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some pixel testing code (inactive)

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This commit is contained in:
Magnus Auvinen 2008-10-08 18:19:27 +00:00
parent b74c2b7931
commit 646635ec84
1 changed files with 161 additions and 1 deletions
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162
src/engine/client/ec_gfx.c
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@ -77,6 +77,164 @@ static TEXTURE textures[MAX_TEXTURES];
static int first_free_texture;
static int memory_usage = 0;
#if 0
typedef struct { unsigned char r, g, b, a; } PIXEL;
static PIXEL *pixeltest_data = 0;
static PIXEL *pixeltest_tex = 0;
static int pixeltest_w = 64;
static int pixeltest_h = 64;
static int pixeltest_analysedata(int fault)
{
int x,y,c;
PIXEL *pp = pixeltest_data;
for(y = 0; y < pixeltest_h; y++)
for(x = 0; x < pixeltest_w; x++, pp++, c++)
{
PIXEL p = *pp;
if(p.r > fault)
return p.r;
}
return 0;
}
static void pixeltest_filltile(int id)
{
int x, y;
for(y = 0; y < 1024; y++)
for(x = 0; x < 1024; x++)
{
int this_id = (x/64) + (y/64)*16;
if(this_id == id)
{
if(x%64 == 0 || x%64 == 63 || y%64 == 0 || y%64 == 63)
{
pixeltest_tex[y*1024+x].r = 0;
pixeltest_tex[y*1024+x].g = 0;
pixeltest_tex[y*1024+x].b = 255;
pixeltest_tex[y*1024+x].a = 255;
}
else
{
pixeltest_tex[y*1024+x].r = 0;
pixeltest_tex[y*1024+x].g = 255;
pixeltest_tex[y*1024+x].b = 0;
pixeltest_tex[y*1024+x].a = 255;
}
}
else
{
pixeltest_tex[y*1024+x].r = 255;
pixeltest_tex[y*1024+x].g = 0;
pixeltest_tex[y*1024+x].b = 0;
pixeltest_tex[y*1024+x].a = 255;
}
}
}
static void pixeltest_dotesting()
{
int result, texture_id;
float start_tx=0;
float start_ty=0;
float end_tx=1;
float end_ty=1;
int tile_id = 8*16+3;
int t;
float frac = 0;
pixeltest_data = (PIXEL *)mem_alloc(pixeltest_w*(pixeltest_h)*4, 1);
pixeltest_tex = (PIXEL *)mem_alloc(1024*(1024)*4, 1);
/*pixeltest_filltile(0);*/
/*pixeltest_filltile(0xff);*/
dbg_msg("", "%f", 1.0f/1024.0f);
gfx_mapscreen(0,0,screen_width, screen_height);
/*
start = 0.5f/1024.0f;
end = 1.0f-(0.5f/1024.0f)
*/
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
for(t = 0; t < 256; t++)
{
/*t = 41;*/
pixeltest_filltile(tile_id);
texture_id = gfx_load_texture_raw(1024,1024,IMG_RGBA,pixeltest_tex,IMG_RGBA,TEXLOAD_NORESAMPLE);
glClearColor(0,0,0,0);
glClear(GL_COLOR_BUFFER_BIT);
gfx_texture_set(texture_id);
gfx_quads_begin();
/*
gfx_quads_setsubset(start_tx,start_ty,0.001f,0.001f);
gfx_quads_drawTL(pixeltest_w/2, pixeltest_h/2, pixeltest_w, pixeltest_h);
*/ /*0.000977*/
/*
gfx_quads_setsubset(0.999f,0.999f,end_tx,end_ty);
gfx_quads_drawTL(0,0,pixeltest_w/2, pixeltest_h/2);
*/
{
float tile_pixelsize = 1024/32.0f;
float scale = pixeltest_w*((t+1)/250.0f);
float final_tilesize = scale/(screen_width) * gfx_screenwidth();
float final_tilesize_scale = final_tilesize/tile_pixelsize;
/*float frac = (1.0f/texsize);// * (1/final_tilesize_scale);*/
float tx0 = 0.5f/1024.0f + (tile_id%16)*64.0f / (1024.0f) + frac;
float ty0 = 0.5f/1024.0f + (tile_id/16)*64.0f / (1024.0f) + frac;
float tx1 = 0.5f/1024.0f + (((tile_id%16) + 1)*64.0f-1) / (1024.0f) - frac;
float ty1 = 0.5f/1024.0f + (((tile_id/16) + 1)*64.0f-1) / (1024.0f) - frac;
dbg_msg("", "scale: %f %f", scale, final_tilesize_scale);
gfx_quads_setsubset(tx0,ty0,tx1,ty1);
/*gfx_quads_setsubset(0,0,1,1);*/
gfx_quads_drawTL(pixeltest_w/4+(t+1)/250.0f,pixeltest_h/4,pixeltest_w/2,pixeltest_w/2);
}
gfx_quads_end();
glReadPixels(0,screen_height-pixeltest_h, pixeltest_w, pixeltest_h, GL_RGBA, GL_UNSIGNED_BYTE, pixeltest_data);
result = pixeltest_analysedata(2);
if(result)
{
frac += 0.000001f;
dbg_msg("", "fail on %d with %d newfrac = %f", t, result, frac);
t--;
/*start_tx += 0.000001f; start_ty += 0.000001f;
dbg_msg("", "found stuff %f %f %d %f %f", start_tx, start_ty, result, 0.5f/1024, 0.5f/1024);
end_tx -= 0.000001f; end_ty -= 0.000001f;
dbg_msg("", "found stuff %f %d %f", end_tx, result, 1.0f-0.5f/1024);*/
}
/*else
dbg_msg("", "pass on %d", t);*/
glfwSwapBuffers();
glfwPollEvents();
if(glfwGetKey(KEY_ESC))
exit(1);
gfx_unload_texture(texture_id);
}
dbg_msg("", "frac=%f %f of a pixel", frac, frac/(1.0f/1024.0f));
exit(1);
}
#endif
static const unsigned char null_texture_data[] = {
0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0x00,0xff,0x00,0xff, 0x00,0xff,0x00,0xff,
0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0x00,0xff,0x00,0xff, 0x00,0xff,0x00,0xff,
@ -228,7 +386,6 @@ int gfx_init()
gfx_mask_op(MASK_NONE, 0);
/*glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);*/
/* Set all z to -5.0f */
for (i = 0; i < vertex_buffer_size; i++)
vertices[i].pos.z = -5.0f;
@ -248,6 +405,9 @@ int gfx_init()
/* create null texture, will get id=0 */
gfx_load_texture_raw(4,4,IMG_RGBA,null_texture_data,IMG_RGBA,TEXLOAD_NORESAMPLE);
/* perform some tests */
/* pixeltest_dotesting(); */
/* set vsync as needed */
gfx_set_vsync(config.gfx_vsync);
return 1;