2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
28 * glClearColor, glClearIndex, glClear() functions.
46 _mesa_ClearIndex( GLfloat c
)
48 GET_CURRENT_CONTEXT(ctx
);
50 ctx
->Color
.ClearIndex
= (GLuint
) c
;
55 * Specify the clear values for the color buffers.
57 * \param red red color component.
58 * \param green green color component.
59 * \param blue blue color component.
60 * \param alpha alpha component.
65 _mesa_ClearColor( GLclampf red
, GLclampf green
, GLclampf blue
, GLclampf alpha
)
67 GET_CURRENT_CONTEXT(ctx
);
69 ctx
->Color
.ClearColor
.f
[0] = red
;
70 ctx
->Color
.ClearColor
.f
[1] = green
;
71 ctx
->Color
.ClearColor
.f
[2] = blue
;
72 ctx
->Color
.ClearColor
.f
[3] = alpha
;
77 * GL_EXT_texture_integer
80 _mesa_ClearColorIiEXT(GLint r
, GLint g
, GLint b
, GLint a
)
82 GET_CURRENT_CONTEXT(ctx
);
84 ctx
->Color
.ClearColor
.i
[0] = r
;
85 ctx
->Color
.ClearColor
.i
[1] = g
;
86 ctx
->Color
.ClearColor
.i
[2] = b
;
87 ctx
->Color
.ClearColor
.i
[3] = a
;
92 * GL_EXT_texture_integer
95 _mesa_ClearColorIuiEXT(GLuint r
, GLuint g
, GLuint b
, GLuint a
)
97 GET_CURRENT_CONTEXT(ctx
);
99 ctx
->Color
.ClearColor
.ui
[0] = r
;
100 ctx
->Color
.ClearColor
.ui
[1] = g
;
101 ctx
->Color
.ClearColor
.ui
[2] = b
;
102 ctx
->Color
.ClearColor
.ui
[3] = a
;
107 * Returns true if color writes are enabled for the given color attachment.
109 * Beyond checking ColorMask, this uses _mesa_format_has_color_component to
110 * ignore components that don't actually exist in the format (such as X in
114 color_buffer_writes_enabled(const struct gl_context
*ctx
, unsigned idx
)
116 struct gl_renderbuffer
*rb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[idx
];
120 for (c
= 0; c
< 4; c
++) {
121 if (ctx
->Color
.ColorMask
[idx
][c
] &&
122 _mesa_format_has_color_component(rb
->Format
, c
)) {
135 * \param mask bit-mask indicating the buffers to be cleared.
137 * Flushes the vertices and verifies the parameter.
138 * If __struct gl_contextRec::NewState is set then calls _mesa_update_state()
139 * to update gl_frame_buffer::_Xmin, etc. If the rasterization mode is set to
140 * GL_RENDER then requests the driver to clear the buffers, via the
141 * dd_function_table::Clear callback.
143 static ALWAYS_INLINE
void
144 clear(struct gl_context
*ctx
, GLbitfield mask
, bool no_error
)
146 FLUSH_VERTICES(ctx
, 0);
147 FLUSH_CURRENT(ctx
, 0);
150 if (mask
& ~(GL_COLOR_BUFFER_BIT
|
151 GL_DEPTH_BUFFER_BIT
|
152 GL_STENCIL_BUFFER_BIT
|
153 GL_ACCUM_BUFFER_BIT
)) {
154 _mesa_error( ctx
, GL_INVALID_VALUE
, "glClear(0x%x)", mask
);
158 /* Accumulation buffers were removed in core contexts, and they never
159 * existed in OpenGL ES.
161 if ((mask
& GL_ACCUM_BUFFER_BIT
) != 0
162 && (ctx
->API
== API_OPENGL_CORE
|| _mesa_is_gles(ctx
))) {
163 _mesa_error( ctx
, GL_INVALID_VALUE
, "glClear(GL_ACCUM_BUFFER_BIT)");
169 _mesa_update_state( ctx
); /* update _Xmin, etc */
172 if (!no_error
&& ctx
->DrawBuffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
173 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
174 "glClear(incomplete framebuffer)");
178 if (ctx
->RasterDiscard
)
181 if (ctx
->RenderMode
== GL_RENDER
) {
182 GLbitfield bufferMask
;
184 /* don't clear depth buffer if depth writing disabled */
185 if (!ctx
->Depth
.Mask
)
186 mask
&= ~GL_DEPTH_BUFFER_BIT
;
188 /* Build the bitmask to send to device driver's Clear function.
189 * Note that the GL_COLOR_BUFFER_BIT flag will expand to 0, 1, 2 or 4
190 * of the BUFFER_BIT_FRONT/BACK_LEFT/RIGHT flags, or one of the
191 * BUFFER_BIT_COLORn flags.
194 if (mask
& GL_COLOR_BUFFER_BIT
) {
196 for (i
= 0; i
< ctx
->DrawBuffer
->_NumColorDrawBuffers
; i
++) {
197 GLint buf
= ctx
->DrawBuffer
->_ColorDrawBufferIndexes
[i
];
199 if (buf
>= 0 && color_buffer_writes_enabled(ctx
, i
)) {
200 bufferMask
|= 1 << buf
;
205 if ((mask
& GL_DEPTH_BUFFER_BIT
)
206 && ctx
->DrawBuffer
->Visual
.haveDepthBuffer
) {
207 bufferMask
|= BUFFER_BIT_DEPTH
;
210 if ((mask
& GL_STENCIL_BUFFER_BIT
)
211 && ctx
->DrawBuffer
->Visual
.haveStencilBuffer
) {
212 bufferMask
|= BUFFER_BIT_STENCIL
;
215 if ((mask
& GL_ACCUM_BUFFER_BIT
)
216 && ctx
->DrawBuffer
->Visual
.haveAccumBuffer
) {
217 bufferMask
|= BUFFER_BIT_ACCUM
;
220 assert(ctx
->Driver
.Clear
);
221 ctx
->Driver
.Clear(ctx
, bufferMask
);
227 _mesa_Clear_no_error(GLbitfield mask
)
229 GET_CURRENT_CONTEXT(ctx
);
230 clear(ctx
, mask
, true);
235 _mesa_Clear(GLbitfield mask
)
237 GET_CURRENT_CONTEXT(ctx
);
239 if (MESA_VERBOSE
& VERBOSE_API
)
240 _mesa_debug(ctx
, "glClear 0x%x\n", mask
);
242 clear(ctx
, mask
, false);
246 /** Returned by make_color_buffer_mask() for errors */
247 #define INVALID_MASK ~0x0U
251 * Convert the glClearBuffer 'drawbuffer' parameter into a bitmask of
252 * BUFFER_BIT_x values.
253 * Return INVALID_MASK if the drawbuffer value is invalid.
256 make_color_buffer_mask(struct gl_context
*ctx
, GLint drawbuffer
)
258 const struct gl_renderbuffer_attachment
*att
= ctx
->DrawBuffer
->Attachment
;
259 GLbitfield mask
= 0x0;
261 /* From the GL 4.0 specification:
262 * If buffer is COLOR, a particular draw buffer DRAW_BUFFERi is
263 * specified by passing i as the parameter drawbuffer, and value
264 * points to a four-element vector specifying the R, G, B, and A
265 * color to clear that draw buffer to. If the draw buffer is one
266 * of FRONT, BACK, LEFT, RIGHT, or FRONT_AND_BACK, identifying
267 * multiple buffers, each selected buffer is cleared to the same
270 * Note that "drawbuffer" and "draw buffer" have different meaning.
271 * "drawbuffer" specifies DRAW_BUFFERi, while "draw buffer" is what's
272 * assigned to DRAW_BUFFERi. It could be COLOR_ATTACHMENT0, FRONT, BACK,
275 if (drawbuffer
< 0 || drawbuffer
>= (GLint
)ctx
->Const
.MaxDrawBuffers
) {
279 switch (ctx
->DrawBuffer
->ColorDrawBuffer
[drawbuffer
]) {
281 if (att
[BUFFER_FRONT_LEFT
].Renderbuffer
)
282 mask
|= BUFFER_BIT_FRONT_LEFT
;
283 if (att
[BUFFER_FRONT_RIGHT
].Renderbuffer
)
284 mask
|= BUFFER_BIT_FRONT_RIGHT
;
287 /* For GLES contexts with a single buffered configuration, we actually
288 * only have a front renderbuffer, so any clear calls to GL_BACK should
289 * affect that buffer. See draw_buffer_enum_to_bitmask for details.
291 if (_mesa_is_gles(ctx
))
292 if (!ctx
->DrawBuffer
->Visual
.doubleBufferMode
)
293 if (att
[BUFFER_FRONT_LEFT
].Renderbuffer
)
294 mask
|= BUFFER_BIT_FRONT_LEFT
;
295 if (att
[BUFFER_BACK_LEFT
].Renderbuffer
)
296 mask
|= BUFFER_BIT_BACK_LEFT
;
297 if (att
[BUFFER_BACK_RIGHT
].Renderbuffer
)
298 mask
|= BUFFER_BIT_BACK_RIGHT
;
301 if (att
[BUFFER_FRONT_LEFT
].Renderbuffer
)
302 mask
|= BUFFER_BIT_FRONT_LEFT
;
303 if (att
[BUFFER_BACK_LEFT
].Renderbuffer
)
304 mask
|= BUFFER_BIT_BACK_LEFT
;
307 if (att
[BUFFER_FRONT_RIGHT
].Renderbuffer
)
308 mask
|= BUFFER_BIT_FRONT_RIGHT
;
309 if (att
[BUFFER_BACK_RIGHT
].Renderbuffer
)
310 mask
|= BUFFER_BIT_BACK_RIGHT
;
312 case GL_FRONT_AND_BACK
:
313 if (att
[BUFFER_FRONT_LEFT
].Renderbuffer
)
314 mask
|= BUFFER_BIT_FRONT_LEFT
;
315 if (att
[BUFFER_BACK_LEFT
].Renderbuffer
)
316 mask
|= BUFFER_BIT_BACK_LEFT
;
317 if (att
[BUFFER_FRONT_RIGHT
].Renderbuffer
)
318 mask
|= BUFFER_BIT_FRONT_RIGHT
;
319 if (att
[BUFFER_BACK_RIGHT
].Renderbuffer
)
320 mask
|= BUFFER_BIT_BACK_RIGHT
;
324 GLint buf
= ctx
->DrawBuffer
->_ColorDrawBufferIndexes
[drawbuffer
];
326 if (buf
>= 0 && att
[buf
].Renderbuffer
) {
339 * Clear signed integer color buffer or stencil buffer (not depth).
342 _mesa_ClearBufferiv(GLenum buffer
, GLint drawbuffer
, const GLint
*value
)
344 GET_CURRENT_CONTEXT(ctx
);
345 FLUSH_VERTICES(ctx
, 0);
347 FLUSH_CURRENT(ctx
, 0);
350 _mesa_update_state( ctx
);
355 /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
357 * "ClearBuffer generates an INVALID VALUE error if buffer is
358 * COLOR and drawbuffer is less than zero, or greater than the
359 * value of MAX DRAW BUFFERS minus one; or if buffer is DEPTH,
360 * STENCIL, or DEPTH STENCIL and drawbuffer is not zero."
362 if (drawbuffer
!= 0) {
363 _mesa_error(ctx
, GL_INVALID_VALUE
, "glClearBufferiv(drawbuffer=%d)",
367 else if (ctx
->DrawBuffer
->Attachment
[BUFFER_STENCIL
].Renderbuffer
368 && !ctx
->RasterDiscard
) {
369 /* Save current stencil clear value, set to 'value', do the
370 * stencil clear and restore the clear value.
371 * XXX in the future we may have a new ctx->Driver.ClearBuffer()
374 const GLuint clearSave
= ctx
->Stencil
.Clear
;
375 ctx
->Stencil
.Clear
= *value
;
376 ctx
->Driver
.Clear(ctx
, BUFFER_BIT_STENCIL
);
377 ctx
->Stencil
.Clear
= clearSave
;
382 const GLbitfield mask
= make_color_buffer_mask(ctx
, drawbuffer
);
383 if (mask
== INVALID_MASK
) {
384 _mesa_error(ctx
, GL_INVALID_VALUE
, "glClearBufferiv(drawbuffer=%d)",
388 else if (mask
&& !ctx
->RasterDiscard
) {
389 union gl_color_union clearSave
;
392 clearSave
= ctx
->Color
.ClearColor
;
394 COPY_4V(ctx
->Color
.ClearColor
.i
, value
);
395 /* clear buffer(s) */
396 ctx
->Driver
.Clear(ctx
, mask
);
398 ctx
->Color
.ClearColor
= clearSave
;
403 /* Page 498 of the PDF, section '17.4.3.1 Clearing Individual Buffers'
404 * of the OpenGL 4.5 spec states:
406 * "An INVALID_ENUM error is generated by ClearBufferiv and
407 * ClearNamedFramebufferiv if buffer is not COLOR or STENCIL."
409 _mesa_error(ctx
, GL_INVALID_ENUM
, "glClearBufferiv(buffer=%s)",
410 _mesa_enum_to_string(buffer
));
417 * The ClearBuffer framework is so complicated and so riddled with the
418 * assumption that the framebuffer is bound that, for now, we will just fake
419 * direct state access clearing for the user.
422 _mesa_ClearNamedFramebufferiv(GLuint framebuffer
, GLenum buffer
,
423 GLint drawbuffer
, const GLint
*value
)
427 _mesa_GetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING
, &oldfb
);
428 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, framebuffer
);
429 _mesa_ClearBufferiv(buffer
, drawbuffer
, value
);
430 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, (GLuint
) oldfb
);
436 * Clear unsigned integer color buffer (not depth, not stencil).
438 static ALWAYS_INLINE
void
439 clear_bufferuiv(struct gl_context
*ctx
, GLenum buffer
, GLint drawbuffer
,
440 const GLuint
*value
, bool no_error
)
442 FLUSH_VERTICES(ctx
, 0);
443 FLUSH_CURRENT(ctx
, 0);
446 _mesa_update_state( ctx
);
452 const GLbitfield mask
= make_color_buffer_mask(ctx
, drawbuffer
);
453 if (!no_error
&& mask
== INVALID_MASK
) {
454 _mesa_error(ctx
, GL_INVALID_VALUE
, "glClearBufferuiv(drawbuffer=%d)",
458 else if (mask
&& !ctx
->RasterDiscard
) {
459 union gl_color_union clearSave
;
462 clearSave
= ctx
->Color
.ClearColor
;
464 COPY_4V(ctx
->Color
.ClearColor
.ui
, value
);
465 /* clear buffer(s) */
466 ctx
->Driver
.Clear(ctx
, mask
);
468 ctx
->Color
.ClearColor
= clearSave
;
474 /* Page 498 of the PDF, section '17.4.3.1 Clearing Individual Buffers'
475 * of the OpenGL 4.5 spec states:
477 * "An INVALID_ENUM error is generated by ClearBufferuiv and
478 * ClearNamedFramebufferuiv if buffer is not COLOR."
480 _mesa_error(ctx
, GL_INVALID_ENUM
, "glClearBufferuiv(buffer=%s)",
481 _mesa_enum_to_string(buffer
));
489 _mesa_ClearBufferuiv(GLenum buffer
, GLint drawbuffer
, const GLuint
*value
)
491 GET_CURRENT_CONTEXT(ctx
);
492 clear_bufferuiv(ctx
, buffer
, drawbuffer
, value
, false);
497 * The ClearBuffer framework is so complicated and so riddled with the
498 * assumption that the framebuffer is bound that, for now, we will just fake
499 * direct state access clearing for the user.
502 _mesa_ClearNamedFramebufferuiv(GLuint framebuffer
, GLenum buffer
,
503 GLint drawbuffer
, const GLuint
*value
)
507 _mesa_GetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING
, &oldfb
);
508 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, framebuffer
);
509 _mesa_ClearBufferuiv(buffer
, drawbuffer
, value
);
510 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, (GLuint
) oldfb
);
516 * Clear fixed-pt or float color buffer or depth buffer (not stencil).
518 static ALWAYS_INLINE
void
519 clear_bufferfv(struct gl_context
*ctx
, GLenum buffer
, GLint drawbuffer
,
520 const GLfloat
*value
, bool no_error
)
522 FLUSH_VERTICES(ctx
, 0);
523 FLUSH_CURRENT(ctx
, 0);
526 _mesa_update_state( ctx
);
531 /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
533 * "ClearBuffer generates an INVALID VALUE error if buffer is
534 * COLOR and drawbuffer is less than zero, or greater than the
535 * value of MAX DRAW BUFFERS minus one; or if buffer is DEPTH,
536 * STENCIL, or DEPTH STENCIL and drawbuffer is not zero."
538 if (!no_error
&& drawbuffer
!= 0) {
539 _mesa_error(ctx
, GL_INVALID_VALUE
, "glClearBufferfv(drawbuffer=%d)",
543 else if (ctx
->DrawBuffer
->Attachment
[BUFFER_DEPTH
].Renderbuffer
544 && !ctx
->RasterDiscard
) {
545 /* Save current depth clear value, set to 'value', do the
546 * depth clear and restore the clear value.
547 * XXX in the future we may have a new ctx->Driver.ClearBuffer()
550 const GLclampd clearSave
= ctx
->Depth
.Clear
;
551 ctx
->Depth
.Clear
= *value
;
552 ctx
->Driver
.Clear(ctx
, BUFFER_BIT_DEPTH
);
553 ctx
->Depth
.Clear
= clearSave
;
555 /* clear depth buffer to value */
559 const GLbitfield mask
= make_color_buffer_mask(ctx
, drawbuffer
);
560 if (!no_error
&& mask
== INVALID_MASK
) {
561 _mesa_error(ctx
, GL_INVALID_VALUE
, "glClearBufferfv(drawbuffer=%d)",
565 else if (mask
&& !ctx
->RasterDiscard
) {
566 union gl_color_union clearSave
;
569 clearSave
= ctx
->Color
.ClearColor
;
571 COPY_4V(ctx
->Color
.ClearColor
.f
, value
);
572 /* clear buffer(s) */
573 ctx
->Driver
.Clear(ctx
, mask
);
575 ctx
->Color
.ClearColor
= clearSave
;
581 /* Page 498 of the PDF, section '17.4.3.1 Clearing Individual Buffers'
582 * of the OpenGL 4.5 spec states:
584 * "An INVALID_ENUM error is generated by ClearBufferfv and
585 * ClearNamedFramebufferfv if buffer is not COLOR or DEPTH."
587 _mesa_error(ctx
, GL_INVALID_ENUM
, "glClearBufferfv(buffer=%s)",
588 _mesa_enum_to_string(buffer
));
596 _mesa_ClearBufferfv_no_error(GLenum buffer
, GLint drawbuffer
,
597 const GLfloat
*value
)
599 GET_CURRENT_CONTEXT(ctx
);
600 clear_bufferfv(ctx
, buffer
, drawbuffer
, value
, true);
605 _mesa_ClearBufferfv(GLenum buffer
, GLint drawbuffer
, const GLfloat
*value
)
607 GET_CURRENT_CONTEXT(ctx
);
608 clear_bufferfv(ctx
, buffer
, drawbuffer
, value
, false);
613 * The ClearBuffer framework is so complicated and so riddled with the
614 * assumption that the framebuffer is bound that, for now, we will just fake
615 * direct state access clearing for the user.
618 _mesa_ClearNamedFramebufferfv(GLuint framebuffer
, GLenum buffer
,
619 GLint drawbuffer
, const GLfloat
*value
)
623 _mesa_GetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING
, &oldfb
);
624 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, framebuffer
);
625 _mesa_ClearBufferfv(buffer
, drawbuffer
, value
);
626 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, (GLuint
) oldfb
);
632 * Clear depth/stencil buffer only.
634 static ALWAYS_INLINE
void
635 clear_bufferfi(struct gl_context
*ctx
, GLenum buffer
, GLint drawbuffer
,
636 GLfloat depth
, GLint stencil
, bool no_error
)
640 FLUSH_VERTICES(ctx
, 0);
641 FLUSH_CURRENT(ctx
, 0);
644 if (buffer
!= GL_DEPTH_STENCIL
) {
645 _mesa_error(ctx
, GL_INVALID_ENUM
, "glClearBufferfi(buffer=%s)",
646 _mesa_enum_to_string(buffer
));
650 /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
652 * "ClearBuffer generates an INVALID VALUE error if buffer is
653 * COLOR and drawbuffer is less than zero, or greater than the
654 * value of MAX DRAW BUFFERS minus one; or if buffer is DEPTH,
655 * STENCIL, or DEPTH STENCIL and drawbuffer is not zero."
657 if (drawbuffer
!= 0) {
658 _mesa_error(ctx
, GL_INVALID_VALUE
, "glClearBufferfi(drawbuffer=%d)",
664 if (ctx
->RasterDiscard
)
668 _mesa_update_state( ctx
);
671 if (ctx
->DrawBuffer
->Attachment
[BUFFER_DEPTH
].Renderbuffer
)
672 mask
|= BUFFER_BIT_DEPTH
;
673 if (ctx
->DrawBuffer
->Attachment
[BUFFER_STENCIL
].Renderbuffer
)
674 mask
|= BUFFER_BIT_STENCIL
;
677 /* save current clear values */
678 const GLclampd clearDepthSave
= ctx
->Depth
.Clear
;
679 const GLuint clearStencilSave
= ctx
->Stencil
.Clear
;
681 /* set new clear values */
682 ctx
->Depth
.Clear
= depth
;
683 ctx
->Stencil
.Clear
= stencil
;
686 ctx
->Driver
.Clear(ctx
, mask
);
689 ctx
->Depth
.Clear
= clearDepthSave
;
690 ctx
->Stencil
.Clear
= clearStencilSave
;
696 _mesa_ClearBufferfi_no_error(GLenum buffer
, GLint drawbuffer
,
697 GLfloat depth
, GLint stencil
)
699 GET_CURRENT_CONTEXT(ctx
);
700 clear_bufferfi(ctx
, buffer
, drawbuffer
, depth
, stencil
, true);
705 _mesa_ClearBufferfi(GLenum buffer
, GLint drawbuffer
,
706 GLfloat depth
, GLint stencil
)
708 GET_CURRENT_CONTEXT(ctx
);
709 clear_bufferfi(ctx
, buffer
, drawbuffer
, depth
, stencil
, false);
714 * The ClearBuffer framework is so complicated and so riddled with the
715 * assumption that the framebuffer is bound that, for now, we will just fake
716 * direct state access clearing for the user.
719 _mesa_ClearNamedFramebufferfi(GLuint framebuffer
, GLenum buffer
,
720 GLint drawbuffer
, GLfloat depth
, GLint stencil
)
724 _mesa_GetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING
, &oldfb
);
725 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, framebuffer
);
726 _mesa_ClearBufferfi(buffer
, drawbuffer
, depth
, stencil
);
727 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, (GLuint
) oldfb
);