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LibGL: Implement glTexEnvf

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This controls how fetched texels are combined with the color that was
produced by a preceding texture unit or with the vertex color if it is
the first texture unit.

Currently only a small subset of possible combine modes is implemented
as required by glquake.
This commit is contained in:
Stephan Unverwerth 2021-08-21 13:59:13 +02:00 • committed by Andreas Kling
parent 19a08ff187
commit b54573739c
7 changed files with 66 additions and 7 deletions
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30
Userland/Libraries/LibGL/SoftwareGLContext.cpp
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@ -1482,6 +1482,36 @@ void SoftwareGLContext::gl_tex_coord_pointer(GLint size, GLenum type, GLsizei st
m_client_tex_coord_pointer.pointer = pointer;
}
void SoftwareGLContext::gl_tex_env(GLenum target, GLenum pname, GLfloat param)
{
APPEND_TO_CALL_LIST_AND_RETURN_IF_NEEDED(gl_tex_env, target, pname, param);
RETURN_WITH_ERROR_IF(m_in_draw_state, GL_INVALID_OPERATION);
if (target == GL_TEXTURE_ENV) {
if (pname == GL_TEXTURE_ENV_MODE) {
auto param_enum = static_cast<GLenum>(param);
switch (param_enum) {
case GL_MODULATE:
case GL_REPLACE:
case GL_DECAL:
m_active_texture_unit->set_env_mode(param_enum);
break;
default:
// FIXME: We currently only support a subset of possible param values. Implement the rest!
RETURN_WITH_ERROR_IF(true, GL_INVALID_ENUM);
break;
}
} else {
// FIXME: We currently only support a subset of possible pname values. Implement the rest!
RETURN_WITH_ERROR_IF(true, GL_INVALID_ENUM);
}
} else {
// FIXME: We currently only support a subset of possible target values. Implement the rest!
RETURN_WITH_ERROR_IF(true, GL_INVALID_ENUM);
}
}
void SoftwareGLContext::gl_draw_arrays(GLenum mode, GLint first, GLsizei count)
{
APPEND_TO_CALL_LIST_AND_RETURN_IF_NEEDED(gl_draw_arrays, mode, first, count);