112 lines
2.8 KiB
C++
112 lines
2.8 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/*
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* This file is based on, or a modified version of code from TinyGL (C) 1997-2022 Fabrice Bellard,
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* which is licensed under the MIT license (see LICENSE).
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* It also has modifications by the ResidualVM-team, which are covered under the GPLv2 (or later).
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*/
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#include "graphics/tinygl/zgl.h"
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namespace TinyGL {
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void GLContext::gl_GetIntegerv(TGLenum pname, TGLint *data) {
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switch (pname) {
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case TGL_VIEWPORT:
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data[0] = viewport.xmin;
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data[1] = viewport.ymin;
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data[2] = viewport.xsize;
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data[3] = viewport.ysize;
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break;
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case TGL_MAX_MODELVIEW_STACK_DEPTH:
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*data = MAX_MODELVIEW_STACK_DEPTH;
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break;
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case TGL_MAX_PROJECTION_STACK_DEPTH:
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*data = MAX_PROJECTION_STACK_DEPTH;
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break;
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case TGL_MAX_LIGHTS:
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*data = T_MAX_LIGHTS;
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break;
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case TGL_MAX_TEXTURE_SIZE:
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*data = _textureSize;
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break;
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case TGL_MAX_TEXTURE_STACK_DEPTH:
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*data = MAX_TEXTURE_STACK_DEPTH;
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break;
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case TGL_BLEND:
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*data = blending_enabled;
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break;
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case TGL_ALPHA_TEST:
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*data = alpha_test_enabled;
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break;
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case TGL_DEPTH_TEST:
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*data = depth_test_enabled;
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break;
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case TGL_STENCIL_TEST:
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*data = stencil_test_enabled;
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break;
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default:
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error("tglGet: option not implemented");
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break;
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}
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}
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void GLContext::gl_GetFloatv(TGLenum pname, TGLfloat *data) {
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int mnr = 0; // just a trick to return the correct matrix
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switch (pname) {
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case TGL_TEXTURE_MATRIX:
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mnr++;
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// fall through
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case TGL_PROJECTION_MATRIX:
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mnr++;
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// fall through
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case TGL_MODELVIEW_MATRIX: {
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float *p = &matrix_stack_ptr[mnr]->_m[0][0];
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for (int i = 0; i < 4; i++) {
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*data++ = p[0];
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*data++ = p[4];
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*data++ = p[8];
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*data++ = p[12];
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p++;
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}
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}
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break;
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case TGL_LINE_WIDTH:
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*data = 1.0f;
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break;
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case TGL_LINE_WIDTH_RANGE:
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data[0] = data[1] = 1.0f;
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break;
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case TGL_POINT_SIZE:
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*data = 1.0f;
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break;
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case TGL_POINT_SIZE_RANGE:
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data[0] = data[1] = 1.0f;
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break;
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default:
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warning("gl_GetFloatv: unknown pname");
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break;
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}
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}
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} // end of namespace TinyGL
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