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Fixed more weirdness in functions using glGetTexImage(), add proper bounds checking

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This commit is contained in:
fgenesis 2012-06-14 17:40:01 +02:00
parent a6fc88d885
commit 6d92cd24c8
2 changed files with 65 additions and 87 deletions
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75
Aquaria/Game.cpp
View file

@ -1977,8 +1977,8 @@ void Game::fillGridFromQuad(Quad *q, ObsType obsType, bool trim)
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &h);
//glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_COMPONENTS, &c);// assume 4
int size = w*h*4;
if(size <= 0)
unsigned int size = w*h*4;
if (!size || w <= 0 || h <= 0)
return;
unsigned char *data = (unsigned char*)malloc(size + 6);
memcpy(data + size, "SAFE", 5);
@ -2014,12 +2014,12 @@ void Game::fillGridFromQuad(Quad *q, ObsType obsType, bool trim)
{
// starting position =
// tx / scale.x
int px = int(tx/q->scale.x) + x;
int py = int(ty/q->scale.y) + y;
if (px < w && py < h)
unsigned int px = int(tx/q->scale.x) + x;
unsigned int py = int(ty/q->scale.y) + y;
if (px < unsigned(w) && py < unsigned(h))
{
int p = (py*w*4) + px*4;
if (data[p+3] >= 254)
unsigned int p = (py*unsigned(w)*4) + (px*4) + 3; // position of alpha component
if (p < size && data[p] >= 254)
{
num ++;
}
@ -2794,32 +2794,27 @@ void Game::generateCollisionMask(Quad *q, int overrideCollideRadius)
else
q->collideRadius = TILE_SIZE/2;
q->collisionMask.clear();
std::vector<TileVector> obs;
TileVector tpos(q->position);
int w2 = int(q->getWidth()*q->scale.x)>>1;
int h2 = int(q->getHeight()*q->scale.y)>>1;
int widthscale = q->getWidth()*q->scale.x;
int heightscale = q->getHeight()*q->scale.y;
int w2 = widthscale/2;
int h2 = heightscale/2;
w2/=TILE_SIZE;
h2/=TILE_SIZE;
tpos.x -= w2;
tpos.y -= h2;
GLuint id = q->texture->textures[0];
float w, h, c=4;
int w = 0, h = 0;
glBindTexture(GL_TEXTURE_2D, id);
glGetTexLevelParameterfv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
glGetTexLevelParameterfv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &h);
//glGetTexLevelParameterfv(GL_TEXTURE_2D, 0, GL_TEXTURE_COMPONENTS, &c);// assume 4
int size = w*h*c;
unsigned char *data=0;
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &h);
//glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_COMPONENTS, &c);// assume 4
int sz = size*sizeof(unsigned char);
unsigned int size = w*h*4;
if (!size || w <= 0 || h <= 0)
return;
/*
std::ostringstream os;
os << "size: " << sz;
debugLog(os.str());
*/
data = (unsigned char*)malloc(sz);
unsigned char *data = (unsigned char*)malloc(size);
if (!data)
{
@ -2832,34 +2827,29 @@ void Game::generateCollisionMask(Quad *q, int overrideCollideRadius)
Vector collisionMaskHalfVector = Vector(q->getWidth()/2, q->getHeight()/2);
for (int tx = 0; tx < (q->getWidth()*q->scale.x); tx+=TILE_SIZE)
{
for (int ty = 0; ty < (q->getHeight()*q->scale.y); ty+=TILE_SIZE)
{
int num = 0;
int szx = TILE_SIZE/q->scale.x;
int szy = TILE_SIZE/q->scale.y;
if (szx < 1) szx = 1;
if (szy < 1) szy = 1;
for (int tx = 0; tx < widthscale; tx+=TILE_SIZE)
{
for (int ty = 0; ty < heightscale; ty+=TILE_SIZE)
{
int num = 0;
for (int x = 0; x < szx; x++)
{
for (int y = 0; y < szy; y++)
{
// starting position =
// tx / scale.x
int px = int(tx/q->scale.x) + x;
int py = int(ty/q->scale.y) + y;
if (px < w && py < h)
unsigned int px = int(tx/q->scale.x) + x;
unsigned int py = int(ty/q->scale.y) + y;
if (px < unsigned(w) && py < unsigned(h))
{
int p = (py*w*c) + px*c;
/*
std::ostringstream os;
os << "data(" << int(data[p]) << ", " << int(data[p+1]);
os << ", " << int(data[p+2]) << ", " << int(data[p+3]) << ")";
debugLog(os.str());
*/
if (int(data[p+3]) >= 250)
unsigned int p = (py*unsigned(w)*4) + (px*4) + 3; // position of alpha component
if (p < size && data[p] >= 250)
{
num ++;
}
@ -2869,9 +2859,6 @@ void Game::generateCollisionMask(Quad *q, int overrideCollideRadius)
if (num >= int((szx*szy)*0.25f))
{
TileVector tile(int((tx+TILE_SIZE/2)/TILE_SIZE), int((ty+TILE_SIZE/2)/TILE_SIZE));
obs.push_back(tile);
// + Vector(0,TILE_SIZE)
q->collisionMask.push_back(tile.worldVector() - collisionMaskHalfVector);
}
@ -2903,7 +2890,7 @@ void Game::generateCollisionMask(Quad *q, int overrideCollideRadius)
q->collisionMaskRadius = 512;
glBindTexture(GL_TEXTURE_2D, 0);
if (data) free(data);
free(data);
/*
int rot = rotation.z;
while (rot > 360)

73
BBGE/Texture.cpp
View file

@ -194,34 +194,31 @@ void Texture::destroy()
int Texture::getPixelWidth()
{
#ifdef BBGE_BUILD_OPENGL
float w, h, c;
int w = 0, h = 0;
glBindTexture(GL_TEXTURE_2D, textures[0]);
glGetTexLevelParameterfv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
glGetTexLevelParameterfv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &h);
glGetTexLevelParameterfv(GL_TEXTURE_2D, 0, GL_TEXTURE_COMPONENTS, &c);// assume 4
int size = w*h*c;
unsigned char *data=0;
data = (unsigned char*)malloc(size*sizeof(char));
if (c == 4)
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
/*
else if (c == 3)
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
*/
else
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &h);
//glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_COMPONENTS, &c);// assume 4
unsigned int size = w*h*4;
if (!size || w <= 0 || h <= 0)
return 0;
unsigned char *data = (unsigned char*)malloc(size*sizeof(char));
if (!data)
{
if (data)
free(data);
debugLog("Texture::getPixelWidth() malloc failed");
return 0;
}
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
int smallestx = -1, largestx = -1;
for (int x = 0; x < w; x++)
for (unsigned int x = 0; x < unsigned(w); x++)
{
for (int y = 0; y < h; y++)
for (unsigned int y = 0; y < unsigned(h); y++)
{
int p = (y*w*c) + x*c;
if (data[p+3] >= 254)
unsigned int p = (y*unsigned(w)*4) + (x*4) + 3;
if (p < size && data[p] >= 254)
{
if (smallestx == -1 || x < smallestx)
smallestx = x;
@ -241,33 +238,28 @@ int Texture::getPixelWidth()
int Texture::getPixelHeight()
{
#ifdef BBGE_BUILD_OPENGL
float w, h, c;
int w = 0, h = 0;
glBindTexture(GL_TEXTURE_2D, textures[0]);
glGetTexLevelParameterfv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
glGetTexLevelParameterfv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &h);
glGetTexLevelParameterfv(GL_TEXTURE_2D, 0, GL_TEXTURE_COMPONENTS, &c);// assume 4
int size = w*h*c;
unsigned char *data=0;
data = (unsigned char*)malloc(size*sizeof(char));
if (c == 4)
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
/*
else if (c == 3)
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
*/
else
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &h);
//glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_COMPONENTS, &c);// assume 4
unsigned int size = w*h*4;
if (!size || w <= 0 || h <= 0)
return 0;
unsigned char *data = (unsigned char*)malloc(size*sizeof(char));
if (!data)
{
if (data)
free(data);
debugLog("Texture::getPixelHeight() malloc failed");
return 0;
}
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
int smallesty = -1, largesty = -1;
for (int x = 0; x < w; x++)
for (unsigned int x = 0; x < unsigned(w); x++)
{
for (int y = 0; y < h; y++)
for (unsigned int y = 0; y < unsigned(h); y++)
{
int p = (y*w*c) + x*c;
if (data[p+3] >= 254)
int p = (y*unsigned(w)*4) + (x*4) + 3;
if (p < size && data[p] >= 254)
{
if (smallesty == -1 || y < smallesty)
smallesty = y;
@ -277,7 +269,6 @@ int Texture::getPixelHeight()
}
}
glBindTexture(GL_TEXTURE_2D, 0);
if (data)
free(data);
return largesty - smallesty;
#elif defined(BBGE_BUILD_DIRECTX)