, bro! Just happened to me with my new linked list template I've been developing. You're building a HUD huh? Sounds like a game; a cool game.

[Flatmush]

I know, games with hud's pwn

On a side note, why is jono not down as a C/C++ developer? He needs to join our army of pinks.

[Insert_Witty_Name]

Agreed and done.

[jono]

Cool, thanks for putting in a good word flatmush, I had wondered what was required to join the pinks but had never asked .

[Vincent]

Not to spam up this post, but I was asked that a couple of months ago. I went to my profile settings, but I couldn't find an option to change my position from Sr. Member to C/C++ Dev.

[jono]

I'm not 100% sure because I haven't payed alot of attention to that side of the forums but I believe you have to get a mod to do it. I didn't change anything myself, IWN changed mine yesterday I think.

[Insert_Witty_Name]

It just allows you to create a thread in the releases forum.