type(type),
pbo(0),
texture_num(0),
- needs_update(false),
finalized(false),
output_linear_gamma(false),
needs_mipmaps(false),
void FlatInput::finalize()
{
// Translate the input format to OpenGL's enums.
- GLenum internal_format;
if (type == GL_FLOAT) {
internal_format = GL_RGBA32F_ARB;
} else if (output_linear_gamma) {
assert(false);
}
- // Create the texture itself.
- texture_num = resource_pool->create_2d_texture(internal_format, width, height);
- glBindTexture(GL_TEXTURE_2D, texture_num);
- check_error();
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, needs_mipmaps ? GL_LINEAR_MIPMAP_NEAREST : GL_LINEAR);
- check_error();
- glBindTexture(GL_TEXTURE_2D, 0);
- check_error();
-
- needs_update = true;
finalized = true;
}
{
glActiveTexture(GL_TEXTURE0 + *sampler_num);
check_error();
- glBindTexture(GL_TEXTURE_2D, texture_num);
- check_error();
- glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
- check_error();
- if (needs_update) {
- // Re-upload the texture.
+ if (texture_num == 0) {
+ // (Re-)upload the texture.
+ texture_num = resource_pool->create_2d_texture(internal_format, width, height);
+ glBindTexture(GL_TEXTURE_2D, texture_num);
+ check_error();
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
check_error();
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, needs_mipmaps ? GL_LINEAR_MIPMAP_NEAREST : GL_LINEAR);
+ check_error();
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
check_error();
glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch);
check_error();
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, type, pixel_data);
check_error();
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+ check_error();
if (needs_mipmaps) {
glGenerateMipmap(GL_TEXTURE_2D);
check_error();
check_error();
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
check_error();
-
- needs_update = false;
+ } else {
+ glBindTexture(GL_TEXTURE_2D, texture_num);
+ check_error();
}
// Bind it to a sampler.
{
return read_file("flat_input.frag");
}
+
+void FlatInput::invalidate_pixel_data()
+{
+ if (texture_num != 0) {
+ resource_pool->release_2d_texture(texture_num);
+ texture_num = 0;
+ }
+}