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cogl-buffer: Use TEXTURE as the only value for CoglBufferUsageHint

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We should try to use more explicit defines than GL for our hints. For
now we only support using a CoglBuffer to generate textures.
This commit is contained in:
Damien Lespiau 2010-02-08 17:11:43 +00:00
parent 273fd23742
commit 23717452bf
3 changed files with 13 additions and 39 deletions
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26
cogl/cogl-buffer.c
View File

@ -147,33 +147,13 @@ GLenum
_cogl_buffer_hints_to_gl_enum (CoglBufferUsageHint usage_hint,
CoglBufferUpdateHint update_hint)
{
if (usage_hint == COGL_BUFFER_USAGE_HINT_DRAW)
{
/* usage hint is always TEXTURE for now */
if (update_hint == COGL_BUFFER_UPDATE_HINT_STATIC)
return GL_STATIC_DRAW;
if (update_hint == COGL_BUFFER_UPDATE_HINT_DYNAMIC)
return GL_DYNAMIC_DRAW;
if (update_hint == COGL_BUFFER_UPDATE_HINT_STREAM)
return GL_STREAM_DRAW;
}
if (usage_hint == COGL_BUFFER_USAGE_HINT_READ)
{
if (update_hint == COGL_BUFFER_UPDATE_HINT_STATIC)
return GL_STATIC_READ;
if (update_hint == COGL_BUFFER_UPDATE_HINT_DYNAMIC)
return GL_DYNAMIC_READ;
if (update_hint == COGL_BUFFER_UPDATE_HINT_STREAM)
return GL_STREAM_READ;
}
if (usage_hint == COGL_BUFFER_USAGE_HINT_COPY)
{
if (update_hint == COGL_BUFFER_UPDATE_HINT_STATIC)
return GL_STATIC_COPY;
if (update_hint == COGL_BUFFER_UPDATE_HINT_DYNAMIC)
return GL_DYNAMIC_COPY;
if (update_hint == COGL_BUFFER_UPDATE_HINT_STREAM)
return GL_STREAM_COPY;
}
return GL_STATIC_DRAW;
}
@ -219,8 +199,8 @@ cogl_buffer_set_usage_hint_EXP (CoglHandle handle,
if (!cogl_is_buffer (handle))
return;
if (G_UNLIKELY (hint > COGL_BUFFER_USAGE_HINT_COPY))
hint = COGL_BUFFER_USAGE_HINT_DRAW;
if (G_UNLIKELY (hint > COGL_BUFFER_USAGE_HINT_TEXTURE))
hint = COGL_BUFFER_USAGE_HINT_TEXTURE;
COGL_BUFFER (handle)->usage_hint = hint;
}

12
cogl/cogl-buffer.h
View File

@ -75,12 +75,8 @@ cogl_buffer_get_size (CoglHandle handle);
/**
* CoglBufferUsageHint:
* @COGL_BUFFER_USAGE_HINT_DRAW: the buffer will be used as a source for
* drawing commands (e.g. texture), the data coming from the application
* @COGL_BUFFER_USAGE_HINT_READ: the buffer will be read by the application,
* the data store being modified by the GPU
* @COGL_BUFFER_USAGE_HINT_COPY: the buffer will be used as a source for
* drawing commands, the data coming from the GPU
* @COGL_BUFFER_USAGE_HINT_TEXTURE: the buffer will be used as a source data
* for a texture
*
* The usage hint on a buffer allows the user to give some clue on how the
* buffer will be used.
@ -89,9 +85,7 @@ cogl_buffer_get_size (CoglHandle handle);
* Stability: Unstable
*/
typedef enum { /*< prefix=COGL_BUFFER_USAGE_HINT >*/
COGL_BUFFER_USAGE_HINT_DRAW,
COGL_BUFFER_USAGE_HINT_READ,
COGL_BUFFER_USAGE_HINT_COPY,
COGL_BUFFER_USAGE_HINT_TEXTURE,
} CoglBufferUsageHint;
/**

2
cogl/cogl-pixel-buffer.c
View File

@ -148,7 +148,7 @@ cogl_pixel_buffer_new_EXP (guint size)
/* parent's constructor */
_cogl_buffer_initialize (buffer,
size,
COGL_BUFFER_USAGE_HINT_DRAW,
COGL_BUFFER_USAGE_HINT_TEXTURE,
COGL_BUFFER_UPDATE_HINT_STATIC);
/* malloc version only for GLES */