2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 #include "bufferobj.h"
32 #include "framebuffer.h"
34 #include "mfeatures.h"
45 * Execute glDrawPixels
47 static void GLAPIENTRY
48 _mesa_DrawPixels( GLsizei width
, GLsizei height
,
49 GLenum format
, GLenum type
, const GLvoid
*pixels
)
51 GET_CURRENT_CONTEXT(ctx
);
52 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
54 if (MESA_VERBOSE
& VERBOSE_API
)
55 _mesa_debug(ctx
, "glDrawPixels(%d, %d, %s, %s, %p) // to %s at %d, %d\n",
57 _mesa_lookup_enum_by_nr(format
),
58 _mesa_lookup_enum_by_nr(type
),
60 _mesa_lookup_enum_by_nr(ctx
->DrawBuffer
->ColorDrawBuffer
[0]),
61 IROUND(ctx
->Current
.RasterPos
[0]),
62 IROUND(ctx
->Current
.RasterPos
[1]));
65 if (width
< 0 || height
< 0) {
66 _mesa_error( ctx
, GL_INVALID_VALUE
, "glDrawPixels(width or height < 0)" );
70 /* We're not using the current vertex program, and the driver may install
71 * its own. Note: this may dirty some state.
73 _mesa_set_vp_override(ctx
, GL_TRUE
);
75 /* Note: this call does state validation */
76 if (!_mesa_valid_to_render(ctx
, "glDrawPixels")) {
77 goto end
; /* the error code was recorded */
80 /* GL 3.0 introduced a new restriction on glDrawPixels() over what was in
81 * GL_EXT_texture_integer. From section 3.7.4 ("Rasterization of Pixel
82 * Rectangles) on page 151 of the GL 3.0 specification:
84 * "If format contains integer components, as shown in table 3.6, an
85 * INVALID OPERATION error is generated."
87 * Since DrawPixels rendering would be merely undefined if not an error (due
88 * to a lack of defined mapping from integer data to gl_Color fragment shader
89 * input), NVIDIA's implementation also just returns this error despite
90 * exposing GL_EXT_texture_integer, just return an error regardless.
92 if (_mesa_is_integer_format(format
)) {
93 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glDrawPixels(integer format)");
97 if (_mesa_error_check_format_type(ctx
, format
, type
, GL_TRUE
)) {
98 goto end
; /* the error code was recorded */
101 if (ctx
->RasterDiscard
) {
105 if (!ctx
->Current
.RasterPosValid
) {
106 goto end
; /* no-op, not an error */
109 if (ctx
->RenderMode
== GL_RENDER
) {
110 if (width
> 0 && height
> 0) {
111 /* Round, to satisfy conformance tests (matches SGI's OpenGL) */
112 GLint x
= IROUND(ctx
->Current
.RasterPos
[0]);
113 GLint y
= IROUND(ctx
->Current
.RasterPos
[1]);
115 if (_mesa_is_bufferobj(ctx
->Unpack
.BufferObj
)) {
116 /* unpack from PBO */
117 if (!_mesa_validate_pbo_access(2, &ctx
->Unpack
, width
, height
,
118 1, format
, type
, INT_MAX
, pixels
)) {
119 _mesa_error(ctx
, GL_INVALID_OPERATION
,
120 "glDrawPixels(invalid PBO access)");
123 if (_mesa_bufferobj_mapped(ctx
->Unpack
.BufferObj
)) {
124 /* buffer is mapped - that's an error */
125 _mesa_error(ctx
, GL_INVALID_OPERATION
,
126 "glDrawPixels(PBO is mapped)");
131 ctx
->Driver
.DrawPixels(ctx
, x
, y
, width
, height
, format
, type
,
132 &ctx
->Unpack
, pixels
);
135 else if (ctx
->RenderMode
== GL_FEEDBACK
) {
136 /* Feedback the current raster pos info */
137 FLUSH_CURRENT( ctx
, 0 );
138 _mesa_feedback_token( ctx
, (GLfloat
) (GLint
) GL_DRAW_PIXEL_TOKEN
);
139 _mesa_feedback_vertex( ctx
,
140 ctx
->Current
.RasterPos
,
141 ctx
->Current
.RasterColor
,
142 ctx
->Current
.RasterTexCoords
[0] );
145 ASSERT(ctx
->RenderMode
== GL_SELECT
);
146 /* Do nothing. See OpenGL Spec, Appendix B, Corollary 6. */
150 _mesa_set_vp_override(ctx
, GL_FALSE
);
154 static void GLAPIENTRY
155 _mesa_CopyPixels( GLint srcx
, GLint srcy
, GLsizei width
, GLsizei height
,
158 GET_CURRENT_CONTEXT(ctx
);
159 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
161 if (MESA_VERBOSE
& VERBOSE_API
)
163 "glCopyPixels(%d, %d, %d, %d, %s) // from %s to %s at %d, %d\n",
164 srcx
, srcy
, width
, height
,
165 _mesa_lookup_enum_by_nr(type
),
166 _mesa_lookup_enum_by_nr(ctx
->ReadBuffer
->ColorReadBuffer
),
167 _mesa_lookup_enum_by_nr(ctx
->DrawBuffer
->ColorDrawBuffer
[0]),
168 IROUND(ctx
->Current
.RasterPos
[0]),
169 IROUND(ctx
->Current
.RasterPos
[1]));
171 if (width
< 0 || height
< 0) {
172 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCopyPixels(width or height < 0)");
176 /* Note: more detailed 'type' checking is done by the
177 * _mesa_source/dest_buffer_exists() calls below. That's where we
178 * check if the stencil buffer exists, etc.
180 if (type
!= GL_COLOR
&&
182 type
!= GL_STENCIL
&&
183 type
!= GL_DEPTH_STENCIL
) {
184 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCopyPixels(type=%s)",
185 _mesa_lookup_enum_by_nr(type
));
189 /* We're not using the current vertex program, and the driver may install
190 * it's own. Note: this may dirty some state.
192 _mesa_set_vp_override(ctx
, GL_TRUE
);
194 /* Note: this call does state validation */
195 if (!_mesa_valid_to_render(ctx
, "glCopyPixels")) {
196 goto end
; /* the error code was recorded */
199 /* Check read buffer's status (draw buffer was already checked) */
200 if (ctx
->ReadBuffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
201 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
202 "glCopyPixels(incomplete framebuffer)" );
206 if (ctx
->ReadBuffer
->Name
!= 0 && ctx
->ReadBuffer
->Visual
.samples
> 0) {
207 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION
,
208 "glCopyPixels(multisample FBO)");
212 if (!_mesa_source_buffer_exists(ctx
, type
) ||
213 !_mesa_dest_buffer_exists(ctx
, type
)) {
214 _mesa_error(ctx
, GL_INVALID_OPERATION
,
215 "glCopyPixels(missing source or dest buffer)");
219 if (ctx
->RasterDiscard
) {
223 if (!ctx
->Current
.RasterPosValid
|| width
== 0 || height
== 0) {
224 goto end
; /* no-op, not an error */
227 if (ctx
->RenderMode
== GL_RENDER
) {
228 /* Round to satisfy conformance tests (matches SGI's OpenGL) */
229 if (width
> 0 && height
> 0) {
230 GLint destx
= IROUND(ctx
->Current
.RasterPos
[0]);
231 GLint desty
= IROUND(ctx
->Current
.RasterPos
[1]);
232 ctx
->Driver
.CopyPixels( ctx
, srcx
, srcy
, width
, height
, destx
, desty
,
236 else if (ctx
->RenderMode
== GL_FEEDBACK
) {
237 FLUSH_CURRENT( ctx
, 0 );
238 _mesa_feedback_token( ctx
, (GLfloat
) (GLint
) GL_COPY_PIXEL_TOKEN
);
239 _mesa_feedback_vertex( ctx
,
240 ctx
->Current
.RasterPos
,
241 ctx
->Current
.RasterColor
,
242 ctx
->Current
.RasterTexCoords
[0] );
245 ASSERT(ctx
->RenderMode
== GL_SELECT
);
246 /* Do nothing. See OpenGL Spec, Appendix B, Corollary 6. */
250 _mesa_set_vp_override(ctx
, GL_FALSE
);
254 static void GLAPIENTRY
255 _mesa_Bitmap( GLsizei width
, GLsizei height
,
256 GLfloat xorig
, GLfloat yorig
, GLfloat xmove
, GLfloat ymove
,
257 const GLubyte
*bitmap
)
259 GET_CURRENT_CONTEXT(ctx
);
260 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
262 if (width
< 0 || height
< 0) {
263 _mesa_error( ctx
, GL_INVALID_VALUE
, "glBitmap(width or height < 0)" );
267 if (!ctx
->Current
.RasterPosValid
) {
268 return; /* do nothing */
271 /* Note: this call does state validation */
272 if (!_mesa_valid_to_render(ctx
, "glBitmap")) {
273 /* the error code was recorded */
277 if (ctx
->RasterDiscard
)
280 if (ctx
->RenderMode
== GL_RENDER
) {
281 /* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */
282 if (width
> 0 && height
> 0) {
283 const GLfloat epsilon
= 0.0001F
;
284 GLint x
= IFLOOR(ctx
->Current
.RasterPos
[0] + epsilon
- xorig
);
285 GLint y
= IFLOOR(ctx
->Current
.RasterPos
[1] + epsilon
- yorig
);
287 if (_mesa_is_bufferobj(ctx
->Unpack
.BufferObj
)) {
288 /* unpack from PBO */
289 if (!_mesa_validate_pbo_access(2, &ctx
->Unpack
, width
, height
,
290 1, GL_COLOR_INDEX
, GL_BITMAP
,
291 INT_MAX
, (const GLvoid
*) bitmap
)) {
292 _mesa_error(ctx
, GL_INVALID_OPERATION
,
293 "glBitmap(invalid PBO access)");
296 if (_mesa_bufferobj_mapped(ctx
->Unpack
.BufferObj
)) {
297 /* buffer is mapped - that's an error */
298 _mesa_error(ctx
, GL_INVALID_OPERATION
,
299 "glBitmap(PBO is mapped)");
304 ctx
->Driver
.Bitmap( ctx
, x
, y
, width
, height
, &ctx
->Unpack
, bitmap
);
308 else if (ctx
->RenderMode
== GL_FEEDBACK
) {
309 FLUSH_CURRENT(ctx
, 0);
310 _mesa_feedback_token( ctx
, (GLfloat
) (GLint
) GL_BITMAP_TOKEN
);
311 _mesa_feedback_vertex( ctx
,
312 ctx
->Current
.RasterPos
,
313 ctx
->Current
.RasterColor
,
314 ctx
->Current
.RasterTexCoords
[0] );
317 ASSERT(ctx
->RenderMode
== GL_SELECT
);
318 /* Do nothing. See OpenGL Spec, Appendix B, Corollary 6. */
322 /* update raster position */
323 ctx
->Current
.RasterPos
[0] += xmove
;
324 ctx
->Current
.RasterPos
[1] += ymove
;
329 _mesa_init_drawpix_dispatch(struct _glapi_table
*disp
)
331 SET_Bitmap(disp
, _mesa_Bitmap
);
332 SET_CopyPixels(disp
, _mesa_CopyPixels
);
333 SET_DrawPixels(disp
, _mesa_DrawPixels
);
337 #endif /* FEATURE_drawpix */