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mesa: add clear() helper

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Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
This commit is contained in:
Samuel Pitoiset
2017-06-26 17:44:44 +02:00
parent 48400e0bd6
commit 34e8d0e4ba
1 changed files with 31 additions and 23 deletions
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54
src/mesa/main/clear.c
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@@ -140,40 +140,36 @@ color_buffer_writes_enabled(const struct gl_context *ctx, unsigned idx)
* GL_RENDER then requests the driver to clear the buffers, via the
* dd_function_table::Clear callback.
*/
void GLAPIENTRY
_mesa_Clear( GLbitfield mask )
static ALWAYS_INLINE void
clear(struct gl_context *ctx, GLbitfield mask, bool no_error)
{
GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0);
FLUSH_CURRENT(ctx, 0);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glClear 0x%x\n", mask);
if (!no_error) {
if (mask & ~(GL_COLOR_BUFFER_BIT |
GL_DEPTH_BUFFER_BIT |
GL_STENCIL_BUFFER_BIT |
GL_ACCUM_BUFFER_BIT)) {
_mesa_error( ctx, GL_INVALID_VALUE, "glClear(0x%x)", mask);
return;
}
if (mask & ~(GL_COLOR_BUFFER_BIT |
GL_DEPTH_BUFFER_BIT |
GL_STENCIL_BUFFER_BIT |
GL_ACCUM_BUFFER_BIT)) {
/* invalid bit set */
_mesa_error( ctx, GL_INVALID_VALUE, "glClear(0x%x)", mask);
return;
}
/* Accumulation buffers were removed in core contexts, and they never
* existed in OpenGL ES.
*/
if ((mask & GL_ACCUM_BUFFER_BIT) != 0
&& (ctx->API == API_OPENGL_CORE || _mesa_is_gles(ctx))) {
_mesa_error( ctx, GL_INVALID_VALUE, "glClear(GL_ACCUM_BUFFER_BIT)");
return;
/* Accumulation buffers were removed in core contexts, and they never
* existed in OpenGL ES.
*/
if ((mask & GL_ACCUM_BUFFER_BIT) != 0
&& (ctx->API == API_OPENGL_CORE || _mesa_is_gles(ctx))) {
_mesa_error( ctx, GL_INVALID_VALUE, "glClear(GL_ACCUM_BUFFER_BIT)");
return;
}
}
if (ctx->NewState) {
_mesa_update_state( ctx ); /* update _Xmin, etc */
}
if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
if (!no_error && ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
_mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
"glClear(incomplete framebuffer)");
return;
@@ -227,6 +223,18 @@ _mesa_Clear( GLbitfield mask )
}
void GLAPIENTRY
_mesa_Clear(GLbitfield mask)
{
GET_CURRENT_CONTEXT(ctx);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glClear 0x%x\n", mask);
clear(ctx, mask, false);
}
/** Returned by make_color_buffer_mask() for errors */
#define INVALID_MASK ~0x0U