1 /*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17
18 #include "rsdFrameBufferObj.h"
19 #include "rsdAllocation.h"
20 #include "rsdGL.h"
21 #include "rsdCore.h"
22
23 #include <GLES2/gl2.h>
24 #include <GLES2/gl2ext.h>
25
26 using namespace android;
27 using namespace android::renderscript;
28
RsdFrameBufferObj()29 RsdFrameBufferObj::RsdFrameBufferObj() {
30 mFBOId = 0;
31 mWidth = 0;
32 mHeight = 0;
33 mColorTargetsCount = 1;
34 mColorTargets = new DrvAllocation*[mColorTargetsCount];
35 for (uint32_t i = 0; i < mColorTargetsCount; i ++) {
36 mColorTargets[i] = 0;
37 }
38 mDepthTarget = nullptr;
39 mDirty = true;
40 }
41
~RsdFrameBufferObj()42 RsdFrameBufferObj::~RsdFrameBufferObj() {
43 if(mFBOId != 0) {
44 glDeleteFramebuffers(1, &mFBOId);
45 }
46 delete [] mColorTargets;
47 }
48
checkError(const Context * rsc)49 void RsdFrameBufferObj::checkError(const Context *rsc) {
50 GLenum status;
51 status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
52 switch (status) {
53 case GL_FRAMEBUFFER_COMPLETE:
54 break;
55 case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
56 rsc->setError(RS_ERROR_BAD_VALUE,
57 "Unable to set up render Target: RFRAMEBUFFER_INCOMPLETE_ATTACHMENT");
58 break;
59 case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
60 rsc->setError(RS_ERROR_BAD_VALUE,
61 "Unable to set up render Target: GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT");
62 break;
63 case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
64 rsc->setError(RS_ERROR_BAD_VALUE,
65 "Unable to set up render Target: GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS");
66 break;
67 case GL_FRAMEBUFFER_UNSUPPORTED:
68 rsc->setError(RS_ERROR_BAD_VALUE,
69 "Unable to set up render Target: GL_FRAMEBUFFER_UNSUPPORTED");
70 break;
71 }
72 }
73
74
setDepthAttachment()75 void RsdFrameBufferObj::setDepthAttachment() {
76 if (mDepthTarget != nullptr) {
77 if (mDepthTarget->textureID) {
78 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
79 GL_TEXTURE_2D, mDepthTarget->textureID, 0);
80 } else {
81 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
82 GL_RENDERBUFFER, mDepthTarget->renderTargetID);
83 }
84 } else {
85 // Reset last attachment
86 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, 0);
87 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
88 }
89 }
90
setColorAttachment()91 void RsdFrameBufferObj::setColorAttachment() {
92 // Now attach color targets
93 for (uint32_t i = 0; i < mColorTargetsCount; i ++) {
94 if (mColorTargets[i] != nullptr) {
95 if (mColorTargets[i]->textureID) {
96 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + i,
97 GL_TEXTURE_2D, mColorTargets[i]->textureID, 0);
98 } else {
99 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + i,
100 GL_RENDERBUFFER, mColorTargets[i]->renderTargetID);
101 }
102 } else {
103 // Reset last attachment
104 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + i,
105 GL_RENDERBUFFER, 0);
106 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + i,
107 GL_TEXTURE_2D, 0, 0);
108 }
109 }
110 }
111
renderToFramebuffer()112 bool RsdFrameBufferObj::renderToFramebuffer() {
113 if (mDepthTarget != nullptr) {
114 return false;
115 }
116
117 for (uint32_t i = 0; i < mColorTargetsCount; i ++) {
118 if (mColorTargets[i] != nullptr) {
119 return false;
120 }
121 }
122 return true;
123 }
124
setActive(const Context * rsc)125 void RsdFrameBufferObj::setActive(const Context *rsc) {
126 RsdHal *dc = (RsdHal *)rsc->mHal.drv;
127 bool framebuffer = renderToFramebuffer();
128
129 if(mColorTargets[0] && mColorTargets[0]->wnd) {
130 rsdGLSetInternalSurface(rsc, mColorTargets[0]->wnd);
131 EGLint width, height;
132 eglQuerySurface(dc->gl.egl.display, dc->gl.egl.surface, EGL_WIDTH, &width);
133 eglQuerySurface(dc->gl.egl.display, dc->gl.egl.surface, EGL_HEIGHT, &height);
134 RSD_CALL_GL(glViewport, 0, 0, width, height);
135 } else {
136 if (!framebuffer) {
137 if(mFBOId == 0) {
138 RSD_CALL_GL(glGenFramebuffers, 1, &mFBOId);
139 }
140 RSD_CALL_GL(glBindFramebuffer, GL_FRAMEBUFFER, mFBOId);
141
142 if (mDirty) {
143 setDepthAttachment();
144 setColorAttachment();
145 mDirty = false;
146 }
147
148 RSD_CALL_GL(glViewport, 0, 0, mWidth, mHeight);
149 checkError(rsc);
150 } else {
151 if(dc->gl.wndSurface != dc->gl.currentWndSurface) {
152 rsdGLSetInternalSurface(rsc, dc->gl.wndSurface);
153 } else {
154 RSD_CALL_GL(glBindFramebuffer, GL_FRAMEBUFFER, 0);
155 }
156 RSD_CALL_GL(glViewport, 0, 0, rsc->getWidth(), rsc->getHeight());
157 }
158 }
159 }
160