r300_context.h

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

	struct r300_state_atom pvs;	/* pvs_cntl (22D0) */
	struct r300_state_atom gb_enable;	/* (4008) */
	struct r300_state_atom gb_misc;	/* Multisampling position shifts ? (4010) */
	struct r300_state_atom ga_point_s0;	/* S Texture Coordinate of Vertex 0 for Point texture stuffing (LLC) (4200) */
	struct r300_state_atom ga_triangle_stipple;	/* (4214) */
	struct r300_state_atom ps;	/* pointsize (421C) */
	struct r300_state_atom ga_point_minmax;	/* (4230) */
	struct r300_state_atom lcntl;	/* line control */
	struct r300_state_atom ga_line_stipple;	/* (4260) */
	struct r300_state_atom shade;
	struct r300_state_atom polygon_mode;
	struct r300_state_atom fogp;	/* fog parameters (4294) */
	struct r300_state_atom ga_soft_reset;	/* (429C) */
	struct r300_state_atom zbias_cntl;
	struct r300_state_atom zbs;	/* zbias (42A4) */
	struct r300_state_atom occlusion_cntl;
	struct r300_state_atom cul;	/* cull cntl (42B8) */
	struct r300_state_atom su_depth_scale;	/* (42C0) */
	struct r300_state_atom rc;	/* rs control (4300) */
	struct r300_state_atom ri;	/* rs interpolators (4310) */
	struct r300_state_atom rr;	/* rs route (4330) */
	struct r300_state_atom sc_hyperz;	/* (43A4) */
	struct r300_state_atom sc_screendoor;	/* (43E8) */
	struct r300_state_atom fp;	/* fragment program cntl + nodes (4600) */
	struct r300_state_atom fpt;	/* texi - (4620) */
	struct r300_state_atom us_out_fmt;	/* (46A4) */
	struct r300_state_atom r500fp;	/* r500 fp instructions */
	struct r300_state_atom r500fp_const;	/* r500 fp constants */
	struct r300_state_atom fpi[4];	/* fp instructions (46C0/47C0/48C0/49C0) */
	struct r300_state_atom fogs;	/* fog state (4BC0) */
	struct r300_state_atom fogc;	/* fog color (4BC8) */
	struct r300_state_atom at;	/* alpha test (4BD4) */
	struct r300_state_atom fg_depth_src;	/* (4BD8) */
	struct r300_state_atom fpp;	/* 0x4C00 and following */
	struct r300_state_atom rb3d_cctl;	/* (4E00) */
	struct r300_state_atom bld;	/* blending (4E04) */
	struct r300_state_atom cmk;	/* colormask (4E0C) */
	struct r300_state_atom blend_color;	/* constant blend color */
	struct r300_state_atom rop;	/* ropcntl */
	struct r300_state_atom cb;	/* colorbuffer (4E28) */
	struct r300_state_atom rb3d_dither_ctl;	/* (4E50) */
	struct r300_state_atom rb3d_aaresolve_ctl;	/* (4E88) */
	struct r300_state_atom rb3d_discard_src_pixel_lte_threshold;	/* (4E88) I saw it only written on RV350 hardware..  */
	struct r300_state_atom zs;	/* zstencil control (4F00) */
	struct r300_state_atom zstencil_format;
	struct r300_state_atom zb;	/* z buffer (4F20) */
	struct r300_state_atom zb_depthclearvalue;	/* (4F28) */
	struct r300_state_atom unk4F30;	/* (4F30) */
	struct r300_state_atom zb_hiz_offset;	/* (4F44) */
	struct r300_state_atom zb_hiz_pitch;	/* (4F54) */

	struct r300_state_atom vpi;	/* vp instructions */
	struct r300_state_atom vpp;	/* vp parameters */
	struct r300_state_atom vps;	/* vertex point size (?) */
	struct r300_state_atom vpucp[6];	/* vp user clip plane - 6 */
	/* 8 texture units */
	/* the state is grouped by function and not by
	   texture unit. This makes single unit updates
	   really awkward - we are much better off
	   updating the whole thing at once */
	struct {
		struct r300_state_atom filter;
		struct r300_state_atom filter_1;
		struct r300_state_atom size;
		struct r300_state_atom format;
		struct r300_state_atom pitch;
		struct r300_state_atom offset;
		struct r300_state_atom chroma_key;
		struct r300_state_atom border_color;
	} tex;
	struct r300_state_atom txe;	/* tex enable (4104) */
};

/**
 * This structure holds the command buffer while it is being constructed.
 *
 * The first batch of commands in the buffer is always the state that needs
 * to be re-emitted when the context is lost. This batch can be skipped
 * otherwise.
 */
struct r300_cmdbuf {
	int size;		/* DWORDs allocated for buffer */
	uint32_t *cmd_buf;
	int count_used;		/* DWORDs filled so far */
	int count_reemit;	/* size of re-emission batch */
};

/**
 * State cache
 */

struct r300_depthbuffer_state {
	GLfloat scale;
};

struct r300_stencilbuffer_state {
	GLboolean hw_stencil;
};

/* Vertex shader state */

/* Perhaps more if we store programs in vmem? */
/* drm_r300_cmd_header_t->vpu->count is unsigned char */
#define VSF_MAX_FRAGMENT_LENGTH (255*4)

/* Can be tested with colormat currently. */
#define VSF_MAX_FRAGMENT_TEMPS (14)

#define STATE_R300_WINDOW_DIMENSION (STATE_INTERNAL_DRIVER+0)
#define STATE_R300_TEXRECT_FACTOR (STATE_INTERNAL_DRIVER+1)

struct r300_vertex_shader_fragment {
	int length;
	union {
		GLuint d[VSF_MAX_FRAGMENT_LENGTH];
		float f[VSF_MAX_FRAGMENT_LENGTH];
		GLuint i[VSF_MAX_FRAGMENT_LENGTH];
	} body;
};

struct r300_vertex_shader_state {
	struct r300_vertex_shader_fragment program;
};

extern int hw_tcl_on;

#define COLOR_IS_RGBA
#define TAG(x) r300##x
#include "tnl_dd/t_dd_vertex.h"
#undef TAG

//#define CURRENT_VERTEX_SHADER(ctx) (ctx->VertexProgram._Current)
#define CURRENT_VERTEX_SHADER(ctx) (R300_CONTEXT(ctx)->selected_vp)

/* Should but doesnt work */
//#define CURRENT_VERTEX_SHADER(ctx) (R300_CONTEXT(ctx)->curr_vp)

/* r300_vertex_shader_state and r300_vertex_program should probably be merged together someday.
 * Keeping them them seperate for now should ensure fixed pipeline keeps functioning properly.
 */

struct r300_vertex_program_key {
	GLuint InputsRead;
	GLuint OutputsWritten;
	GLuint OutputsAdded;
};

struct r300_vertex_program {
	struct r300_vertex_program *next;
	struct r300_vertex_program_key key;
	int translated;

	struct r300_vertex_shader_fragment program;

	int pos_end;
	int num_temporaries;	/* Number of temp vars used by program */
	int wpos_idx;
	int inputs[VERT_ATTRIB_MAX];
	int outputs[VERT_RESULT_MAX];
	int native;
	int ref_count;
	int use_ref_count;
};

struct r300_vertex_program_cont {
	struct gl_vertex_program mesa_program;	/* Must be first */
	struct r300_vertex_shader_fragment params;
	struct r300_vertex_program *progs;
};

#define PFS_MAX_ALU_INST	64
#define PFS_MAX_TEX_INST	64
#define PFS_MAX_TEX_INDIRECT 4
#define PFS_NUM_TEMP_REGS	32
#define PFS_NUM_CONST_REGS	16

struct r300_pfs_compile_state;


/**
 * Stores state that influences the compilation of a fragment program.
 */
struct r300_fragment_program_external_state {
	struct {
		/**
		 * If the sampler is used as a shadow sampler,
		 * this field is:
		 *  0 - GL_LUMINANCE
		 *  1 - GL_INTENSITY
		 *  2 - GL_ALPHA
		 * depending on the depth texture mode.
		 */
		GLuint depth_texture_mode : 2;

		/**
		 * If the sampler is used as a shadow sampler,
		 * this field is (texture_compare_func - GL_NEVER).
		 * [e.g. if compare function is GL_LEQUAL, this field is 3]
		 *
		 * Otherwise, this field is 0.
		 */
		GLuint texture_compare_func : 3;
	} unit[16];
};


struct r300_fragment_program_node {
	int tex_offset; /**< first tex instruction */
	int tex_end; /**< last tex instruction, relative to tex_offset */
	int alu_offset; /**< first ALU instruction */
	int alu_end; /**< last ALU instruction, relative to alu_offset */
	int flags;
};

/**
 * Stores an R300 fragment program in its compiled-to-hardware form.
 */
struct r300_fragment_program_code {
	struct {
		int length; /**< total # of texture instructions used */
		GLuint inst[PFS_MAX_TEX_INST];
	} tex;

	struct {
		int length; /**< total # of ALU instructions used */
		struct {
			GLuint inst0;
			GLuint inst1;
			GLuint inst2;
			GLuint inst3;
		} inst[PFS_MAX_ALU_INST];
	} alu;

	struct r300_fragment_program_node node[4];
	int cur_node;
	int first_node_has_tex;

	/**
	 * Remember which program register a given hardware constant
	 * belongs to.
	 */
	struct prog_src_register constant[PFS_NUM_CONST_REGS];
	int const_nr;

	int max_temp_idx;
};

/**
 * Store everything about a fragment program that is needed
 * to render with that program.
 */
struct r300_fragment_program {
	struct gl_fragment_program mesa_program;

	GLboolean translated;
	GLboolean error;

	struct r300_fragment_program_external_state state;
	struct r300_fragment_program_code code;

	GLboolean WritesDepth;
	GLuint optimization;
};

struct r500_pfs_compile_state;

struct r500_fragment_program_external_state {
	struct {
		/**
		 * If the sampler is used as a shadow sampler,
		 * this field is:
		 *  0 - GL_LUMINANCE
		 *  1 - GL_INTENSITY
		 *  2 - GL_ALPHA
		 * depending on the depth texture mode.
		 */
		GLuint depth_texture_mode : 2;

		/**
		 * If the sampler is used as a shadow sampler,
		 * this field is (texture_compare_func - GL_NEVER).
		 * [e.g. if compare function is GL_LEQUAL, this field is 3]
		 *
		 * Otherwise, this field is 0.
		 */
		GLuint texture_compare_func : 3;
	} unit[16];
};

struct r500_fragment_program_code {
	struct {
		GLuint inst0;
		GLuint inst1;
		GLuint inst2;
		GLuint inst3;
		GLuint inst4;
		GLuint inst5;
	} inst[512];

	int inst_offset;
	int inst_end;

	/**
	 * Remember which program register a given hardware constant
	 * belongs to.
	 */
	struct prog_src_register constant[PFS_NUM_CONST_REGS];
	int const_nr;

	int max_temp_idx;
};

struct r500_fragment_program {
	struct gl_fragment_program mesa_program;

	GLcontext *ctx;
	GLboolean translated;
	GLboolean error;

	struct r500_fragment_program_external_state state;
	struct r500_fragment_program_code code;

	GLboolean writes_depth;

	GLuint optimization;
};

#define R300_MAX_AOS_ARRAYS		16

#define REG_COORDS	0
#define REG_COLOR0	1
#define REG_TEX0	2

struct r300_state {
	struct r300_depthbuffer_state depth;
	struct r300_texture_state texture;
	int sw_tcl_inputs[VERT_ATTRIB_MAX];
	struct r300_vertex_shader_state vertex_shader;
	struct r300_dma_region aos[R300_MAX_AOS_ARRAYS];
	int aos_count;

	GLuint *Elts;
	struct r300_dma_region elt_dma;

	struct r300_dma_region swtcl_dma;
	DECLARE_RENDERINPUTS(render_inputs_bitset);	/* actual render inputs that R300 was configured for.
							   They are the same as tnl->render_inputs for fixed pipeline */

	struct r300_stencilbuffer_state stencil;

};

#define R300_FALLBACK_NONE 0
#define R300_FALLBACK_TCL 1
#define R300_FALLBACK_RAST 2

/* r300_swtcl.c
 */
struct r300_swtcl_info {
   GLuint RenderIndex;

   /**
    * Size of a hardware vertex.  This is calculated when \c ::vertex_attrs is
    * installed in the Mesa state vector.
    */
   GLuint vertex_size;

   /**
    * Attributes instructing the Mesa TCL pipeline where / how to put vertex
    * data in the hardware buffer.
    */
   struct tnl_attr_map vertex_attrs[VERT_ATTRIB_MAX];

   /**
    * Number of elements of \c ::vertex_attrs that are actually used.
    */
   GLuint vertex_attr_count;

   /**
    * Cached pointer to the buffer where Mesa will store vertex data.
    */
   GLubyte *verts;

   /* Fallback rasterization functions
    */
  //   r200_point_func draw_point;
  //   r200_line_func draw_line;
  //   r200_tri_func draw_tri;

   GLuint hw_primitive;
   GLenum render_primitive;
   GLuint numverts;

   /**
    * Offset of the 4UB color data within a hardware (swtcl) vertex.
    */
   GLuint coloroffset;

   /**
    * Offset of the 3UB specular color data within a hardware (swtcl) vertex.
    */
   GLuint specoffset;

   /**
    * Should Mesa project vertex data or will the hardware do it?
    */
   GLboolean needproj;

   struct r300_dma_region indexed_verts;
};


/**
 * \brief R300 context structure.
 */
struct r300_context {
	struct radeon_context radeon;	/* parent class, must be first */

	struct r300_hw_state hw;
	struct r300_cmdbuf cmdbuf;
	struct r300_state state;
	struct gl_vertex_program *curr_vp;
	struct r300_vertex_program *selected_vp;

	/* Vertex buffers
	 */
	struct r300_dma dma;
	GLboolean save_on_next_unlock;
	GLuint NewGLState;

	/* Texture object bookkeeping
	 */
	unsigned nr_heaps;
	driTexHeap *texture_heaps[RADEON_NR_TEX_HEAPS];
	driTextureObject swapped;
	int texture_depth;
	float initialMaxAnisotropy;

	/* Clientdata textures;
	 */
	GLuint prefer_gart_client_texturing;

#ifdef USER_BUFFERS
	struct r300_memory_manager *rmm;
#endif

	GLvector4f dummy_attrib[_TNL_ATTRIB_MAX];
	GLvector4f *temp_attrib[_TNL_ATTRIB_MAX];

	GLboolean disable_lowimpact_fallback;

	DECLARE_RENDERINPUTS(tnl_index_bitset);	/* index of bits for last tnl_install_attrs */
	struct r300_swtcl_info swtcl;
};

struct r300_buffer_object {
	struct gl_buffer_object mesa_obj;
	int id;
};

#define R300_CONTEXT(ctx)		((r300ContextPtr)(ctx->DriverCtx))

extern void r300DestroyContext(__DRIcontextPrivate * driContextPriv);
extern GLboolean r300CreateContext(const __GLcontextModes * glVisual,
				   __DRIcontextPrivate * driContextPriv,
				   void *sharedContextPrivate);

extern void r300SelectVertexShader(r300ContextPtr r300);
extern void r300InitShaderFuncs(struct dd_function_table *functions);
extern int r300VertexProgUpdateParams(GLcontext * ctx,
				      struct r300_vertex_program_cont *vp,
				      float *dst);

#define RADEON_D_CAPTURE 0
#define RADEON_D_PLAYBACK 1
#define RADEON_D_PLAYBACK_RAW 2
#define RADEON_D_T 3

#endif				/* __R300_CONTEXT_H__ */