diff options
Diffstat (limited to 'source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.cpp')
| -rw-r--r-- | source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.cpp | 347 |
1 files changed, 0 insertions, 347 deletions
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.cpp b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.cpp deleted file mode 100644 index 58b3c61bd05..00000000000 --- a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.cpp +++ /dev/null @@ -1,347 +0,0 @@ -/* - * ***** BEGIN GPL LICENSE BLOCK ***** - * - * 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. - * - * The Original Code is Copyright (C) 2015, Blender Foundation - * All rights reserved. - * - * The Original Code is: all of this file. - * - * Contributor(s): Blender Foundation. - * - * ***** END GPL LICENSE BLOCK ***** - */ - -#include "GPU_glew.h" - -#include <stdio.h> - -#include "RAS_OpenGLOffScreen.h" -#include "RAS_ICanvas.h" - -RAS_OpenGLOffScreen::RAS_OpenGLOffScreen(RAS_ICanvas *canvas) - :m_canvas(canvas), m_depthrb(0), m_colorrb(0), m_depthtx(0), m_colortx(0), - m_fbo(0), m_blitfbo(0), m_blitrbo(0), m_blittex(0), m_target(RAS_OFS_RENDER_BUFFER), m_bound(false) -{ - m_width = 0; - m_height = 0; - m_samples = 0; - m_color = 0; -} - -RAS_OpenGLOffScreen::~RAS_OpenGLOffScreen() -{ - Destroy(); -} - -bool RAS_OpenGLOffScreen::Create(int width, int height, int samples, RAS_OFS_RENDER_TARGET target) -{ - GLenum status; - GLuint glo[2], fbo; - GLint max_samples; - GLenum textarget; - - if (m_fbo) { - printf("RAS_OpenGLOffScreen::Create(): buffer exists already, destroy first\n"); - return false; - } - if (target != RAS_IOffScreen::RAS_OFS_RENDER_BUFFER && - target != RAS_IOffScreen::RAS_OFS_RENDER_TEXTURE) - { - printf("RAS_OpenGLOffScreen::Create(): invalid offscren target\n"); - return false; - } - if (!GLEW_EXT_framebuffer_object) { - printf("RAS_OpenGLOffScreen::Create(): frame buffer not supported\n"); - return false; - } - if (samples) { - if (!GLEW_EXT_framebuffer_multisample || - !GLEW_EXT_framebuffer_blit) - { - samples = 0; - } - } - if (samples && target == RAS_OFS_RENDER_TEXTURE) { - // we need this in addition if we use multisample textures - if (!GLEW_ARB_texture_multisample || - !GLEW_EXT_framebuffer_multisample_blit_scaled) - { - samples = 0; - } - } - if (samples) { - max_samples = 0; - glGetIntegerv(GL_MAX_SAMPLES_EXT , &max_samples); - if (samples > max_samples) - samples = max_samples; - } - m_target = target; - fbo = 0; - glGenFramebuffersEXT(1, &fbo); - if (fbo == 0) { - printf("RAS_OpenGLOffScreen::Create(): frame buffer creation failed: %d\n", (int)glGetError()); - return false; - } - m_fbo = fbo; - glo[0] = glo[1] = 0; - if (target == RAS_OFS_RENDER_TEXTURE) { - glGenTextures(2, glo); - if (glo[0] == 0 || glo[1] == 0) { - printf("RAS_OpenGLOffScreen::Create(): texture creation failed: %d\n", (int)glGetError()); - goto L_ERROR; - } - m_depthtx = glo[0]; - m_color = m_colortx = glo[1]; - if (samples) { - textarget = GL_TEXTURE_2D_MULTISAMPLE; - glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, m_depthtx); - glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, samples, GL_DEPTH_COMPONENT, width, height, true); - glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, m_colortx); - glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, samples, GL_RGBA8, width, height, true); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, 0); - } - else { - textarget = GL_TEXTURE_2D; - glBindTexture(GL_TEXTURE_2D, m_depthtx); - glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, width, height, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL); - glBindTexture(GL_TEXTURE_2D, m_colortx); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); - glBindTexture(GL_TEXTURE_2D, 0); - } - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo); - glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, textarget, m_depthtx, 0); - glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, textarget, m_colortx, 0); - } - else { - glGenRenderbuffersEXT(2, glo); - if (glo[0] == 0 || glo[1] == 0) { - printf("RAS_OpenGLOffScreen::Create(): render buffer creation failed: %d\n", (int)glGetError()); - goto L_ERROR; - } - m_depthrb = glo[0]; - m_colorrb = glo[1]; - glBindRenderbufferEXT(GL_RENDERBUFFER, m_depthrb); - glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER, samples, GL_DEPTH_COMPONENT, width, height); - glBindRenderbufferEXT(GL_RENDERBUFFER, m_colorrb); - glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER, samples, GL_RGBA8, width, height); - glBindRenderbufferEXT(GL_RENDERBUFFER, 0); - - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo); - glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER, m_depthrb); - glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER, m_colorrb); - } - status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - - if (status != GL_FRAMEBUFFER_COMPLETE_EXT) { - printf("RAS_OpenGLOffScreen::Create(): frame buffer incomplete: %d\n", (int)status); - goto L_ERROR; - } - m_width = width; - m_height = height; - - if (samples > 0) { - GLuint blit_tex; - GLuint blit_fbo; - // create a secondary FBO to blit to before the pixel can be read - - /* write into new single-sample buffer */ - glGenFramebuffersEXT(1, &blit_fbo); - if (!blit_fbo) { - printf("RAS_OpenGLOffScreen::Create(): failed creating a FBO for multi-sample offscreen buffer\n"); - goto L_ERROR; - } - m_blitfbo = blit_fbo; - blit_tex = 0; - if (target == RAS_OFS_RENDER_TEXTURE) { - glGenTextures(1, &blit_tex); - if (!blit_tex) { - printf("RAS_OpenGLOffScreen::Create(): failed creating a texture for multi-sample offscreen buffer\n"); - goto L_ERROR; - } - // m_color is the texture where the final render goes, the blit texture in this case - m_color = m_blittex = blit_tex; - glBindTexture(GL_TEXTURE_2D, m_blittex); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - glBindTexture(GL_TEXTURE_2D, 0); - glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, m_blitfbo); - glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, m_blittex, 0); - } - else { - /* create render buffer for new 'fbo_blit' */ - glGenRenderbuffersEXT(1, &blit_tex); - if (!blit_tex) { - printf("RAS_OpenGLOffScreen::Create(): failed creating a render buffer for multi-sample offscreen buffer\n"); - goto L_ERROR; - } - m_blitrbo = blit_tex; - glBindRenderbufferEXT(GL_RENDERBUFFER, m_blitrbo); - glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER, 0, GL_RGBA8, width, height); - glBindRenderbufferEXT(GL_RENDERBUFFER, 0); - glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, m_blitfbo); - glFramebufferRenderbufferEXT(GL_DRAW_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER, m_blitrbo); - } - status = glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER_EXT); - glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, 0); - if (status != GL_FRAMEBUFFER_COMPLETE) { - printf("RAS_OpenGLOffScreen::Create(): frame buffer for multi-sample offscreen buffer incomplete: %d\n", (int)status); - goto L_ERROR; - } - // remember that multisample is enabled - m_samples = 1; - } - return true; - -L_ERROR: - Destroy(); - return false; -} - -void RAS_OpenGLOffScreen::Destroy() -{ - GLuint globj; - Unbind(); - if (m_fbo) { - globj = m_fbo; - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo); - if (m_target == RAS_OFS_RENDER_TEXTURE) { - GLenum textarget = (m_samples) ? GL_TEXTURE_2D_MULTISAMPLE : GL_TEXTURE_2D; - glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, textarget, 0, 0); - glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, textarget, 0, 0); - } - else { - glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, 0); - glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER_EXT, 0); - } - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - glDeleteFramebuffersEXT(1, &globj); - m_fbo = 0; - } - if (m_depthrb) { - globj = m_depthrb; - glDeleteRenderbuffers(1, &globj); - m_depthrb = 0; - } - if (m_colorrb) { - globj = m_colorrb; - glDeleteRenderbuffers(1, &globj); - m_colorrb = 0; - } - if (m_depthtx) { - globj = m_depthtx; - glDeleteTextures(1, &globj); - m_depthtx = 0; - } - if (m_colortx) { - globj = m_colortx; - glDeleteTextures(1, &globj); - m_colortx = 0; - } - if (m_blitfbo) { - globj = m_blitfbo; - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_blitfbo); - if (m_target == RAS_OFS_RENDER_TEXTURE) { - glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, 0, 0); - } - else { - glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER_EXT, 0); - } - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - glDeleteFramebuffersEXT(1, &globj); - m_blitfbo = 0; - } - if (m_blitrbo) { - globj = m_blitrbo; - glDeleteRenderbuffers(1, &globj); - m_blitrbo = 0; - } - if (m_blittex) { - globj = m_blittex; - glDeleteTextures(1, &globj); - m_blittex = 0; - } - m_width = 0; - m_height = 0; - m_samples = 0; - m_color = 0; - m_target = RAS_OFS_RENDER_BUFFER; -} - -void RAS_OpenGLOffScreen::Bind(RAS_OFS_BIND_MODE mode) -{ - if (m_fbo) { - if (mode == RAS_OFS_BIND_RENDER) { - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo); - glReadBuffer(GL_COLOR_ATTACHMENT0_EXT); - glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT); - glViewport(0, 0, m_width, m_height); - glDisable(GL_SCISSOR_TEST); - } - else if (!m_blitfbo) { - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo); - glReadBuffer(GL_COLOR_ATTACHMENT0_EXT); - } - else { - glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, m_blitfbo); - glReadBuffer(GL_COLOR_ATTACHMENT0_EXT); - } - m_bound = true; - } -} - -void RAS_OpenGLOffScreen::Unbind() -{ - if (!m_bound) - return; - - glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - glEnable(GL_SCISSOR_TEST); - glReadBuffer(GL_BACK); - glDrawBuffer(GL_BACK); - m_bound = false; -} - -void RAS_OpenGLOffScreen::MipMap() -{ - if (m_color) { - glBindTexture(GL_TEXTURE_2D, m_color); - glGenerateMipmap(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, 0); - } -} - -void RAS_OpenGLOffScreen::Blit() -{ - if (m_bound && m_blitfbo) { - // set the draw target to the secondary FBO, the read target is still the multisample FBO - glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER, m_blitfbo); - - // sample the primary - glBlitFramebufferEXT(0, 0, m_width, m_height, 0, 0, m_width, m_height, GL_COLOR_BUFFER_BIT, GL_NEAREST); - - // make sure the next glReadPixels will read from the secondary buffer - glBindFramebufferEXT(GL_READ_FRAMEBUFFER, m_blitfbo); - } -} |