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LuMo
Joined: 21 Aug 2005
Posts: 410
Location: Austria
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 Posted: Wed Feb 01, 2006 11:57 pm Post subject: textures & normals |
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hi,
i am still working on my meshloader and currently i am trying to get textures on the meshes;
the structure i am using for a textured vertex is:
| Code: | class Vertex3dbV4
{
public:
float u, v; // UV-texture
unsigned int color; // AABBGGRR
float nx, ny, nz; // normals
float x, y, z;
}; |
so when i am drawing the model i pass the following line:
| Code: | sceGumDrawArray(GU_TRIANGLES,
GU_INDEX_16BIT | GU_TEXTURE_32BITF | GU_NORMAL_32BITF | GU_COLOR_8888 | GU_VERTEX_32BITF | GU_TRANSFORM_3D,
(int)mesh.faceCount * 3,
mesh.faces,
mesh.verticesV4); |
note: i also tried to swap to
GU_INDEX_16BIT | GU_TEXTURE_32BITF | GU_COLOR_8888 | GU_NORMAL_32BITF |GU_VERTEX_32BITF | GU_TRANSFORM_3D
with the absolute same effect...
its still flat!
the normals are calculated correct, as i am using it in non-textured mode, which works out nice!
any ideas?
greets
lumo
_________________
"Good artists copy, great artists steal."
Pablo Picasso
go2lumo.com |
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jsgf
Joined: 12 Jul 2005
Posts: 254
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| Posted: Thu Feb 02, 2006 8:59 am Post subject: |
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You're not calling | Code: | | sceGuTexFunc(GU_TFX_MODULATE, GU_TCC_RGB); |
? Without that, the vertex colours computed by lighting will have no effect on the texture. Also, you probably don't need per-vertex colours, since you're using lighting. |
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TheBrooster
Joined: 01 Jun 2005
Posts: 16
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| Posted: Thu Feb 02, 2006 9:36 am Post subject: |
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On a similar note. I am trying to modify the cube demo to use a 32 bpp tga, with alpha. The tga loads and renders, but the transparent portions are completely opaque, any ideas?
Here is the setup code
| Code: | void
InitDisplay(void)
{
pspDebugScreenInit();
setupCallbacks();
// setup GU
void* fbp0 = getStaticVramBuffer(BUF_WIDTH,SCR_HEIGHT,GU_PSM_8888);
void* fbp1 = getStaticVramBuffer(BUF_WIDTH,SCR_HEIGHT,GU_PSM_8888);
void* zbp = getStaticVramBuffer(BUF_WIDTH,SCR_HEIGHT,GU_PSM_4444);
sceGuInit();
sceGuStart(GU_DIRECT,list);
sceGuDrawBuffer(GU_PSM_8888,fbp0,BUF_WIDTH);
sceGuDispBuffer(SCR_WIDTH,SCR_HEIGHT,fbp1,BUF_WIDTH);
sceGuDepthBuffer(zbp,BUF_WIDTH);
sceGuOffset(2048 - (SCR_WIDTH/2),2048 - (SCR_HEIGHT/2));
sceGuViewport(2048,2048,SCR_WIDTH,SCR_HEIGHT);
sceGuDepthRange(65535,0);
sceGuScissor(0,0,SCR_WIDTH,SCR_HEIGHT);
sceGuEnable(GU_SCISSOR_TEST);
sceGuFrontFace(GU_CW);
sceGuShadeModel(GU_SMOOTH);
sceGuDepthFunc(GU_GEQUAL);
sceGuEnable(GU_DEPTH_TEST);
sceGuEnable(GU_CULL_FACE);
sceGuEnable(GU_TEXTURE_2D);
sceGuEnable(GU_CLIP_PLANES);
//sceGuAlphaFunc(GU_GREATER, 0, 0xff);
//sceGuEnable(GU_ALPHA_TEST);
// enable alpha channel
sceGuEnable(GU_BLEND);
sceGuBlendFunc(GU_ADD, GU_SRC_ALPHA, GU_ONE_MINUS_SRC_ALPHA, 0, 0);
// setup projection matrix
sceGumMatrixMode(GU_PROJECTION);
sceGumLoadIdentity();
sceGumPerspective(75.0f,16.0f/9.0f,0.5f,1000.0f);
// setup view matrix
sceGumMatrixMode(GU_VIEW);
sceGumLoadIdentity();
// setup model matrix
sceGumMatrixMode(GU_MODEL);
sceGumLoadIdentity();
sceGuAmbientColor(0xffffffff);
sceGuFinish();
sceGuSync(0,0);
sceDisplayWaitVblankStart();
sceGuDisplay(GU_TRUE);
} |
and my render code:
| Code: | void
CRenderer::Render(void)
{
if ( !pImage )
pImage = g_TextureMan.LoadTGA( "Octane.tga");
if ( !pImage )
return;
static float val = 0.f;
sceGumMatrixMode(GU_MODEL);
sceGumLoadIdentity();
{
ScePspFVector3 pos = { 0, 0, -2.5f };
ScePspFVector3 rot = { val * 0.79f * (GU_PI/180.0f), val * 0.98f * (GU_PI/180.0f), val * 1.32f * (GU_PI/180.0f) };
sceGumTranslate(&pos);
sceGumRotateXYZ(&rot);
}
// setup texture
sceGuTexMode( pImage->GetFormat(), pImage->GetNumMipmaps(), 0, pImage->IsSwizzled() );
sceGuTexImage( 0, pImage->GetWidth(), pImage->GetHeight(), pImage->GetWidth(), pImage->GetImageData() );
sceGuTexFunc(GU_TFX_BLEND, GU_TCC_RGBA);
sceGuTexEnvColor(0x00000000);
sceGuTexFilter(GU_LINEAR,GU_LINEAR);
sceGuTexScale(1.0f,1.0f);
sceGuTexOffset(0.0f,0.0f);
// draw test case
sceGumDrawArray(GU_TRIANGLES,GU_TEXTURE_32BITF|GU_COLOR_8888|GU_VERTEX_32BITF|GU_TRANSFORM_3D,12*3,0,vertices);
val += 0.25f;
}
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LuMo
Joined: 21 Aug 2005
Posts: 410
Location: Austria
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| Posted: Thu Feb 02, 2006 7:20 pm Post subject: |
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| jsgf wrote: | You're not calling | Code: | | sceGuTexFunc(GU_TFX_MODULATE, GU_TCC_RGB); |
? Without that, the vertex colours computed by lighting will have no effect on the texture. Also, you probably don't need per-vertex colours, since you're using lighting. |
if i am using modulate the cube is black! (no more textures)
further, by using
GU_TFX_ADD - The texture is added on-top of the diffuse fragment
should do similar (and textures)
still no shading.
@thebrooster
try adding:
greets lumo | Code: | | sceGuTexFunc (GU_TFX_ADD,GU_TCC_RGBA); |
should fix your problem
_________________
"Good artists copy, great artists steal."
Pablo Picasso
go2lumo.com |
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LuMo
Joined: 21 Aug 2005
Posts: 410
Location: Austria
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| Posted: Thu Feb 02, 2006 8:46 pm Post subject: |
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this is my full texture setup:
| Code: | sceGuEnable(GU_TEXTURE_2D);
sceGuTexMode(GU_PSM_8888,0,0,0);
/* Set texture as current texture for the GU */
sceGuTexImage(0,width, height, width, texture);
sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGBA); // adds to vertexpaint
sceGuTexEnvColor(0xffff00);
sceGuTexFilter(GU_LINEAR,GU_LINEAR);
sceGuTexScale(1.0f,1.0f);
sceGuTexOffset(0.0f,0.0f); |
and thats my gu setup: (above the texture setup...)
| Code: | // setup GU
sceGuInit();
sceGuStart(GU_DIRECT, list);
sceGuDrawBuffer(GU_PSM_8888, (void *)0, BUF_WIDTH);
sceGuDispBuffer(SCR_WIDTH, SCR_HEIGHT, (void *)0x88000, BUF_WIDTH);
sceGuDepthBuffer((void *)0x110000, BUF_WIDTH);
sceGuOffset(2048 - (SCR_WIDTH / 2), 2048 - (SCR_HEIGHT / 2));
sceGuViewport(2048, 2048, SCR_WIDTH, SCR_HEIGHT);
sceGuDepthRange(0xc350, 0x2710);
sceGuScissor(0, 0, SCR_WIDTH, SCR_HEIGHT);
sceGuEnable(GU_SCISSOR_TEST);
sceGuDepthFunc(GU_GEQUAL);
sceGuEnable(GU_DEPTH_TEST);
sceGuFrontFace(GU_CCW); //backfaceculling
sceGuShadeModel(GU_SMOOTH);
sceGuEnable(GU_CULL_FACE); //enable faceculling
sceGuEnable(GU_CLIP_PLANES);
//lightning
sceGuEnable(GU_LIGHTING);
sceGuEnable(GU_LIGHT0); |
greets lumo
_________________
"Good artists copy, great artists steal."
Pablo Picasso
go2lumo.com |
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LuMo
Joined: 21 Aug 2005
Posts: 410
Location: Austria
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| Posted: Thu Feb 02, 2006 9:04 pm Post subject: |
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here a full sample of the modded version of the cube
note: normals are NOT correct, jzst random numbers, but that does not really matter, as at least something should be shaded...
its black using
sceGuTexFunc(GU_TFX_MODULATE, GU_TCC_RGB);
and its textured using
sceGuTexFunc(GU_TFX_ADD, GU_TCC_RGB);
if someone gets THIS code running with shading, my problems are solved too :)
| Code: | /*
* PSP Software Development Kit - http://www.pspdev.org
* -----------------------------------------------------------------------
* Licensed under the BSD license, see LICENSE in PSPSDK root for details.
*
* Copyright (c) 2005 Jesper Svennevid
*/
#include <pspkernel.h>
#include <pspdisplay.h>
#include <pspdebug.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <pspgu.h>
#include <pspgum.h>
PSP_MODULE_INFO("Cube Sample", 0, 1, 1);
PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER);
#define printf pspDebugScreenPrintf
static unsigned int __attribute__((aligned(16))) list[262144];
extern unsigned char logo_start[];
struct Vertex
{
float u, v;
unsigned int color;
float nx, ny, nz; // normals
float x,y,z;
};
struct Vertex __attribute__((aligned(16))) vertices[12*3] =
{
{0, 0, 0,0,1, 0xff7f0000,-1,-1, 1}, // 0
{1, 0, 0,1,1, 0xff7f0000,-1, 1, 1}, // 4
{1, 1, 1,1,1, 0xff7f0000, 1, 1, 1}, // 5
{0, 0, 0,0,1, 0xff7f0000,-1,-1, 1}, // 0
{1, 1, 1,1,1, 0xff7f0000, 1, 1, 1}, // 5
{0, 1, 1,0,1, 0xff7f0000, 1,-1, 1}, // 1
{0, 0, 0,0,0, 0xff7f0000,-1,-1,-1}, // 3
{1, 0, 1,0,0, 0xff7f0000, 1,-1,-1}, // 2
{1, 1, 1,1,0, 0xff7f0000, 1, 1,-1}, // 6
{0, 0, 0,0,0, 0xff7f0000,-1,-1,-1}, // 3
{1, 1, 1,1,0, 0xff7f0000, 1, 1,-1}, // 6
{0, 1, 0,1,0, 0xff7f0000,-1, 1,-1}, // 7
{0, 0, 1,0,0, 0xff007f00, 1,-1,-1}, // 0
{1, 0, 1,0,1, 0xff007f00, 1,-1, 1}, // 3
{1, 1, 1,1,1, 0xff007f00, 1, 1, 1}, // 7
{0, 0, 1,0,0, 0xff007f00, 1,-1,-1}, // 0
{1, 1, 1,1,1, 0xff007f00, 1, 1, 1}, // 7
{0, 1, 1,1,0, 0xff007f00, 1, 1,-1}, // 4
{0, 0, 0,0,0, 0xff007f00,-1,-1,-1}, // 0
{1, 0, 0,1,0, 0xff007f00,-1, 1,-1}, // 3
{1, 1, 0,1,1, 0xff007f00,-1, 1, 1}, // 7
{0, 0, 0,0,0, 0xff007f00,-1,-1,-1}, // 0
{1, 1, 0,1,1, 0xff007f00,-1, 1, 1}, // 7
{0, 1, 0,0,1, 0xff007f00,-1,-1, 1}, // 4
{0, 0, 0,1,0, 0xff00007f,-1, 1,-1}, // 0
{1, 0, 1,1,0, 0xff00007f, 1, 1,-1}, // 1
{1, 1, 1,1,1, 0xff00007f, 1, 1, 1}, // 2
{0, 0, 0,1,0, 0xff00007f,-1, 1,-1}, // 0
{1, 1, 1,1,1, 0xff00007f, 1, 1, 1}, // 2
{0, 1, 0,1,1, 0xff00007f,-1, 1, 1}, // 3
{0, 0, 0,0,0, 0xff00007f,-1,-1,-1}, // 4
{1, 0, 0,0,1, 0xff00007f,-1,-1, 1}, // 7
{1, 1, 1,0,1, 0xff00007f, 1,-1, 1}, // 6
{0, 0, 0,0,0, 0xff00007f,-1,-1,-1}, // 4
{1, 1, 1,0,1, 0xff00007f, 1,-1, 1}, // 6
{0, 1, 1,0,0, 0xff00007f, 1,-1,-1}, // 5
};
int SetupCallbacks();
#define BUF_WIDTH (512)
#define SCR_WIDTH (480)
#define SCR_HEIGHT (272)
#define PIXEL_SIZE (4) /* change this if you change to another screenmode */
#define FRAME_SIZE (BUF_WIDTH * SCR_HEIGHT * PIXEL_SIZE)
#define ZBUF_SIZE (BUF_WIDTH SCR_HEIGHT * 2) /* zbuffer seems to be 16-bit? */
int main(int argc, char* argv[])
{
SetupCallbacks();
// setup GU
sceGuInit();
sceGuStart(GU_DIRECT,list);
sceGuDrawBuffer(GU_PSM_8888,(void*)0,BUF_WIDTH);
sceGuDispBuffer(SCR_WIDTH,SCR_HEIGHT,(void*)0x88000,BUF_WIDTH);
sceGuDepthBuffer((void*)0x110000,BUF_WIDTH);
sceGuOffset(2048 - (SCR_WIDTH/2),2048 - (SCR_HEIGHT/2));
sceGuViewport(2048,2048,SCR_WIDTH,SCR_HEIGHT);
sceGuDepthRange(0xc350,0x2710);
sceGuScissor(0,0,SCR_WIDTH,SCR_HEIGHT);
sceGuEnable(GU_SCISSOR_TEST);
sceGuDepthFunc(GU_GEQUAL);
sceGuEnable(GU_DEPTH_TEST);
sceGuFrontFace(GU_CW);
sceGuShadeModel(GU_SMOOTH);
sceGuEnable(GU_CULL_FACE);
sceGuEnable(GU_TEXTURE_2D);
sceGuEnable(GU_CLIP_PLANES);
sceGuFinish();
sceGuSync(0,0);
sceDisplayWaitVblankStart();
sceGuDisplay(GU_TRUE);
// run sample
int val = 0;
for(;;)
{
sceGuStart(GU_DIRECT,list);
// clear screen
sceGuClearColor(0xff554433);
sceGuClearDepth(0);
sceGuClear(GU_COLOR_BUFFER_BIT|GU_DEPTH_BUFFER_BIT);
// setup matrices for cube
sceGumMatrixMode(GU_PROJECTION);
sceGumLoadIdentity();
sceGumPerspective(75.0f,16.0f/9.0f,0.5f,1000.0f);
sceGumMatrixMode(GU_VIEW);
sceGumLoadIdentity();
sceGumMatrixMode(GU_MODEL);
sceGumLoadIdentity();
{
ScePspFVector3 pos = { 0, 0, -2.5f };
ScePspFVector3 rot = { val * 0.79f * (GU_PI/180.0f), val * 0.98f * (GU_PI/180.0f), val * 1.32f * (GU_PI/180.0f) };
sceGumTranslate(&pos);
sceGumRotateXYZ(&rot);
}
// setup texture
sceGuTexMode(GU_PSM_4444,0,0,0);
sceGuTexImage(0,64,64,64,logo_start);
//sceGuTexFunc(GU_TFX_ADD,GU_TCC_RGB);
sceGuTexFunc(GU_TFX_MODULATE, GU_TCC_RGB);
sceGuTexEnvColor(0xffff00);
sceGuTexFilter(GU_LINEAR,GU_LINEAR);
sceGuTexScale(1.0f,1.0f);
sceGuTexOffset(0.0f,0.0f);
sceGuAmbientColor(0xffffffff);
// draw cube
sceGumDrawArray(GU_TRIANGLES,GU_TEXTURE_32BITF | GU_COLOR_8888 | GU_NORMAL_32BITF |GU_VERTEX_32BITF|GU_TRANSFORM_3D,12*3,0,vertices);
sceGuFinish();
sceGuSync(0,0);
sceDisplayWaitVblankStart();
sceGuSwapBuffers();
val++;
}
sceGuTerm();
sceKernelExitGame();
return 0;
}
/* Exit callback */
int exit_callback(int arg1, int arg2, void *common)
{
sceKernelExitGame();
return 0;
}
/* Callback thread */
int CallbackThread(SceSize args, void *argp)
{
int cbid;
cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
sceKernelRegisterExitCallback(cbid);
sceKernelSleepThreadCB();
return 0;
}
/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void)
{
int thid = 0;
thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
if(thid >= 0)
{
sceKernelStartThread(thid, 0, 0);
}
return thid;
}
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_________________
"Good artists copy, great artists steal."
Pablo Picasso
go2lumo.com |
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TheBrooster
Joined: 01 Jun 2005
Posts: 16
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| Posted: Fri Feb 03, 2006 2:17 am Post subject: |
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| Cheers Lumo, I will give it a go when I get home from work. |
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LuMo
Joined: 21 Aug 2005
Posts: 410
Location: Austria
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| Posted: Fri Feb 03, 2006 2:24 am Post subject: |
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ok i got it working
note: never use a white texture and white shading ;)
greets
lumo
PS: msg me if you need help
_________________
"Good artists copy, great artists steal."
Pablo Picasso
go2lumo.com |
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