pvr_poly_cxt_t Struct Reference

PVR polygon context. More...

#include <dc/pvr.h>

Data Fields
int	list_type
	Primitive list.
struct {
int   alpha
	Enable or disable alpha outside modifier. More...
int   shading
	Shading type. More...
int   fog_type
	Fog type outside modifier. More...
int   culling
	Culling mode. More...
int   color_clamp
	Color clamp enable/disable outside modifier. More...
int   clip_mode
	Clipping mode. More...
int   modifier_mode
	Modifier mode. More...
int   specular
	Offset color enable/disable outside modifier. More...
int   alpha2
	Enable/disable alpha inside modifier. More...
int   fog_type2
	Fog type inside modifier. More...
int   color_clamp2
	Color clamp enable/disable inside modifier. More...
}	gen
	General parameters.
struct {
int   src
	Source blending mode outside modifier. More...
int   dst
	Dest blending mode outside modifier. More...
int   src_enable
	Source blending enable outside modifier. More...
int   dst_enable
	Dest blending enable outside modifier. More...
int   src2
	Source blending mode inside modifier. More...
int   dst2
	Dest blending mode inside modifier. More...
int   src_enable2
	Source blending mode inside modifier. More...
int   dst_enable2
	Dest blending mode inside modifier. More...
}	blend
	Blending parameters.
struct {
int   color
	Color format in vertex. More...
int   uv
	U/V data format in vertex. More...
int   modifier
	Enable or disable modifier effect. More...
}	fmt
	Format control.
struct {
int   comparison
	Depth comparison mode. More...
int   write
	Enable or disable depth writes. More...
}	depth
	Depth comparison/write modes.
struct {
int   enable
	Enable/disable texturing. More...
int   filter
	Filtering mode. More...
int   mipmap
	Enable/disable mipmaps. More...
int   mipmap_bias
	Mipmap bias. More...
int   uv_flip
	Enable/disable U/V flipping. More...
int   uv_clamp
	Enable/disable U/V clamping. More...
int   alpha
	Enable/disable texture alpha. More...
int   env
	Texture color contribution. More...
int   width
	Texture width (requires a power of 2) More...
int   height
	Texture height (requires a power of 2) More...
int   format
	Texture format. More...
pvr_ptr_t   base
	Texture pointer. More...
}	txr
	Texturing params outside modifier.
struct {
int   enable
	Enable/disable texturing. More...
int   filter
	Filtering mode. More...
int   mipmap
	Enable/disable mipmaps. More...
int   mipmap_bias
	Mipmap bias. More...
int   uv_flip
	Enable/disable U/V flipping. More...
int   uv_clamp
	Enable/disable U/V clamping. More...
int   alpha
	Enable/disable texture alpha. More...
int   env
	Texture color contribution. More...
int   width
	Texture width (requires a power of 2) More...
int   height
	Texture height (requires a power of 2) More...
int   format
	Texture format. More...
pvr_ptr_t   base
	Texture pointer. More...
}	txr2
	Texturing params inside modifier.

Detailed Description

PVR polygon context.

You should use this more human readable format for specifying your polygon contexts, and then compile them into polygon headers when you are ready to start using them.

This has embedded structures in it for two reasons; the first reason is to make it easier for me to add new stuff later without breaking existing code. The second reason is to make it more readable and usable.

Unfortunately, it seems that Doxygen chokes up a little bit on this structure, and others like it. The documentation should still be mostly understandable though...

Field Documentation

alpha

int pvr_poly_cxt_t::alpha

Enable or disable alpha outside modifier.

Enable/disable texture alpha.

See also

Alpha Toggle

Alpha Toggle

alpha2

int pvr_poly_cxt_t::alpha2

Enable/disable alpha inside modifier.

See also

Alpha Toggle

base

pvr_ptr_t pvr_poly_cxt_t::base

Texture pointer.

[struct]

struct { ... } pvr_poly_cxt_t::blend

Blending parameters.

clip_mode

int pvr_poly_cxt_t::clip_mode

Clipping mode.

See also

Clipping Modes

color

int pvr_poly_cxt_t::color

Color format in vertex.

See also

Vertex Formats

color_clamp

int pvr_poly_cxt_t::color_clamp

Color clamp enable/disable outside modifier.

See also

Clamping Toggle

color_clamp2

int pvr_poly_cxt_t::color_clamp2

Color clamp enable/disable inside modifier.

See also

Clamping Toggle

comparison

int pvr_poly_cxt_t::comparison

Depth comparison mode.

See also

Comparison Modes

culling

int pvr_poly_cxt_t::culling

Culling mode.

See also

Culling Modes

[struct]

struct { ... } pvr_poly_cxt_t::depth

Depth comparison/write modes.

dst

int pvr_poly_cxt_t::dst

Dest blending mode outside modifier.

See also

Blending Modes

dst2

int pvr_poly_cxt_t::dst2

Dest blending mode inside modifier.

See also

Blending Modes

dst_enable

int pvr_poly_cxt_t::dst_enable

Dest blending enable outside modifier.

See also

Blending Toggle

dst_enable2

int pvr_poly_cxt_t::dst_enable2

Dest blending mode inside modifier.

See also

Blending Toggle

enable

int pvr_poly_cxt_t::enable

Enable/disable texturing.

See also

Toggle

env

int pvr_poly_cxt_t::env

Texture color contribution.

See also

Color Calculation Modes

filter

int pvr_poly_cxt_t::filter

Filtering mode.

See also

Sampling Modes

[struct]

struct { ... } pvr_poly_cxt_t::fmt

Format control.

fog_type

int pvr_poly_cxt_t::fog_type

Fog type outside modifier.

See also

Fog Modes

fog_type2

int pvr_poly_cxt_t::fog_type2

Fog type inside modifier.

See also

Fog Modes

format

int pvr_poly_cxt_t::format

Texture format.

See also

Formats

[struct]

struct { ... } pvr_poly_cxt_t::gen

General parameters.

height

int pvr_poly_cxt_t::height

Texture height (requires a power of 2)

list_type

int pvr_poly_cxt_t::list_type

Primitive list.

See also

Polygon Lists

mipmap

int pvr_poly_cxt_t::mipmap

Enable/disable mipmaps.

See also

Mipmap Toggle

mipmap_bias

int pvr_poly_cxt_t::mipmap_bias

Mipmap bias.

See also

Mipmap Bias Modes

modifier

int pvr_poly_cxt_t::modifier

Enable or disable modifier effect.

See also

Toggle

modifier_mode

int pvr_poly_cxt_t::modifier_mode

Modifier mode.

shading

int pvr_poly_cxt_t::shading

Shading type.

See also

Shading Modes

specular

int pvr_poly_cxt_t::specular

Offset color enable/disable outside modifier.

See also

Offset Toggle

src

int pvr_poly_cxt_t::src

Source blending mode outside modifier.

See also

Blending Modes

src2

int pvr_poly_cxt_t::src2

Source blending mode inside modifier.

See also

Blending Modes

src_enable

int pvr_poly_cxt_t::src_enable

Source blending enable outside modifier.

See also

Blending Toggle

src_enable2

int pvr_poly_cxt_t::src_enable2

Source blending mode inside modifier.

See also

Blending Toggle

[struct]

struct { ... } pvr_poly_cxt_t::txr

Texturing params outside modifier.

[struct]

struct { ... } pvr_poly_cxt_t::txr2

Texturing params inside modifier.

uv

int pvr_poly_cxt_t::uv

U/V data format in vertex.

See also

U/V Data Format

uv_clamp

int pvr_poly_cxt_t::uv_clamp

Enable/disable U/V clamping.

See also

U/V Clamp Mode

uv_flip

int pvr_poly_cxt_t::uv_flip

Enable/disable U/V flipping.

See also

U/V Flip Mode

width

int pvr_poly_cxt_t::width

Texture width (requires a power of 2)

write

int pvr_poly_cxt_t::write

Enable or disable depth writes.

See also

Write Toggle

---

The documentation for this struct was generated from the following file:

• kernel/arch/dreamcast/include/dc/pvr.h