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gltexture: Split out a function

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No functional changes
This commit is contained in:
Benjamin Otte
2024-09-25 03:04:46 +02:00
parent f6b3f321a4
commit 8b166dff74
1 changed files with 101 additions and 78 deletions
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179
gdk/gdkgltexture.c
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@@ -190,50 +190,53 @@ gdk_gl_texture_find_format (GdkGLContext *context,
return FALSE;
}
static inline void
gdk_gl_texture_do_download (GdkGLTexture *self,
GdkGLContext *context,
gpointer download_)
static void
gdk_gl_context_download (GdkGLContext *context,
GLuint tex_id,
GdkMemoryFormat tex_format,
GdkColorState *tex_color_state,
guchar *dest_data,
gsize dest_stride,
GdkMemoryFormat dest_format,
GdkColorState *dest_color_state,
gsize width,
gsize height)
{
GdkTexture *texture = GDK_TEXTURE (self);
GdkMemoryFormat format;
gsize expected_stride;
Download *download = download_;
GLint gl_internal_format, gl_internal_srgb_format;
GLenum gl_format, gl_type;
GLint gl_swizzle[4];
format = gdk_texture_get_format (texture),
expected_stride = texture->width * gdk_memory_format_bytes_per_pixel (download->format);
expected_stride = width * gdk_memory_format_bytes_per_pixel (dest_format);
if (!gdk_gl_context_get_use_es (context) &&
((gdk_gl_context_get_format_flags (context, format) & GDK_GL_FORMAT_USABLE) == GDK_GL_FORMAT_USABLE))
((gdk_gl_context_get_format_flags (context, tex_format) & GDK_GL_FORMAT_USABLE) == GDK_GL_FORMAT_USABLE))
{
gdk_memory_format_gl_format (format,
gdk_memory_format_gl_format (tex_format,
gdk_gl_context_get_use_es (context),
&gl_internal_format, &gl_internal_srgb_format,
&gl_format, &gl_type, gl_swizzle);
if (download->stride == expected_stride &&
download->format == format)
if (dest_stride == expected_stride &&
dest_format == tex_format)
{
glGetTexImage (GL_TEXTURE_2D,
0,
gl_format,
gl_type,
download->data);
dest_data);
gdk_memory_convert_color_state (download->data,
download->stride,
download->format,
download->color_state,
texture->color_state,
texture->width,
texture->height);
gdk_memory_convert_color_state (dest_data,
dest_stride,
dest_format,
dest_color_state,
tex_color_state,
width,
height);
}
else
{
gsize stride = texture->width * gdk_memory_format_bytes_per_pixel (format);
guchar *pixels = g_malloc_n (stride, texture->height);
gsize stride = width * gdk_memory_format_bytes_per_pixel (tex_format);
guchar *pixels = g_malloc_n (stride, height);
glPixelStorei (GL_PACK_ALIGNMENT, 1);
glGetTexImage (GL_TEXTURE_2D,
@@ -242,16 +245,16 @@ gdk_gl_texture_do_download (GdkGLTexture *self,
gl_type,
pixels);
gdk_memory_convert (download->data,
download->stride,
download->format,
download->color_state,
gdk_memory_convert (dest_data,
dest_stride,
dest_format,
dest_color_state,
pixels,
stride,
format,
texture->color_state,
texture->width,
texture->height);
tex_format,
tex_color_state,
width,
height);
g_free (pixels);
}
@@ -264,21 +267,21 @@ gdk_gl_texture_do_download (GdkGLTexture *self,
glGenFramebuffers (1, &fbo);
glBindFramebuffer (GL_FRAMEBUFFER, fbo);
glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, self->id, 0);
glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex_id, 0);
if (gdk_gl_context_check_version (context, "4.3", "3.1"))
{
GLint read_format, read_type;
glGetFramebufferParameteriv (GL_FRAMEBUFFER, GL_IMPLEMENTATION_COLOR_READ_FORMAT, &read_format);
glGetFramebufferParameteriv (GL_FRAMEBUFFER, GL_IMPLEMENTATION_COLOR_READ_TYPE, &read_type);
if (gdk_gl_texture_find_format (context, gdk_memory_format_alpha (format), read_format, read_type, &actual_format))
if (gdk_gl_texture_find_format (context, gdk_memory_format_alpha (tex_format), read_format, read_type, &actual_format))
{
gl_read_format = read_format;
gl_read_type = read_type;
}
else
{
actual_format = gdk_memory_depth_get_format (gdk_memory_format_get_depth (format, FALSE));
if (gdk_memory_format_alpha (format) == GDK_MEMORY_ALPHA_STRAIGHT)
actual_format = gdk_memory_depth_get_format (gdk_memory_format_get_depth (tex_format, FALSE));
if (gdk_memory_format_alpha (tex_format) == GDK_MEMORY_ALPHA_STRAIGHT)
actual_format = gdk_memory_format_get_straight (actual_format);
gdk_memory_format_gl_format (actual_format,
@@ -289,8 +292,8 @@ gdk_gl_texture_do_download (GdkGLTexture *self,
}
else
{
actual_format = gdk_memory_depth_get_format (gdk_memory_format_get_depth (format, FALSE));
if (gdk_memory_format_alpha (format) == GDK_MEMORY_ALPHA_STRAIGHT)
actual_format = gdk_memory_depth_get_format (gdk_memory_format_get_depth (tex_format, FALSE));
if (gdk_memory_format_alpha (tex_format) == GDK_MEMORY_ALPHA_STRAIGHT)
actual_format = gdk_memory_format_get_straight (actual_format);
gdk_memory_format_gl_format (actual_format,
@@ -299,32 +302,32 @@ gdk_gl_texture_do_download (GdkGLTexture *self,
&gl_read_format, &gl_read_type, gl_swizzle);
}
if (download->format == actual_format &&
(download->stride == expected_stride))
if (dest_format == actual_format &&
(dest_stride == expected_stride))
{
glReadPixels (0, 0,
texture->width, texture->height,
width, height,
gl_read_format,
gl_read_type,
download->data);
dest_data);
gdk_memory_convert_color_state (download->data,
download->stride,
download->format,
download->color_state,
texture->color_state,
texture->width,
texture->height);
gdk_memory_convert_color_state (dest_data,
dest_stride,
dest_format,
dest_color_state,
tex_color_state,
width,
height);
}
else
{
gsize actual_bpp = gdk_memory_format_bytes_per_pixel (actual_format);
gsize stride = actual_bpp * texture->width;
guchar *pixels = g_malloc_n (stride, texture->height);
gsize stride = actual_bpp * width;
guchar *pixels = g_malloc_n (stride, height);
glPixelStorei (GL_PACK_ALIGNMENT, 1);
glReadPixels (0, 0,
texture->width, texture->height,
width, height,
gl_read_format,
gl_read_type,
pixels);
@@ -333,30 +336,30 @@ gdk_gl_texture_do_download (GdkGLTexture *self,
if (gl_read_format == GL_RGBA &&
gl_read_type == GL_UNSIGNED_BYTE &&
(format == GDK_MEMORY_G8A8 ||
format == GDK_MEMORY_G8A8_PREMULTIPLIED ||
format == GDK_MEMORY_G8 ||
format == GDK_MEMORY_A8))
(tex_format == GDK_MEMORY_G8A8 ||
tex_format == GDK_MEMORY_G8A8_PREMULTIPLIED ||
tex_format == GDK_MEMORY_G8 ||
tex_format == GDK_MEMORY_A8))
{
for (unsigned int y = 0; y < texture->height; y++)
for (unsigned int y = 0; y < height; y++)
{
for (unsigned int x = 0; x < texture->width; x++)
for (unsigned int x = 0; x < width; x++)
{
guchar *data = &pixels[y * stride + x * actual_bpp];
if (format == GDK_MEMORY_G8A8 ||
format == GDK_MEMORY_G8A8_PREMULTIPLIED)
if (tex_format == GDK_MEMORY_G8A8 ||
tex_format == GDK_MEMORY_G8A8_PREMULTIPLIED)
{
data[3] = data[1];
data[1] = data[0];
data[2] = data[0];
}
else if (format == GDK_MEMORY_G8)
else if (tex_format == GDK_MEMORY_G8)
{
data[1] = data[0];
data[2] = data[0];
data[3] = 0xff;
}
else if (format == GDK_MEMORY_A8)
else if (tex_format == GDK_MEMORY_A8)
{
data[3] = data[0];
data[0] = 0;
@@ -369,30 +372,30 @@ gdk_gl_texture_do_download (GdkGLTexture *self,
if (gl_read_format == GL_RGBA &&
gl_read_type == GL_UNSIGNED_SHORT &&
(format == GDK_MEMORY_G16A16 ||
format == GDK_MEMORY_G16A16_PREMULTIPLIED ||
format == GDK_MEMORY_G16 ||
format == GDK_MEMORY_A16))
(tex_format == GDK_MEMORY_G16A16 ||
tex_format == GDK_MEMORY_G16A16_PREMULTIPLIED ||
tex_format == GDK_MEMORY_G16 ||
tex_format == GDK_MEMORY_A16))
{
for (unsigned int y = 0; y < texture->height; y++)
for (unsigned int y = 0; y < height; y++)
{
for (unsigned int x = 0; x < texture->width; x++)
for (unsigned int x = 0; x < width; x++)
{
guint16 *data = (guint16 *) &pixels[y * stride + x * actual_bpp];
if (format == GDK_MEMORY_G16A16 ||
format == GDK_MEMORY_G16A16_PREMULTIPLIED)
if (tex_format == GDK_MEMORY_G16A16 ||
tex_format == GDK_MEMORY_G16A16_PREMULTIPLIED)
{
data[3] = data[1];
data[1] = data[0];
data[2] = data[0];
}
else if (format == GDK_MEMORY_G16)
else if (tex_format == GDK_MEMORY_G16)
{
data[1] = data[0];
data[2] = data[0];
data[3] = 0xffff;
}
else if (format == GDK_MEMORY_A16)
else if (tex_format == GDK_MEMORY_A16)
{
data[3] = data[0];
data[0] = 0;
@@ -403,16 +406,16 @@ gdk_gl_texture_do_download (GdkGLTexture *self,
}
}
gdk_memory_convert (download->data,
download->stride,
download->format,
download->color_state,
gdk_memory_convert (dest_data,
dest_stride,
dest_format,
dest_color_state,
pixels,
stride,
actual_format,
texture->color_state,
texture->width,
texture->height);
tex_color_state,
width,
height);
g_free (pixels);
}
@@ -421,6 +424,26 @@ gdk_gl_texture_do_download (GdkGLTexture *self,
}
}
static void
gdk_gl_texture_do_download (GdkGLTexture *self,
GdkGLContext *context,
gpointer download_)
{
GdkTexture *texture = GDK_TEXTURE (self);
Download *download = download_;
gdk_gl_context_download (context,
gdk_gl_texture_get_id (self),
gdk_texture_get_format (texture),
gdk_texture_get_color_state (texture),
download->data,
download->stride,
download->format,
download->color_state,
gdk_texture_get_width (texture),
gdk_texture_get_height (texture));
}
static void
gdk_gl_texture_download (GdkTexture *texture,
GdkMemoryFormat format,