Gallium3D: mesa/state_tracker/st_cb

static void get_preferred_read_format_type	(	GLcontext *	ctx,
		GLint *	format,
		GLint *	type
	)			`[static]`

glGet functions

Author:: Brian Paul Examine the current color read buffer format to determine which GL pixel format/type combo is the best match.

Definition at line 50 of file st_cb_get.c.

References st_renderbuffer::format, PIPE_FORMAT_A8R8G8B8_UNORM, and st_renderbuffer().

00051 {
00052    struct gl_framebuffer *fb = ctx->ReadBuffer;
00053    struct st_renderbuffer *strb = st_renderbuffer(fb->_ColorReadBuffer);
00054 
00055    /* defaults */
00056    *format = ctx->Const.ColorReadFormat;
00057    *type = ctx->Const.ColorReadType;
00058 
00059    if (strb) {
00060       /* XXX could add more cases here... */
00061       if (strb->format == PIPE_FORMAT_A8R8G8B8_UNORM) {
00062          *format = GL_BGRA;
00063          if (_mesa_little_endian())
00064             *type = GL_UNSIGNED_INT_8_8_8_8_REV;
00065          else
00066             *type = GL_UNSIGNED_INT_8_8_8_8;
00067       }
00068    }
00069 }

static GLboolean st_GetIntegerv	(	GLcontext *	ctx,
		GLenum	pname,
		GLint *	params
	)			`[static]`

We only intercept the OES preferred ReadPixels format/type.

Everything else goes to the default _mesa_GetIntegerv.

Definition at line 77 of file st_cb_get.c.

References get_preferred_read_format_type().

00078 {
00079    GLint dummy;
00080 
00081    switch (pname) {
00082    case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
00083       get_preferred_read_format_type(ctx, &dummy, params);
00084       return GL_TRUE;
00085    case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
00086       get_preferred_read_format_type(ctx, params, &dummy);
00087       return GL_TRUE;
00088    default:
00089       return GL_FALSE;
00090    }
00091 }

void st_init_get_functions ( struct dd_function_table * functions )

Definition at line 94 of file st_cb_get.c.

References st_GetIntegerv().

00095 {
00096    functions->GetIntegerv = st_GetIntegerv;
00097 }

st_cb_get.c File Reference

Functions

Function Documentation


Functions
static void	get_preferred_read_format_type (GLcontext ctx, GLint format, GLint *type)
	glGet functions
static GLboolean	st_GetIntegerv (GLcontext ctx, GLenum pname, GLint params)
	We only intercept the OES preferred ReadPixels format/type.
void	st_init_get_functions (struct dd_function_table *functions)