s_drawpix.c File Reference

#include "main/glheader.h"
#include "main/bufferobj.h"
#include "main/context.h"
#include "main/convolve.h"
#include "main/image.h"
#include "main/macros.h"
#include "main/imports.h"
#include "main/pixel.h"
#include "main/state.h"
#include "s_context.h"
#include "s_span.h"
#include "s_stencil.h"
#include "s_zoom.h"

Functions
static GLboolean	fast_draw_rgba_pixels (GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, const struct gl_pixelstore_attrib *userUnpack, const GLvoid *pixels)
	Try to do a fast and simple RGB(a) glDrawPixels.
static void	draw_index_pixels (GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)
static void	draw_stencil_pixels (GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)
static void	draw_depth_pixels (GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)
static void	draw_rgba_pixels (GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)
	Draw RGBA image.
static void	draw_depth_stencil_pixels (GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)
	This is a bit different from drawing GL_DEPTH_COMPONENT pixels.
void	_swrast_DrawPixels (GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)
	Execute software-based glDrawPixels.

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Function Documentation

void _swrast_DrawPixels	(	GLcontext *	ctx,
		GLint	x,
		GLint	y,
		GLsizei	width,
		GLsizei	height,
		GLenum	format,
		GLenum	type,
		const struct gl_pixelstore_attrib *	unpack,
		const GLvoid *	pixels
	)

Execute software-based glDrawPixels.

By time we get here, all error checking will have been done.

static void draw_depth_pixels	(	GLcontext *	ctx,
		GLint	x,
		GLint	y,
		GLsizei	width,
		GLsizei	height,
		GLenum	type,
		const struct gl_pixelstore_attrib *	unpack,
		const GLvoid *	pixels
	)			[static]

static void draw_depth_stencil_pixels	(	GLcontext *	ctx,
		GLint	x,
		GLint	y,
		GLsizei	width,
		GLsizei	height,
		GLenum	type,
		const struct gl_pixelstore_attrib *	unpack,
		const GLvoid *	pixels
	)			[static]

This is a bit different from drawing GL_DEPTH_COMPONENT pixels.

The only per-pixel operations that apply are depth scale/bias, stencil offset/shift, GL_DEPTH_WRITEMASK and GL_STENCIL_WRITEMASK, and pixel zoom. Also, only the depth buffer and stencil buffers are touched, not the color buffer(s).

static void draw_index_pixels	(	GLcontext *	ctx,
		GLint	x,
		GLint	y,
		GLsizei	width,
		GLsizei	height,
		GLenum	type,
		const struct gl_pixelstore_attrib *	unpack,
		const GLvoid *	pixels
	)			[static]

static void draw_rgba_pixels	(	GLcontext *	ctx,
		GLint	x,
		GLint	y,
		GLsizei	width,
		GLsizei	height,
		GLenum	format,
		GLenum	type,
		const struct gl_pixelstore_attrib *	unpack,
		const GLvoid *	pixels
	)			[static]

Draw RGBA image.

static void draw_stencil_pixels	(	GLcontext *	ctx,
		GLint	x,
		GLint	y,
		GLsizei	width,
		GLsizei	height,
		GLenum	type,
		const struct gl_pixelstore_attrib *	unpack,
		const GLvoid *	pixels
	)			[static]

static GLboolean fast_draw_rgba_pixels	(	GLcontext *	ctx,
		GLint	x,
		GLint	y,
		GLsizei	width,
		GLsizei	height,
		GLenum	format,
		GLenum	type,
		const struct gl_pixelstore_attrib *	userUnpack,
		const GLvoid *	pixels
	)			[static]

Try to do a fast and simple RGB(a) glDrawPixels.

Return: GL_TRUE if success, GL_FALSE if slow path must be used instead

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