2ebffd2da5
For compatibility location 0 is used to decide whether fixed function style vertex information is used in old GL contexts. In some cases drivers might assign the color information to be passed through attribute 0. This caused the array attribute status for location 0 to be disabled and resulted in wrong vertex data to be used.
59 lines
1.7 KiB
C++
59 lines
1.7 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
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef BACKENDS_GRAPHICS_OPENGL_PIPELINES_SHADER_H
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#define BACKENDS_GRAPHICS_OPENGL_PIPELINES_SHADER_H
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#include "backends/graphics/opengl/pipelines/pipeline.h"
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namespace OpenGL {
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#if !USE_FORCED_GLES
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class Shader;
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class ShaderPipeline : public Pipeline {
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public:
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ShaderPipeline(Shader *shader);
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virtual void setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
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virtual void drawTexture(const GLTexture &texture, const GLfloat *coordinates);
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virtual void setProjectionMatrix(const GLfloat *projectionMatrix);
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protected:
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virtual void activateInternal();
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virtual void deactivateInternal();
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GLint _vertexAttribLocation;
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GLint _texCoordAttribLocation;
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GLint _colorAttribLocation;
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GLfloat _colorAttributes[4*4];
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Shader *const _activeShader;
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};
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#endif // !USE_FORCED_GLES
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} // End of namespace OpenGL
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#endif
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