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#ifndef _FFB_CONTEXT_H
#define _FFB_CONTEXT_H
#include "dri_util.h"
#include "drm.h"
#include "main/mtypes.h"
#include "ffb_xmesa.h"
typedef struct {
GLfloat alpha;
GLfloat red;
GLfloat green;
GLfloat blue;
} ffb_color;
#define FFB_GET_ALPHA(VTX) \
FFB_COLOR_FROM_FLOAT((VTX)->color[0].alpha)
#define FFB_GET_RED(VTX) \
FFB_COLOR_FROM_FLOAT((VTX)->color[0].red)
#define FFB_GET_GREEN(VTX) \
FFB_COLOR_FROM_FLOAT((VTX)->color[0].green)
#define FFB_GET_BLUE(VTX) \
FFB_COLOR_FROM_FLOAT((VTX)->color[0].blue)
typedef struct {
GLfloat x, y, z;
ffb_color color[2];
} ffb_vertex;
#define FFB_DELAYED_VIEWPORT_VARS \
GLfloat VP_SX = fmesa->hw_viewport[MAT_SX]; \
GLfloat VP_TX = fmesa->hw_viewport[MAT_TX]; \
GLfloat VP_SY = fmesa->hw_viewport[MAT_SY]; \
GLfloat VP_TY = fmesa->hw_viewport[MAT_TY]; \
GLfloat VP_SZ = fmesa->hw_viewport[MAT_SZ]; \
GLfloat VP_TZ = fmesa->hw_viewport[MAT_TZ]; \
(void) VP_SX; (void) VP_SY; (void) VP_SZ; \
(void) VP_TX; (void) VP_TY; (void) VP_TZ
#define FFB_GET_Z(VTX) \
FFB_Z_FROM_FLOAT(VP_SZ * (VTX)->z + VP_TZ)
#define FFB_GET_Y(VTX) \
FFB_XY_FROM_FLOAT(VP_SY * (VTX)->y + VP_TY)
#define FFB_GET_X(VTX) \
FFB_XY_FROM_FLOAT(VP_SX * (VTX)->x + VP_TX)
typedef void (*ffb_point_func)(GLcontext *, ffb_vertex *);
typedef void (*ffb_line_func)(GLcontext *, ffb_vertex *, ffb_vertex *);
typedef void (*ffb_tri_func)(GLcontext *, ffb_vertex *, ffb_vertex *,
ffb_vertex *);
typedef void (*ffb_quad_func)(GLcontext *, ffb_vertex *, ffb_vertex *,
ffb_vertex *, ffb_vertex *);
/* Immediate mode fast-path support. */
typedef struct {
GLfloat obj[4];
GLfloat normal[4];
GLfloat clip[4];
GLuint mask;
GLfloat color[4];
GLfloat win[4];
GLfloat eye[4];
} ffbTnlVertex, *ffbTnlVertexPtr;
typedef void (*ffb_interp_func)(GLfloat t,
ffbTnlVertex *O,
const ffbTnlVertex *I,
const ffbTnlVertex *J);
struct ffb_current_state {
GLfloat color[4];
GLfloat normal[4];
GLfloat specular[4];
};
struct ffb_light_state {
GLfloat base_color[3];
GLfloat base_alpha;
};
struct ffb_vertex_state {
struct ffb_current_state current;
struct ffb_light_state light;
};
struct ffb_imm_vertex {
ffbTnlVertex vertices[8];
ffbTnlVertex *v0;
ffbTnlVertex *v1;
ffbTnlVertex *v2;
ffbTnlVertex *v3;
void (*save_vertex)(GLcontext *ctx, ffbTnlVertex *v);
void (*flush_vertex)(GLcontext *ctx, ffbTnlVertex *v);
ffb_interp_func interp;
GLuint prim, format;
GLvertexformat vtxfmt;
};
typedef struct ffb_context_t {
GLcontext *glCtx;
GLframebuffer *glBuffer;
ffb_fbcPtr regs;
volatile char *sfb32;
int hw_locked;
int back_buffer; /* 0 = bufferA, 1 = bufferB */
/* Viewport matrix. */
GLfloat hw_viewport[16];
#define SUBPIXEL_X (-0.5F)
#define SUBPIXEL_Y (-0.5F + 0.125)
/* Vertices in driver format. */
ffb_vertex *verts;
/* Rasterization functions. */
ffb_point_func draw_point;
ffb_line_func draw_line;
ffb_tri_func draw_tri;
ffb_quad_func draw_quad;
GLenum raster_primitive;
GLenum render_primitive;
GLfloat backface_sign;
GLfloat depth_scale;
GLfloat ffb_2_30_fixed_scale;
GLfloat ffb_one_over_2_30_fixed_scale;
GLfloat ffb_16_16_fixed_scale;
GLfloat ffb_one_over_16_16_fixed_scale;
GLfloat ffb_ubyte_color_scale;
GLfloat ffb_zero;
/* Immediate mode state. */
struct ffb_vertex_state vtx_state;
struct ffb_imm_vertex imm;
/* Debugging knobs. */
GLboolean debugFallbacks;
/* This records state bits when a per-fragment attribute has
* been set which prevents us from rendering in hardware.
*
* As attributes change, some of these bits may clear as
* we move back within the chips capabilities. If they
* all clear, we return to full hw rendering.
*/
unsigned int bad_fragment_attrs;
#define FFB_BADATTR_FOG 0x00000001 /* Bad fog possible only when < FFB2 */
#define FFB_BADATTR_BLENDFUNC 0x00000002 /* Any non-const func based upon dst alpha */
#define FFB_BADATTR_BLENDROP 0x00000004 /* Blend enabled and LogicOP != GL_COPY */
#define FFB_BADATTR_BLENDEQN 0x00000008 /* Blend equation other than ADD */
#define FFB_BADATTR_STENCIL 0x00000010 /* Stencil enabled when < FFB2+ */
#define FFB_BADATTR_TEXTURE 0x00000020 /* Texture enabled */
#define FFB_BADATTR_SWONLY 0x00000040 /* Environment var set */
unsigned int state_dirty;
unsigned int state_fifo_ents;
#define FFB_STATE_FBC 0x00000001
#define FFB_STATE_PPC 0x00000002
#define FFB_STATE_DRAWOP 0x00000004
#define FFB_STATE_ROP 0x00000008
#define FFB_STATE_LPAT 0x00000010
#define FFB_STATE_PMASK 0x00000020
#define FFB_STATE_XPMASK 0x00000040
#define FFB_STATE_YPMASK 0x00000080
#define FFB_STATE_ZPMASK 0x00000100
#define FFB_STATE_XCLIP 0x00000200
#define FFB_STATE_CMP 0x00000400
#define FFB_STATE_MATCHAB 0x00000800
#define FFB_STATE_MAGNAB 0x00001000
#define FFB_STATE_MATCHC 0x00002000
#define FFB_STATE_MAGNC 0x00004000
#define FFB_STATE_DCUE 0x00008000
#define FFB_STATE_BLEND 0x00010000
#define FFB_STATE_CLIP 0x00020000
#define FFB_STATE_STENCIL 0x00040000
#define FFB_STATE_APAT 0x00080000
#define FFB_STATE_WID 0x00100000
#define FFB_STATE_ALL 0x001fffff
unsigned int state_all_fifo_ents;
#define FFB_MAKE_DIRTY(FMESA, STATE_MASK, FIFO_ENTS) \
do { if ((STATE_MASK) & ~((FMESA)->state_dirty)) { \
(FMESA)->state_dirty |= (STATE_MASK); \
(FMESA)->state_fifo_ents += FIFO_ENTS; \
} \
} while (0)
/* General hw reg state. */
unsigned int fbc;
unsigned int ppc;
unsigned int drawop;
unsigned int rop;
unsigned int lpat;
#define FFB_LPAT_BAD 0xffffffff
unsigned int wid;
unsigned int pmask;
unsigned int xpmask;
unsigned int ypmask;
unsigned int zpmask;
unsigned int xclip;
unsigned int cmp;
unsigned int matchab;
unsigned int magnab;
unsigned int matchc;
unsigned int magnc;
/* Depth cue unit hw reg state. */
unsigned int dcss; /* All FFB */
unsigned int dcsf; /* All FFB */
unsigned int dcsb; /* All FFB */
unsigned int dczf; /* All FFB */
unsigned int dczb; /* All FFB */
unsigned int dcss1; /* >=FFB2 only */
unsigned int dcss2; /* >=FFB2 only */
unsigned int dcss3; /* >=FFB2 only */
unsigned int dcs2; /* >=FFB2 only */
unsigned int dcs3; /* >=FFB2 only */
unsigned int dcs4; /* >=FFB2 only */
unsigned int dcd2; /* >=FFB2 only */
unsigned int dcd3; /* >=FFB2 only */
unsigned int dcd4; /* >=FFB2 only */
/* Blend unit hw reg state. */
unsigned int blendc;
unsigned int blendc1;
unsigned int blendc2;
/* ViewPort clipping hw reg state. */
unsigned int vclipmin;
unsigned int vclipmax;
unsigned int vclipzmin;
unsigned int vclipzmax;
struct {
unsigned int min;
unsigned int max;
} aux_clips[4];
/* Stencil control hw reg state. >=FFB2+ only. */
unsigned int stencil;
unsigned int stencilctl;
unsigned int consty; /* Stencil Ref */
/* Area pattern (used for polygon stipples). */
unsigned int pattern[32];
/* Fog state. */
float Znear, Zfar;
drm_context_t hHWContext;
drm_hw_lock_t *driHwLock;
int driFd;
unsigned int clear_pixel;
unsigned int clear_depth;
unsigned int clear_stencil;
unsigned int setupindex;
unsigned int setupnewinputs;
unsigned int new_gl_state;
__DRIdrawablePrivate *driDrawable;
__DRIscreenPrivate *driScreen;
ffbScreenPrivate *ffbScreen;
ffb_dri_state_t *ffb_sarea;
} ffbContextRec, *ffbContextPtr;
#define FFB_CONTEXT(ctx) ((ffbContextPtr)((ctx)->DriverCtx))
/* We want the depth values written during software rendering
* to match what the hardware is going to put there when we
* hw render.
*
* The Z buffer is 28 bits deep. Smooth shaded primitives
* specify a 2:30 signed fixed point Z value in the range 0.0
* to 1.0 inclusive.
*
* So for example, when hw rendering, the largest Z value of
* 1.0 would produce a value of 0x0fffffff in the actual Z
* buffer, which is the maximum value.
*
* Mesa's depth type is a 32-bit uint, so we use the following macro
* to convert to/from FFB hw Z values. Note we also have to clear
* out the top bits as that is where the Y (stencil) buffer is stored
* and during hw Z buffer reads it is always there. (During writes
* we tell the hw to discard those top 4 bits).
*/
#define Z_TO_MESA(VAL) ((GLuint)(((VAL) & 0x0fffffff) << (32 - 28)))
#define Z_FROM_MESA(VAL) (((GLuint)((GLdouble)(VAL))) >> (32 - 28))
#endif /* !(_FFB_CONTEXT_H) */
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