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39 | |
40 | #ifndef QOPENGLFRAMEBUFFEROBJECT_P_H |
41 | #define QOPENGLFRAMEBUFFEROBJECT_P_H |
42 | |
43 | // |
44 | // W A R N I N G |
45 | // ------------- |
46 | // |
47 | // This file is not part of the Qt API. It exists purely as an |
48 | // implementation detail. This header file may change from version to |
49 | // version without notice, or even be removed. |
50 | // |
51 | // We mean it. |
52 | // |
53 | |
54 | #include <QtGui/private/qtguiglobal_p.h> |
55 | #include <qopenglframebufferobject.h> |
56 | #include <private/qopenglcontext_p.h> |
57 | #include <private/qopenglextensions_p.h> |
58 | |
59 | QT_BEGIN_NAMESPACE |
60 | |
61 | class QOpenGLFramebufferObjectFormatPrivate |
62 | { |
63 | public: |
64 | QOpenGLFramebufferObjectFormatPrivate() |
65 | : ref(1), |
66 | samples(0), |
67 | attachment(QOpenGLFramebufferObject::NoAttachment), |
68 | target(GL_TEXTURE_2D), |
69 | mipmap(false) |
70 | { |
71 | #ifndef QT_OPENGL_ES_2 |
72 | // There is nothing that says QOpenGLFramebufferObjectFormat needs a current |
73 | // context, so we need a fallback just to be safe, even though in pratice there |
74 | // will usually be a context current. |
75 | QOpenGLContext *ctx = QOpenGLContext::currentContext(); |
76 | const bool isES = ctx ? ctx->isOpenGLES() : QOpenGLContext::openGLModuleType() != QOpenGLContext::LibGL; |
77 | internal_format = isES ? GL_RGBA : GL_RGBA8; |
78 | #else |
79 | internal_format = GL_RGBA; |
80 | #endif |
81 | } |
82 | QOpenGLFramebufferObjectFormatPrivate |
83 | (const QOpenGLFramebufferObjectFormatPrivate *other) |
84 | : ref(1), |
85 | samples(other->samples), |
86 | attachment(other->attachment), |
87 | target(other->target), |
88 | internal_format(other->internal_format), |
89 | mipmap(other->mipmap) |
90 | { |
91 | } |
92 | bool equals(const QOpenGLFramebufferObjectFormatPrivate *other) |
93 | { |
94 | return samples == other->samples && |
95 | attachment == other->attachment && |
96 | target == other->target && |
97 | internal_format == other->internal_format && |
98 | mipmap == other->mipmap; |
99 | } |
100 | |
101 | QAtomicInt ref; |
102 | int samples; |
103 | QOpenGLFramebufferObject::Attachment attachment; |
104 | GLenum target; |
105 | GLenum internal_format; |
106 | uint mipmap : 1; |
107 | }; |
108 | |
109 | class QOpenGLFramebufferObjectPrivate |
110 | { |
111 | public: |
112 | QOpenGLFramebufferObjectPrivate() : fbo_guard(nullptr), depth_buffer_guard(nullptr) |
113 | , stencil_buffer_guard(nullptr) |
114 | , valid(false) {} |
115 | ~QOpenGLFramebufferObjectPrivate() {} |
116 | |
117 | void init(QOpenGLFramebufferObject *q, const QSize &size, |
118 | QOpenGLFramebufferObject::Attachment attachment, |
119 | GLenum texture_target, GLenum internal_format, |
120 | GLint samples = 0, bool mipmap = false); |
121 | void initTexture(int idx); |
122 | void initColorBuffer(int idx, GLint *samples); |
123 | void initDepthStencilAttachments(QOpenGLContext *ctx, QOpenGLFramebufferObject::Attachment attachment); |
124 | |
125 | bool checkFramebufferStatus(QOpenGLContext *ctx) const; |
126 | QOpenGLSharedResourceGuard *fbo_guard; |
127 | QOpenGLSharedResourceGuard *depth_buffer_guard; |
128 | QOpenGLSharedResourceGuard *stencil_buffer_guard; |
129 | GLenum target; |
130 | QSize dsSize; |
131 | QOpenGLFramebufferObjectFormat format; |
132 | int requestedSamples; |
133 | uint valid : 1; |
134 | QOpenGLFramebufferObject::Attachment fbo_attachment; |
135 | QOpenGLExtensions funcs; |
136 | |
137 | struct ColorAttachment { |
138 | ColorAttachment() : internalFormat(0), guard(nullptr) { } |
139 | ColorAttachment(const QSize &size, GLenum internalFormat) |
140 | : size(size), internalFormat(internalFormat), guard(nullptr) { } |
141 | QSize size; |
142 | GLenum internalFormat; |
143 | QOpenGLSharedResourceGuard *guard; |
144 | }; |
145 | QVector<ColorAttachment> colorAttachments; |
146 | |
147 | inline GLuint fbo() const { return fbo_guard ? fbo_guard->id() : 0; } |
148 | }; |
149 | |
150 | |
151 | QT_END_NAMESPACE |
152 | |
153 | #endif // QOPENGLFRAMEBUFFEROBJECT_P_H |
154 | |