1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/**************************************************************************
*
* Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portionsalloc
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "main/glheader.h"
#include "main/enums.h"
#include "main/image.h"
#include "main/mtypes.h"
#include "main/macros.h"
#include "main/bufferobj.h"
#include "main/teximage.h"
#include "main/texenv.h"
#include "main/texobj.h"
#include "main/texstate.h"
#include "main/texparam.h"
#include "main/matrix.h"
#include "main/varray.h"
#include "main/attrib.h"
#include "main/enable.h"
#include "glapi/dispatch.h"
#include "swrast/swrast.h"
#include "intel_screen.h"
#include "intel_context.h"
#include "intel_batchbuffer.h"
#include "intel_blit.h"
#include "intel_buffers.h"
#include "intel_regions.h"
#include "intel_pixel.h"
#include "intel_buffer_objects.h"
static GLboolean
intel_texture_drawpixels(GLcontext * ctx,
GLint x, GLint y,
GLsizei width, GLsizei height,
GLenum format,
GLenum type,
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels)
{
GLuint texname;
GLfloat vertices[4][4];
GLfloat texcoords[4][2];
/* We're going to mess with texturing with no regard to existing texture
* state, so if there is some set up we have to bail.
*/
if (ctx->Texture._EnabledUnits != 0)
return GL_FALSE;
/* Can't do textured DrawPixels with a fragment program, unless we were
* to generate a new program that sampled our texture and put the results
* in the fragment color before the user's program started.
*/
if (ctx->FragmentProgram.Enabled)
return GL_FALSE;
/* Don't even want to think about it */
if (format == GL_COLOR_INDEX)
return GL_FALSE;
/* We don't have a way to generate fragments with stencil values which *
* will set the resulting stencil value.
*/
if (format == GL_STENCIL_INDEX)
return GL_FALSE;
/* To do DEPTH_COMPONENT, we would need to change our setup to not draw to
* the color buffer, and sample the texture values into the fragment depth
* in a program.
*/
if (format == GL_DEPTH_COMPONENT)
return GL_FALSE;
_mesa_PushAttrib(GL_ENABLE_BIT | GL_TRANSFORM_BIT | GL_TEXTURE_BIT |
GL_CURRENT_BIT);
_mesa_PushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT);
/* XXX: pixel store stuff */
_mesa_Disable(GL_POLYGON_STIPPLE);
_mesa_ActiveTextureARB(GL_TEXTURE0_ARB);
_mesa_Enable(GL_TEXTURE_2D);
_mesa_GenTextures(1, &texname);
_mesa_BindTexture(GL_TEXTURE_2D, texname);
_mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
_mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
_mesa_TexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
/*
_mesa_TexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE);
_mesa_TexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
*/
_mesa_TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, format,
type, pixels);
_mesa_MatrixMode(GL_PROJECTION);
_mesa_PushMatrix();
_mesa_LoadIdentity();
_mesa_Ortho(0, ctx->DrawBuffer->Width, 0, ctx->DrawBuffer->Height, 1, -1);
_mesa_MatrixMode(GL_MODELVIEW);
_mesa_PushMatrix();
_mesa_LoadIdentity();
vertices[0][0] = x;
vertices[0][1] = y;
vertices[0][2] = ctx->Current.RasterPos[2];
vertices[0][3] = ctx->Current.RasterPos[3];
vertices[1][0] = x + width * ctx->Pixel.ZoomX;
vertices[1][1] = y;
vertices[1][2] = ctx->Current.RasterPos[2];
vertices[1][3] = ctx->Current.RasterPos[3];
vertices[2][0] = x + width * ctx->Pixel.ZoomX;
vertices[2][1] = y + height * ctx->Pixel.ZoomY;
vertices[2][2] = ctx->Current.RasterPos[2];
vertices[2][3] = ctx->Current.RasterPos[3];
vertices[3][0] = x;
vertices[3][1] = y + height * ctx->Pixel.ZoomY;
vertices[3][2] = ctx->Current.RasterPos[2];
vertices[3][3] = ctx->Current.RasterPos[3];
texcoords[0][0] = 0.0;
texcoords[0][1] = 0.0;
texcoords[1][0] = 1.0;
texcoords[1][1] = 0.0;
texcoords[2][0] = 1.0;
texcoords[2][1] = 1.0;
texcoords[3][0] = 0.0;
texcoords[3][1] = 1.0;
_mesa_VertexPointer(4, GL_FLOAT, 4 * sizeof(GLfloat), &vertices);
_mesa_TexCoordPointer(2, GL_FLOAT, 2 * sizeof(GLfloat), &texcoords);
_mesa_Enable(GL_VERTEX_ARRAY);
_mesa_Enable(GL_TEXTURE_COORD_ARRAY);
CALL_DrawArrays(ctx->Exec, (GL_TRIANGLE_FAN, 0, 4));
_mesa_MatrixMode(GL_PROJECTION);
_mesa_PopMatrix();
_mesa_MatrixMode(GL_MODELVIEW);
_mesa_PopMatrix();
_mesa_PopClientAttrib();
_mesa_PopAttrib();
_mesa_DeleteTextures(1, &texname);
return GL_TRUE;
}
void
intelDrawPixels(GLcontext * ctx,
GLint x, GLint y,
GLsizei width, GLsizei height,
GLenum format,
GLenum type,
const struct gl_pixelstore_attrib *unpack,
const GLvoid * pixels)
{
if (intel_texture_drawpixels(ctx, x, y, width, height, format, type,
unpack, pixels))
return;
if (INTEL_DEBUG & DEBUG_PIXEL)
_mesa_printf("%s: fallback to swrast\n", __FUNCTION__);
if (ctx->FragmentProgram._Current == ctx->FragmentProgram._TexEnvProgram) {
/*
* We don't want the i915 texenv program to be applied to DrawPixels.
* This is really just a performance optimization (mesa will other-
* wise happily run the fragment program on each pixel in the image).
*/
struct gl_fragment_program *fpSave = ctx->FragmentProgram._Current;
/* can't just set current frag prog to 0 here as on buffer resize
we'll get new state checks which will segfault. Remains a hack. */
ctx->FragmentProgram._Current = NULL;
ctx->FragmentProgram._UseTexEnvProgram = GL_FALSE;
ctx->FragmentProgram._Active = GL_FALSE;
_swrast_DrawPixels( ctx, x, y, width, height, format, type,
unpack, pixels );
ctx->FragmentProgram._Current = fpSave;
ctx->FragmentProgram._UseTexEnvProgram = GL_TRUE;
ctx->FragmentProgram._Active = GL_TRUE;
_swrast_InvalidateState(ctx, _NEW_PROGRAM);
}
else {
_swrast_DrawPixels( ctx, x, y, width, height, format, type,
unpack, pixels );
}
}
|
