mga driver, brought over by Jon Smirl

1 files changed, 309 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/mga/mgacontext.h b/src/mesa/drivers/dri/mga/mgacontext.h
new file mode 100644
index 00000000000..3065ea9fd1f
--- /dev/null
+++ b/src/mesa/drivers/dri/mga/mgacontext.h
@@ -0,0 +1,309 @@
+/* $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 <[email protected]>
+ */
+
+#ifndef MGALIB_INC
+#define MGALIB_INC
+
+/*#include <X11/Xlibint.h>*/
+#include "dri_util.h"
+#include "mtypes.h"
+#include "xf86drm.h"
+#include "mm.h"
+/*#include "mem.h"*/
+#include "mga_sarea.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_LOGICOP        0x8
+#define MGA_FALLBACK_RENDERMODE     0x10
+#define MGA_FALLBACK_STENCIL        0x20
+#define MGA_FALLBACK_DEPTH          0x40
+
+
+/* For mgaCtx->new_state.
+ */
+#define MGA_NEW_DEPTH   0x1
+#define MGA_NEW_ALPHA   0x2
+#define MGA_NEW_CLIP    0x8
+#define MGA_NEW_TEXTURE 0x20
+#define MGA_NEW_CULL    0x40
+#define MGA_NEW_WARP    0x80
+#define MGA_NEW_STENCIL 0x100
+#define MGA_NEW_CONTEXT 0x200
+
+/* 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 * );
+
+
+
+/* Reasons why the GL_BLEND fallback mightn't work:
+ */
+#define MGA_BLEND_ENV_COLOR 0x1
+#define MGA_BLEND_MULTITEX  0x2
+
+struct mga_texture_object_s;
+struct mga_screen_private_s;
+
+#define MGA_TEX_MAXLEVELS 5
+
+typedef struct mga_texture_object_s
+{
+   struct mga_texture_object_s *next;
+   struct mga_texture_object_s *prev;
+   struct gl_texture_object *tObj;
+   struct mga_context_t *ctx;
+   PMemBlock	MemBlock;
+   GLuint		offsets[MGA_TEX_MAXLEVELS];
+   int             lastLevel;
+   GLuint         dirty_images;
+   GLuint		totalSize;
+   int		texelBytes;
+   GLuint 	age;
+   int             bound;
+   int             heap;	/* agp or card */
+
+   mga_texture_regs_t setup;
+} mgaTextureObject_t;
+
+struct mga_context_t {
+
+   GLcontext *glCtx;
+   unsigned int lastStamp;	/* fullscreen breaks dpriv->laststamp,
+				 * need to shadow it here. */
+
+   /* Bookkeeping for texturing
+    */
+   int lastTexHeap;
+   struct mga_texture_object_s TexObjList[MGA_NR_TEX_HEAPS];
+   struct mga_texture_object_s SwappedOut;
+   struct mga_texture_object_s *CurrentTexObj[2];
+   memHeap_t *texHeap[MGA_NR_TEX_HEAPS];
+   int c_texupload;
+   int c_texusage;
+   int tex_thrash;
+
+
+   /* Map GL texture units onto hardware.
+    */
+   GLuint tmu_source[2];
+   
+   GLboolean default32BitTextures;
+
+   /* Manage fallbacks
+    */
+   GLuint Fallback;  
+
+
+   /* Temporaries for translating away float colors:
+    */
+   struct gl_client_array UbyteColor;
+   struct gl_client_array UbyteSecondaryColor;
+
+   /* Support for limited GL_BLEND fallback
+    */
+   unsigned int blend_flags;
+   unsigned int envcolor;
+
+   /* Rasterization state 
+    */
+   GLuint SetupNewInputs;
+   GLuint SetupIndex;
+   GLuint RenderIndex;
+   
+   GLuint hw_primitive;
+   GLenum raster_primitive;
+   GLenum render_primitive;
+
+   char *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        new_gl_state; 
+   GLuint        new_state; 
+   GLuint        dirty;
+
+   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;
+
+   /* 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 read_buffer;
+   int readOffset;
+   int drawX, drawY;		/* origin of drawable in draw buffer */
+   int lastX, lastY;		/* detect DSTORG bug */
+   GLuint numClipRects;		/* cliprects for the draw buffer */
+   XF86DRIClipRectPtr pClipRects;
+   XF86DRIClipRectRec draw_rect;
+   XF86DRIClipRectRec scissor_rect;
+   int scissor;
+
+   XF86DRIClipRectRec 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.
+    */
+   GLframebuffer *glBuffer;
+   drmContext hHWContext;
+   drmLock *driHwLock;
+   int driFd;
+   __DRIdrawablePrivate *driDrawable;
+   __DRIscreenPrivate *driScreen;
+   struct mga_screen_private_s *mgaScreen;
+   MGASAREAPrivPtr sarea;
+};
+
+#define MGA_CONTEXT(ctx) ((mgaContextPtr)(ctx->DriverCtx))
+
+#define MGAPACKCOLOR555(r,g,b,a) \
+  ((((r) & 0xf8) << 7) | (((g) & 0xf8) << 2) | (((b) & 0xf8) >> 3) | \
+    ((a) ? 0x8000 : 0))
+
+#define MGAPACKCOLOR565(r,g,b) \
+  ((((r) & 0xf8) << 8) | (((g) & 0xfc) << 3) | (((b) & 0xf8) >> 3))
+
+#define MGAPACKCOLOR88(l, a) \
+  (((l) << 8) | (a))
+
+#define MGAPACKCOLOR888(r,g,b) \
+  (((r) << 16) | ((g) << 8) | (b))
+
+#define MGAPACKCOLOR8888(r,g,b,a) \
+  (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
+
+#define MGAPACKCOLOR4444(r,g,b,a) \
+  ((((a) & 0xf0) << 8) | (((r) & 0xf0) << 4) | ((g) & 0xf0) | ((b) >> 4))
+
+
+#define MGA_DEBUG 0
+#ifndef MGA_DEBUG
+extern int MGA_DEBUG;
+#endif
+
+#define DEBUG_ALWAYS_SYNC	0x1
+#define DEBUG_VERBOSE_MSG	0x2
+#define DEBUG_VERBOSE_LRU	0x4
+#define DEBUG_VERBOSE_DRI	0x8
+#define DEBUG_VERBOSE_IOCTL	0x10
+#define DEBUG_VERBOSE_2D	0x20
+#define DEBUG_VERBOSE_FALLBACK	0x40
+
+static __inline__ GLuint mgaPackColor(GLuint cpp,
+				      GLubyte r, GLubyte g,
+				      GLubyte b, GLubyte a)
+{
+  switch (cpp) {
+  case 2:
+    return MGAPACKCOLOR565(r,g,b);
+  case 4:
+    return MGAPACKCOLOR8888(r,g,b,a);
+  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