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LibAccelGfx+LibWeb: Use framebuffer object instead of EGLs PBuffer

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Framebuffer object is allocated using OpenGL's API and is not platform
specific which means it could be used on both macOS and Linux unlike
EGL specific PBuffer.
This commit is contained in:
Aliaksandr Kalenik 2023-11-11 17:34:44 +01:00 • committed by Andreas Kling
parent 99caf4e649
commit 6d1a1daff9
12 changed files with 70 additions and 132 deletions
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35
Userland/Libraries/LibAccelGfx/GL.cpp
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@ -220,4 +220,39 @@ void delete_vertex_array(VertexArray const& vertex_array)
verify_no_error();
}
Framebuffer create_framebuffer(Gfx::IntSize size)
{
GLuint texture;
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, size.width(), size.height(), 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
GLuint fbo;
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
VERIFY_NOT_REACHED();
}
verify_no_error();
return { fbo, texture };
}
void bind_framebuffer(Framebuffer const& framebuffer)
{
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.fbo_id);
verify_no_error();
}
void delete_framebuffer(Framebuffer const& framebuffer)
{
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.fbo_id);
glDeleteFramebuffers(1, &framebuffer.fbo_id);
glDeleteTextures(1, &framebuffer.texture_id);
verify_no_error();
}
}