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clean-up some _mesa_make_current() code

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Brian Paul 2005-09-14 03:11:36 +00:00
parent 5250aa7c6a
commit a702bbfff3
1 changed files with 32 additions and 35 deletions
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67
src/mesa/main/context.c
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@ -1500,23 +1500,36 @@ check_compatible(const GLcontext *ctx, const GLframebuffer *buffer)
/**
* Bind the given context to the given draw-buffer and read-buffer and
* make it the current context for this thread.
* Do one-time initialization for the given framebuffer. Specifically,
* ask the driver for the window's current size and update the framebuffer
* object to match.
* Really, the device driver should totally take care of this.
*/
static void
initialize_framebuffer_size(GLcontext *ctx, GLframebuffer *fb)
{
GLuint width, height;
ASSERT(ctx->Driver.GetBufferSize);
ctx->Driver.GetBufferSize(fb, &width, &height);
if (ctx->Driver.ResizeBuffers)
ctx->Driver.ResizeBuffers(ctx, fb, width, height);
fb->Initialized = GL_TRUE;
}
/**
* Bind the given context to the given drawBuffer and readBuffer and
* make it the current context for the calling thread.
* We'll render into the drawBuffer and read pixels from the
* readBuffer (i.e. glRead/CopyPixels, glCopyTexImage, etc).
*
* \param newCtx new GL context. If NULL then there will be no current GL
* context.
* \param drawBuffer draw framebuffer.
* \param readBuffer read framebuffer.
*
* Check that the context's and framebuffer's visuals are compatible, returning
* immediately otherwise. Sets the glapi current context via
* _glapi_set_context(). If \p newCtx is not NULL, associates \p drawBuffer and
* \p readBuffer with it and calls dd_function_table::ResizeBuffers if the buffers size has changed.
* Calls dd_function_table::MakeCurrent callback if defined.
* We check that the context's and framebuffer's visuals are compatible
* and return immediately if they're not.
*
* When a context is bound by the first time and the \c MESA_INFO environment
* variable is set it calls print_info() as an aid for remote user
* troubleshooting.
* \param newCtx the new GL context. If NULL then there will be no current GL
* context.
* \param drawBuffer the drawing framebuffer
* \param readBuffer the reading framebuffer
*/
void
_mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer,
@ -1570,32 +1583,16 @@ _mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer,
#if _HAVE_FULL_GL
if (!drawBuffer->Initialized) {
/* get initial window size */
GLuint bufWidth, bufHeight;
/* ask device driver for size of the buffer */
(*newCtx->Driver.GetBufferSize)(drawBuffer, &bufWidth, &bufHeight);
/* set initial buffer size */
if (newCtx->Driver.ResizeBuffers)
newCtx->Driver.ResizeBuffers(newCtx, drawBuffer,
bufWidth, bufHeight);
drawBuffer->Initialized = GL_TRUE;
initialize_framebuffer_size(newCtx, drawBuffer);
}
if (readBuffer != drawBuffer && !readBuffer->Initialized) {
/* get initial window size */
GLuint bufWidth, bufHeight;
/* ask device driver for size of the buffer */
(*newCtx->Driver.GetBufferSize)(readBuffer, &bufWidth, &bufHeight);
/* set initial buffer size */
if (newCtx->Driver.ResizeBuffers)
newCtx->Driver.ResizeBuffers(newCtx, readBuffer,
bufWidth, bufHeight);
readBuffer->Initialized = GL_TRUE;
initialize_framebuffer_size(newCtx, readBuffer);
}
#endif
if (newCtx->FirstTimeCurrent) {
/* set initial viewport and scissor size now */
_mesa_set_viewport(newCtx, 0, 0, drawBuffer->Width, drawBuffer->Height);
_mesa_set_viewport(newCtx, 0, 0,
drawBuffer->Width, drawBuffer->Height);
newCtx->Scissor.Width = drawBuffer->Width;
newCtx->Scissor.Height = drawBuffer->Height;
}