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LibGL: Implement Texture State Management

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Some very primitive Texture State management. Data can now be
uploaded to textures.
This commit is contained in:
Jesse Buhagiar 2021-05-13 22:18:17 +10:00 • committed by Ali Mohammad Pur
parent 21dff6d40b
commit 4f324ba4d7
8 changed files with 309 additions and 0 deletions
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63
Userland/Libraries/LibGL/SoftwareGLContext.cpp
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@ -755,6 +755,13 @@ void SoftwareGLContext::gl_gen_textures(GLsizei n, GLuint* textures)
}
m_name_allocator.allocate(n, textures);
// Let's allocate a new texture for each texture name
for (auto i = 0; i < n; i++) {
GLuint name = textures[i];
m_allocated_textures.set(name, adopt_ref(*new Texture()));
}
}
void SoftwareGLContext::gl_delete_textures(GLsizei n, const GLuint* textures)
@ -770,6 +777,62 @@ void SoftwareGLContext::gl_delete_textures(GLsizei n, const GLuint* textures)
}
m_name_allocator.free(n, textures);
// Let's allocate a new texture for each texture name
for (auto i = 0; i < n; i++) {
GLuint name = textures[i];
m_allocated_textures.remove(name);
}
}
void SoftwareGLContext::gl_tex_image_2d(GLenum target, GLint level, GLint internal_format, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid* data)
{
if (m_in_draw_state) {
m_error = GL_INVALID_OPERATION;
return;
}
// We only support GL_TEXTURE_2D for now
if (target != GL_TEXTURE_2D) {
m_error = GL_INVALID_ENUM;
return;
}
// We only support symbolic constants for now
if (!(internal_format == GL_RGB || internal_format == GL_RGBA)) {
m_error = GL_INVALID_VALUE;
return;
}
if (type != GL_UNSIGNED_BYTE) {
m_error = GL_INVALID_VALUE;
return;
}
if (level < 0 || level > Texture::LOG2_MAX_TEXTURE_SIZE) {
m_error = GL_INVALID_VALUE;
return;
}
if (width < 0 || height < 0 || width > (2 + Texture::MAX_TEXTURE_SIZE) || height > (2 + Texture::MAX_TEXTURE_SIZE)) {
m_error = GL_INVALID_VALUE;
return;
}
if ((width & 2) != 0 || (height & 2) != 0) {
m_error = GL_INVALID_VALUE;
return;
}
if (border < 0 || border > 1) {
m_error = GL_INVALID_VALUE;
return;
}
// TODO: Load texture from the currently active texture unit
// This is to test the functionality of texture data upload
m_allocated_textures.find(1)->value->upload_texture_data(target, level, internal_format, width, height, border, format, type, data);
}
void SoftwareGLContext::gl_front_face(GLenum face)