1 /**************************************************************************
3 * Copyright 2007 VMware, Inc.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Framebuffer/renderbuffer functions.
36 #include "main/imports.h"
37 #include "main/context.h"
38 #include "main/fbobject.h"
39 #include "main/framebuffer.h"
40 #include "main/glformats.h"
41 #include "main/macros.h"
42 #include "main/renderbuffer.h"
44 #include "pipe/p_context.h"
45 #include "pipe/p_defines.h"
46 #include "pipe/p_screen.h"
47 #include "st_context.h"
48 #include "st_cb_fbo.h"
49 #include "st_cb_flush.h"
50 #include "st_cb_texture.h"
51 #include "st_format.h"
52 #include "st_texture.h"
53 #include "st_manager.h"
55 #include "util/u_format.h"
56 #include "util/u_inlines.h"
57 #include "util/u_surface.h"
61 st_renderbuffer_alloc_sw_storage(struct gl_context * ctx,
62 struct gl_renderbuffer *rb,
63 GLenum internalFormat,
64 GLuint width, GLuint height)
66 struct st_context *st = st_context(ctx);
67 struct st_renderbuffer *strb = st_renderbuffer(rb);
68 enum pipe_format format;
74 if (internalFormat == GL_RGBA16_SNORM) {
75 /* Special case for software accum buffers. Otherwise, if the
76 * call to st_choose_renderbuffer_format() fails (because the
77 * driver doesn't support signed 16-bit/channel colors) we'd
78 * just return without allocating the software accum buffer.
80 format = PIPE_FORMAT_R16G16B16A16_SNORM;
83 format = st_choose_renderbuffer_format(st, internalFormat, 0);
85 /* Not setting gl_renderbuffer::Format here will cause
86 * FRAMEBUFFER_UNSUPPORTED and ValidateFramebuffer will not be called.
88 if (format == PIPE_FORMAT_NONE) {
93 strb->Base.Format = st_pipe_format_to_mesa_format(format);
95 size = _mesa_format_image_size(strb->Base.Format, width, height, 1);
96 strb->data = malloc(size);
97 return strb->data != NULL;
102 * gl_renderbuffer::AllocStorage()
103 * This is called to allocate the original drawing surface, and
104 * during window resize.
107 st_renderbuffer_alloc_storage(struct gl_context * ctx,
108 struct gl_renderbuffer *rb,
109 GLenum internalFormat,
110 GLuint width, GLuint height)
112 struct st_context *st = st_context(ctx);
113 struct pipe_context *pipe = st->pipe;
114 struct pipe_screen *screen = st->pipe->screen;
115 struct st_renderbuffer *strb = st_renderbuffer(rb);
116 enum pipe_format format = PIPE_FORMAT_NONE;
117 struct pipe_surface surf_tmpl;
118 struct pipe_resource templ;
120 /* init renderbuffer fields */
121 strb->Base.Width = width;
122 strb->Base.Height = height;
123 strb->Base._BaseFormat = _mesa_base_fbo_format(ctx, internalFormat);
124 strb->defined = GL_FALSE; /* undefined contents now */
126 if (strb->software) {
127 return st_renderbuffer_alloc_sw_storage(ctx, rb, internalFormat,
131 /* Free the old surface and texture
133 pipe_surface_reference( &strb->surface, NULL );
134 pipe_resource_reference( &strb->texture, NULL );
136 /* If an sRGB framebuffer is unsupported, sRGB formats behave like linear
139 if (!ctx->Extensions.EXT_framebuffer_sRGB) {
140 internalFormat = _mesa_get_linear_internalformat(internalFormat);
143 /* Handle multisample renderbuffers first.
145 * From ARB_framebuffer_object:
146 * If <samples> is zero, then RENDERBUFFER_SAMPLES is set to zero.
147 * Otherwise <samples> represents a request for a desired minimum
148 * number of samples. Since different implementations may support
149 * different sample counts for multisampled rendering, the actual
150 * number of samples allocated for the renderbuffer image is
151 * implementation dependent. However, the resulting value for
152 * RENDERBUFFER_SAMPLES is guaranteed to be greater than or equal
153 * to <samples> and no more than the next larger sample count supported
154 * by the implementation.
156 * So let's find the supported number of samples closest to NumSamples.
157 * (NumSamples == 1) is treated the same as (NumSamples == 0).
159 if (rb->NumSamples > 1) {
162 for (i = rb->NumSamples; i <= ctx->Const.MaxSamples; i++) {
163 format = st_choose_renderbuffer_format(st, internalFormat, i);
165 if (format != PIPE_FORMAT_NONE) {
171 format = st_choose_renderbuffer_format(st, internalFormat, 0);
174 /* Not setting gl_renderbuffer::Format here will cause
175 * FRAMEBUFFER_UNSUPPORTED and ValidateFramebuffer will not be called.
177 if (format == PIPE_FORMAT_NONE) {
181 strb->Base.Format = st_pipe_format_to_mesa_format(format);
183 if (width == 0 || height == 0) {
184 /* if size is zero, nothing to allocate */
188 /* Setup new texture template.
190 memset(&templ, 0, sizeof(templ));
191 templ.target = st->internal_target;
192 templ.format = format;
193 templ.width0 = width;
194 templ.height0 = height;
196 templ.array_size = 1;
197 templ.nr_samples = rb->NumSamples;
198 if (util_format_is_depth_or_stencil(format)) {
199 templ.bind = PIPE_BIND_DEPTH_STENCIL;
201 else if (strb->Base.Name != 0) {
202 /* this is a user-created renderbuffer */
203 templ.bind = PIPE_BIND_RENDER_TARGET;
206 /* this is a window-system buffer */
207 templ.bind = (PIPE_BIND_DISPLAY_TARGET |
208 PIPE_BIND_RENDER_TARGET);
211 strb->texture = screen->resource_create(screen, &templ);
216 u_surface_default_template(&surf_tmpl, strb->texture);
217 strb->surface = pipe->create_surface(pipe,
221 assert(strb->surface->texture);
222 assert(strb->surface->format);
223 assert(strb->surface->width == width);
224 assert(strb->surface->height == height);
227 return strb->surface != NULL;
232 * gl_renderbuffer::Delete()
235 st_renderbuffer_delete(struct gl_context *ctx, struct gl_renderbuffer *rb)
237 struct st_renderbuffer *strb = st_renderbuffer(rb);
239 struct st_context *st = st_context(ctx);
240 pipe_surface_release(st->pipe, &strb->surface);
242 pipe_resource_reference(&strb->texture, NULL);
244 _mesa_delete_renderbuffer(ctx, rb);
249 * Called via ctx->Driver.NewFramebuffer()
251 static struct gl_framebuffer *
252 st_new_framebuffer(struct gl_context *ctx, GLuint name)
254 /* XXX not sure we need to subclass gl_framebuffer for pipe */
255 return _mesa_new_framebuffer(ctx, name);
260 * Called via ctx->Driver.NewRenderbuffer()
262 static struct gl_renderbuffer *
263 st_new_renderbuffer(struct gl_context *ctx, GLuint name)
265 struct st_renderbuffer *strb = ST_CALLOC_STRUCT(st_renderbuffer);
268 _mesa_init_renderbuffer(&strb->Base, name);
269 strb->Base.Delete = st_renderbuffer_delete;
270 strb->Base.AllocStorage = st_renderbuffer_alloc_storage;
278 * Allocate a renderbuffer for a an on-screen window (not a user-created
279 * renderbuffer). The window system code determines the format.
281 struct gl_renderbuffer *
282 st_new_renderbuffer_fb(enum pipe_format format, int samples, boolean sw)
284 struct st_renderbuffer *strb;
286 strb = ST_CALLOC_STRUCT(st_renderbuffer);
288 _mesa_error(NULL, GL_OUT_OF_MEMORY, "creating renderbuffer");
292 _mesa_init_renderbuffer(&strb->Base, 0);
293 strb->Base.ClassID = 0x4242; /* just a unique value */
294 strb->Base.NumSamples = samples;
295 strb->Base.Format = st_pipe_format_to_mesa_format(format);
296 strb->Base._BaseFormat = _mesa_get_format_base_format(strb->Base.Format);
300 case PIPE_FORMAT_R8G8B8A8_UNORM:
301 case PIPE_FORMAT_B8G8R8A8_UNORM:
302 case PIPE_FORMAT_A8R8G8B8_UNORM:
303 strb->Base.InternalFormat = GL_RGBA8;
305 case PIPE_FORMAT_R8G8B8X8_UNORM:
306 case PIPE_FORMAT_B8G8R8X8_UNORM:
307 case PIPE_FORMAT_X8R8G8B8_UNORM:
308 strb->Base.InternalFormat = GL_RGB8;
310 case PIPE_FORMAT_B5G5R5A1_UNORM:
311 strb->Base.InternalFormat = GL_RGB5_A1;
313 case PIPE_FORMAT_B4G4R4A4_UNORM:
314 strb->Base.InternalFormat = GL_RGBA4;
316 case PIPE_FORMAT_B5G6R5_UNORM:
317 strb->Base.InternalFormat = GL_RGB565;
319 case PIPE_FORMAT_Z16_UNORM:
320 strb->Base.InternalFormat = GL_DEPTH_COMPONENT16;
322 case PIPE_FORMAT_Z32_UNORM:
323 strb->Base.InternalFormat = GL_DEPTH_COMPONENT32;
325 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
326 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
327 strb->Base.InternalFormat = GL_DEPTH24_STENCIL8_EXT;
329 case PIPE_FORMAT_Z24X8_UNORM:
330 case PIPE_FORMAT_X8Z24_UNORM:
331 strb->Base.InternalFormat = GL_DEPTH_COMPONENT24;
333 case PIPE_FORMAT_S8_UINT:
334 strb->Base.InternalFormat = GL_STENCIL_INDEX8_EXT;
336 case PIPE_FORMAT_R16G16B16A16_SNORM:
338 strb->Base.InternalFormat = GL_RGBA16_SNORM;
340 case PIPE_FORMAT_R16G16B16A16_UNORM:
341 strb->Base.InternalFormat = GL_RGBA16;
343 case PIPE_FORMAT_R8_UNORM:
344 strb->Base.InternalFormat = GL_R8;
346 case PIPE_FORMAT_R8G8_UNORM:
347 strb->Base.InternalFormat = GL_RG8;
349 case PIPE_FORMAT_R16_UNORM:
350 strb->Base.InternalFormat = GL_R16;
352 case PIPE_FORMAT_R16G16_UNORM:
353 strb->Base.InternalFormat = GL_RG16;
355 case PIPE_FORMAT_R32G32B32A32_FLOAT:
356 strb->Base.InternalFormat = GL_RGBA32F;
358 case PIPE_FORMAT_R16G16B16A16_FLOAT:
359 strb->Base.InternalFormat = GL_RGBA16F;
363 "Unexpected format %s in st_new_renderbuffer_fb",
364 util_format_name(format));
369 /* st-specific methods */
370 strb->Base.Delete = st_renderbuffer_delete;
371 strb->Base.AllocStorage = st_renderbuffer_alloc_storage;
373 /* surface is allocated in st_renderbuffer_alloc_storage() */
374 strb->surface = NULL;
381 * Called via ctx->Driver.BindFramebufferEXT().
384 st_bind_framebuffer(struct gl_context *ctx, GLenum target,
385 struct gl_framebuffer *fb, struct gl_framebuffer *fbread)
392 * Create or update the pipe_surface of a FBO renderbuffer.
393 * This is usually called after st_finalize_texture.
396 st_update_renderbuffer_surface(struct st_context *st,
397 struct st_renderbuffer *strb)
399 struct pipe_context *pipe = st->pipe;
400 struct pipe_resource *resource = strb->texture;
401 int rtt_width = strb->Base.Width;
402 int rtt_height = strb->Base.Height;
403 int rtt_depth = strb->Base.Depth;
404 enum pipe_format format = st->ctx->Color.sRGBEnabled ? resource->format :
405 util_format_linear(resource->format);
406 unsigned first_layer, last_layer, level;
408 if (resource->target == PIPE_TEXTURE_1D_ARRAY) {
409 rtt_depth = rtt_height;
413 /* find matching mipmap level size */
414 for (level = 0; level <= resource->last_level; level++) {
415 if (u_minify(resource->width0, level) == rtt_width &&
416 u_minify(resource->height0, level) == rtt_height &&
417 (resource->target != PIPE_TEXTURE_3D ||
418 u_minify(resource->depth0, level) == rtt_depth)) {
422 assert(level <= resource->last_level);
424 /* determine the layer bounds */
425 if (strb->rtt_layered) {
427 last_layer = util_max_layer(strb->texture, level);
431 last_layer = strb->rtt_face + strb->rtt_slice;
434 if (!strb->surface ||
435 strb->surface->texture->nr_samples != strb->Base.NumSamples ||
436 strb->surface->format != format ||
437 strb->surface->texture != resource ||
438 strb->surface->width != rtt_width ||
439 strb->surface->height != rtt_height ||
440 strb->surface->u.tex.level != level ||
441 strb->surface->u.tex.first_layer != first_layer ||
442 strb->surface->u.tex.last_layer != last_layer) {
443 /* create a new pipe_surface */
444 struct pipe_surface surf_tmpl;
445 memset(&surf_tmpl, 0, sizeof(surf_tmpl));
446 surf_tmpl.format = format;
447 surf_tmpl.u.tex.level = level;
448 surf_tmpl.u.tex.first_layer = first_layer;
449 surf_tmpl.u.tex.last_layer = last_layer;
451 pipe_surface_reference(&strb->surface, NULL);
453 strb->surface = pipe->create_surface(pipe, resource, &surf_tmpl);
458 * Called by ctx->Driver.RenderTexture
461 st_render_texture(struct gl_context *ctx,
462 struct gl_framebuffer *fb,
463 struct gl_renderbuffer_attachment *att)
465 struct st_context *st = st_context(ctx);
466 struct pipe_context *pipe = st->pipe;
467 struct gl_renderbuffer *rb = att->Renderbuffer;
468 struct st_renderbuffer *strb = st_renderbuffer(rb);
469 struct pipe_resource *pt;
471 if (!st_finalize_texture(ctx, pipe, att->Texture))
474 pt = st_get_texobj_resource(att->Texture);
477 /* point renderbuffer at texobject */
479 strb->rtt_face = att->CubeMapFace;
480 strb->rtt_slice = att->Zoffset;
481 strb->rtt_layered = att->Layered;
482 pipe_resource_reference(&strb->texture, pt);
484 pipe_surface_release(pipe, &strb->surface);
486 st_update_renderbuffer_surface(st, strb);
488 strb->Base.Format = st_pipe_format_to_mesa_format(pt->format);
490 /* Invalidate buffer state so that the pipe's framebuffer state
492 * That's where the new renderbuffer (which we just created) gets
493 * passed to the pipe as a (color/depth) render target.
495 st_invalidate_state(ctx, _NEW_BUFFERS);
498 /* Need to trigger a call to update_framebuffer() since we just
499 * attached a new renderbuffer.
501 ctx->NewState |= _NEW_BUFFERS;
506 * Called via ctx->Driver.FinishRenderTexture.
509 st_finish_render_texture(struct gl_context *ctx, struct gl_renderbuffer *rb)
511 struct st_renderbuffer *strb = st_renderbuffer(rb);
516 strb->is_rtt = FALSE;
518 /* restore previous framebuffer state */
519 st_invalidate_state(ctx, _NEW_BUFFERS);
525 st_fbo_invalid(const char *reason)
527 if (MESA_DEBUG_FLAGS & DEBUG_INCOMPLETE_FBO) {
528 _mesa_debug(NULL, "Invalid FBO: %s\n", reason);
534 * Validate a renderbuffer attachment for a particular set of bindings.
537 st_validate_attachment(struct gl_context *ctx,
538 struct pipe_screen *screen,
539 const struct gl_renderbuffer_attachment *att,
542 const struct st_texture_object *stObj = st_texture_object(att->Texture);
543 enum pipe_format format;
544 mesa_format texFormat;
547 /* Sanity check: we must be binding the surface as a (color) render target
548 * or depth/stencil target.
550 assert(bindings == PIPE_BIND_RENDER_TARGET ||
551 bindings == PIPE_BIND_DEPTH_STENCIL);
553 /* Only validate texture attachments for now, since
554 * st_renderbuffer_alloc_storage makes sure that
555 * the format is supported.
557 if (att->Type != GL_TEXTURE)
560 if (!stObj || !stObj->pt)
563 format = stObj->pt->format;
564 texFormat = att->Renderbuffer->TexImage->TexFormat;
566 /* If the encoding is sRGB and sRGB rendering cannot be enabled,
567 * check for linear format support instead.
568 * Later when we create a surface, we change the format to a linear one. */
569 if (!ctx->Extensions.EXT_framebuffer_sRGB &&
570 _mesa_get_format_color_encoding(texFormat) == GL_SRGB) {
571 const mesa_format linearFormat = _mesa_get_srgb_format_linear(texFormat);
572 format = st_mesa_format_to_pipe_format(linearFormat);
575 valid = screen->is_format_supported(screen, format,
577 stObj->pt->nr_samples, bindings);
579 st_fbo_invalid("Invalid format");
587 * Check that the framebuffer configuration is valid in terms of what
588 * the driver can support.
590 * For Gallium we only supports combined Z+stencil, not separate buffers.
593 st_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
595 struct st_context *st = st_context(ctx);
596 struct pipe_screen *screen = st->pipe->screen;
597 const struct gl_renderbuffer_attachment *depth =
598 &fb->Attachment[BUFFER_DEPTH];
599 const struct gl_renderbuffer_attachment *stencil =
600 &fb->Attachment[BUFFER_STENCIL];
602 enum pipe_format first_format = PIPE_FORMAT_NONE;
603 boolean mixed_formats =
604 screen->get_param(screen, PIPE_CAP_MIXED_COLORBUFFER_FORMATS) != 0;
606 if (depth->Type && stencil->Type && depth->Type != stencil->Type) {
607 st_fbo_invalid("Different Depth/Stencil buffer formats");
608 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
611 if (depth->Type == GL_RENDERBUFFER_EXT &&
612 stencil->Type == GL_RENDERBUFFER_EXT &&
613 depth->Renderbuffer != stencil->Renderbuffer) {
614 st_fbo_invalid("Separate Depth/Stencil buffers");
615 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
618 if (depth->Type == GL_TEXTURE &&
619 stencil->Type == GL_TEXTURE &&
620 depth->Texture != stencil->Texture) {
621 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
622 st_fbo_invalid("Different Depth/Stencil textures");
626 if (!st_validate_attachment(ctx,
629 PIPE_BIND_DEPTH_STENCIL)) {
630 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
633 if (!st_validate_attachment(ctx,
636 PIPE_BIND_DEPTH_STENCIL)) {
637 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
640 for (i = 0; i < ctx->Const.MaxColorAttachments; i++) {
641 struct gl_renderbuffer_attachment *att =
642 &fb->Attachment[BUFFER_COLOR0 + i];
643 enum pipe_format format;
645 if (!st_validate_attachment(ctx,
648 PIPE_BIND_RENDER_TARGET)) {
649 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
653 if (!mixed_formats) {
654 /* Disallow mixed formats. */
655 if (att->Type != GL_NONE) {
656 format = st_renderbuffer(att->Renderbuffer)->surface->format;
661 if (first_format == PIPE_FORMAT_NONE) {
662 first_format = format;
663 } else if (format != first_format) {
664 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
665 st_fbo_invalid("Mixed color formats");
674 * Called via glDrawBuffer.
677 st_DrawBuffers(struct gl_context *ctx, GLsizei count, const GLenum *buffers)
679 struct st_context *st = st_context(ctx);
680 struct gl_framebuffer *fb = ctx->DrawBuffer;
686 /* add the renderbuffers on demand */
687 for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
688 gl_buffer_index idx = fb->_ColorDrawBufferIndexes[i];
691 st_manager_add_color_renderbuffer(st, fb, idx);
698 * Called via glReadBuffer.
701 st_ReadBuffer(struct gl_context *ctx, GLenum buffer)
703 struct st_context *st = st_context(ctx);
704 struct gl_framebuffer *fb = ctx->ReadBuffer;
708 /* add the renderbuffer on demand */
709 if (fb->_ColorReadBufferIndex >= 0)
710 st_manager_add_color_renderbuffer(st, fb, fb->_ColorReadBufferIndex);
716 * Called via ctx->Driver.MapRenderbuffer.
719 st_MapRenderbuffer(struct gl_context *ctx,
720 struct gl_renderbuffer *rb,
721 GLuint x, GLuint y, GLuint w, GLuint h,
723 GLubyte **mapOut, GLint *rowStrideOut)
725 struct st_context *st = st_context(ctx);
726 struct st_renderbuffer *strb = st_renderbuffer(rb);
727 struct pipe_context *pipe = st->pipe;
728 const GLboolean invert = rb->Name == 0;
733 if (strb->software) {
734 /* software-allocated renderbuffer (probably an accum buffer) */
736 GLint bpp = _mesa_get_format_bytes(strb->Base.Format);
737 GLint stride = _mesa_format_row_stride(strb->Base.Format,
739 *mapOut = (GLubyte *) strb->data + y * stride + x * bpp;
740 *rowStrideOut = stride;
750 if (mode & GL_MAP_READ_BIT)
751 usage |= PIPE_TRANSFER_READ;
752 if (mode & GL_MAP_WRITE_BIT)
753 usage |= PIPE_TRANSFER_WRITE;
754 if (mode & GL_MAP_INVALIDATE_RANGE_BIT)
755 usage |= PIPE_TRANSFER_DISCARD_RANGE;
757 /* Note: y=0=bottom of buffer while y2=0=top of buffer.
758 * 'invert' will be true for window-system buffers and false for
759 * user-allocated renderbuffers and textures.
762 y2 = strb->Base.Height - y - h;
766 map = pipe_transfer_map(pipe,
768 strb->surface->u.tex.level,
769 strb->surface->u.tex.first_layer,
770 usage, x, y2, w, h, &strb->transfer);
773 *rowStrideOut = -(int) strb->transfer->stride;
774 map += (h - 1) * strb->transfer->stride;
777 *rowStrideOut = strb->transfer->stride;
789 * Called via ctx->Driver.UnmapRenderbuffer.
792 st_UnmapRenderbuffer(struct gl_context *ctx,
793 struct gl_renderbuffer *rb)
795 struct st_context *st = st_context(ctx);
796 struct st_renderbuffer *strb = st_renderbuffer(rb);
797 struct pipe_context *pipe = st->pipe;
799 if (strb->software) {
800 /* software-allocated renderbuffer (probably an accum buffer) */
804 pipe_transfer_unmap(pipe, strb->transfer);
805 strb->transfer = NULL;
810 void st_init_fbo_functions(struct dd_function_table *functions)
812 functions->NewFramebuffer = st_new_framebuffer;
813 functions->NewRenderbuffer = st_new_renderbuffer;
814 functions->BindFramebuffer = st_bind_framebuffer;
815 functions->FramebufferRenderbuffer = _mesa_framebuffer_renderbuffer;
816 functions->RenderTexture = st_render_texture;
817 functions->FinishRenderTexture = st_finish_render_texture;
818 functions->ValidateFramebuffer = st_validate_framebuffer;
820 functions->DrawBuffers = st_DrawBuffers;
821 functions->ReadBuffer = st_ReadBuffer;
823 functions->MapRenderbuffer = st_MapRenderbuffer;
824 functions->UnmapRenderbuffer = st_UnmapRenderbuffer;