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/* 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 "engines/playground3d/gfx.h"
#include "engines/util.h"
#include "common/config-manager.h"
#include "graphics/renderer.h"
#include "graphics/surface.h"
#if defined(USE_OPENGL_GAME) || defined(USE_OPENGL_SHADERS)
#include "graphics/opengl/context.h"
#endif
#include "math/glmath.h"
namespace Playground3d {
const float Renderer::cubeVertices[] = {
// S T X Y Z NX NY NZ R G B
0.0f, 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, // blue
1.0f, 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, // magenta
0.0f, 0.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, // cyan
1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, // white
0.0f, 1.0f, 1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f, 0.0f, // red
1.0f, 1.0f, -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, // black
0.0f, 0.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f, 0.0f, // yellow
1.0f, 0.0f, -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f, // green
0.0f, 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, // magenta
1.0f, 1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, // red
0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, // white
1.0f, 0.0f, 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, // yellow
0.0f, 1.0f, -1.0f, -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, // black
1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, // blue
0.0f, 0.0f, -1.0f, 1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, // green
1.0f, 0.0f, -1.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, // cyan
0.0f, 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, // cyan
1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, // white
0.0f, 0.0f, -1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, // green
1.0f, 0.0f, 1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, // yellow
0.0f, 1.0f, -1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, // black
1.0f, 1.0f, 1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f, 0.0f, // red
0.0f, 0.0f, -1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f, // blue
1.0f, 0.0f, 1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f, 1.0f // magenta
};
Renderer::Renderer(OSystem *system)
: _system(system), _texture(nullptr) {
}
Renderer::~Renderer() {
}
Common::Rect Renderer::viewport() const {
return _screenViewport;
}
void Renderer::computeScreenViewport() {
int32 screenWidth = _system->getWidth();
int32 screenHeight = _system->getHeight();
// Aspect ratio correction
int32 viewportWidth = MIN<int32>(screenWidth, screenHeight * kOriginalWidth / kOriginalHeight);
int32 viewportHeight = MIN<int32>(screenHeight, screenWidth * kOriginalHeight / kOriginalWidth);
_screenViewport = Common::Rect(viewportWidth, viewportHeight);
// Pillarboxing
_screenViewport.translate((screenWidth - viewportWidth) / 2, (screenHeight - viewportHeight) / 2);
}
Math::Matrix4 Renderer::makeProjectionMatrix(float fov, float nearClip, float farClip) const {
float aspectRatio = kOriginalWidth / (float) kOriginalHeight;
float xmaxValue = nearClip * tanf(fov * M_PI / 360.0f);
float ymaxValue = xmaxValue / aspectRatio;
return Math::makeFrustumMatrix(-xmaxValue, xmaxValue, -ymaxValue, ymaxValue, nearClip, farClip);
}
void Renderer::setupCameraPerspective(float pitch, float heading, float fov) {
_projectionMatrix = makeProjectionMatrix(fov, 1.0f, 10000.0f);
_modelViewMatrix = Math::Matrix4(180.0f - heading, pitch, 0.0f, Math::EO_XYZ);
Math::Matrix4 proj = _projectionMatrix;
Math::Matrix4 model = _modelViewMatrix;
proj.transpose();
model.transpose();
_mvpMatrix = proj * model;
_mvpMatrix.transpose();
}
Renderer *createRenderer(OSystem *system) {
Common::String rendererConfig = ConfMan.get("renderer");
Graphics::RendererType desiredRendererType = Graphics::Renderer::parseTypeCode(rendererConfig);
Graphics::RendererType matchingRendererType = Graphics::Renderer::getBestMatchingAvailableType(desiredRendererType,
#if defined(USE_OPENGL_GAME)
Graphics::kRendererTypeOpenGL |
#endif
#if defined(USE_OPENGL_SHADERS)
Graphics::kRendererTypeOpenGLShaders |
#endif
#if defined(USE_TINYGL)
Graphics::kRendererTypeTinyGL |
#endif
0);
bool isAccelerated = matchingRendererType != Graphics::kRendererTypeTinyGL;
uint width = Renderer::kOriginalWidth;
uint height = Renderer::kOriginalHeight;
if (isAccelerated) {
initGraphics3d(width, height);
} else {
initGraphics(width, height, nullptr);
}
#if defined(USE_OPENGL_SHADERS)
if (matchingRendererType == Graphics::kRendererTypeOpenGLShaders) {
return CreateGfxOpenGLShader(system);
}
#endif
#if defined(USE_OPENGL_GAME)
if (matchingRendererType == Graphics::kRendererTypeOpenGL) {
return CreateGfxOpenGL(system);
}
#endif
#if defined(USE_TINYGL)
if (matchingRendererType == Graphics::kRendererTypeTinyGL) {
return CreateGfxTinyGL(system);
}
#endif
/* We should never end up here, getBestMatchingRendererType would have failed before */
error("Unable to create a renderer");
}
} // End of namespace Playground3d
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