diff options
Diffstat (limited to 'backends/graphics/opengl/pipelines')
| -rw-r--r-- | backends/graphics/opengl/pipelines/clut8.cpp | 46 | ||||
| -rw-r--r-- | backends/graphics/opengl/pipelines/clut8.h | 46 | ||||
| -rw-r--r-- | backends/graphics/opengl/pipelines/fixed.cpp | 70 | ||||
| -rw-r--r-- | backends/graphics/opengl/pipelines/fixed.h | 46 | ||||
| -rw-r--r-- | backends/graphics/opengl/pipelines/pipeline.cpp | 66 | ||||
| -rw-r--r-- | backends/graphics/opengl/pipelines/pipeline.h | 126 | ||||
| -rw-r--r-- | backends/graphics/opengl/pipelines/shader.cpp | 94 | ||||
| -rw-r--r-- | backends/graphics/opengl/pipelines/shader.h | 59 |
8 files changed, 553 insertions, 0 deletions
diff --git a/backends/graphics/opengl/pipelines/clut8.cpp b/backends/graphics/opengl/pipelines/clut8.cpp new file mode 100644 index 0000000000..fca40074f0 --- /dev/null +++ b/backends/graphics/opengl/pipelines/clut8.cpp @@ -0,0 +1,46 @@ +/* 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 2 + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "backends/graphics/opengl/pipelines/clut8.h" +#include "backends/graphics/opengl/shader.h" +#include "backends/graphics/opengl/framebuffer.h" + +namespace OpenGL { + +#if !USE_FORCED_GLES +CLUT8LookUpPipeline::CLUT8LookUpPipeline() + : ShaderPipeline(ShaderMan.query(ShaderManager::kCLUT8LookUp)), _paletteTexture(nullptr) { +} + +void CLUT8LookUpPipeline::drawTexture(const GLTexture &texture, const GLfloat *coordinates) { + // Set the palette texture. + GL_CALL(glActiveTexture(GL_TEXTURE1)); + if (_paletteTexture) { + _paletteTexture->bind(); + } + + GL_CALL(glActiveTexture(GL_TEXTURE0)); + ShaderPipeline::drawTexture(texture, coordinates); +} +#endif // !USE_FORCED_GLES + +} // End of namespace OpenGL diff --git a/backends/graphics/opengl/pipelines/clut8.h b/backends/graphics/opengl/pipelines/clut8.h new file mode 100644 index 0000000000..16724e4652 --- /dev/null +++ b/backends/graphics/opengl/pipelines/clut8.h @@ -0,0 +1,46 @@ +/* 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 2 + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifndef BACKENDS_GRAPHICS_OPENGL_PIPELINES_CLUT8_H +#define BACKENDS_GRAPHICS_OPENGL_PIPELINES_CLUT8_H + +#include "backends/graphics/opengl/pipelines/shader.h" + +namespace OpenGL { + +#if !USE_FORCED_GLES +class CLUT8LookUpPipeline : public ShaderPipeline { +public: + CLUT8LookUpPipeline(); + + void setPaletteTexture(const GLTexture *paletteTexture) { _paletteTexture = paletteTexture; } + + virtual void drawTexture(const GLTexture &texture, const GLfloat *coordinates); + +private: + const GLTexture *_paletteTexture; +}; +#endif // !USE_FORCED_GLES + +} // End of namespace OpenGL + +#endif diff --git a/backends/graphics/opengl/pipelines/fixed.cpp b/backends/graphics/opengl/pipelines/fixed.cpp new file mode 100644 index 0000000000..8e3bd7eaee --- /dev/null +++ b/backends/graphics/opengl/pipelines/fixed.cpp @@ -0,0 +1,70 @@ +/* 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 2 + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "backends/graphics/opengl/pipelines/fixed.h" + +namespace OpenGL { + +#if !USE_FORCED_GLES2 +void FixedPipeline::activateInternal() { + GL_CALL(glDisable(GL_LIGHTING)); + GL_CALL(glDisable(GL_FOG)); + GL_CALL(glShadeModel(GL_FLAT)); + GL_CALL(glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST)); + + GL_CALL(glEnableClientState(GL_VERTEX_ARRAY)); + GL_CALL(glEnableClientState(GL_TEXTURE_COORD_ARRAY)); + +#if !USE_FORCED_GLES + if (g_context.multitextureSupported) { + GL_CALL(glActiveTexture(GL_TEXTURE0)); + } +#endif + GL_CALL(glEnable(GL_TEXTURE_2D)); +} + +void FixedPipeline::setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a) { + GL_CALL(glColor4f(r, g, b, a)); +} + +void FixedPipeline::drawTexture(const GLTexture &texture, const GLfloat *coordinates) { + texture.bind(); + + GL_CALL(glTexCoordPointer(2, GL_FLOAT, 0, texture.getTexCoords())); + GL_CALL(glVertexPointer(2, GL_FLOAT, 0, coordinates)); + GL_CALL(glDrawArrays(GL_TRIANGLE_STRIP, 0, 4)); +} + +void FixedPipeline::setProjectionMatrix(const GLfloat *projectionMatrix) { + if (!isActive()) { + return; + } + + GL_CALL(glMatrixMode(GL_PROJECTION)); + GL_CALL(glLoadMatrixf(projectionMatrix)); + + GL_CALL(glMatrixMode(GL_MODELVIEW)); + GL_CALL(glLoadIdentity()); +} +#endif // !USE_FORCED_GLES2 + +} // End of namespace OpenGL diff --git a/backends/graphics/opengl/pipelines/fixed.h b/backends/graphics/opengl/pipelines/fixed.h new file mode 100644 index 0000000000..6bfe140c19 --- /dev/null +++ b/backends/graphics/opengl/pipelines/fixed.h @@ -0,0 +1,46 @@ +/* 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 2 + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifndef BACKENDS_GRAPHICS_OPENGL_PIPELINES_FIXED_H +#define BACKENDS_GRAPHICS_OPENGL_PIPELINES_FIXED_H + +#include "backends/graphics/opengl/pipelines/pipeline.h" + +namespace OpenGL { + +#if !USE_FORCED_GLES2 +class FixedPipeline : public Pipeline { +public: + virtual void setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a); + + virtual void drawTexture(const GLTexture &texture, const GLfloat *coordinates); + + virtual void setProjectionMatrix(const GLfloat *projectionMatrix); + +protected: + virtual void activateInternal(); +}; +#endif // !USE_FORCED_GLES2 + +} // End of namespace OpenGL + +#endif diff --git a/backends/graphics/opengl/pipelines/pipeline.cpp b/backends/graphics/opengl/pipelines/pipeline.cpp new file mode 100644 index 0000000000..6a59cd28e7 --- /dev/null +++ b/backends/graphics/opengl/pipelines/pipeline.cpp @@ -0,0 +1,66 @@ +/* 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 2 + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "backends/graphics/opengl/pipelines/pipeline.h" +#include "backends/graphics/opengl/framebuffer.h" + +namespace OpenGL { + +Pipeline::Pipeline() + : _activeFramebuffer(nullptr), _isActive(false) { +} + +void Pipeline::activate() { + _isActive = true; + + if (_activeFramebuffer) { + _activeFramebuffer->activate(); + } + + activateInternal(); +} + +void Pipeline::deactivate() { + deactivateInternal(); + + if (_activeFramebuffer) { + _activeFramebuffer->deactivate(); + } + + _isActive = false; +} + +Framebuffer *Pipeline::setFramebuffer(Framebuffer *framebuffer) { + Framebuffer *oldFramebuffer = _activeFramebuffer; + if (_isActive && oldFramebuffer) { + oldFramebuffer->deactivate(); + } + + _activeFramebuffer = framebuffer; + if (_isActive && _activeFramebuffer) { + _activeFramebuffer->activate(); + } + + return oldFramebuffer; +} + +} // End of namespace OpenGL diff --git a/backends/graphics/opengl/pipelines/pipeline.h b/backends/graphics/opengl/pipelines/pipeline.h new file mode 100644 index 0000000000..9f32d33b95 --- /dev/null +++ b/backends/graphics/opengl/pipelines/pipeline.h @@ -0,0 +1,126 @@ +/* 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 2 + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifndef BACKENDS_GRAPHICS_OPENGL_PIPELINES_PIPELINE_H +#define BACKENDS_GRAPHICS_OPENGL_PIPELINES_PIPELINE_H + +#include "backends/graphics/opengl/opengl-sys.h" +#include "backends/graphics/opengl/texture.h" + +namespace OpenGL { + +class Framebuffer; + +/** + * Interface for OpenGL pipeline functionality. + * + * This encapsulates differences in various rendering pipelines used for + * OpenGL, OpenGL ES 1, and OpenGL ES 2. + */ +class Pipeline { +public: + Pipeline(); + virtual ~Pipeline() {} + + /** + * Activate the pipeline. + * + * This sets the OpenGL state to make use of drawing with the given + * OpenGL pipeline. + */ + void activate(); + + /** + * Deactivate the pipeline. + */ + void deactivate(); + + /** + * Set framebuffer to render to. + * + * Client is responsible for any memory management related to framebuffer. + * + * @param framebuffer Framebuffer to activate. + * @return Formerly active framebuffer. + */ + Framebuffer *setFramebuffer(Framebuffer *framebuffer); + + /** + * Set modulation color. + * + * @param r Red component in [0,1]. + * @param g Green component in [0,1]. + * @param b Blue component in [0,1]. + * @param a Alpha component in [0,1]. + */ + virtual void setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a) = 0; + + /** + * Draw a texture rectangle to the currently active framebuffer. + * + * @param texture Texture to use for drawing. + * @param coordinates x1, y1, x2, y2 coordinates where to draw the texture. + */ + virtual void drawTexture(const GLTexture &texture, const GLfloat *coordinates) = 0; + + void drawTexture(const GLTexture &texture, GLfloat x, GLfloat y, GLfloat w, GLfloat h) { + const GLfloat coordinates[4*2] = { + x, y, + x + w, y, + x, y + h, + x + w, y + h + }; + drawTexture(texture, coordinates); + } + + /** + * Set the projection matrix. + * + * This is intended to be only ever be used by Framebuffer subclasses. + */ + virtual void setProjectionMatrix(const GLfloat *projectionMatrix) = 0; + +protected: + /** + * Activate the pipeline. + * + * This sets the OpenGL state to make use of drawing with the given + * OpenGL pipeline. + */ + virtual void activateInternal() = 0; + + /** + * Deactivate the pipeline. + */ + virtual void deactivateInternal() {} + + bool isActive() const { return _isActive; } + + Framebuffer *_activeFramebuffer; + +private: + bool _isActive; +}; + +} // End of namespace OpenGL + +#endif diff --git a/backends/graphics/opengl/pipelines/shader.cpp b/backends/graphics/opengl/pipelines/shader.cpp new file mode 100644 index 0000000000..a2dabb7c22 --- /dev/null +++ b/backends/graphics/opengl/pipelines/shader.cpp @@ -0,0 +1,94 @@ +/* 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 2 + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "backends/graphics/opengl/pipelines/shader.h" +#include "backends/graphics/opengl/shader.h" +#include "backends/graphics/opengl/framebuffer.h" + +namespace OpenGL { + +#if !USE_FORCED_GLES +ShaderPipeline::ShaderPipeline(Shader *shader) + : _activeShader(shader), _colorAttributes() { + _vertexAttribLocation = shader->getAttributeLocation("position"); + _texCoordAttribLocation = shader->getAttributeLocation("texCoordIn"); + _colorAttribLocation = shader->getAttributeLocation("blendColorIn"); + + assert(_vertexAttribLocation != -1); + assert(_texCoordAttribLocation != -1); + assert(_colorAttribLocation != -1); + + // One of the attributes needs to be passed through location 0, otherwise + // we get no output for GL contexts due to GL compatibility reasons. Let's + // check whether this ever happens. If this ever gets hit, we need to + // enable location 0 and pass some dummy values through it to fix output. + assert( _vertexAttribLocation == 0 + || _texCoordAttribLocation == 0 + || _colorAttribLocation == 0); +} + +void ShaderPipeline::activateInternal() { + GL_CALL(glEnableVertexAttribArray(_vertexAttribLocation)); + GL_CALL(glEnableVertexAttribArray(_texCoordAttribLocation)); + GL_CALL(glEnableVertexAttribArray(_colorAttribLocation)); + + if (g_context.multitextureSupported) { + GL_CALL(glActiveTexture(GL_TEXTURE0)); + } + + _activeShader->activate(); + + GL_CALL(glVertexAttribPointer(_colorAttribLocation, 4, GL_FLOAT, GL_FALSE, 0, _colorAttributes)); +} + +void ShaderPipeline::deactivateInternal() { + GL_CALL(glDisableVertexAttribArray(_vertexAttribLocation)); + GL_CALL(glDisableVertexAttribArray(_texCoordAttribLocation)); + GL_CALL(glDisableVertexAttribArray(_colorAttribLocation)); + + _activeShader->deactivate(); +} + +void ShaderPipeline::setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a) { + GLfloat *dst = _colorAttributes; + for (uint i = 0; i < 4; ++i) { + *dst++ = r; + *dst++ = g; + *dst++ = b; + *dst++ = a; + } +} + +void ShaderPipeline::drawTexture(const GLTexture &texture, const GLfloat *coordinates) { + texture.bind(); + + GL_CALL(glVertexAttribPointer(_texCoordAttribLocation, 2, GL_FLOAT, GL_FALSE, 0, texture.getTexCoords())); + GL_CALL(glVertexAttribPointer(_vertexAttribLocation, 2, GL_FLOAT, GL_FALSE, 0, coordinates)); + GL_CALL(glDrawArrays(GL_TRIANGLE_STRIP, 0, 4)); +} + +void ShaderPipeline::setProjectionMatrix(const GLfloat *projectionMatrix) { + _activeShader->setUniform("projection", new ShaderUniformMatrix44(projectionMatrix)); +} +#endif // !USE_FORCED_GLES + +} // End of namespace OpenGL diff --git a/backends/graphics/opengl/pipelines/shader.h b/backends/graphics/opengl/pipelines/shader.h new file mode 100644 index 0000000000..6159607099 --- /dev/null +++ b/backends/graphics/opengl/pipelines/shader.h @@ -0,0 +1,59 @@ +/* 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 2 + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifndef BACKENDS_GRAPHICS_OPENGL_PIPELINES_SHADER_H +#define BACKENDS_GRAPHICS_OPENGL_PIPELINES_SHADER_H + +#include "backends/graphics/opengl/pipelines/pipeline.h" + +namespace OpenGL { + +#if !USE_FORCED_GLES +class Shader; + +class ShaderPipeline : public Pipeline { +public: + ShaderPipeline(Shader *shader); + + virtual void setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a); + + virtual void drawTexture(const GLTexture &texture, const GLfloat *coordinates); + + virtual void setProjectionMatrix(const GLfloat *projectionMatrix); + +protected: + virtual void activateInternal(); + virtual void deactivateInternal(); + + GLint _vertexAttribLocation; + GLint _texCoordAttribLocation; + GLint _colorAttribLocation; + + GLfloat _colorAttributes[4*4]; + + Shader *const _activeShader; +}; +#endif // !USE_FORCED_GLES + +} // End of namespace OpenGL + +#endif |