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Linux texture support (flutter#24916)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| // Copyright 2013 The Flutter Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style license that can be | ||
| // found in the LICENSE file. | ||
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| #include "flutter/shell/platform/linux/public/flutter_linux/fl_pixel_buffer_texture.h" | ||
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| #include <epoxy/gl.h> | ||
| #include <gmodule.h> | ||
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| #include "flutter/shell/platform/linux/fl_pixel_buffer_texture_private.h" | ||
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| typedef struct { | ||
| GLuint texture_id; | ||
| } FlPixelBufferTexturePrivate; | ||
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| // Added here to stop the compiler from optimising this function away. | ||
| G_MODULE_EXPORT GType fl_pixel_buffer_texture_get_type(); | ||
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| static void fl_pixel_buffer_texture_iface_init(FlTextureInterface* iface) {} | ||
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| G_DEFINE_TYPE_WITH_CODE( | ||
| FlPixelBufferTexture, | ||
| fl_pixel_buffer_texture, | ||
| G_TYPE_OBJECT, | ||
| G_IMPLEMENT_INTERFACE(fl_texture_get_type(), | ||
| fl_pixel_buffer_texture_iface_init); | ||
| G_ADD_PRIVATE(FlPixelBufferTexture)) | ||
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| static void fl_pixel_buffer_texture_dispose(GObject* object) { | ||
| FlPixelBufferTexture* self = FL_PIXEL_BUFFER_TEXTURE(object); | ||
| FlPixelBufferTexturePrivate* priv = | ||
| reinterpret_cast<FlPixelBufferTexturePrivate*>( | ||
| fl_pixel_buffer_texture_get_instance_private(self)); | ||
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| if (priv->texture_id) { | ||
| glDeleteTextures(1, &priv->texture_id); | ||
| priv->texture_id = 0; | ||
| } | ||
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| G_OBJECT_CLASS(fl_pixel_buffer_texture_parent_class)->dispose(object); | ||
| } | ||
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| static void check_gl_error(int line) { | ||
| GLenum err = glGetError(); | ||
| if (err) { | ||
| g_warning("glGetError %x (%s:%d)\n", err, __FILE__, line); | ||
| } | ||
| } | ||
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| gboolean fl_pixel_buffer_texture_populate(FlPixelBufferTexture* texture, | ||
| uint32_t width, | ||
| uint32_t height, | ||
| FlutterOpenGLTexture* opengl_texture, | ||
| GError** error) { | ||
| FlPixelBufferTexture* self = FL_PIXEL_BUFFER_TEXTURE(texture); | ||
| FlPixelBufferTexturePrivate* priv = | ||
| reinterpret_cast<FlPixelBufferTexturePrivate*>( | ||
| fl_pixel_buffer_texture_get_instance_private(self)); | ||
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| const uint8_t* buffer = nullptr; | ||
| if (!FL_PIXEL_BUFFER_TEXTURE_GET_CLASS(self)->copy_pixels( | ||
| self, &buffer, &width, &height, error)) { | ||
| return FALSE; | ||
| } | ||
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| if (priv->texture_id == 0) { | ||
| glGenTextures(1, &priv->texture_id); | ||
| check_gl_error(__LINE__); | ||
| glBindTexture(GL_TEXTURE_2D, priv->texture_id); | ||
| check_gl_error(__LINE__); | ||
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER); | ||
| check_gl_error(__LINE__); | ||
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER); | ||
| check_gl_error(__LINE__); | ||
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); | ||
| check_gl_error(__LINE__); | ||
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | ||
| check_gl_error(__LINE__); | ||
| } else { | ||
| glBindTexture(GL_TEXTURE_2D, priv->texture_id); | ||
| check_gl_error(__LINE__); | ||
| } | ||
| glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, | ||
| GL_UNSIGNED_BYTE, buffer); | ||
| check_gl_error(__LINE__); | ||
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| opengl_texture->target = GL_TEXTURE_2D; | ||
| opengl_texture->name = priv->texture_id; | ||
| opengl_texture->format = GL_RGBA8; | ||
| opengl_texture->destruction_callback = nullptr; | ||
| opengl_texture->user_data = nullptr; | ||
| opengl_texture->width = width; | ||
| opengl_texture->height = height; | ||
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| return TRUE; | ||
| } | ||
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| static void fl_pixel_buffer_texture_class_init( | ||
| FlPixelBufferTextureClass* klass) { | ||
| G_OBJECT_CLASS(klass)->dispose = fl_pixel_buffer_texture_dispose; | ||
| } | ||
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| static void fl_pixel_buffer_texture_init(FlPixelBufferTexture* self) {} |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| // Copyright 2013 The Flutter Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style license that can be | ||
| // found in the LICENSE file. | ||
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| #ifndef FLUTTER_SHELL_PLATFORM_LINUX_FL_PIXEL_BUFFER_TEXTURE_PRIVATE_H_ | ||
| #define FLUTTER_SHELL_PLATFORM_LINUX_FL_PIXEL_BUFFER_TEXTURE_PRIVATE_H_ | ||
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| #include "flutter/shell/platform/embedder/embedder.h" | ||
| #include "flutter/shell/platform/linux/public/flutter_linux/fl_pixel_buffer_texture.h" | ||
| #include "flutter/shell/platform/linux/public/flutter_linux/fl_texture_registrar.h" | ||
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| G_BEGIN_DECLS | ||
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| /** | ||
| * fl_pixel_buffer_texture_populate: | ||
| * @texture: an #FlPixelBufferTexture. | ||
| * @width: width of the texture. | ||
| * @height: height of the texture. | ||
| * @opengl_texture: (out): return an #FlutterOpenGLTexture. | ||
| * @error: (allow-none): #GError location to store the error occurring, or | ||
| * %NULL to ignore. | ||
| * | ||
| * Attempts to populate the specified @opengl_texture with texture details | ||
| * such as the name, width, height and the pixel format. | ||
| * | ||
| * Returns: %TRUE on success. | ||
| */ | ||
| gboolean fl_pixel_buffer_texture_populate(FlPixelBufferTexture* texture, | ||
| uint32_t width, | ||
| uint32_t height, | ||
| FlutterOpenGLTexture* opengl_texture, | ||
| GError** error); | ||
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| G_END_DECLS | ||
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| #endif // FLUTTER_SHELL_PLATFORM_LINUX_FL_PIXEL_BUFFER_TEXTURE_PRIVATE_H_ |
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