ReactOS  0.4.13-dev-479-gec9c8fd
alphabuf.h File Reference
#include "types.h"
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Functions

void gl_alloc_alpha_buffers (GLcontext *ctx)
 
void gl_clear_alpha_buffers (GLcontext *ctx)
 
void gl_write_alpha_span (GLcontext *ctx, GLuint n, GLint x, GLint y, GLubyte alpha[], GLubyte mask[])
 
void gl_write_mono_alpha_span (GLcontext *ctx, GLuint n, GLint x, GLint y, GLubyte alpha, GLubyte mask[])
 
void gl_write_alpha_pixels (GLcontext *ctx, GLuint n, const GLint x[], const GLint y[], const GLubyte alpha[], const GLubyte mask[])
 
void gl_write_mono_alpha_pixels (GLcontext *ctx, GLuint n, const GLint x[], const GLint y[], GLubyte alpha, const GLubyte mask[])
 
void gl_read_alpha_span (GLcontext *ctx, GLuint n, GLint x, GLint y, GLubyte alpha[])
 
void gl_read_alpha_pixels (GLcontext *ctx, GLuint n, const GLint x[], const GLint y[], GLubyte alpha[], const GLubyte mask[])
 

Function Documentation

◆ gl_alloc_alpha_buffers()

void gl_alloc_alpha_buffers ( GLcontext ctx)

Definition at line 71 of file alphabuf.c.

72 {
73  GLint bytes = ctx->Buffer->Width * ctx->Buffer->Height * sizeof(GLubyte);
74 
75  if (ctx->Visual->FrontAlphaEnabled) {
76  if (ctx->Buffer->FrontAlpha) {
77  free( ctx->Buffer->FrontAlpha );
78  }
79  ctx->Buffer->FrontAlpha = (GLubyte *) malloc( bytes );
80  if (!ctx->Buffer->FrontAlpha) {
81  /* out of memory */
82  gl_error( ctx, GL_OUT_OF_MEMORY, "Couldn't allocate front alpha buffer" );
83  }
84  }
85  if (ctx->Visual->BackAlphaEnabled) {
86  if (ctx->Buffer->BackAlpha) {
87  free( ctx->Buffer->BackAlpha );
88  }
89  ctx->Buffer->BackAlpha = (GLubyte *) malloc( bytes );
90  if (!ctx->Buffer->BackAlpha) {
91  /* out of memory */
92  gl_error( ctx, GL_OUT_OF_MEMORY, "Couldn't allocate back alpha buffer" );
93  }
94  }
95  if (ctx->Color.DrawBuffer==GL_FRONT) {
96  ctx->Buffer->Alpha = ctx->Buffer->FrontAlpha;
97  }
98  if (ctx->Color.DrawBuffer==GL_BACK) {
99  ctx->Buffer->Alpha = ctx->Buffer->BackAlpha;
100  }
101 }
GLboolean BackAlphaEnabled
Definition: types.h:1166
#define GL_BACK
Definition: gl.h:271
GLboolean FrontAlphaEnabled
Definition: types.h:1165
GLframebuffer * Buffer
Definition: types.h:1273
unsigned char GLubyte
Definition: gl.h:157
#define free
Definition: debug_ros.c:5
GLvisual * Visual
Definition: types.h:1272
GLint Height
Definition: types.h:1179
static unsigned char bytes[4]
Definition: adnsresfilter.c:74
#define GL_FRONT
Definition: gl.h:270
struct gl_colorbuffer_attrib Color
Definition: types.h:1319
GLubyte * Alpha
Definition: types.h:1192
void gl_error(GLcontext *ctx, GLenum error, const char *s)
Definition: context.c:1421
GLubyte * BackAlpha
Definition: types.h:1191
GLint Width
Definition: types.h:1178
#define GL_OUT_OF_MEMORY
Definition: gl.h:699
int GLint
Definition: gl.h:156
#define malloc
Definition: debug_ros.c:4
GLubyte * FrontAlpha
Definition: types.h:1190

Referenced by gl_ResizeBuffersMESA().

◆ gl_clear_alpha_buffers()

void gl_clear_alpha_buffers ( GLcontext ctx)

Definition at line 108 of file alphabuf.c.

109 {
110  GLint buffer;
111 
112  /* Loop over front and back buffers */
113  for (buffer=0;buffer<2;buffer++) {
114 
115  /* Get pointer to front or back buffer */
116  GLubyte *abuffer = NULL;
117  if (buffer==0
118  && ( ctx->Color.DrawBuffer==GL_FRONT
119  || ctx->Color.DrawBuffer==GL_FRONT_AND_BACK)
120  && ctx->Visual->FrontAlphaEnabled && ctx->Buffer->FrontAlpha) {
121  abuffer = ctx->Buffer->FrontAlpha;
122  }
123  else if (buffer==1
124  && ( ctx->Color.DrawBuffer==GL_BACK
125  || ctx->Color.DrawBuffer==GL_FRONT_AND_BACK)
126  && ctx->Visual->BackAlphaEnabled && ctx->Buffer->BackAlpha) {
127  abuffer = ctx->Buffer->BackAlpha;
128  }
129 
130  /* Clear the alpha buffer */
131  if (abuffer) {
132  GLubyte aclear = (GLint) (ctx->Color.ClearColor[3]
133  * ctx->Visual->AlphaScale);
134  if (ctx->Scissor.Enabled) {
135  /* clear scissor region */
136  GLint i, j;
137  for (j=0;j<ctx->Scissor.Height;j++) {
138  GLubyte *aptr = ALPHA_ADDR(ctx->Buffer->Xmin,
139  ctx->Buffer->Ymin+j);
140  for (i=0;i<ctx->Scissor.Width;i++) {
141  *aptr++ = aclear;
142  }
143  }
144  }
145  else {
146  /* clear whole buffer */
147  MEMSET( abuffer, aclear, ctx->Buffer->Width*ctx->Buffer->Height );
148  }
149  }
150  }
151 }
GLboolean BackAlphaEnabled
Definition: types.h:1166
#define GL_BACK
Definition: gl.h:271
GLboolean FrontAlphaEnabled
Definition: types.h:1165
#define MEMSET(DST, VAL, N)
Definition: macros.h:241
GLframebuffer * Buffer
Definition: types.h:1273
unsigned char GLubyte
Definition: gl.h:157
GLint Ymin
Definition: types.h:1195
GLuint buffer
Definition: glext.h:5915
GLvisual * Visual
Definition: types.h:1272
GLint Height
Definition: types.h:1179
#define GL_FRONT_AND_BACK
Definition: gl.h:336
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
#define GL_FRONT
Definition: gl.h:270
smooth NULL
Definition: ftsmooth.c:416
GLfloat AlphaScale
Definition: types.h:1143
GLint Xmin
Definition: types.h:1195
struct gl_colorbuffer_attrib Color
Definition: types.h:1319
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint GLint GLint j
Definition: glfuncs.h:250
struct gl_scissor_attrib Scissor
Definition: types.h:1332
#define ALPHA_ADDR(X, Y)
Definition: alphabuf.c:64
GLubyte * BackAlpha
Definition: types.h:1191
GLint Width
Definition: types.h:1178
int GLint
Definition: gl.h:156
GLubyte * FrontAlpha
Definition: types.h:1190

Referenced by clear_color_buffers().

◆ gl_read_alpha_pixels()

void gl_read_alpha_pixels ( GLcontext ctx,
GLuint  n,
const GLint  x[],
const GLint  y[],
GLubyte  alpha[],
const GLubyte  mask[] 
)

Definition at line 257 of file alphabuf.c.

260 {
261  GLuint i;
262  for (i=0;i<n;i++) {
263  if (mask[i]) {
264  GLubyte *aptr = ALPHA_ADDR( x[i], y[i] );
265  alpha[i] = *aptr;
266  }
267  }
268 }
unsigned char GLubyte
Definition: gl.h:157
GLdouble n
Definition: glext.h:7729
GLint GLint GLint GLint GLint x
Definition: gl.h:1548
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
GLenum GLint GLuint mask
Definition: glext.h:6028
#define ALPHA_ADDR(X, Y)
Definition: alphabuf.c:64
unsigned int GLuint
Definition: gl.h:159
GLint GLint GLint GLint GLint GLint y
Definition: gl.h:1548
GLclampf GLclampf GLclampf alpha
Definition: gl.h:1740

Referenced by gl_blend_pixels(), gl_logicop_rgba_pixels(), and gl_mask_color_pixels().

◆ gl_read_alpha_span()

void gl_read_alpha_span ( GLcontext ctx,
GLuint  n,
GLint  x,
GLint  y,
GLubyte  alpha[] 
)

Definition at line 246 of file alphabuf.c.

248 {
249  GLubyte *aptr = ALPHA_ADDR( x, y );
250  GLuint i;
251  for (i=0;i<n;i++) {
252  alpha[i] = *aptr++;
253  }
254 }
unsigned char GLubyte
Definition: gl.h:157
GLdouble n
Definition: glext.h:7729
GLint GLint GLint GLint GLint x
Definition: gl.h:1548
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
#define ALPHA_ADDR(X, Y)
Definition: alphabuf.c:64
unsigned int GLuint
Definition: gl.h:159
GLint GLint GLint GLint GLint GLint y
Definition: gl.h:1548
GLclampf GLclampf GLclampf alpha
Definition: gl.h:1740

Referenced by gl_read_color_span(), and read_color_pixels().

◆ gl_write_alpha_pixels()

void gl_write_alpha_pixels ( GLcontext ctx,
GLuint  n,
const GLint  x[],
const GLint  y[],
const GLubyte  alpha[],
const GLubyte  mask[] 
)

Definition at line 199 of file alphabuf.c.

202 {
203  GLuint i;
204 
205  if (mask) {
206  for (i=0;i<n;i++) {
207  if (mask[i]) {
208  GLubyte *aptr = ALPHA_ADDR( x[i], y[i] );
209  *aptr = alpha[i];
210  }
211  }
212  }
213  else {
214  for (i=0;i<n;i++) {
215  GLubyte *aptr = ALPHA_ADDR( x[i], y[i] );
216  *aptr = alpha[i];
217  }
218  }
219 }
unsigned char GLubyte
Definition: gl.h:157
GLdouble n
Definition: glext.h:7729
GLint GLint GLint GLint GLint x
Definition: gl.h:1548
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
GLenum GLint GLuint mask
Definition: glext.h:6028
#define ALPHA_ADDR(X, Y)
Definition: alphabuf.c:64
unsigned int GLuint
Definition: gl.h:159
GLint GLint GLint GLint GLint GLint y
Definition: gl.h:1548
GLclampf GLclampf GLclampf alpha
Definition: gl.h:1740

Referenced by gl_flush_pb().

◆ gl_write_alpha_span()

void gl_write_alpha_span ( GLcontext ctx,
GLuint  n,
GLint  x,
GLint  y,
GLubyte  alpha[],
GLubyte  mask[] 
)

Definition at line 155 of file alphabuf.c.

157 {
158  GLubyte *aptr = ALPHA_ADDR( x, y );
159  GLuint i;
160 
161  if (mask) {
162  for (i=0;i<n;i++) {
163  if (mask[i]) {
164  *aptr = alpha[i];
165  }
166  aptr++;
167  }
168  }
169  else {
170  for (i=0;i<n;i++) {
171  *aptr++ = alpha[i];
172  }
173  }
174 }
unsigned char GLubyte
Definition: gl.h:157
GLdouble n
Definition: glext.h:7729
GLint GLint GLint GLint GLint x
Definition: gl.h:1548
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
GLenum GLint GLuint mask
Definition: glext.h:6028
#define ALPHA_ADDR(X, Y)
Definition: alphabuf.c:64
unsigned int GLuint
Definition: gl.h:159
GLint GLint GLint GLint GLint GLint y
Definition: gl.h:1548
GLclampf GLclampf GLclampf alpha
Definition: gl.h:1740

Referenced by clear_color_buffer_with_masking(), gl_write_color_span(), gl_write_monocolor_span(), and gl_write_texture_span().

◆ gl_write_mono_alpha_pixels()

void gl_write_mono_alpha_pixels ( GLcontext ctx,
GLuint  n,
const GLint  x[],
const GLint  y[],
GLubyte  alpha,
const GLubyte  mask[] 
)

Definition at line 222 of file alphabuf.c.

225 {
226  GLuint i;
227 
228  if (mask) {
229  for (i=0;i<n;i++) {
230  if (mask[i]) {
231  GLubyte *aptr = ALPHA_ADDR( x[i], y[i] );
232  *aptr = alpha;
233  }
234  }
235  }
236  else {
237  for (i=0;i<n;i++) {
238  GLubyte *aptr = ALPHA_ADDR( x[i], y[i] );
239  *aptr = alpha;
240  }
241  }
242 }
unsigned char GLubyte
Definition: gl.h:157
GLdouble n
Definition: glext.h:7729
GLint GLint GLint GLint GLint x
Definition: gl.h:1548
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
GLenum GLint GLuint mask
Definition: glext.h:6028
#define ALPHA_ADDR(X, Y)
Definition: alphabuf.c:64
unsigned int GLuint
Definition: gl.h:159
GLint GLint GLint GLint GLint GLint y
Definition: gl.h:1548
GLclampf GLclampf GLclampf alpha
Definition: gl.h:1740

Referenced by gl_flush_pb().

◆ gl_write_mono_alpha_span()

void gl_write_mono_alpha_span ( GLcontext ctx,
GLuint  n,
GLint  x,
GLint  y,
GLubyte  alpha,
GLubyte  mask[] 
)

Definition at line 177 of file alphabuf.c.

179 {
180  GLubyte *aptr = ALPHA_ADDR( x, y );
181  GLuint i;
182 
183  if (mask) {
184  for (i=0;i<n;i++) {
185  if (mask[i]) {
186  *aptr = alpha;
187  }
188  aptr++;
189  }
190  }
191  else {
192  for (i=0;i<n;i++) {
193  *aptr++ = alpha;
194  }
195  }
196 }
unsigned char GLubyte
Definition: gl.h:157
GLdouble n
Definition: glext.h:7729
GLint GLint GLint GLint GLint x
Definition: gl.h:1548
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
GLenum GLint GLuint mask
Definition: glext.h:6028
#define ALPHA_ADDR(X, Y)
Definition: alphabuf.c:64
unsigned int GLuint
Definition: gl.h:159
GLint GLint GLint GLint GLint GLint y
Definition: gl.h:1548
GLclampf GLclampf GLclampf alpha
Definition: gl.h:1740

Referenced by gl_write_monocolor_span().