texrender.c File Reference

#include "context.h"
#include "fbobject.h"
#include "texformat.h"
#include "texrender.h"
#include "renderbuffer.h"

Data Structures
struct	texture_renderbuffer
	Derived from gl_renderbuffer class. More...
Functions
static void	texture_get_row (GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count, GLint x, GLint y, void *values)
	Get row of values from the renderbuffer that wraps a texture image.
static void	texture_get_values (GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count, const GLint x[], const GLint y[], void *values)
static void	texture_put_row (GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count, GLint x, GLint y, const void *values, const GLubyte *mask)
	Put row of values into a renderbuffer that wraps a texture image.
static void	texture_put_row_rgb (GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count, GLint x, GLint y, const void *values, const GLubyte *mask)
	Put row of RGB values into a renderbuffer that wraps a texture image.
static void	texture_put_mono_row (GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count, GLint x, GLint y, const void *value, const GLubyte *mask)
static void	texture_put_values (GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count, const GLint x[], const GLint y[], const void *values, const GLubyte *mask)
static void	texture_put_mono_values (GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count, const GLint x[], const GLint y[], const void *value, const GLubyte *mask)
static void	store_nop (struct gl_texture_image *texImage, GLint col, GLint row, GLint img, const void *texel)
static void	delete_texture_wrapper (struct gl_renderbuffer *rb)
static void	wrap_texture (GLcontext *ctx, struct gl_renderbuffer_attachment *att)
	This function creates a renderbuffer object which wraps a texture image.
static void	update_wrapper (GLcontext *ctx, const struct gl_renderbuffer_attachment *att)
	Update the renderbuffer wrapper for rendering to a texture.
void	_mesa_render_texture (GLcontext *ctx, struct gl_framebuffer *fb, struct gl_renderbuffer_attachment *att)
	Called when rendering to a texture image begins, or when changing the dest mipmap level, cube face, etc.
void	_mesa_finish_render_texture (GLcontext *ctx, struct gl_renderbuffer_attachment *att)

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Function Documentation

void _mesa_finish_render_texture	(	GLcontext *	ctx,
		struct gl_renderbuffer_attachment *	att
	)

void _mesa_render_texture	(	GLcontext *	ctx,
		struct gl_framebuffer *	fb,
		struct gl_renderbuffer_attachment *	att
	)

Called when rendering to a texture image begins, or when changing the dest mipmap level, cube face, etc.

This is a fallback routine for software render-to-texture.

Called via the glRenderbufferTexture1D/2D/3D() functions and elsewhere (such as glTexImage2D).

The image we're rendering into is att->Texture->Image[att->CubeMapFace][att->TextureLevel]; It'll never be NULL.

Parameters:

	fb	the framebuffer object the texture is being bound to
	att	the fb attachment point of the texture

See also:

_mesa_framebuffer_renderbuffer

static void delete_texture_wrapper

(

struct gl_renderbuffer *

rb

)

[static]

static void store_nop	(	struct gl_texture_image *	texImage,
		GLint	col,
		GLint	row,
		GLint	img,
		const void *	texel
	)			[static]

static void texture_get_row	(	GLcontext *	ctx,
		struct gl_renderbuffer *	rb,
		GLuint	count,
		GLint	x,
		GLint	y,
		void *	values
	)			[static]

Get row of values from the renderbuffer that wraps a texture image.

static void texture_get_values	(	GLcontext *	ctx,
		struct gl_renderbuffer *	rb,
		GLuint	count,
		const GLint	x[],
		const GLint	y[],
		void *	values
	)			[static]

static void texture_put_mono_row	(	GLcontext *	ctx,
		struct gl_renderbuffer *	rb,
		GLuint	count,
		GLint	x,
		GLint	y,
		const void *	value,
		const GLubyte *	mask
	)			[static]

static void texture_put_mono_values	(	GLcontext *	ctx,
		struct gl_renderbuffer *	rb,
		GLuint	count,
		const GLint	x[],
		const GLint	y[],
		const void *	value,
		const GLubyte *	mask
	)			[static]

static void texture_put_row	(	GLcontext *	ctx,
		struct gl_renderbuffer *	rb,
		GLuint	count,
		GLint	x,
		GLint	y,
		const void *	values,
		const GLubyte *	mask
	)			[static]

Put row of values into a renderbuffer that wraps a texture image.

static void texture_put_row_rgb	(	GLcontext *	ctx,
		struct gl_renderbuffer *	rb,
		GLuint	count,
		GLint	x,
		GLint	y,
		const void *	values,
		const GLubyte *	mask
	)			[static]

Put row of RGB values into a renderbuffer that wraps a texture image.

static void texture_put_values	(	GLcontext *	ctx,
		struct gl_renderbuffer *	rb,
		GLuint	count,
		const GLint	x[],
		const GLint	y[],
		const void *	values,
		const GLubyte *	mask
	)			[static]

static void update_wrapper	(	GLcontext *	ctx,
		const struct gl_renderbuffer_attachment *	att
	)			[static]

Update the renderbuffer wrapper for rendering to a texture.

For example, update the width, height of the RB based on the texture size, update the internal format info, etc.

static void wrap_texture	(	GLcontext *	ctx,
		struct gl_renderbuffer_attachment *	att
	)			[static]

This function creates a renderbuffer object which wraps a texture image.

The new renderbuffer is plugged into the given attachment point. This allows rendering into the texture as if it were a renderbuffer.

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