114 lines
3.9 KiB
C++
114 lines
3.9 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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#include "engines/stark/gfx/openglssurface.h"
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#include "engines/stark/gfx/opengls.h"
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#include "engines/stark/gfx/bitmap.h"
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#include "engines/stark/gfx/color.h"
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#if defined(USE_OPENGL_SHADERS)
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#include "graphics/opengl/shader.h"
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namespace Stark {
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namespace Gfx {
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OpenGLSSurfaceRenderer::OpenGLSSurfaceRenderer(OpenGLSDriver *gfx) :
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SurfaceRenderer(),
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_gfx(gfx) {
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_shader = _gfx->createSurfaceShaderInstance();
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_shaderFill = _gfx->createSurfaceFillShaderInstance();
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}
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OpenGLSSurfaceRenderer::~OpenGLSSurfaceRenderer() {
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delete _shaderFill;
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delete _shader;
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}
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void OpenGLSSurfaceRenderer::render(const Bitmap *bitmap, const Common::Point &dest) {
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render(bitmap, dest, bitmap->width(), bitmap->height());
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}
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void OpenGLSSurfaceRenderer::render(const Bitmap *bitmap, const Common::Point &dest, uint width, uint height) {
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// Destination rectangle with given width and height
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_gfx->start2DMode();
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_shader->use();
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_shader->setUniform1f("fadeLevel", _fadeLevel);
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_shader->setUniform("snapToGrid", _snapToGrid ? 1 : 0);
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_shader->setUniform("verOffsetXY", normalizeOriginalCoordinates(dest.x, dest.y));
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if (_noScalingOverride) {
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_shader->setUniform("verSizeWH", normalizeCurrentCoordinates(width, height));
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} else {
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_shader->setUniform("verSizeWH", normalizeOriginalCoordinates(width, height));
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}
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Common::Rect nativeViewport = _gfx->getViewport();
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_shader->setUniform("viewport", Math::Vector2d(nativeViewport.width(), nativeViewport.height()));
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bitmap->bind();
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glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
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_shader->unbind();
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_gfx->end2DMode();
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}
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void OpenGLSSurfaceRenderer::fill(const Color &color, const Common::Point &dest, uint width, uint height) {
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// Destination rectangle with given width and height
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_gfx->start2DMode();
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_shaderFill->use();
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_shaderFill->setUniform1f("fadeLevel", _fadeLevel);
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_shaderFill->setUniform("snapToGrid", _snapToGrid ? 1 : 0);
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_shaderFill->setUniform("verOffsetXY", normalizeOriginalCoordinates(dest.x, dest.y));
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if (_noScalingOverride) {
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_shaderFill->setUniform("verSizeWH", normalizeCurrentCoordinates(width, height));
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} else {
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_shaderFill->setUniform("verSizeWH", normalizeOriginalCoordinates(width, height));
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}
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Common::Rect nativeViewport = _gfx->getViewport();
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_shaderFill->setUniform("viewport", Math::Vector2d(nativeViewport.width(), nativeViewport.height()));
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_shaderFill->setUniform("color", Math::Vector4d(color.r / 255.0f, color.g / 255.0f, color.b / 255.0f, color.a / 255.0f));
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glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
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_shaderFill->unbind();
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_gfx->end2DMode();
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}
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Math::Vector2d OpenGLSSurfaceRenderer::normalizeOriginalCoordinates(int x, int y) const {
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Common::Rect viewport = _gfx->getUnscaledViewport();
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return Math::Vector2d(x / (float)viewport.width(), y / (float)viewport.height());
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}
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Math::Vector2d OpenGLSSurfaceRenderer::normalizeCurrentCoordinates(int x, int y) const {
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Common::Rect viewport = _gfx->getViewport();
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return Math::Vector2d(x / (float)viewport.width(), y / (float)viewport.height());
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}
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} // End of namespace Gfx
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} // End of namespace Stark
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#endif // if defined(USE_OPENGL_SHADERS)
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