tei/MapLibreParticleLab
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

do not reallocate the texture data on every update; use glTexSubImage2D instead

Browse Source
This commit is contained in:
Konstantin Käfer
2014-07-15 17:01:00 -07:00
parent 5459d80d47
commit c2efeaf876
1 changed files with 31 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
src/geometry/sprite_atlas.cpp
View File

@@ -251,11 +251,13 @@ void SpriteAtlas::update(const Sprite &sprite) {
}
void SpriteAtlas::bind(bool linear) {
bool first = false;
if (!texture) {
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
first = true;
} else {
glBindTexture(GL_TEXTURE_2D, texture);
}
@@ -270,17 +272,31 @@ void SpriteAtlas::bind(bool linear) {
if (dirty) {
std::lock_guard<std::mutex> lock(mtx);
allocate();
glTexImage2D(
GL_TEXTURE_2D, // GLenum target
0, // GLint level
GL_RGBA, // GLint internalformat
width * pixelRatio, // GLsizei width
height * pixelRatio, // GLsizei height
0, // GLint border
GL_RGBA, // GLenum format
GL_UNSIGNED_BYTE, // GLenum type
data // const GLvoid * data
);
if (first) {
glTexImage2D(
GL_TEXTURE_2D, // GLenum target
0, // GLint level
GL_RGBA, // GLint internalformat
width * pixelRatio, // GLsizei width
height * pixelRatio, // GLsizei height
0, // GLint border
GL_RGBA, // GLenum format
GL_UNSIGNED_BYTE, // GLenum type
data // const GLvoid * data
);
} else {
glTexSubImage2D(GL_TEXTURE_2D, // GLenum target
0, // GLint level
0, // GLint xoffset
0, // GLint yoffset
width * pixelRatio, // GLsizei width
height * pixelRatio, // GLsizei height
GL_RGBA, // GLenum format
GL_UNSIGNED_BYTE, // GLenum type
data // const GLvoid *pixels
);
}
#if defined(DEBUG)
// platform::show_color_debug_image("Sprite Atlas", data, width, height, width * pixelRatio, height * pixelRatio);
@@ -291,6 +307,10 @@ void SpriteAtlas::bind(bool linear) {
SpriteAtlas::~SpriteAtlas() {
std::lock_guard<std::mutex> lock(mtx);
glDeleteTextures(1, &texture);
texture = 0;
if (data) {
free(data);
data = nullptr;