142 lines
4.4 KiB
C++
142 lines
4.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "alcachofa/graphics-opengl-base.h"
|
|
|
|
#include "common/config-manager.h"
|
|
#include "common/system.h"
|
|
#include "graphics/renderer.h"
|
|
|
|
using namespace Common;
|
|
using namespace Graphics;
|
|
using namespace Math;
|
|
|
|
namespace Alcachofa {
|
|
|
|
OpenGLRendererBase::OpenGLRendererBase(Point resolution) : _resolution(resolution) {}
|
|
|
|
bool OpenGLRendererBase::hasOutput() const {
|
|
return _currentOutput != nullptr;
|
|
}
|
|
|
|
void OpenGLRendererBase::resetState() {
|
|
setViewportToScreen();
|
|
_currentOutput = nullptr;
|
|
_currentLodBias = -1000.0f;
|
|
_currentBlendMode = (BlendMode)-1;
|
|
_isFirstDrawCommand = true;
|
|
}
|
|
|
|
void OpenGLRendererBase::setViewportToScreen() {
|
|
int32 screenWidth = g_system->getWidth();
|
|
int32 screenHeight = g_system->getHeight();
|
|
Rect viewport(
|
|
MIN<int32>(screenWidth, screenHeight * (float)_resolution.x / _resolution.y),
|
|
MIN<int32>(screenHeight, screenWidth * (float)_resolution.y / _resolution.x));
|
|
viewport.translate(
|
|
(screenWidth - viewport.width()) / 2,
|
|
(screenHeight - viewport.height()) / 2);
|
|
|
|
setViewportInner(viewport.left, viewport.top, viewport.width(), viewport.height());
|
|
setMatrices(true);
|
|
}
|
|
|
|
void OpenGLRendererBase::setViewportToRect(int16 outputWidth, int16 outputHeight) {
|
|
_outputSize.x = MIN(outputWidth, g_system->getWidth());
|
|
_outputSize.y = MIN(outputHeight, g_system->getHeight());
|
|
setViewportInner(0, 0, _outputSize.x, _outputSize.y);
|
|
setMatrices(false);
|
|
}
|
|
|
|
void OpenGLRendererBase::getQuadPositions(Vector2d topLeft, Vector2d size, Angle rotation, Vector2d positions[]) const {
|
|
positions[0] = topLeft + Vector2d(0, 0);
|
|
positions[1] = topLeft + Vector2d(0, +size.getY());
|
|
positions[2] = topLeft + Vector2d(+size.getX(), +size.getY());
|
|
positions[3] = topLeft + Vector2d(+size.getX(), 0);
|
|
if (abs(rotation.getDegrees()) > epsilon) {
|
|
const Vector2d zero(0, 0);
|
|
for (int i = 0; i < 4; i++)
|
|
positions[i].rotateAround(zero, rotation);
|
|
}
|
|
}
|
|
|
|
void OpenGLRendererBase::getQuadTexCoords(Vector2d texMin, Vector2d texMax, Vector2d texCoords[]) const {
|
|
texCoords[0] = { texMin.getX(), texMin.getY() };
|
|
texCoords[1] = { texMin.getX(), texMax.getY() };
|
|
texCoords[2] = { texMax.getX(), texMax.getY() };
|
|
texCoords[3] = { texMax.getX(), texMin.getY() };
|
|
}
|
|
|
|
IRenderer *IRenderer::createOpenGLRenderer(Point resolution) {
|
|
const auto available = Renderer::getAvailableTypes();
|
|
const auto &rendererCode = ConfMan.get("renderer");
|
|
RendererType rendererType = Renderer::parseTypeCode(rendererCode);
|
|
rendererType = (RendererType)(rendererType & available);
|
|
|
|
IRenderer *renderer = nullptr;
|
|
switch (rendererType) {
|
|
case kRendererTypeOpenGLShaders:
|
|
renderer = createOpenGLRendererShaders(resolution);
|
|
break;
|
|
case kRendererTypeOpenGL:
|
|
renderer = createOpenGLRendererClassic(resolution);
|
|
break;
|
|
case kRendererTypeTinyGL:
|
|
renderer = createTinyGLRenderer(resolution);
|
|
break;
|
|
default:
|
|
if (available & kRendererTypeOpenGLShaders)
|
|
renderer = createOpenGLRendererShaders(resolution);
|
|
else if (available & kRendererTypeOpenGL)
|
|
renderer = createOpenGLRendererClassic(resolution);
|
|
else if (available & kRendererTypeTinyGL)
|
|
renderer = createTinyGLRenderer(resolution);
|
|
break;
|
|
}
|
|
|
|
if (renderer == nullptr)
|
|
error("Could not create a renderer, available: %d", (int)available);
|
|
return renderer;
|
|
}
|
|
|
|
#ifndef USE_OPENGL_SHADERS
|
|
IRenderer *IRenderer::createOpenGLRendererShaders(Point _) {
|
|
(void)_;
|
|
return nullptr;
|
|
}
|
|
#endif
|
|
|
|
#ifndef USE_OPENGL_GAME
|
|
IRenderer *IRenderer::createOpenGLRendererClassic(Point _) {
|
|
(void)_;
|
|
return nullptr;
|
|
}
|
|
#endif
|
|
|
|
#ifndef USE_TINYGL
|
|
IRenderer *IRenderer::createTinyGLRenderer(Point _) {
|
|
(void)_;
|
|
return nullptr;
|
|
}
|
|
#endif
|
|
|
|
}
|