1 /* $XFree86: xc/lib/GL/glx/renderpix.c,v 1.5 2003/09/28 20:15:04 alanh Exp $ */
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27 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
28 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
29 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
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62 #include "packrender.h"
66 * Send a large image to the server. If necessary, a buffer is allocated
67 * to hold the unpacked data that is copied from the clients memory.
69 * \param gc Current GLX context
70 * \param compsize Size, in bytes, of the image portion
71 * \param dim Number of dimensions of the image
72 * \param width Width of the image
73 * \param height Height of the image, must be 1 for 1D images
74 * \param depth Depth of the image, must be 1 for 1D or 2D images
75 * \param format Format of the image
76 * \param type Data type of the image
77 * \param src Pointer to the image data
78 * \param pc Pointer to end of the command header
79 * \param modes Pointer to the pixel unpack data
82 * Modify this function so that \c NULL images are sent using
83 * \c __glXSendLargeChunk instead of __glXSendLargeCommand. Doing this
84 * will eliminate the need to allocate a buffer for that case.
87 * The \c fastImageUnpack path, which is thankfully never used, is completely
91 __glXSendLargeImage(__GLXcontext
*gc
, GLint compsize
, GLint dim
,
92 GLint width
, GLint height
, GLint depth
,
93 GLenum format
, GLenum type
, const GLvoid
*src
,
94 GLubyte
*pc
, GLubyte
*modes
)
96 if ( !gc
->fastImageUnpack
|| (src
== NULL
) ) {
97 /* Allocate a temporary holding buffer */
98 GLubyte
*buf
= (GLubyte
*) Xmalloc(compsize
);
100 __glXSetError(gc
, GL_OUT_OF_MEMORY
);
104 /* Apply pixel store unpack modes to copy data into buf */
106 (*gc
->fillImage
)(gc
, dim
, width
, height
, depth
, format
, type
,
111 (void) memcpy( modes
, __glXDefaultPixelStore
+ 4, 20 );
114 (void) memcpy( modes
, __glXDefaultPixelStore
+ 0, 36 );
118 /* Send large command */
119 __glXSendLargeCommand(gc
, gc
->pc
, pc
- gc
->pc
, buf
, compsize
);
124 /* Just send the data straight as is */
125 __glXSendLargeCommand(gc
, gc
->pc
, pc
- gc
->pc
, pc
, compsize
);
129 /************************************************************************/
132 * Implement GLX protocol for \c glSeparableFilter2D.
135 * The \c fastImageUnpack path, which is thankfully never used, is completely
138 void __indirect_glSeparableFilter2D(GLenum target
, GLenum internalformat
,
139 GLsizei width
, GLsizei height
, GLenum format
,
140 GLenum type
, const GLvoid
*row
,
141 const GLvoid
*column
)
143 __GLX_DECLARE_VARIABLES();
144 GLuint compsize2
, hdrlen
, totalhdrlen
, image1len
, image2len
;
146 __GLX_LOAD_VARIABLES();
147 compsize
= __glImageSize(width
, 1, 1, format
, type
, 0);
148 compsize2
= __glImageSize(height
, 1, 1, format
, type
, 0);
149 totalhdrlen
= __GLX_PAD(__GLX_CONV_FILT_CMD_HDR_SIZE
);
150 hdrlen
= __GLX_PAD(__GLX_CONV_FILT_HDR_SIZE
);
151 image1len
= __GLX_PAD(compsize
);
152 image2len
= __GLX_PAD(compsize2
);
153 cmdlen
= totalhdrlen
+ image1len
+ image2len
;
154 if (!gc
->currentDpy
) return;
156 if (cmdlen
<= gc
->maxSmallRenderCommandSize
) {
157 /* Use GLXRender protocol to send small command */
158 __GLX_BEGIN_VARIABLE_WITH_PIXEL(X_GLrop_SeparableFilter2D
, cmdlen
);
159 __GLX_PUT_LONG(0,target
);
160 __GLX_PUT_LONG(4,internalformat
);
161 __GLX_PUT_LONG(8,width
);
162 __GLX_PUT_LONG(12,height
);
163 __GLX_PUT_LONG(16,format
);
164 __GLX_PUT_LONG(20,type
);
167 (*gc
->fillImage
)(gc
, 1, width
, 1, 1, format
, type
,
168 row
, pc
, pixelHeaderPC
);
172 (*gc
->fillImage
)(gc
, 1, height
, 1, 1, format
, type
,
176 if ((compsize
== 0) && (compsize2
== 0)) {
177 /* Setup default store modes */
178 (void) memcpy( pixelHeaderPC
, __glXDefaultPixelStore
+ 4, 20 );
182 const GLint bufsize
= image1len
+ image2len
;
184 /* Use GLXRenderLarge protocol to send command */
185 __GLX_BEGIN_VARIABLE_LARGE_WITH_PIXEL(X_GLrop_SeparableFilter2D
,cmdlen
+4);
186 __GLX_PUT_LONG(0,target
);
187 __GLX_PUT_LONG(4,internalformat
);
188 __GLX_PUT_LONG(8,width
);
189 __GLX_PUT_LONG(12,height
);
190 __GLX_PUT_LONG(16,format
);
191 __GLX_PUT_LONG(20,type
);
194 if (!gc
->fastImageUnpack
) {
195 /* Allocate a temporary holding buffer */
196 GLubyte
*buf
= (GLubyte
*) Xmalloc(bufsize
);
198 __glXSetError(gc
, GL_OUT_OF_MEMORY
);
201 (*gc
->fillImage
)(gc
, 1, width
, 1, 1, format
, type
, row
, buf
, pixelHeaderPC
);
203 (*gc
->fillImage
)(gc
, 1, height
, 1, 1, format
, type
, column
,
204 buf
+ image1len
, pixelHeaderPC
);
206 /* Send large command */
207 __glXSendLargeCommand(gc
, gc
->pc
, (GLint
)(pc
- gc
->pc
), buf
, bufsize
);
211 /* Just send the data straight as is */
212 __glXSendLargeCommand(gc
, gc
->pc
, (GLint
)(pc
- gc
->pc
), pc
, bufsize
);