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fix issue with rgb + alpha movie textures

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This commit is contained in:
David Rose 2012-08-07 19:25:03 +00:00
parent 1e644853ef
commit 8b53d19a68
1 changed files with 6 additions and 6 deletions
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12
panda/src/movies/movieVideoCursor.cxx
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@ -211,24 +211,24 @@ apply_to_texture_alpha(const Buffer *buffer, Texture *t, int page, int alpha_src
unsigned char *data = img.p() + page * t->get_expected_ram_page_size();
PStatTimer timer2(_copy_pcollector_copy);
int src_stride = size_x() * get_num_components();
int src_width = get_num_components();
int src_stride = size_x() * src_width;
int dst_stride = t->get_x_size() * 4;
unsigned char *p = buffer->_block;
if (alpha_src == 0) {
unsigned char *p = buffer->_block;
for (int y=0; y<size_y(); y++) {
for (int x=0; x<size_x(); x++) {
data[x*4+3] = (p[x*4+0] + p[x*4+1] + p[x*4+2]) / 3;
unsigned char *pp = &p[x * src_width];
data[x*4+3] = (pp[0] + pp[1] + pp[2]) / 3;
}
data += dst_stride;
p += src_stride;
}
} else {
alpha_src -= 1;
unsigned char *p = buffer->_block;
int src_width = get_num_components();
for (int y=0; y<size_y(); y++) {
for (int x=0; x<size_x(); x++) {
data[x*4+3] = p[x *src_width + alpha_src];
data[x*4+3] = p[x * src_width + alpha_src];
}
data += dst_stride;
p += src_stride;