PVR_LIST_PT_POLY list not working - pvr_params set

[Sigeru]

Hi!

I'm trying to render some PT polys, using the code below, but nothing gets displayed.

Code: Select all

pvr_list_begin(PVR_LIST_PT_POLY);
{
	pvr_vertex_t *l_current_vert = &m_kos_vertices_pt[0];

	for (ui i = 0; i < m_faces_pt_count; i++)
	{
		pvr_poly_cxt_t l_context;
		pvr_poly_hdr_t l_header;

		DC_POLY *l_current_face = &m_dc_poly_pt[i];
		pvr_poly_cxt_txr(&l_context, PVR_LIST_PT_POLY, PVR_TXRFMT_ARGB4444 | PVR_TXRFMT_TWIDDLED | PVR_TXRFMT_VQ_ENABLE, l_current_face->m_width, l_current_face->m_height, l_current_face->m_textid, PVR_FILTER_BILINEAR);
		pvr_poly_compile(&l_header, &l_context);
		pvr_prim(&l_header, sizeof(l_header));

		ui l_num_vertex = l_current_face->m_num_vertex; 
		for (ui j = 0; j < l_num_vertex; j++)
		{
			pvr_prim(l_current_vert, sizeof(pvr_vertex_t));             
			l_current_vert++;
		}
	}
			
}pvr_list_finish();

If I change all the occurrences of PVR_LIST_PT_POLY to PVR_LIST_OP_POLY in the code above it all works fine.

I initiliaze the PVR like so:

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pvr_init_params_t pvr_params = { { PVR_BINSIZE_16, PVR_BINSIZE_0, PVR_BINSIZE_16, PVR_BINSIZE_0, PVR_BINSIZE_16 },  512 * 1024 };
pvr_init(&pvr_params);

And the textures are PNGs converted with vqenc using the following options

Code: Select all

vqenc -v -t -q -k -a

I tried also with vqenc -v -t -q -k -b and PVR_TXRFMT_ARGB1555 but got the same result.

Any idea what I might be doing wrong?

Thanks!

[BlueCrab]

How did you initialize the PVR in your code? The default setup in KOS does not enable the PT list, so if you used pvr_init_defaults() (or didn't call pvr_init() yourself at all), then PT polygons will not work.

You need to do something like this:

Code: Select all

int my_pvr_init(void) {
    pvr_init_params_t params = {
        /* Enable opaque, translucent, and punch-thru polygons with size 16 */
        { PVR_BINSIZE_16, PVR_BINSIZE_0, PVR_BINSIZE_16, PVR_BINSIZE_0, PVR_BINSIZE_16 },

        /* Vertex buffer size 512K */
        512 * 1024,

        /* No DMA */
        0,

        /* No FSAA */
        0,

        /* Translucent Autosort enabled. */
        0
    };

    return pvr_init(&params);
}

And, of course, call that function instead of pvr_init_defaults().

[Sigeru]

Hey @BlueCrab many thanks for the response.

That's what I'm doing to set it up. The code was below the rendering one in my post. I was doing exactly the same except for setting to 0 the FSAA and the translucent part, but unfortunately initializing those to 0 doesn't change the result

[Sigeru]

Ok, mistery solved. The alpha component in argb when setting the vertex was set to 0... Duh