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/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgacontext.h,v 1.7 2002/12/16 16:18:52 dawes Exp $*/
/*
* Copyright 2000-2001 VA Linux Systems, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
*/
#ifndef MGALIB_INC
#define MGALIB_INC
#include <stdint.h>
#include "drm.h"
#include "mga_drm.h"
#include "dri_util.h"
#include "mtypes.h"
#include "xf86drm.h"
#include "mm.h"
#include "colormac.h"
#include "texmem.h"
#include "macros.h"
#include "xmlconfig.h"
#define MGA_SET_FIELD(reg,mask,val) reg = ((reg) & (mask)) | ((val) & ~(mask))
#define MGA_FIELD(field,val) (((val) << (field ## _SHIFT)) & ~(field ## _MASK))
#define MGA_GET_FIELD(field, val) ((val & ~(field ## _MASK)) >> (field ## _SHIFT))
#define MGA_IS_G200(mmesa) (mmesa->mgaScreen->chipset == MGA_CARD_TYPE_G200)
#define MGA_IS_G400(mmesa) (mmesa->mgaScreen->chipset == MGA_CARD_TYPE_G400)
/* SoftwareFallback
* - texture env GL_BLEND -- can be fixed
* - 1D and 3D textures
* - incomplete textures
* - GL_DEPTH_FUNC == GL_NEVER not in h/w
*/
#define MGA_FALLBACK_TEXTURE 0x1
#define MGA_FALLBACK_DRAW_BUFFER 0x2
#define MGA_FALLBACK_READ_BUFFER 0x4
#define MGA_FALLBACK_BLEND 0x8
#define MGA_FALLBACK_RENDERMODE 0x10
#define MGA_FALLBACK_STENCIL 0x20
#define MGA_FALLBACK_DEPTH 0x40
#define MGA_FALLBACK_BORDER_MODE 0x80
#define MGA_FALLBACK_DISABLE 0x100
/* Use the templated vertex formats:
*/
#define TAG(x) mga##x
#include "tnl_dd/t_dd_vertex.h"
#undef TAG
typedef struct mga_context_t mgaContext;
typedef struct mga_context_t *mgaContextPtr;
typedef void (*mga_tri_func)( mgaContextPtr, mgaVertex *, mgaVertex *,
mgaVertex * );
typedef void (*mga_line_func)( mgaContextPtr, mgaVertex *, mgaVertex * );
typedef void (*mga_point_func)( mgaContextPtr, mgaVertex * );
/* Texture environment color
*/
#define RGB_ZERO(c) (((c) & 0xffffff) == 0x000000)
#define RGB_ONE(c) (((c) & 0xffffff) == 0xffffff)
#define ALPHA_ZERO(c) (((c) >> 24) == 0x00)
#define ALPHA_ONE(c) (((c) >> 24) == 0xff)
#define RGBA_EQUAL(c) ((c) == PACK_COLOR_8888( (c) & 0xff, (c) & 0xff, \
(c) & 0xff, (c) & 0xff ))
struct mga_texture_object_s;
struct mga_screen_private_s;
#define G200_TEX_MAXLEVELS 5
#define G400_TEX_MAXLEVELS 11
typedef struct mga_texture_object_s
{
driTextureObject base;
/* The G200 only has the ability to use 5 mipmap levels (including the
* base level). The G400 does not have this restriction, but it still
* only has 5 offset pointers in the hardware. The trick on the G400 is
* upto the first 4 offset pointers point to mipmap levels. The last
* offset pointer tells how large the preceeding mipmap is. This value is
* then used to determine where the remaining mipmaps are.
*
* For example, if the first offsets[0] through offsets[2] are used as
* pointers, then offset[3] will be the size of the mipmap pointed to by
* offsets[2]. So mipmap level 3 will be at (offsets[2]+offsets[3]). For
* each successive mipmap level, offsets[3] is divided by 4 and added to
* the previous address. So mipmap level 4 will be at
* (offsets[2]+offsets[3]+(offsets[3] / 4)).
*
* The last pointer is selected by setting TO_texorgoffsetsel in its
* pointer. In the previous example, offset[2] would have
* TO_texorgoffsetsel or'ed in before writing it to the hardware.
*
* In the current driver all of the mipmaps are packed together linearly
* with mipmap level 0. Therefore offsets[0] points to the base of the
* texture (and has TO_texorgoffsetsel or'ed in), and offsets[1] is the
* size of the base texture.
*
* There is a possible optimization available here. At times the driver
* may not be able to allocate a single block of memory for the complete
* texture without ejecting some other textures from memory. It may be
* possible to put some of the lower mipmap levels (i.e., the larger
* mipmaps) in memory separate from the higher levels.
*
* The implementation should be fairly obvious, but getting "right" would
* likely be non-trivial. A first allocation for the entire texture would
* be attempted with a flag that says "don't eject other textures." If
* that failed, an additional allocation would be attmpted for just the
* base map. The process would repeat with the block of lower maps. The
* tricky parts would be in detecting when some of the levels had been
* ejected from texture memory by other textures and preventing the
* 4th allocation (for all the smallest mipmap levels) from kicking out
* any of the first three.
*
* This array holds G400_TEX_MAXLEVELS pointers to remove an if-statement
* in a loop in mgaSetTexImages. Values past G200_TEX_MAXLEVELS are not
* used.
*/
GLuint offsets[G400_TEX_MAXLEVELS];
int texelBytes;
GLuint age;
drm_mga_texture_regs_t setup;
/* If one texture dimension wraps with GL_CLAMP and the other with
* GL_CLAMP_TO_EDGE, we have to fallback to software. We would also have
* to fallback for GL_CLAMP_TO_BORDER.
*/
GLboolean border_fallback;
/* Depending on multitxturing and environment color
* GL_BLEND may have to be a software fallback.
*/
GLboolean texenv_fallback;
} mgaTextureObject_t;
struct mga_hw_state {
GLuint specen;
GLuint cull;
GLuint cull_dualtex;
GLuint stencil;
GLuint stencilctl;
GLuint stencil_enable;
GLuint zmode;
GLuint rop;
GLuint alpha_func;
GLuint alpha_func_enable;
GLuint blend_func;
GLuint blend_func_enable;
GLuint alpha_sel;
};
struct mga_context_t {
GLcontext *glCtx;
unsigned int lastStamp; /* fullscreen breaks dpriv->laststamp,
* need to shadow it here. */
/* Hardware state management
*/
struct mga_hw_state hw;
/* Bookkeeping for texturing
*/
unsigned nr_heaps;
driTexHeap * texture_heaps[ MGA_NR_TEX_HEAPS ];
driTextureObject swapped;
struct mga_texture_object_s *CurrentTexObj[2];
/* Map GL texture units onto hardware.
*/
GLuint tmu_source[2];
int texture_depth;
/* Manage fallbacks
*/
GLuint Fallback;
/* Texture environment color.
*/
unsigned int envcolor[2];
GLboolean fcol_used;
GLboolean force_dualtex;
/* Rasterization state
*/
GLuint SetupNewInputs;
GLuint SetupIndex;
GLuint RenderIndex;
GLuint hw_primitive;
GLenum raster_primitive;
GLenum render_primitive;
GLubyte *verts;
GLint vertex_stride_shift;
GLuint vertex_format;
GLuint vertex_size;
/* Fallback rasterization functions
*/
mga_point_func draw_point;
mga_line_func draw_line;
mga_tri_func draw_tri;
/* Manage driver and hardware state
*/
GLuint NewGLState;
GLuint dirty;
drm_mga_context_regs_t setup;
GLuint ClearColor;
GLuint ClearDepth;
GLuint poly_stipple;
GLfloat depth_scale;
GLuint depth_clear_mask;
GLuint stencil_clear_mask;
GLuint hw_stencil;
GLuint haveHwStipple;
GLfloat hw_viewport[16];
/* Dma buffers
*/
drmBufPtr vertex_dma_buffer;
drmBufPtr iload_buffer;
/* VBI
*/
GLuint vbl_seq;
GLuint vblank_flags;
int64_t swap_ust;
int64_t swap_missed_ust;
GLuint swap_count;
GLuint swap_missed_count;
uint32_t last_frame_fence;
PFNGLXGETUSTPROC get_ust;
/* Drawable, cliprect and scissor information
*/
int dirty_cliprects; /* which sets of cliprects are uptodate? */
int draw_buffer; /* which buffer are we rendering to */
unsigned int drawOffset; /* draw buffer address in space */
int readOffset;
int drawX, drawY; /* origin of drawable in draw buffer */
int lastX, lastY; /* detect DSTORG bug */
GLuint numClipRects; /* cliprects for the draw buffer */
drm_clip_rect_t *pClipRects;
drm_clip_rect_t draw_rect;
drm_clip_rect_t scissor_rect;
int scissor;
drm_clip_rect_t tmp_boxes[2][MGA_NR_SAREA_CLIPRECTS];
/* Texture aging and DMA based aging.
*/
unsigned int texAge[MGA_NR_TEX_HEAPS];/* texture LRU age */
unsigned int dirtyAge; /* buffer age for synchronization */
GLuint primary_offset;
/* Mirrors of some DRI state.
*/
drm_context_t hHWContext;
drm_hw_lock_t *driHwLock;
int driFd;
__DRIdrawablePrivate *driDrawable;
__DRIdrawablePrivate *driReadable;
/**
* Drawable used by Mesa for software fallbacks for reading and
* writing. It is set by Mesa's \c SetBuffer callback, and will always be
* either \c mga_context_t::driDrawable or \c mga_context_t::driReadable.
*/
__DRIdrawablePrivate *mesa_drawable;
__DRIscreenPrivate *driScreen;
struct mga_screen_private_s *mgaScreen;
drm_mga_sarea_t *sarea;
/* Configuration cache
*/
driOptionCache optionCache;
};
#define MGA_CONTEXT(ctx) ((mgaContextPtr)(ctx->DriverCtx))
/* ================================================================
* Debugging:
*/
#define DO_DEBUG 1
#if DO_DEBUG
extern int MGA_DEBUG;
#else
#define MGA_DEBUG 0
#endif
#define DEBUG_VERBOSE_MSG 0x01
#define DEBUG_VERBOSE_DRI 0x02
#define DEBUG_VERBOSE_IOCTL 0x04
#define DEBUG_VERBOSE_TEXTURE 0x08
#define DEBUG_VERBOSE_FALLBACK 0x10
static __inline__ GLuint mgaPackColor(GLuint cpp,
GLubyte r, GLubyte g,
GLubyte b, GLubyte a)
{
switch (cpp) {
case 2:
return PACK_COLOR_565( r, g, b );
case 4:
return PACK_COLOR_8888( a, r, g, b );
default:
return 0;
}
}
/*
* Subpixel offsets for window coordinates:
*/
#define SUBPIXEL_X (-0.5F)
#define SUBPIXEL_Y (-0.5F + 0.125)
#define MGA_WA_TRIANGLES 0x18000000
#define MGA_WA_TRISTRIP_T0 0x02010200
#define MGA_WA_TRIFAN_T0 0x01000408
#define MGA_WA_TRISTRIP_T0T1 0x02010400
#define MGA_WA_TRIFAN_T0T1 0x01000810
#endif
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