164 lines
4.4 KiB
C
164 lines
4.4 KiB
C
/**************************************************************************
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*
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* Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifndef INTEL_FBO_H
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#define INTEL_FBO_H
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#include "intel_screen.h"
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struct intel_context;
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/**
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* Intel framebuffer, derived from gl_framebuffer.
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*/
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struct intel_framebuffer
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{
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struct gl_framebuffer Base;
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struct intel_renderbuffer *color_rb[2];
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/* VBI
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*/
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GLuint vbl_waited;
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int64_t swap_ust;
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int64_t swap_missed_ust;
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GLuint swap_count;
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GLuint swap_missed_count;
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};
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/**
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* Intel renderbuffer, derived from gl_renderbuffer.
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* Note: The PairedDepth and PairedStencil fields use renderbuffer IDs,
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* not pointers because in some circumstances a deleted renderbuffer could
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* result in a dangling pointer here.
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*/
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struct intel_renderbuffer
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{
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struct gl_renderbuffer Base;
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struct intel_region *region;
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GLuint pfPitch; /* possibly paged flipped pitch */
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GLboolean RenderToTexture; /* RTT? */
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GLuint PairedDepth; /**< only used if this is a depth renderbuffer */
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GLuint PairedStencil; /**< only used if this is a stencil renderbuffer */
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GLuint vbl_pending; /**< vblank sequence number of pending flip */
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uint8_t *span_cache;
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unsigned long span_cache_offset;
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};
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/**
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* gl_renderbuffer is a base class which we subclass. The Class field
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* is used for simple run-time type checking.
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*/
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#define INTEL_RB_CLASS 0x12345678
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/**
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* Return a gl_renderbuffer ptr casted to intel_renderbuffer.
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* NULL will be returned if the rb isn't really an intel_renderbuffer.
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* This is determined by checking the ClassID.
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*/
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static INLINE struct intel_renderbuffer *
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intel_renderbuffer(struct gl_renderbuffer *rb)
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{
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struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
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if (irb && irb->Base.ClassID == INTEL_RB_CLASS) {
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/*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
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return irb;
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}
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else
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return NULL;
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}
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/**
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* Return a framebuffer's renderbuffer, named by a BUFFER_x index.
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*/
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static INLINE struct intel_renderbuffer *
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intel_get_renderbuffer(struct gl_framebuffer *fb, int attIndex)
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{
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if (attIndex >= 0)
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return intel_renderbuffer(fb->Attachment[attIndex].Renderbuffer);
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else
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return NULL;
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}
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extern void
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intel_renderbuffer_set_region(struct intel_renderbuffer *irb,
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struct intel_region *region);
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extern struct intel_renderbuffer *
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intel_create_renderbuffer(GLenum intFormat);
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extern void
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intel_fbo_init(struct intel_context *intel);
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extern void
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intel_flip_renderbuffers(struct intel_framebuffer *intel_fb);
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static INLINE struct intel_region *
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intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex)
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{
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struct intel_renderbuffer *irb = intel_get_renderbuffer(fb, attIndex);
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if (irb)
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return irb->region;
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else
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return NULL;
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}
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/**
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* Are we currently rendering into a texture?
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*/
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static INLINE GLboolean
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intel_rendering_to_texture(const GLcontext *ctx)
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{
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if (ctx->DrawBuffer->Name) {
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/* User-created FBO */
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const struct intel_renderbuffer *irb =
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intel_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
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return irb && irb->RenderToTexture;
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}
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else {
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return GL_FALSE;
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}
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}
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#endif /* INTEL_FBO_H */
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