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Use direct texture conversions to lower cpu usage
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This commit is contained in:
Lorenzooone
2024-11-02 04:39:29 +01:00
parent 3054d5ad9b
commit 3f650ffdaf
5 changed files with 40 additions and 32 deletions
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19
source/WindowScreen.cpp
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@@ -432,13 +432,30 @@ std::string WindowScreen::title_factory() {
return title;
}
// These values may be undefined under Windows...
#ifndef GL_BGR
#define GL_BGR 0x80e0
#endif
#ifndef GL_UNSIGNED_SHORT_5_6_5_REV
#define GL_UNSIGNED_SHORT_5_6_5_REV 0x8364
#endif
void WindowScreen::update_texture() {
unsigned int m_texture = this->in_tex.getNativeHandle();
if (this->saved_buf && m_texture)
{
// Copy pixels from the given array to the texture
glBindTexture(GL_TEXTURE_2D, m_texture);
glTexSubImage2D(GL_TEXTURE_2D, 0, static_cast<GLint>(0), static_cast<GLint>(0), static_cast<GLsizei>(this->capture_status->device.width), static_cast<GLsizei>(this->capture_status->device.height), GL_RGB, GL_UNSIGNED_BYTE, this->saved_buf);
GLenum format = GL_RGB;
GLenum type = GL_UNSIGNED_BYTE;
if(this->capture_status->device.video_data_type == VIDEO_DATA_BGR)
format = GL_BGR;
if(this->capture_status->device.video_data_type == VIDEO_DATA_BGR16) {
format = GL_RGB;
type = GL_UNSIGNED_SHORT_5_6_5_REV;
}
glTexSubImage2D(GL_TEXTURE_2D, 0, static_cast<GLint>(0), static_cast<GLint>(0), static_cast<GLsizei>(this->capture_status->device.width), static_cast<GLsizei>(this->capture_status->device.height), format, type, this->saved_buf);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
// Force an OpenGL flush, so that the texture data will appear updated