-/* $Id: osmesa.c,v 1.85 2002/06/30 16:07:18 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 4.1
+ * Version: 6.5.3
*
- * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2007 Brian Paul 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"),
*/
-#include "glheader.h"
+#include "main/glheader.h"
#include "GL/osmesa.h"
-#include "buffers.h"
-#include "context.h"
-#include "colormac.h"
-#include "depth.h"
-#include "extensions.h"
-#include "imports.h"
-#include "macros.h"
-#include "matrix.h"
-#include "mem.h"
-#include "mmath.h"
-#include "mtypes.h"
-#include "texformat.h"
-#include "texstore.h"
-#include "array_cache/acache.h"
+#include "main/context.h"
+#include "main/extensions.h"
+#include "main/framebuffer.h"
+#include "main/imports.h"
+#include "main/mtypes.h"
+#include "main/renderbuffer.h"
#include "swrast/swrast.h"
#include "swrast_setup/swrast_setup.h"
#include "swrast/s_context.h"
-#include "swrast/s_depth.h"
#include "swrast/s_lines.h"
#include "swrast/s_triangle.h"
#include "tnl/tnl.h"
#include "tnl/t_context.h"
#include "tnl/t_pipeline.h"
+#include "drivers/common/driverfuncs.h"
+#include "vbo/vbo.h"
-/*
- * This is the OS/Mesa context struct.
- * Notice how it includes a GLcontext. By doing this we're mimicking
- * C++ inheritance/derivation.
- * Later, we can cast a GLcontext pointer into an OSMesaContext pointer
- * or vice versa.
+/**
+ * OSMesa rendering context, derived from core Mesa GLcontext.
*/
-struct osmesa_context {
- GLcontext gl_ctx; /* The core GL/Mesa context */
- GLvisual *gl_visual; /* Describes the buffers */
- GLframebuffer *gl_buffer; /* Depth, stencil, accum, etc buffers */
- GLenum format; /* either GL_RGBA or GL_COLOR_INDEX */
- void *buffer; /* the image buffer */
- GLint width, height; /* size of image buffer */
- GLint rowlength; /* number of pixels per row */
- GLint userRowLength; /* user-specified number of pixels per row */
- GLint rshift, gshift; /* bit shifts for RGBA formats */
- GLint bshift, ashift;
- GLint rInd, gInd, bInd, aInd;/* index offsets for RGBA formats */
- GLchan *rowaddr[MAX_HEIGHT]; /* address of first pixel in each image row */
- GLboolean yup; /* TRUE -> Y increases upward */
- /* FALSE -> Y increases downward */
+struct osmesa_context
+{
+ GLcontext mesa; /*< Base class - this must be first */
+ GLvisual *gl_visual; /*< Describes the buffers */
+ struct gl_renderbuffer *rb; /*< The user's colorbuffer */
+ GLframebuffer *gl_buffer; /*< The framebuffer, containing user's rb */
+ GLenum format; /*< User-specified context format */
+ GLint userRowLength; /*< user-specified number of pixels per row */
+ GLint rInd, gInd, bInd, aInd;/*< index offsets for RGBA formats */
+ GLvoid *rowaddr[MAX_HEIGHT]; /*< address of first pixel in each image row */
+ GLboolean yup; /*< TRUE -> Y increases upward */
+ /*< FALSE -> Y increases downward */
};
+static INLINE OSMesaContext
+OSMESA_CONTEXT(GLcontext *ctx)
+{
+ /* Just cast, since we're using structure containment */
+ return (OSMesaContext) ctx;
+}
+
+
+/**********************************************************************/
+/*** Private Device Driver Functions ***/
+/**********************************************************************/
-/* A forward declaration: */
-static void osmesa_update_state( GLcontext *ctx, GLuint newstate );
-static void osmesa_register_swrast_functions( GLcontext *ctx );
+static const GLubyte *
+get_string( GLcontext *ctx, GLenum name )
+{
+ (void) ctx;
+ switch (name) {
+ case GL_RENDERER:
+#if CHAN_BITS == 32
+ return (const GLubyte *) "Mesa OffScreen32";
+#elif CHAN_BITS == 16
+ return (const GLubyte *) "Mesa OffScreen16";
+#else
+ return (const GLubyte *) "Mesa OffScreen";
+#endif
+ default:
+ return NULL;
+ }
+}
-#define OSMESA_CONTEXT(ctx) ((OSMesaContext) (ctx->DriverCtx))
+static void
+osmesa_update_state( GLcontext *ctx, GLuint new_state )
+{
+ /* easy - just propogate */
+ _swrast_InvalidateState( ctx, new_state );
+ _swsetup_InvalidateState( ctx, new_state );
+ _tnl_InvalidateState( ctx, new_state );
+ _vbo_InvalidateState( ctx, new_state );
+}
/**********************************************************************/
-/***** Public Functions *****/
+/***** Read/write spans/arrays of pixels *****/
/**********************************************************************/
+/* 8-bit RGBA */
+#define NAME(PREFIX) PREFIX##_RGBA8
+#define RB_TYPE GLubyte
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLubyte *P = (GLubyte *) osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 4
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[0] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[2] = VALUE[BCOMP]; \
+ DST[3] = VALUE[ACOMP]
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[0] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[2] = VALUE[BCOMP]; \
+ DST[3] = 255
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[0]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[2]; \
+ DST[ACOMP] = SRC[3]
+#include "swrast/s_spantemp.h"
+
+/* 16-bit RGBA */
+#define NAME(PREFIX) PREFIX##_RGBA16
+#define RB_TYPE GLushort
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLushort *P = (GLushort *) osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 4
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[0] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[2] = VALUE[BCOMP]; \
+ DST[3] = VALUE[ACOMP]
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[0] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[2] = VALUE[BCOMP]; \
+ DST[3] = 65535
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[0]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[2]; \
+ DST[ACOMP] = SRC[3]
+#include "swrast/s_spantemp.h"
+
+/* 32-bit RGBA */
+#define NAME(PREFIX) PREFIX##_RGBA32
+#define RB_TYPE GLfloat
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLfloat *P = (GLfloat *) osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 4
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[0] = MAX2((VALUE[RCOMP]), 0.0F); \
+ DST[1] = MAX2((VALUE[GCOMP]), 0.0F); \
+ DST[2] = MAX2((VALUE[BCOMP]), 0.0F); \
+ DST[3] = CLAMP((VALUE[ACOMP]), 0.0F, 1.0F)
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[0] = MAX2((VALUE[RCOMP]), 0.0F); \
+ DST[1] = MAX2((VALUE[GCOMP]), 0.0F); \
+ DST[2] = MAX2((VALUE[BCOMP]), 0.0F); \
+ DST[3] = 1.0F
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[0]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[2]; \
+ DST[ACOMP] = SRC[3]
+#include "swrast/s_spantemp.h"
+
+
+/* 8-bit BGRA */
+#define NAME(PREFIX) PREFIX##_BGRA8
+#define RB_TYPE GLubyte
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLubyte *P = (GLubyte *) osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 4
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[2] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[0] = VALUE[BCOMP]; \
+ DST[3] = VALUE[ACOMP]
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[2] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[0] = VALUE[BCOMP]; \
+ DST[3] = 255
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[2]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[0]; \
+ DST[ACOMP] = SRC[3]
+#include "swrast/s_spantemp.h"
+
+/* 16-bit BGRA */
+#define NAME(PREFIX) PREFIX##_BGRA16
+#define RB_TYPE GLushort
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLushort *P = (GLushort *) osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 4
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[2] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[0] = VALUE[BCOMP]; \
+ DST[3] = VALUE[ACOMP]
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[2] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[0] = VALUE[BCOMP]; \
+ DST[3] = 65535
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[2]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[0]; \
+ DST[ACOMP] = SRC[3]
+#include "swrast/s_spantemp.h"
+
+/* 32-bit BGRA */
+#define NAME(PREFIX) PREFIX##_BGRA32
+#define RB_TYPE GLfloat
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLfloat *P = (GLfloat *) osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 4
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[2] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[0] = VALUE[BCOMP]; \
+ DST[3] = VALUE[ACOMP]
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[2] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[0] = VALUE[BCOMP]; \
+ DST[3] = 1.0F
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[2]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[0]; \
+ DST[ACOMP] = SRC[3]
+#include "swrast/s_spantemp.h"
+
+
+/* 8-bit ARGB */
+#define NAME(PREFIX) PREFIX##_ARGB8
+#define RB_TYPE GLubyte
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLubyte *P = (GLubyte *) osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 4
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[1] = VALUE[RCOMP]; \
+ DST[2] = VALUE[GCOMP]; \
+ DST[3] = VALUE[BCOMP]; \
+ DST[0] = VALUE[ACOMP]
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[1] = VALUE[RCOMP]; \
+ DST[2] = VALUE[GCOMP]; \
+ DST[3] = VALUE[BCOMP]; \
+ DST[0] = 255
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[1]; \
+ DST[GCOMP] = SRC[2]; \
+ DST[BCOMP] = SRC[3]; \
+ DST[ACOMP] = SRC[0]
+#include "swrast/s_spantemp.h"
+
+/* 16-bit ARGB */
+#define NAME(PREFIX) PREFIX##_ARGB16
+#define RB_TYPE GLushort
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLushort *P = (GLushort *) osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 4
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[1] = VALUE[RCOMP]; \
+ DST[2] = VALUE[GCOMP]; \
+ DST[3] = VALUE[BCOMP]; \
+ DST[0] = VALUE[ACOMP]
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[1] = VALUE[RCOMP]; \
+ DST[2] = VALUE[GCOMP]; \
+ DST[3] = VALUE[BCOMP]; \
+ DST[0] = 65535
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[1]; \
+ DST[GCOMP] = SRC[2]; \
+ DST[BCOMP] = SRC[3]; \
+ DST[ACOMP] = SRC[0]
+#include "swrast/s_spantemp.h"
+
+/* 32-bit ARGB */
+#define NAME(PREFIX) PREFIX##_ARGB32
+#define RB_TYPE GLfloat
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLfloat *P = (GLfloat *) osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 4
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[1] = VALUE[RCOMP]; \
+ DST[2] = VALUE[GCOMP]; \
+ DST[3] = VALUE[BCOMP]; \
+ DST[0] = VALUE[ACOMP]
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[1] = VALUE[RCOMP]; \
+ DST[2] = VALUE[GCOMP]; \
+ DST[3] = VALUE[BCOMP]; \
+ DST[0] = 1.0F
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[1]; \
+ DST[GCOMP] = SRC[2]; \
+ DST[BCOMP] = SRC[3]; \
+ DST[ACOMP] = SRC[0]
+#include "swrast/s_spantemp.h"
+
+
+/* 8-bit RGB */
+#define NAME(PREFIX) PREFIX##_RGB8
+#define RB_TYPE GLubyte
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLubyte *P = (GLubyte *) osmesa->rowaddr[Y] + 3 * (X)
+#define INC_PIXEL_PTR(P) P += 3
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[0] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[2] = VALUE[BCOMP]
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[0]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[2]; \
+ DST[ACOMP] = 255
+#include "swrast/s_spantemp.h"
+
+/* 16-bit RGB */
+#define NAME(PREFIX) PREFIX##_RGB16
+#define RB_TYPE GLushort
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLushort *P = (GLushort *) osmesa->rowaddr[Y] + 3 * (X)
+#define INC_PIXEL_PTR(P) P += 3
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[0] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[2] = VALUE[BCOMP]
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[0]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[2]; \
+ DST[ACOMP] = 65535U
+#include "swrast/s_spantemp.h"
+
+/* 32-bit RGB */
+#define NAME(PREFIX) PREFIX##_RGB32
+#define RB_TYPE GLfloat
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLfloat *P = (GLfloat *) osmesa->rowaddr[Y] + 3 * (X)
+#define INC_PIXEL_PTR(P) P += 3
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[0] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[2] = VALUE[BCOMP]
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[0]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[2]; \
+ DST[ACOMP] = 1.0F
+#include "swrast/s_spantemp.h"
+
+
+/* 8-bit BGR */
+#define NAME(PREFIX) PREFIX##_BGR8
+#define RB_TYPE GLubyte
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLubyte *P = (GLubyte *) osmesa->rowaddr[Y] + 3 * (X)
+#define INC_PIXEL_PTR(P) P += 3
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[2] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[0] = VALUE[BCOMP]
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[2]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[0]; \
+ DST[ACOMP] = 255
+#include "swrast/s_spantemp.h"
+
+/* 16-bit BGR */
+#define NAME(PREFIX) PREFIX##_BGR16
+#define RB_TYPE GLushort
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLushort *P = (GLushort *) osmesa->rowaddr[Y] + 3 * (X)
+#define INC_PIXEL_PTR(P) P += 3
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[2] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[0] = VALUE[BCOMP]
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[2]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[0]; \
+ DST[ACOMP] = 65535
+#include "swrast/s_spantemp.h"
+
+/* 32-bit BGR */
+#define NAME(PREFIX) PREFIX##_BGR32
+#define RB_TYPE GLfloat
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLfloat *P = (GLfloat *) osmesa->rowaddr[Y] + 3 * (X)
+#define INC_PIXEL_PTR(P) P += 3
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[2] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[0] = VALUE[BCOMP]
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[2]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[0]; \
+ DST[ACOMP] = 1.0F
+#include "swrast/s_spantemp.h"
+
+
+/* 16-bit 5/6/5 RGB */
+#define NAME(PREFIX) PREFIX##_RGB_565
+#define RB_TYPE GLubyte
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLushort *P = (GLushort *) osmesa->rowaddr[Y] + (X)
+#define INC_PIXEL_PTR(P) P += 1
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ *DST = ( (((VALUE[RCOMP]) & 0xf8) << 8) | (((VALUE[GCOMP]) & 0xfc) << 3) | ((VALUE[BCOMP]) >> 3) )
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = ( (((*SRC) >> 8) & 0xf8) | (((*SRC) >> 11) & 0x7) ); \
+ DST[GCOMP] = ( (((*SRC) >> 3) & 0xfc) | (((*SRC) >> 5) & 0x3) ); \
+ DST[BCOMP] = ( (((*SRC) << 3) & 0xf8) | (((*SRC) ) & 0x7) ); \
+ DST[ACOMP] = CHAN_MAX
+#include "swrast/s_spantemp.h"
+
+
+/* color index */
+#define NAME(PREFIX) PREFIX##_CI
+#define CI_MODE
+#define RB_TYPE GLubyte
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLubyte *P = (GLubyte *) osmesa->rowaddr[Y] + (X)
+#define INC_PIXEL_PTR(P) P += 1
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ *DST = VALUE[0]
+#define FETCH_PIXEL(DST, SRC) \
+ DST = SRC[0]
+#include "swrast/s_spantemp.h"
-/*
- * Create an Off-Screen Mesa rendering context. The only attribute needed is
- * an RGBA vs Color-Index mode flag.
- *
- * Input: format - either GL_RGBA or GL_COLOR_INDEX
- * sharelist - specifies another OSMesaContext with which to share
- * display lists. NULL indicates no sharing.
- * Return: an OSMesaContext or 0 if error
- */
-GLAPI OSMesaContext GLAPIENTRY
-OSMesaCreateContext( GLenum format, OSMesaContext sharelist )
-{
- return OSMesaCreateContextExt(format, DEFAULT_SOFTWARE_DEPTH_BITS,
- 8, 16, sharelist);
-}
-/*
- * New in Mesa 3.5
- *
- * Create context and specify size of ancillary buffers.
+/**
+ * Macros for optimized line/triangle rendering.
+ * Only for 8-bit channel, RGBA, BGRA, ARGB formats.
*/
-GLAPI OSMesaContext GLAPIENTRY
-OSMesaCreateContextExt( GLenum format, GLint depthBits, GLint stencilBits,
- GLint accumBits, OSMesaContext sharelist )
-{
- OSMesaContext osmesa;
- GLint rshift, gshift, bshift, ashift;
- GLint rind, gind, bind, aind;
- GLint indexBits = 0, redBits = 0, greenBits = 0, blueBits = 0, alphaBits =0;
- GLboolean rgbmode;
- const GLuint i4 = 1;
- const GLubyte *i1 = (GLubyte *) &i4;
- const GLint little_endian = *i1;
- __GLimports imports;
- rind = gind = bind = aind = 0;
- if (format==OSMESA_COLOR_INDEX) {
- indexBits = 8;
- rshift = gshift = bshift = ashift = 0;
- rgbmode = GL_FALSE;
- }
- else if (format==OSMESA_RGBA) {
- indexBits = 0;
- redBits = CHAN_BITS;
- greenBits = CHAN_BITS;
- blueBits = CHAN_BITS;
- alphaBits = CHAN_BITS;
- rind = 0;
- gind = 1;
- bind = 2;
- aind = 3;
- if (little_endian) {
- rshift = 0;
- gshift = 8;
- bshift = 16;
- ashift = 24;
- }
- else {
- rshift = 24;
- gshift = 16;
- bshift = 8;
- ashift = 0;
- }
- rgbmode = GL_TRUE;
- }
- else if (format==OSMESA_BGRA) {
- indexBits = 0;
- redBits = CHAN_BITS;
- greenBits = CHAN_BITS;
- blueBits = CHAN_BITS;
- alphaBits = CHAN_BITS;
- bind = 0;
- gind = 1;
- rind = 2;
- aind = 3;
- if (little_endian) {
- bshift = 0;
- gshift = 8;
- rshift = 16;
- ashift = 24;
- }
- else {
- bshift = 24;
- gshift = 16;
- rshift = 8;
- ashift = 0;
- }
- rgbmode = GL_TRUE;
- }
- else if (format==OSMESA_ARGB) {
- indexBits = 0;
- redBits = CHAN_BITS;
- greenBits = CHAN_BITS;
- blueBits = CHAN_BITS;
- alphaBits = CHAN_BITS;
- aind = 0;
- rind = 1;
- gind = 2;
- bind = 3;
- if (little_endian) {
- ashift = 0;
- rshift = 8;
- gshift = 16;
- bshift = 24;
- }
- else {
- ashift = 24;
- rshift = 16;
- gshift = 8;
- bshift = 0;
- }
- rgbmode = GL_TRUE;
- }
- else if (format==OSMESA_RGB) {
- indexBits = 0;
- redBits = CHAN_BITS;
- greenBits = CHAN_BITS;
- blueBits = CHAN_BITS;
- alphaBits = 0;
- bshift = 0;
- gshift = 8;
- rshift = 16;
- ashift = 24;
- rind = 0;
- gind = 1;
- bind = 2;
- rgbmode = GL_TRUE;
- }
- else if (format==OSMESA_BGR) {
- indexBits = 0;
- redBits = CHAN_BITS;
- greenBits = CHAN_BITS;
- blueBits = CHAN_BITS;
- alphaBits = 0;
- bshift = 0;
- gshift = 8;
- rshift = 16;
- ashift = 24;
- rind = 2;
- gind = 1;
- bind = 0;
- rgbmode = GL_TRUE;
- }
- else if (format==OSMESA_RGB_565) {
- indexBits = 0;
- redBits = 5;
- greenBits = 6;
- blueBits = 5;
- alphaBits = 0;
- rshift = 11;
- gshift = 5;
- bshift = 0;
- ashift = 0;
- rind = 0; /* not used */
- gind = 0;
- bind = 0;
- rgbmode = GL_TRUE;
- }
- else {
- return NULL;
- }
+#define PACK_RGBA(DST, R, G, B, A) \
+do { \
+ (DST)[osmesa->rInd] = R; \
+ (DST)[osmesa->gInd] = G; \
+ (DST)[osmesa->bInd] = B; \
+ (DST)[osmesa->aInd] = A; \
+} while (0)
+#define PIXELADDR4(X,Y) ((GLchan *) osmesa->rowaddr[Y] + 4 * (X))
- osmesa = (OSMesaContext) CALLOC_STRUCT(osmesa_context);
- if (osmesa) {
- osmesa->gl_visual = _mesa_create_visual( rgbmode,
- GL_FALSE, /* double buffer */
- GL_FALSE, /* stereo */
- redBits,
- greenBits,
- blueBits,
- alphaBits,
- indexBits,
- depthBits,
- stencilBits,
- accumBits,
- accumBits,
- accumBits,
- alphaBits ? accumBits : 0,
- 1 /* num samples */
- );
- if (!osmesa->gl_visual) {
- FREE(osmesa);
- return NULL;
- }
- _mesa_init_default_imports( &imports, (void *) osmesa );
- if (!_mesa_initialize_context(&osmesa->gl_ctx,
- osmesa->gl_visual,
- sharelist ? &sharelist->gl_ctx
- : (GLcontext *) NULL,
- &imports)) {
- _mesa_destroy_visual( osmesa->gl_visual );
- FREE(osmesa);
- return NULL;
- }
+/**
+ * Draw a flat-shaded, RGB line into an osmesa buffer.
+ */
+#define NAME flat_rgba_line
+#define CLIP_HACK 1
+#define SETUP_CODE \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); \
+ const GLchan *color = vert1->color;
- _mesa_enable_sw_extensions(&(osmesa->gl_ctx));
- _mesa_enable_1_3_extensions(&(osmesa->gl_ctx));
+#define PLOT(X, Y) \
+do { \
+ GLchan *p = PIXELADDR4(X, Y); \
+ PACK_RGBA(p, color[0], color[1], color[2], color[3]); \
+} while (0)
- osmesa->gl_buffer = _mesa_create_framebuffer( osmesa->gl_visual,
- (GLboolean) ( osmesa->gl_visual->depthBits > 0 ),
- (GLboolean) ( osmesa->gl_visual->stencilBits > 0 ),
- (GLboolean) ( osmesa->gl_visual->accumRedBits > 0 ),
- GL_FALSE /* s/w alpha */ );
+#ifdef WIN32
+#include "..\swrast\s_linetemp.h"
+#else
+#include "swrast/s_linetemp.h"
+#endif
- if (!osmesa->gl_buffer) {
- _mesa_destroy_visual( osmesa->gl_visual );
- _mesa_free_context_data( &osmesa->gl_ctx );
- FREE(osmesa);
- return NULL;
- }
- osmesa->format = format;
- osmesa->buffer = NULL;
- osmesa->width = 0;
- osmesa->height = 0;
- osmesa->userRowLength = 0;
- osmesa->rowlength = 0;
- osmesa->yup = GL_TRUE;
- osmesa->rshift = rshift;
- osmesa->gshift = gshift;
- osmesa->bshift = bshift;
- osmesa->ashift = ashift;
- osmesa->rInd = rind;
- osmesa->gInd = gind;
- osmesa->bInd = bind;
- osmesa->aInd = aind;
- /* Initialize the software rasterizer and helper modules.
- */
- {
- GLcontext *ctx = &osmesa->gl_ctx;
+/**
+ * Draw a flat-shaded, Z-less, RGB line into an osmesa buffer.
+ */
+#define NAME flat_rgba_z_line
+#define CLIP_HACK 1
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define SETUP_CODE \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); \
+ const GLchan *color = vert1->color;
- _swrast_CreateContext( ctx );
- _ac_CreateContext( ctx );
- _tnl_CreateContext( ctx );
- _swsetup_CreateContext( ctx );
-
- _swsetup_Wakeup( ctx );
- osmesa_register_swrast_functions( ctx );
- }
- }
- return osmesa;
-}
+#define PLOT(X, Y) \
+do { \
+ if (Z < *zPtr) { \
+ GLchan *p = PIXELADDR4(X, Y); \
+ PACK_RGBA(p, color[RCOMP], color[GCOMP], \
+ color[BCOMP], color[ACOMP]); \
+ *zPtr = Z; \
+ } \
+} while (0)
+#ifdef WIN32
+#include "..\swrast\s_linetemp.h"
+#else
+#include "swrast/s_linetemp.h"
+#endif
-/*
- * Destroy an Off-Screen Mesa rendering context.
- *
- * Input: ctx - the context to destroy
+/**
+ * Analyze context state to see if we can provide a fast line drawing
+ * function. Otherwise, return NULL.
*/
-GLAPI void GLAPIENTRY OSMesaDestroyContext( OSMesaContext ctx )
+static swrast_line_func
+osmesa_choose_line_function( GLcontext *ctx )
{
- if (ctx) {
- _swsetup_DestroyContext( &ctx->gl_ctx );
- _tnl_DestroyContext( &ctx->gl_ctx );
- _ac_DestroyContext( &ctx->gl_ctx );
- _swrast_DestroyContext( &ctx->gl_ctx );
-
- _mesa_destroy_visual( ctx->gl_visual );
- _mesa_destroy_framebuffer( ctx->gl_buffer );
- _mesa_free_context_data( &ctx->gl_ctx );
- FREE( ctx );
- }
-}
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+ const SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ if (osmesa->rb->DataType != GL_UNSIGNED_BYTE)
+ return NULL;
+
+ if (ctx->RenderMode != GL_RENDER) return NULL;
+ if (ctx->Line.SmoothFlag) return NULL;
+ if (ctx->Texture._EnabledUnits) return NULL;
+ if (ctx->Light.ShadeModel != GL_FLAT) return NULL;
+ if (ctx->Line.Width != 1.0F) return NULL;
+ if (ctx->Line.StippleFlag) return NULL;
+ if (ctx->Line.SmoothFlag) return NULL;
+ if (osmesa->format != OSMESA_RGBA &&
+ osmesa->format != OSMESA_BGRA &&
+ osmesa->format != OSMESA_ARGB) return NULL;
+
+ if (swrast->_RasterMask==DEPTH_BIT
+ && ctx->Depth.Func==GL_LESS
+ && ctx->Depth.Mask==GL_TRUE
+ && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) {
+ return (swrast_line_func) flat_rgba_z_line;
+ }
+
+ if (swrast->_RasterMask == 0) {
+ return (swrast_line_func) flat_rgba_line;
+ }
+
+ return (swrast_line_func) NULL;
+}
+
+
+/**********************************************************************/
+/***** Optimized triangle rendering *****/
+/**********************************************************************/
+
+
+/*
+ * Smooth-shaded, z-less triangle, RGBA color.
+ */
+#define NAME smooth_rgba_z_triangle
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define INTERP_RGB 1
+#define INTERP_ALPHA 1
+#define SETUP_CODE \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define RENDER_SPAN( span ) { \
+ GLuint i; \
+ GLchan *img = PIXELADDR4(span.x, span.y); \
+ for (i = 0; i < span.end; i++, img += 4) { \
+ const GLuint z = FixedToDepth(span.z); \
+ if (z < zRow[i]) { \
+ PACK_RGBA(img, FixedToChan(span.red), \
+ FixedToChan(span.green), FixedToChan(span.blue), \
+ FixedToChan(span.alpha)); \
+ zRow[i] = z; \
+ } \
+ span.red += span.redStep; \
+ span.green += span.greenStep; \
+ span.blue += span.blueStep; \
+ span.alpha += span.alphaStep; \
+ span.z += span.zStep; \
+ } \
+}
+#ifdef WIN32
+#include "..\swrast\s_tritemp.h"
+#else
+#include "swrast/s_tritemp.h"
+#endif
/*
+ * Flat-shaded, z-less triangle, RGBA color.
+ */
+#define NAME flat_rgba_z_triangle
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define SETUP_CODE \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); \
+ GLuint pixel; \
+ PACK_RGBA((GLchan *) &pixel, v2->color[0], v2->color[1], \
+ v2->color[2], v2->color[3]);
+
+#define RENDER_SPAN( span ) { \
+ GLuint i; \
+ GLuint *img = (GLuint *) PIXELADDR4(span.x, span.y); \
+ for (i = 0; i < span.end; i++) { \
+ const GLuint z = FixedToDepth(span.z); \
+ if (z < zRow[i]) { \
+ img[i] = pixel; \
+ zRow[i] = z; \
+ } \
+ span.z += span.zStep; \
+ } \
+}
+#ifdef WIN32
+#include "..\swrast\s_tritemp.h"
+#else
+#include "swrast/s_tritemp.h"
+#endif
+
+
+
+/**
+ * Return pointer to an optimized triangle function if possible.
+ */
+static swrast_tri_func
+osmesa_choose_triangle_function( GLcontext *ctx )
+{
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+ const SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ if (osmesa->rb->DataType != GL_UNSIGNED_BYTE)
+ return (swrast_tri_func) NULL;
+
+ if (ctx->RenderMode != GL_RENDER) return (swrast_tri_func) NULL;
+ if (ctx->Polygon.SmoothFlag) return (swrast_tri_func) NULL;
+ if (ctx->Polygon.StippleFlag) return (swrast_tri_func) NULL;
+ if (ctx->Texture._EnabledUnits) return (swrast_tri_func) NULL;
+ if (osmesa->format != OSMESA_RGBA &&
+ osmesa->format != OSMESA_BGRA &&
+ osmesa->format != OSMESA_ARGB) return (swrast_tri_func) NULL;
+ if (ctx->Polygon.CullFlag &&
+ ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
+ return (swrast_tri_func) NULL;
+
+ if (swrast->_RasterMask == DEPTH_BIT &&
+ ctx->Depth.Func == GL_LESS &&
+ ctx->Depth.Mask == GL_TRUE &&
+ ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) {
+ if (ctx->Light.ShadeModel == GL_SMOOTH) {
+ return (swrast_tri_func) smooth_rgba_z_triangle;
+ }
+ else {
+ return (swrast_tri_func) flat_rgba_z_triangle;
+ }
+ }
+ return (swrast_tri_func) NULL;
+}
+
+
+
+/* Override for the swrast triangle-selection function. Try to use one
+ * of our internal triangle functions, otherwise fall back to the
+ * standard swrast functions.
+ */
+static void
+osmesa_choose_triangle( GLcontext *ctx )
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ swrast->Triangle = osmesa_choose_triangle_function( ctx );
+ if (!swrast->Triangle)
+ _swrast_choose_triangle( ctx );
+}
+
+static void
+osmesa_choose_line( GLcontext *ctx )
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ swrast->Line = osmesa_choose_line_function( ctx );
+ if (!swrast->Line)
+ _swrast_choose_line( ctx );
+}
+
+
+
+/**
* Recompute the values of the context's rowaddr array.
*/
-static void compute_row_addresses( OSMesaContext ctx )
+static void
+compute_row_addresses( OSMesaContext osmesa )
{
GLint bytesPerPixel, bytesPerRow, i;
- GLubyte *origin = (GLubyte *) ctx->buffer;
+ GLubyte *origin = (GLubyte *) osmesa->rb->Data;
+ GLint bpc; /* bytes per channel */
+ GLint rowlength; /* in pixels */
+ GLint height = osmesa->rb->Height;
+
+ if (osmesa->userRowLength)
+ rowlength = osmesa->userRowLength;
+ else
+ rowlength = osmesa->rb->Width;
+
+ if (osmesa->rb->DataType == GL_UNSIGNED_BYTE)
+ bpc = 1;
+ else if (osmesa->rb->DataType == GL_UNSIGNED_SHORT)
+ bpc = 2;
+ else if (osmesa->rb->DataType == GL_FLOAT)
+ bpc = 4;
+ else {
+ _mesa_problem(&osmesa->mesa,
+ "Unexpected datatype in osmesa::compute_row_addresses");
+ return;
+ }
- if (ctx->format == OSMESA_COLOR_INDEX) {
+ if (osmesa->format == OSMESA_COLOR_INDEX) {
/* CI mode */
- bytesPerPixel = 1 * sizeof(GLchan);
+ bytesPerPixel = 1 * sizeof(GLubyte);
}
- else if ((ctx->format == OSMESA_RGB) || (ctx->format == OSMESA_BGR)) {
+ else if ((osmesa->format == OSMESA_RGB) || (osmesa->format == OSMESA_BGR)) {
/* RGB mode */
- bytesPerPixel = 3 * sizeof(GLchan);
+ bytesPerPixel = 3 * bpc;
}
- else if (ctx->format == OSMESA_RGB_565) {
+ else if (osmesa->format == OSMESA_RGB_565) {
/* 5/6/5 RGB pixel in 16 bits */
bytesPerPixel = 2;
}
else {
/* RGBA mode */
- bytesPerPixel = 4 * sizeof(GLchan);
+ bytesPerPixel = 4 * bpc;
}
- bytesPerRow = ctx->rowlength * bytesPerPixel;
+ bytesPerRow = rowlength * bytesPerPixel;
- if (ctx->yup) {
+ if (osmesa->yup) {
/* Y=0 is bottom line of window */
- for (i = 0; i < MAX_HEIGHT; i++) {
- ctx->rowaddr[i] = (GLchan *) ((GLubyte *) origin + i * bytesPerRow);
+ for (i = 0; i < height; i++) {
+ osmesa->rowaddr[i] = (GLvoid *) ((GLubyte *) origin + i * bytesPerRow);
}
}
else {
/* Y=0 is top line of window */
- for (i = 0; i < MAX_HEIGHT; i++) {
- GLint j = ctx->height - i - 1;
- ctx->rowaddr[i] = (GLchan *) ((GLubyte *) origin + j * bytesPerRow);
+ for (i = 0; i < height; i++) {
+ GLint j = height - i - 1;
+ osmesa->rowaddr[i] = (GLvoid *) ((GLubyte *) origin + j * bytesPerRow);
}
}
}
-/*
- * Bind an OSMesaContext to an image buffer. The image buffer is just a
- * block of memory which the client provides. Its size must be at least
- * as large as width*height*sizeof(type). Its address should be a multiple
- * of 4 if using RGBA mode.
- *
- * Image data is stored in the order of glDrawPixels: row-major order
- * with the lower-left image pixel stored in the first array position
- * (ie. bottom-to-top).
- *
- * If the context's viewport hasn't been initialized yet, it will now be
- * initialized to (0,0,width,height).
- *
- * Input: ctx - the rendering context
- * buffer - the image buffer memory
- * type - data type for pixel components
- * Normally, only GL_UNSIGNED_BYTE and GL_UNSIGNED_SHORT_5_6_5
- * are supported. But if Mesa's been compiled with CHAN_BITS==16
- * then type must be GL_UNSIGNED_SHORT. And if Mesa's been build
- * with CHAN_BITS==32 then type must be GL_FLOAT.
- * width, height - size of image buffer in pixels, at least 1
- * Return: GL_TRUE if success, GL_FALSE if error because of invalid ctx,
- * invalid buffer address, invalid type, width<1, height<1,
- * width>internal limit or height>internal limit.
+
+/**
+ * Don't use _mesa_delete_renderbuffer since we can't free rb->Data.
*/
-GLAPI GLboolean GLAPIENTRY
-OSMesaMakeCurrent( OSMesaContext ctx, void *buffer, GLenum type,
- GLsizei width, GLsizei height )
+static void
+osmesa_delete_renderbuffer(struct gl_renderbuffer *rb)
{
- if (!ctx || !buffer ||
- width < 1 || height < 1 ||
- width > MAX_WIDTH || height > MAX_HEIGHT) {
- return GL_FALSE;
- }
+ _mesa_free(rb);
+}
- if (ctx->format == OSMESA_RGB_565) {
- if (type != GL_UNSIGNED_SHORT_5_6_5)
- return GL_FALSE;
- }
- else if (type != CHAN_TYPE) {
- return GL_FALSE;
- }
- osmesa_update_state( &ctx->gl_ctx, 0 );
- _mesa_make_current( &ctx->gl_ctx, ctx->gl_buffer );
+/**
+ * Allocate renderbuffer storage. We don't actually allocate any storage
+ * since we're using a user-provided buffer.
+ * Just set up all the gl_renderbuffer methods.
+ */
+static GLboolean
+osmesa_renderbuffer_storage(GLcontext *ctx, struct gl_renderbuffer *rb,
+ GLenum internalFormat, GLuint width, GLuint height)
+{
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+ GLint bpc; /* bits per channel */
- ctx->buffer = buffer;
- ctx->width = width;
- ctx->height = height;
- if (ctx->userRowLength)
- ctx->rowlength = ctx->userRowLength;
+ if (rb->DataType == GL_UNSIGNED_BYTE)
+ bpc = 8;
+ else if (rb->DataType == GL_UNSIGNED_SHORT)
+ bpc = 16;
else
- ctx->rowlength = width;
-
- compute_row_addresses( ctx );
-
- /* init viewport */
- if (ctx->gl_ctx.Viewport.Width == 0) {
- /* initialize viewport and scissor box to buffer size */
- _mesa_Viewport( 0, 0, width, height );
- ctx->gl_ctx.Scissor.Width = width;
- ctx->gl_ctx.Scissor.Height = height;
+ bpc = 32;
+
+ rb->RedBits =
+ rb->GreenBits =
+ rb->BlueBits =
+ rb->AlphaBits = bpc;
+
+ /* Note: we can ignoring internalFormat for "window-system" renderbuffers */
+ (void) internalFormat;
+
+ if (osmesa->format == OSMESA_RGBA) {
+ if (rb->DataType == GL_UNSIGNED_BYTE) {
+ rb->GetRow = get_row_RGBA8;
+ rb->GetValues = get_values_RGBA8;
+ rb->PutRow = put_row_RGBA8;
+ rb->PutRowRGB = put_row_rgb_RGBA8;
+ rb->PutMonoRow = put_mono_row_RGBA8;
+ rb->PutValues = put_values_RGBA8;
+ rb->PutMonoValues = put_mono_values_RGBA8;
+ }
+ else if (rb->DataType == GL_UNSIGNED_SHORT) {
+ rb->GetRow = get_row_RGBA16;
+ rb->GetValues = get_values_RGBA16;
+ rb->PutRow = put_row_RGBA16;
+ rb->PutRowRGB = put_row_rgb_RGBA16;
+ rb->PutMonoRow = put_mono_row_RGBA16;
+ rb->PutValues = put_values_RGBA16;
+ rb->PutMonoValues = put_mono_values_RGBA16;
+ }
+ else {
+ rb->GetRow = get_row_RGBA32;
+ rb->GetValues = get_values_RGBA32;
+ rb->PutRow = put_row_RGBA32;
+ rb->PutRowRGB = put_row_rgb_RGBA32;
+ rb->PutMonoRow = put_mono_row_RGBA32;
+ rb->PutValues = put_values_RGBA32;
+ rb->PutMonoValues = put_mono_values_RGBA32;
+ }
+ rb->RedBits = rb->GreenBits = rb->BlueBits = rb->AlphaBits = bpc;
+ }
+ else if (osmesa->format == OSMESA_BGRA) {
+ if (rb->DataType == GL_UNSIGNED_BYTE) {
+ rb->GetRow = get_row_BGRA8;
+ rb->GetValues = get_values_BGRA8;
+ rb->PutRow = put_row_BGRA8;
+ rb->PutRowRGB = put_row_rgb_BGRA8;
+ rb->PutMonoRow = put_mono_row_BGRA8;
+ rb->PutValues = put_values_BGRA8;
+ rb->PutMonoValues = put_mono_values_BGRA8;
+ }
+ else if (rb->DataType == GL_UNSIGNED_SHORT) {
+ rb->GetRow = get_row_BGRA16;
+ rb->GetValues = get_values_BGRA16;
+ rb->PutRow = put_row_BGRA16;
+ rb->PutRowRGB = put_row_rgb_BGRA16;
+ rb->PutMonoRow = put_mono_row_BGRA16;
+ rb->PutValues = put_values_BGRA16;
+ rb->PutMonoValues = put_mono_values_BGRA16;
+ }
+ else {
+ rb->GetRow = get_row_BGRA32;
+ rb->GetValues = get_values_BGRA32;
+ rb->PutRow = put_row_BGRA32;
+ rb->PutRowRGB = put_row_rgb_BGRA32;
+ rb->PutMonoRow = put_mono_row_BGRA32;
+ rb->PutValues = put_values_BGRA32;
+ rb->PutMonoValues = put_mono_values_BGRA32;
+ }
+ rb->RedBits = rb->GreenBits = rb->BlueBits = rb->AlphaBits = bpc;
+ }
+ else if (osmesa->format == OSMESA_ARGB) {
+ if (rb->DataType == GL_UNSIGNED_BYTE) {
+ rb->GetRow = get_row_ARGB8;
+ rb->GetValues = get_values_ARGB8;
+ rb->PutRow = put_row_ARGB8;
+ rb->PutRowRGB = put_row_rgb_ARGB8;
+ rb->PutMonoRow = put_mono_row_ARGB8;
+ rb->PutValues = put_values_ARGB8;
+ rb->PutMonoValues = put_mono_values_ARGB8;
+ }
+ else if (rb->DataType == GL_UNSIGNED_SHORT) {
+ rb->GetRow = get_row_ARGB16;
+ rb->GetValues = get_values_ARGB16;
+ rb->PutRow = put_row_ARGB16;
+ rb->PutRowRGB = put_row_rgb_ARGB16;
+ rb->PutMonoRow = put_mono_row_ARGB16;
+ rb->PutValues = put_values_ARGB16;
+ rb->PutMonoValues = put_mono_values_ARGB16;
+ }
+ else {
+ rb->GetRow = get_row_ARGB32;
+ rb->GetValues = get_values_ARGB32;
+ rb->PutRow = put_row_ARGB32;
+ rb->PutRowRGB = put_row_rgb_ARGB32;
+ rb->PutMonoRow = put_mono_row_ARGB32;
+ rb->PutValues = put_values_ARGB32;
+ rb->PutMonoValues = put_mono_values_ARGB32;
+ }
+ rb->RedBits = rb->GreenBits = rb->BlueBits = rb->AlphaBits = bpc;
+ }
+ else if (osmesa->format == OSMESA_RGB) {
+ if (rb->DataType == GL_UNSIGNED_BYTE) {
+ rb->GetRow = get_row_RGB8;
+ rb->GetValues = get_values_RGB8;
+ rb->PutRow = put_row_RGB8;
+ rb->PutRowRGB = put_row_rgb_RGB8;
+ rb->PutMonoRow = put_mono_row_RGB8;
+ rb->PutValues = put_values_RGB8;
+ rb->PutMonoValues = put_mono_values_RGB8;
+ }
+ else if (rb->DataType == GL_UNSIGNED_SHORT) {
+ rb->GetRow = get_row_RGB16;
+ rb->GetValues = get_values_RGB16;
+ rb->PutRow = put_row_RGB16;
+ rb->PutRowRGB = put_row_rgb_RGB16;
+ rb->PutMonoRow = put_mono_row_RGB16;
+ rb->PutValues = put_values_RGB16;
+ rb->PutMonoValues = put_mono_values_RGB16;
+ }
+ else {
+ rb->GetRow = get_row_RGB32;
+ rb->GetValues = get_values_RGB32;
+ rb->PutRow = put_row_RGB32;
+ rb->PutRowRGB = put_row_rgb_RGB32;
+ rb->PutMonoRow = put_mono_row_RGB32;
+ rb->PutValues = put_values_RGB32;
+ rb->PutMonoValues = put_mono_values_RGB32;
+ }
+ rb->RedBits = rb->GreenBits = rb->BlueBits = bpc;
+ }
+ else if (osmesa->format == OSMESA_BGR) {
+ if (rb->DataType == GL_UNSIGNED_BYTE) {
+ rb->GetRow = get_row_BGR8;
+ rb->GetValues = get_values_BGR8;
+ rb->PutRow = put_row_BGR8;
+ rb->PutRowRGB = put_row_rgb_BGR8;
+ rb->PutMonoRow = put_mono_row_BGR8;
+ rb->PutValues = put_values_BGR8;
+ rb->PutMonoValues = put_mono_values_BGR8;
+ }
+ else if (rb->DataType == GL_UNSIGNED_SHORT) {
+ rb->GetRow = get_row_BGR16;
+ rb->GetValues = get_values_BGR16;
+ rb->PutRow = put_row_BGR16;
+ rb->PutRowRGB = put_row_rgb_BGR16;
+ rb->PutMonoRow = put_mono_row_BGR16;
+ rb->PutValues = put_values_BGR16;
+ rb->PutMonoValues = put_mono_values_BGR16;
+ }
+ else {
+ rb->GetRow = get_row_BGR32;
+ rb->GetValues = get_values_BGR32;
+ rb->PutRow = put_row_BGR32;
+ rb->PutRowRGB = put_row_rgb_BGR32;
+ rb->PutMonoRow = put_mono_row_BGR32;
+ rb->PutValues = put_values_BGR32;
+ rb->PutMonoValues = put_mono_values_BGR32;
+ }
+ rb->RedBits = rb->GreenBits = rb->BlueBits = bpc;
+ }
+ else if (osmesa->format == OSMESA_RGB_565) {
+ ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+ rb->GetRow = get_row_RGB_565;
+ rb->GetValues = get_values_RGB_565;
+ rb->PutRow = put_row_RGB_565;
+ rb->PutRowRGB = put_row_rgb_RGB_565;
+ rb->PutMonoRow = put_mono_row_RGB_565;
+ rb->PutValues = put_values_RGB_565;
+ rb->PutMonoValues = put_mono_values_RGB_565;
+ rb->RedBits = 5;
+ rb->GreenBits = 6;
+ rb->BlueBits = 5;
+ }
+ else if (osmesa->format == OSMESA_COLOR_INDEX) {
+ rb->GetRow = get_row_CI;
+ rb->GetValues = get_values_CI;
+ rb->PutRow = put_row_CI;
+ rb->PutMonoRow = put_mono_row_CI;
+ rb->PutValues = put_values_CI;
+ rb->PutMonoValues = put_mono_values_CI;
+ rb->IndexBits = 8;
}
else {
- /* this will make ensure we recognize the new buffer size */
- _mesa_ResizeBuffersMESA();
+ _mesa_problem(ctx, "bad pixel format in osmesa renderbuffer_storage");
}
- /* Added by Gerk Huisma: */
- _tnl_MakeCurrent( &ctx->gl_ctx, ctx->gl_ctx.DrawBuffer,
- ctx->gl_ctx.ReadBuffer );
+ rb->Width = width;
+ rb->Height = height;
+
+ compute_row_addresses( osmesa );
return GL_TRUE;
}
-
-GLAPI OSMesaContext GLAPIENTRY OSMesaGetCurrentContext( void )
-{
- GLcontext *ctx = _mesa_get_current_context();
- if (ctx)
- return (OSMesaContext) ctx;
- else
- return NULL;
+/**
+ * Allocate a new renderbuffer to describe the user-provided color buffer.
+ */
+static struct gl_renderbuffer *
+new_osmesa_renderbuffer(GLcontext *ctx, GLenum format, GLenum type)
+{
+ const GLuint name = 0;
+ struct gl_renderbuffer *rb = _mesa_new_renderbuffer(ctx, name);
+ if (rb) {
+ rb->RefCount = 1;
+ rb->Delete = osmesa_delete_renderbuffer;
+ rb->AllocStorage = osmesa_renderbuffer_storage;
+
+ if (format == OSMESA_COLOR_INDEX) {
+ rb->InternalFormat = GL_COLOR_INDEX;
+ rb->_ActualFormat = GL_COLOR_INDEX8_EXT;
+ rb->_BaseFormat = GL_COLOR_INDEX;
+ rb->DataType = GL_UNSIGNED_BYTE;
+ }
+ else {
+ rb->InternalFormat = GL_RGBA;
+ rb->_ActualFormat = GL_RGBA;
+ rb->_BaseFormat = GL_RGBA;
+ rb->DataType = type;
+ }
+ }
+ return rb;
}
+/**********************************************************************/
+/***** Public Functions *****/
+/**********************************************************************/
-GLAPI void GLAPIENTRY OSMesaPixelStore( GLint pname, GLint value )
-{
- OSMesaContext ctx = OSMesaGetCurrentContext();
-
- switch (pname) {
- case OSMESA_ROW_LENGTH:
- if (value<0) {
- _mesa_error( &ctx->gl_ctx, GL_INVALID_VALUE,
- "OSMesaPixelStore(value)" );
- return;
- }
- ctx->userRowLength = value;
- ctx->rowlength = value;
- break;
- case OSMESA_Y_UP:
- ctx->yup = value ? GL_TRUE : GL_FALSE;
- break;
- default:
- _mesa_error( &ctx->gl_ctx, GL_INVALID_ENUM, "OSMesaPixelStore(pname)" );
- return;
- }
- compute_row_addresses( ctx );
+/**
+ * Create an Off-Screen Mesa rendering context. The only attribute needed is
+ * an RGBA vs Color-Index mode flag.
+ *
+ * Input: format - either GL_RGBA or GL_COLOR_INDEX
+ * sharelist - specifies another OSMesaContext with which to share
+ * display lists. NULL indicates no sharing.
+ * Return: an OSMesaContext or 0 if error
+ */
+GLAPI OSMesaContext GLAPIENTRY
+OSMesaCreateContext( GLenum format, OSMesaContext sharelist )
+{
+ const GLint accumBits = (format == OSMESA_COLOR_INDEX) ? 0 : 16;
+ return OSMesaCreateContextExt(format, DEFAULT_SOFTWARE_DEPTH_BITS,
+ 8, accumBits, sharelist);
}
-GLAPI void GLAPIENTRY OSMesaGetIntegerv( GLint pname, GLint *value )
+
+/**
+ * New in Mesa 3.5
+ *
+ * Create context and specify size of ancillary buffers.
+ */
+GLAPI OSMesaContext GLAPIENTRY
+OSMesaCreateContextExt( GLenum format, GLint depthBits, GLint stencilBits,
+ GLint accumBits, OSMesaContext sharelist )
{
- OSMesaContext ctx = OSMesaGetCurrentContext();
+ OSMesaContext osmesa;
+ struct dd_function_table functions;
+ GLint rind, gind, bind, aind;
+ GLint indexBits = 0, redBits = 0, greenBits = 0, blueBits = 0, alphaBits =0;
+ GLboolean rgbmode;
+ GLenum type = CHAN_TYPE;
- switch (pname) {
- case OSMESA_WIDTH:
- *value = ctx->width;
- return;
- case OSMESA_HEIGHT:
- *value = ctx->height;
- return;
- case OSMESA_FORMAT:
- *value = ctx->format;
- return;
- case OSMESA_TYPE:
- *value = CHAN_TYPE;
- return;
- case OSMESA_ROW_LENGTH:
- *value = ctx->rowlength;
- return;
- case OSMESA_Y_UP:
- *value = ctx->yup;
- return;
- case OSMESA_MAX_WIDTH:
- *value = MAX_WIDTH;
- return;
- case OSMESA_MAX_HEIGHT:
- *value = MAX_HEIGHT;
- return;
- default:
- _mesa_error(&ctx->gl_ctx, GL_INVALID_ENUM, "OSMesaGetIntergerv(pname)");
- return;
+ rind = gind = bind = aind = 0;
+ if (format==OSMESA_COLOR_INDEX) {
+ indexBits = 8;
+ rgbmode = GL_FALSE;
}
-}
-
-/*
- * Return the depth buffer associated with an OSMesa context.
- * Input: c - the OSMesa context
- * Output: width, height - size of buffer in pixels
- * bytesPerValue - bytes per depth value (2 or 4)
- * buffer - pointer to depth buffer values
- * Return: GL_TRUE or GL_FALSE to indicate success or failure.
- */
-GLAPI GLboolean GLAPIENTRY
-OSMesaGetDepthBuffer( OSMesaContext c, GLint *width, GLint *height,
- GLint *bytesPerValue, void **buffer )
-{
- if ((!c->gl_buffer) || (!c->gl_buffer->DepthBuffer)) {
- *width = 0;
- *height = 0;
- *bytesPerValue = 0;
- *buffer = 0;
- return GL_FALSE;
+ else if (format==OSMESA_RGBA) {
+ indexBits = 0;
+ redBits = CHAN_BITS;
+ greenBits = CHAN_BITS;
+ blueBits = CHAN_BITS;
+ alphaBits = CHAN_BITS;
+ rind = 0;
+ gind = 1;
+ bind = 2;
+ aind = 3;
+ rgbmode = GL_TRUE;
}
- else {
- *width = c->gl_buffer->Width;
- *height = c->gl_buffer->Height;
- if (c->gl_visual->depthBits <= 16)
- *bytesPerValue = sizeof(GLushort);
- else
- *bytesPerValue = sizeof(GLuint);
- *buffer = c->gl_buffer->DepthBuffer;
- return GL_TRUE;
+ else if (format==OSMESA_BGRA) {
+ indexBits = 0;
+ redBits = CHAN_BITS;
+ greenBits = CHAN_BITS;
+ blueBits = CHAN_BITS;
+ alphaBits = CHAN_BITS;
+ bind = 0;
+ gind = 1;
+ rind = 2;
+ aind = 3;
+ rgbmode = GL_TRUE;
}
-}
-
-/*
- * Return the color buffer associated with an OSMesa context.
- * Input: c - the OSMesa context
- * Output: width, height - size of buffer in pixels
- * format - the pixel format (OSMESA_FORMAT)
- * buffer - pointer to color buffer values
- * Return: GL_TRUE or GL_FALSE to indicate success or failure.
- */
-GLAPI GLboolean GLAPIENTRY
-OSMesaGetColorBuffer( OSMesaContext c, GLint *width,
- GLint *height, GLint *format, void **buffer )
-{
- if (!c->buffer) {
- *width = 0;
- *height = 0;
- *format = 0;
- *buffer = 0;
- return GL_FALSE;
+ else if (format==OSMESA_ARGB) {
+ indexBits = 0;
+ redBits = CHAN_BITS;
+ greenBits = CHAN_BITS;
+ blueBits = CHAN_BITS;
+ alphaBits = CHAN_BITS;
+ aind = 0;
+ rind = 1;
+ gind = 2;
+ bind = 3;
+ rgbmode = GL_TRUE;
}
- else {
- *width = c->width;
- *height = c->height;
- *format = c->format;
- *buffer = c->buffer;
- return GL_TRUE;
+ else if (format==OSMESA_RGB) {
+ indexBits = 0;
+ redBits = CHAN_BITS;
+ greenBits = CHAN_BITS;
+ blueBits = CHAN_BITS;
+ alphaBits = 0;
+ rind = 0;
+ gind = 1;
+ bind = 2;
+ rgbmode = GL_TRUE;
}
-}
-
-
-
-struct name_address {
- const char *Name;
- GLvoid *Address;
-};
-
-static struct name_address functions[] = {
- { "OSMesaCreateContext", (void *) OSMesaCreateContext },
- { "OSMesaCreateContextExt", (void *) OSMesaCreateContextExt },
- { "OSMesaDestroyContext", (void *) OSMesaDestroyContext },
- { "OSMesaMakeCurrent", (void *) OSMesaMakeCurrent },
- { "OSMesaGetCurrentContext", (void *) OSMesaGetCurrentContext },
- { "OSMesaPixelsStore", (void *) OSMesaPixelStore },
- { "OSMesaGetIntegerv", (void *) OSMesaGetIntegerv },
- { "OSMesaGetDepthBuffer", (void *) OSMesaGetDepthBuffer },
- { "OSMesaGetColorBuffer", (void *) OSMesaGetColorBuffer },
- { "OSMesaGetProcAddress", (void *) OSMesaGetProcAddress },
- { NULL, NULL }
-};
-
-GLAPI void * GLAPIENTRY
-OSMesaGetProcAddress( const char *funcName )
-{
- int i;
- for (i = 0; functions[i].Name; i++) {
- if (strcmp(functions[i].Name, funcName) == 0)
- return (void *) functions[i].Address;
+ else if (format==OSMESA_BGR) {
+ indexBits = 0;
+ redBits = CHAN_BITS;
+ greenBits = CHAN_BITS;
+ blueBits = CHAN_BITS;
+ alphaBits = 0;
+ rind = 2;
+ gind = 1;
+ bind = 0;
+ rgbmode = GL_TRUE;
}
- return (void *) _glapi_get_proc_address(funcName);
-}
-
-
-/**********************************************************************/
-/*** Device Driver Functions ***/
-/**********************************************************************/
-
-
-/*
- * Useful macros:
- */
-
-#if CHAN_TYPE == GL_FLOAT
-#define PACK_RGBA(DST, R, G, B, A) \
-do { \
- (DST)[0] = (R < 0.0f) ? 0.0f : ((R > 1.0f) ? 1.0f : R); \
- (DST)[1] = (G < 0.0f) ? 0.0f : ((G > 1.0f) ? 1.0f : G); \
- (DST)[2] = (B < 0.0f) ? 0.0f : ((B > 1.0f) ? 1.0f : B); \
- (DST)[3] = (A < 0.0f) ? 0.0f : ((A > 1.0f) ? 1.0f : A); \
-} while (0)
-#else
-#define PACK_RGBA(DST, R, G, B, A) \
-do { \
- (DST)[osmesa->rInd] = R; \
- (DST)[osmesa->gInd] = G; \
- (DST)[osmesa->bInd] = B; \
- (DST)[osmesa->aInd] = A; \
-} while (0)
-#endif
-
-#define PACK_RGB(DST, R, G, B) \
-do { \
- (DST)[0] = R; \
- (DST)[1] = G; \
- (DST)[2] = B; \
-} while (0)
-
-#define PACK_BGR(DST, R, G, B) \
-do { \
- (DST)[0] = B; \
- (DST)[1] = G; \
- (DST)[2] = R; \
-} while (0)
-
-#define PACK_RGB_565(DST, R, G, B) \
-do { \
- (DST) = (((int) (R) << 8) & 0xf800) | (((int) (G) << 3) & 0x7e0) | ((int) (B) >> 3);\
-} while (0)
-
-
-#define UNPACK_RED(P) ( (P)[osmesa->rInd] )
-#define UNPACK_GREEN(P) ( (P)[osmesa->gInd] )
-#define UNPACK_BLUE(P) ( (P)[osmesa->bInd] )
-#define UNPACK_ALPHA(P) ( (P)[osmesa->aInd] )
-
-
-#define PIXELADDR1(X,Y) (osmesa->rowaddr[Y] + (X))
-#define PIXELADDR2(X,Y) (osmesa->rowaddr[Y] + 2 * (X))
-#define PIXELADDR3(X,Y) (osmesa->rowaddr[Y] + 3 * (X))
-#define PIXELADDR4(X,Y) (osmesa->rowaddr[Y] + 4 * (X))
-
-
-
-static void set_draw_buffer( GLcontext *ctx, GLenum mode )
-{
- (void) ctx;
- (void) mode;
-}
-
-
-static void set_read_buffer( GLcontext *ctx, GLframebuffer *buffer, GLenum mode )
-{
- /* separate read buffer not supported */
- ASSERT(buffer == ctx->DrawBuffer);
- ASSERT(mode == GL_FRONT_LEFT);
-}
-
-
-static void clear( GLcontext *ctx, GLbitfield mask, GLboolean all,
- GLint x, GLint y, GLint width, GLint height )
-{
- OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask;
-
- /* sanity check - we only have a front-left buffer */
- ASSERT((mask & (DD_FRONT_RIGHT_BIT | DD_BACK_LEFT_BIT | DD_BACK_RIGHT_BIT)) == 0);
- if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) {
- if (mask & DD_FRONT_LEFT_BIT) {
- if (osmesa->format == OSMESA_COLOR_INDEX) {
- if (all) {
- /* Clear whole CI buffer */
#if CHAN_TYPE == GL_UNSIGNED_BYTE
- MEMSET(osmesa->buffer, ctx->Color.ClearIndex,
- osmesa->rowlength * osmesa->height);
-#else
- const GLint n = osmesa->rowlength * osmesa->height;
- GLchan *buffer = (GLchan *) osmesa->buffer;
- GLint i;
- for (i = 0; i < n; i ++) {
- buffer[i] = ctx->Color.ClearIndex;
- }
+ else if (format==OSMESA_RGB_565) {
+ indexBits = 0;
+ redBits = 5;
+ greenBits = 6;
+ blueBits = 5;
+ alphaBits = 0;
+ rind = 0; /* not used */
+ gind = 0;
+ bind = 0;
+ rgbmode = GL_TRUE;
+ }
#endif
- }
- else {
- /* Clear part of CI buffer */
- const GLchan clearIndex = (GLchan) ctx->Color.ClearIndex;
- GLint i, j;
- for (i = 0; i < height; i++) {
- GLchan *ptr1 = PIXELADDR1(x, (y + i));
- for (j = 0; j < width; j++) {
- *ptr1++ = clearIndex;
- }
- }
- }
- }
- else if (osmesa->format == OSMESA_RGB) {
- const GLchan r = ctx->Color.ClearColor[0];
- const GLchan g = ctx->Color.ClearColor[1];
- const GLchan b = ctx->Color.ClearColor[2];
- if (all) {
- /* Clear whole RGB buffer */
- GLuint n = osmesa->rowlength * osmesa->height;
- GLchan *ptr3 = (GLchan *) osmesa->buffer;
- GLuint i;
- for (i = 0; i < n; i++) {
- PACK_RGB(ptr3, r, g, b);
- ptr3 += 3;
- }
- }
- else {
- /* Clear part of RGB buffer */
- GLint i, j;
- for (i = 0; i < height; i++) {
- GLchan *ptr3 = PIXELADDR3(x, (y + i));
- for (j = 0; j < width; j++) {
- PACK_RGB(ptr3, r, g, b);
- ptr3 += 3;
- }
- }
- }
- }
- else if (osmesa->format == OSMESA_BGR) {
- const GLchan r = ctx->Color.ClearColor[0];
- const GLchan g = ctx->Color.ClearColor[1];
- const GLchan b = ctx->Color.ClearColor[2];
- if (all) {
- /* Clear whole RGB buffer */
- const GLint n = osmesa->rowlength * osmesa->height;
- GLchan *ptr3 = (GLchan *) osmesa->buffer;
- GLint i;
- for (i = 0; i < n; i++) {
- PACK_BGR(ptr3, r, g, b);
- ptr3 += 3;
- }
- }
- else {
- /* Clear part of RGB buffer */
- GLint i, j;
- for (i = 0; i < height; i++) {
- GLchan *ptr3 = PIXELADDR3(x, (y + i));
- for (j = 0; j < width; j++) {
- PACK_BGR(ptr3, r, g, b);
- ptr3 += 3;
- }
- }
- }
- }
- else if (osmesa->format == OSMESA_RGB_565) {
- const GLchan r = ctx->Color.ClearColor[0];
- const GLchan g = ctx->Color.ClearColor[1];
- const GLchan b = ctx->Color.ClearColor[2];
- GLushort clearPixel;
- PACK_RGB_565(clearPixel, r, g, b);
- if (all) {
- /* Clear whole RGB buffer */
- const GLuint n = osmesa->rowlength * osmesa->height;
- GLushort *ptr2 = (GLushort *) osmesa->buffer;
- GLuint i;
- for (i = 0; i < n; i++) {
- *ptr2 = clearPixel;
- ptr2++;
- }
- }
- else {
- /* clear scissored region */
- GLint i, j;
- for (i = 0; i < height; i++) {
- GLushort *ptr2 = (GLushort *) PIXELADDR2(x, (y + i));
- for (j = 0; j < width; j++) {
- *ptr2 = clearPixel;
- ptr2++;
- }
- }
- }
- }
- else {
-#if CHAN_TYPE == GL_UNSIGNED_BYTE
- /* 4-byte pixel value */
- GLuint clearPixel;
- GLchan *clr = (GLchan *) &clearPixel;
- clr[osmesa->rInd] = ctx->Color.ClearColor[0];
- clr[osmesa->gInd] = ctx->Color.ClearColor[1];
- clr[osmesa->bInd] = ctx->Color.ClearColor[2];
- clr[osmesa->aInd] = ctx->Color.ClearColor[3];
- if (all) {
- /* Clear whole RGBA buffer */
- const GLuint n = osmesa->rowlength * osmesa->height;
- GLuint *ptr4 = (GLuint *) osmesa->buffer;
- GLuint i;
- if (clearPixel) {
- for (i = 0; i < n; i++) {
- *ptr4++ = clearPixel;
- }
- }
- else {
- BZERO(ptr4, n * sizeof(GLuint));
- }
- }
- else {
- /* Clear part of RGBA buffer */
- GLint i, j;
- for (i = 0; i < height; i++) {
- GLuint *ptr4 = (GLuint *) PIXELADDR4(x, (y + i));
- for (j = 0; j < width; j++) {
- *ptr4++ = clearPixel;
- }
- }
- }
-#else
- const GLchan r = ctx->Color.ClearColor[0];
- const GLchan g = ctx->Color.ClearColor[1];
- const GLchan b = ctx->Color.ClearColor[2];
- const GLchan a = ctx->Color.ClearColor[3];
- if (all) {
- /* Clear whole RGBA buffer */
- const GLuint n = osmesa->rowlength * osmesa->height;
- GLchan *p = (GLchan *) osmesa->buffer;
- GLuint i;
- for (i = 0; i < n; i++) {
- PACK_RGBA(p, r, g, b, a);
- p += 4;
- }
- }
- else {
- /* Clear part of RGBA buffer */
- GLint i, j;
- for (i = 0; i < height; i++) {
- GLchan *p = PIXELADDR4(x, (y + i));
- for (j = 0; j < width; j++) {
- PACK_RGBA(p, r, g, b, a);
- p += 4;
- }
- }
- }
+ else {
+ return NULL;
+ }
-#endif
- }
- mask &= ~DD_FRONT_LEFT_BIT;
+ osmesa = (OSMesaContext) CALLOC_STRUCT(osmesa_context);
+ if (osmesa) {
+ osmesa->gl_visual = _mesa_create_visual( rgbmode,
+ GL_FALSE, /* double buffer */
+ GL_FALSE, /* stereo */
+ redBits,
+ greenBits,
+ blueBits,
+ alphaBits,
+ indexBits,
+ depthBits,
+ stencilBits,
+ accumBits,
+ accumBits,
+ accumBits,
+ alphaBits ? accumBits : 0,
+ 1 /* num samples */
+ );
+ if (!osmesa->gl_visual) {
+ _mesa_free(osmesa);
+ return NULL;
}
- }
-
- if (mask)
- _swrast_Clear( ctx, mask, all, x, y, width, height );
-}
+ /* Initialize device driver function table */
+ _mesa_init_driver_functions(&functions);
+ /* override with our functions */
+ functions.GetString = get_string;
+ functions.UpdateState = osmesa_update_state;
+ functions.GetBufferSize = NULL;
+
+ if (!_mesa_initialize_context(&osmesa->mesa,
+ osmesa->gl_visual,
+ sharelist ? &sharelist->mesa
+ : (GLcontext *) NULL,
+ &functions, (void *) osmesa)) {
+ _mesa_destroy_visual( osmesa->gl_visual );
+ _mesa_free(osmesa);
+ return NULL;
+ }
+ _mesa_enable_sw_extensions(&(osmesa->mesa));
+ _mesa_enable_1_3_extensions(&(osmesa->mesa));
+ _mesa_enable_1_4_extensions(&(osmesa->mesa));
+ _mesa_enable_1_5_extensions(&(osmesa->mesa));
+ _mesa_enable_2_0_extensions(&(osmesa->mesa));
+ _mesa_enable_2_1_extensions(&(osmesa->mesa));
-static void buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height )
-{
- /* don't use GET_CURRENT_CONTEXT(ctx) here - it's a problem on Windows */
- GLcontext *ctx = (GLcontext *) _glapi_get_context();
- (void) buffer;
- if (ctx) {
- OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- *width = osmesa->width;
- *height = osmesa->height;
- }
-}
+ osmesa->gl_buffer = _mesa_create_framebuffer(osmesa->gl_visual);
+ if (!osmesa->gl_buffer) {
+ _mesa_destroy_visual( osmesa->gl_visual );
+ _mesa_free_context_data( &osmesa->mesa );
+ _mesa_free(osmesa);
+ return NULL;
+ }
+ /* create front color buffer in user-provided memory (no back buffer) */
+ osmesa->rb = new_osmesa_renderbuffer(&osmesa->mesa, format, type);
+ _mesa_add_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT, osmesa->rb);
+ assert(osmesa->rb->RefCount == 2);
+
+ _mesa_add_soft_renderbuffers(osmesa->gl_buffer,
+ GL_FALSE, /* color */
+ osmesa->gl_visual->haveDepthBuffer,
+ osmesa->gl_visual->haveStencilBuffer,
+ osmesa->gl_visual->haveAccumBuffer,
+ GL_FALSE, /* alpha */
+ GL_FALSE /* aux */ );
-/**********************************************************************/
-/***** Read/write spans/arrays of RGBA pixels *****/
-/**********************************************************************/
+ osmesa->format = format;
+ osmesa->userRowLength = 0;
+ osmesa->yup = GL_TRUE;
+ osmesa->rInd = rind;
+ osmesa->gInd = gind;
+ osmesa->bInd = bind;
+ osmesa->aInd = aind;
-/* Write RGBA pixels to an RGBA (or permuted) buffer. */
-static void
-write_rgba_span( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- CONST GLchan rgba[][4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLchan *p = PIXELADDR4(x, y);
- GLuint i;
- if (mask) {
- for (i = 0; i < n; i++, p += 4) {
- if (mask[i]) {
- PACK_RGBA(p, rgba[i][RCOMP], rgba[i][GCOMP],
- rgba[i][BCOMP], rgba[i][ACOMP]);
+ /* Initialize the software rasterizer and helper modules. */
+ {
+ GLcontext *ctx = &osmesa->mesa;
+ SWcontext *swrast;
+ TNLcontext *tnl;
+
+ if (!_swrast_CreateContext( ctx ) ||
+ !_vbo_CreateContext( ctx ) ||
+ !_tnl_CreateContext( ctx ) ||
+ !_swsetup_CreateContext( ctx )) {
+ _mesa_destroy_visual(osmesa->gl_visual);
+ _mesa_free_context_data(ctx);
+ _mesa_free(osmesa);
+ return NULL;
}
- }
- }
- else {
- for (i = 0; i < n; i++, p += 4) {
- PACK_RGBA(p, rgba[i][RCOMP], rgba[i][GCOMP],
- rgba[i][BCOMP], rgba[i][ACOMP]);
- }
- }
-}
+
+ _swsetup_Wakeup( ctx );
+ /* use default TCL pipeline */
+ tnl = TNL_CONTEXT(ctx);
+ tnl->Driver.RunPipeline = _tnl_run_pipeline;
-/* Write RGBA pixels to an RGBA buffer. This is the fastest span-writer. */
-static void
-write_rgba_span_rgba( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- CONST GLchan rgba[][4], const GLubyte mask[] )
-{
- OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint *ptr4 = (GLuint *) PIXELADDR4(x, y);
- const GLuint *rgba4 = (const GLuint *) rgba;
- GLuint i;
- ASSERT(CHAN_TYPE == GL_UNSIGNED_BYTE);
- if (mask) {
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- ptr4[i] = rgba4[i];
- }
- }
- }
- else {
- MEMCPY( ptr4, rgba4, n * 4 );
- }
-}
-
-
-/* Write RGB pixels to an RGBA (or permuted) buffer. */
-static void
-write_rgb_span( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- CONST GLchan rgb[][3], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLchan *p = PIXELADDR4(x, y);
- GLuint i;
- if (mask) {
- for (i = 0; i < n; i++, p+=4) {
- if (mask[i]) {
- PACK_RGBA(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP], CHAN_MAX);
- }
- }
- }
- else {
- for (i = 0; i < n; i++, p+=4) {
- PACK_RGBA(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP], CHAN_MAX);
- }
- }
-}
-
-
-
-static void
-write_monocolor_span( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLchan color[4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLchan *p = PIXELADDR4(x, y);
- GLuint i;
- for (i = 0; i < n; i++, p += 4) {
- if (mask[i]) {
- PACK_RGBA(p, color[RCOMP], color[GCOMP], color[BCOMP], color[ACOMP]);
- }
- }
-}
-
-
-
-static void
-write_rgba_pixels( const GLcontext *ctx, GLuint n,
- const GLint x[], const GLint y[],
- CONST GLchan rgba[][4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- GLchan *p = PIXELADDR4(x[i], y[i]);
- PACK_RGBA(p, rgba[i][RCOMP], rgba[i][GCOMP],
- rgba[i][BCOMP], rgba[i][ACOMP]);
- }
- }
-}
-
-
-
-static void
-write_monocolor_pixels( const GLcontext *ctx, GLuint n,
- const GLint x[], const GLint y[],
- const GLchan color[4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- GLchan *p = PIXELADDR4(x[i], y[i]);
- PACK_RGBA(p, color[RCOMP], color[GCOMP], color[BCOMP], color[ACOMP]);
- }
- }
-}
-
-
-static void
-read_rgba_span( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- GLchan rgba[][4] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- GLchan *p = PIXELADDR4(x, y);
- for (i = 0; i < n; i++, p += 4) {
- rgba[i][RCOMP] = UNPACK_RED(p);
- rgba[i][GCOMP] = UNPACK_GREEN(p);
- rgba[i][BCOMP] = UNPACK_BLUE(p);
- rgba[i][ACOMP] = UNPACK_ALPHA(p);
- }
-}
-
-
-/* Read RGBA pixels from an RGBA buffer */
-static void
-read_rgba_span_rgba( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- GLchan rgba[][4] )
-{
- OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint *ptr4 = (GLuint *) PIXELADDR4(x, y);
- MEMCPY( rgba, ptr4, n * 4 * sizeof(GLchan) );
-}
-
-
-static void
-read_rgba_pixels( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- GLchan rgba[][4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- const GLchan *p = PIXELADDR4(x[i], y[i]);
- rgba[i][RCOMP] = UNPACK_RED(p);
- rgba[i][GCOMP] = UNPACK_GREEN(p);
- rgba[i][BCOMP] = UNPACK_BLUE(p);
- rgba[i][ACOMP] = UNPACK_ALPHA(p);
- }
- }
-}
-
-/**********************************************************************/
-/***** 3 byte RGB pixel support funcs *****/
-/**********************************************************************/
-
-/* Write RGBA pixels to an RGB buffer. */
-static void
-write_rgba_span_RGB( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- CONST GLchan rgba[][4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLchan *p = PIXELADDR3(x, y);
- GLuint i;
- if (mask) {
- for (i = 0; i < n; i++, p += 3) {
- if (mask[i]) {
- PACK_RGB(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
- }
- }
- }
- else {
- for (i = 0; i < n; i++, p += 3) {
- PACK_RGB(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
- }
- }
-}
-
-/* Write RGBA pixels to an BGR buffer. */
-static void
-write_rgba_span_BGR( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- CONST GLchan rgba[][4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLchan *p = PIXELADDR3(x, y);
- GLuint i;
- if (mask) {
- for (i = 0; i < n; i++, p += 3) {
- if (mask[i]) {
- PACK_BGR(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
- }
- }
- }
- else {
- for (i = 0; i < n; i++, p += 3) {
- PACK_BGR(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
- }
- }
-}
-
-/* Write RGB pixels to an RGB buffer. */
-static void
-write_rgb_span_RGB( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- CONST GLchan rgb[][3], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLchan *p = PIXELADDR3(x, y);
- GLuint i;
- if (mask) {
- for (i = 0; i < n; i++, p += 3) {
- if (mask[i]) {
- PACK_RGB(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]);
- }
- }
- }
- else {
- for (i = 0; i < n; i++, p += 3) {
- PACK_RGB(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]);
- }
- }
-}
-
-/* Write RGB pixels to an BGR buffer. */
-static void
-write_rgb_span_BGR( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- CONST GLchan rgb[][3], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLchan *p = PIXELADDR3(x, y);
- GLuint i;
- if (mask) {
- for (i = 0; i < n; i++, p += 3) {
- if (mask[i]) {
- PACK_BGR(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]);
- }
- }
- }
- else {
- for (i = 0; i < n; i++, p += 3) {
- PACK_BGR(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]);
- }
- }
-}
-
-
-static void
-write_monocolor_span_RGB( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLchan color[4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLchan *p = PIXELADDR3(x, y);
- GLuint i;
- for (i = 0; i < n; i++, p += 3) {
- if (mask[i]) {
- PACK_RGB(p, color[RCOMP], color[GCOMP], color[BCOMP]);
- }
- }
-}
-
-static void
-write_monocolor_span_BGR( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLchan color[4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLchan *p = PIXELADDR3(x, y);
- GLuint i;
- for (i = 0; i < n; i++, p += 3) {
- if (mask[i]) {
- PACK_BGR(p, color[RCOMP], color[GCOMP], color[BCOMP]);
- }
- }
-}
-
-static void
-write_rgba_pixels_RGB( const GLcontext *ctx, GLuint n,
- const GLint x[], const GLint y[],
- CONST GLchan rgba[][4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = (const OSMesaContext) ctx;
- GLuint i;
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- GLchan *p = PIXELADDR3(x[i], y[i]);
- PACK_RGB(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
- }
- }
-}
-
-static void
-write_rgba_pixels_BGR( const GLcontext *ctx, GLuint n,
- const GLint x[], const GLint y[],
- CONST GLchan rgba[][4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = (const OSMesaContext) ctx;
- GLuint i;
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- GLchan *p = PIXELADDR3(x[i], y[i]);
- PACK_BGR(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
- }
- }
-}
-
-static void
-write_monocolor_pixels_RGB( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- const GLchan color[4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- GLchan *p = PIXELADDR3(x[i], y[i]);
- PACK_RGB(p, color[RCOMP], color[GCOMP], color[BCOMP]);
- }
- }
-}
-
-static void
-write_monocolor_pixels_BGR( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- const GLchan color[4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- GLchan *p = PIXELADDR3(x[i], y[i]);
- PACK_BGR(p, color[RCOMP], color[GCOMP], color[BCOMP]);
- }
- }
-}
-
-static void
-read_rgba_span3( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- GLchan rgba[][4] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- const GLchan *p = PIXELADDR3(x, y);
- for (i = 0; i < n; i++, p += 3) {
- rgba[i][RCOMP] = UNPACK_RED(p);
- rgba[i][GCOMP] = UNPACK_GREEN(p);
- rgba[i][BCOMP] = UNPACK_BLUE(p);
- rgba[i][ACOMP] = CHAN_MAX;
- }
-}
-
-static void
-read_rgba_pixels3( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- GLchan rgba[][4], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- const GLchan *p = PIXELADDR3(x[i], y[i]);
- rgba[i][RCOMP] = UNPACK_RED(p);
- rgba[i][GCOMP] = UNPACK_GREEN(p);
- rgba[i][BCOMP] = UNPACK_BLUE(p);
- rgba[i][ACOMP] = CHAN_MAX;
- }
- }
-}
-
-
-/**********************************************************************/
-/***** 2 byte RGB pixel support funcs *****/
-/**********************************************************************/
-
-/* Write RGBA pixels to an RGB_565 buffer. */
-static void
-write_rgba_span2( const GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- CONST GLchan rgba[][4], const GLubyte mask[] )
-{
- OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLushort *ptr2 = (GLushort *) PIXELADDR2(x, y);
- GLuint i;
- if (mask) {
- for (i = 0; i < n; i++, ptr2++) {
- if (mask[i]) {
- PACK_RGB_565(*ptr2, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
- }
- }
- }
- else {
- for (i = 0; i < n; i++, ptr2++) {
- PACK_RGB_565(*ptr2, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
- }
- }
-}
-
-
-/* Write RGB pixels to an RGB_565 buffer. */
-static void
-write_rgb_span2( const GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- CONST GLchan rgb[][3], const GLubyte mask[] )
-{
- OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLushort *ptr2 = (GLushort *) PIXELADDR2(x, y);
- GLuint i;
- if (mask) {
- for (i = 0; i < n; i++, ptr2++) {
- if (mask[i]) {
- PACK_RGB_565(*ptr2, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]);
- }
- }
- }
- else {
- for (i = 0; i < n; i++, ptr2++) {
- PACK_RGB_565(*ptr2, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]);
- }
- }
-}
-
-
-static void
-write_monocolor_span2( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLchan color[4], const GLubyte mask[] )
-{
- OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLushort pixel;
- GLushort *ptr2 = (GLushort *) PIXELADDR2(x, y);
- GLuint i;
- PACK_RGB_565(pixel, color[RCOMP], color[GCOMP], color[BCOMP]);
- for (i = 0; i < n; i++, ptr2++) {
- if (mask[i]) {
- *ptr2 = pixel;
- }
- }
-}
-
-
-static void
-write_rgba_pixels2( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- CONST GLchan rgba[][4], const GLubyte mask[] )
-{
- OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- GLushort *ptr2 = (GLushort *) PIXELADDR2(x[i],y[i]);
- PACK_RGB_565(*ptr2, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
- }
- }
-}
-
-static void
-write_monocolor_pixels2( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- const GLchan color[4], const GLubyte mask[] )
-{
- OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- GLushort pixel;
- PACK_RGB_565(pixel, color[RCOMP], color[GCOMP], color[BCOMP]);
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- GLushort *ptr2 = (GLushort *) PIXELADDR2(x[i],y[i]);
- *ptr2 = pixel;
- }
- }
-}
-
-static void
-read_rgba_span2( const GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- GLchan rgba[][4] )
-{
- OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- const GLushort *ptr2 = (const GLushort *) PIXELADDR2(x, y);
- for (i = 0; i < n; i++, ptr2++) {
- /* This should be fixed to get the low bits right */
- rgba[i][RCOMP] = (*ptr2 >> 8) & 0xFe;
- rgba[i][GCOMP] = (*ptr2 >> 3) & 0xFc;
- rgba[i][BCOMP] = (*ptr2 << 3) & 0xFe;
- rgba[i][ACOMP] = 0;
- }
-}
-
-static void
-read_rgba_pixels2( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- GLchan rgba[][4], const GLubyte mask[] )
-{
- OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- /* This should be fixed to get the low bits right */
- const GLushort *ptr2 = (const GLushort *) PIXELADDR2(x[i],y[i]);
- rgba[i][RCOMP] = (*ptr2 >> 8) & 0xFE;
- rgba[i][GCOMP] = (*ptr2 >> 3) & 0xFC;
- rgba[i][BCOMP] = (*ptr2 << 3) & 0xFE;
- rgba[i][ACOMP] = 0;
- }
- }
-}
-
-
-
-/**********************************************************************/
-/***** Read/write spans/arrays of CI pixels *****/
-/**********************************************************************/
-
-/* Write 32-bit color index to buffer */
-static void
-write_index32_span( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLuint index[], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLchan *ptr1 = PIXELADDR1(x, y);
- GLuint i;
- if (mask) {
- for (i=0;i<n;i++,ptr1++) {
- if (mask[i]) {
- *ptr1 = (GLchan) index[i];
- }
- }
- }
- else {
- for (i=0;i<n;i++,ptr1++) {
- *ptr1 = (GLchan) index[i];
- }
- }
-}
-
-
-/* Write 8-bit color index to buffer */
-static void
-write_index8_span( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLubyte index[], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLchan *ptr1 = PIXELADDR1(x, y);
- GLuint i;
- if (mask) {
- for (i=0;i<n;i++,ptr1++) {
- if (mask[i]) {
- *ptr1 = (GLchan) index[i];
- }
- }
- }
- else {
- MEMCPY(ptr1, index, n * sizeof(GLchan));
- }
-}
-
-
-static void
-write_monoindex_span( const GLcontext *ctx, GLuint n, GLint x, GLint y,
- GLuint colorIndex, const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLchan *ptr1 = PIXELADDR1(x, y);
- GLuint i;
- for (i=0;i<n;i++,ptr1++) {
- if (mask[i]) {
- *ptr1 = (GLchan) colorIndex;
- }
- }
-}
-
-
-static void
-write_index_pixels( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- const GLuint index[], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- for (i=0;i<n;i++) {
- if (mask[i]) {
- GLchan *ptr1 = PIXELADDR1(x[i], y[i]);
- *ptr1 = (GLchan) index[i];
- }
- }
-}
-
-
-static void
-write_monoindex_pixels( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- GLuint colorIndex, const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- for (i=0;i<n;i++) {
- if (mask[i]) {
- GLchan *ptr1 = PIXELADDR1(x[i], y[i]);
- *ptr1 = (GLchan) colorIndex;
- }
- }
-}
-
-
-static void
-read_index_span( const GLcontext *ctx,
- GLuint n, GLint x, GLint y, GLuint index[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- const GLchan *ptr1 = (const GLchan *) PIXELADDR1(x, y);
- for (i=0;i<n;i++,ptr1++) {
- index[i] = (GLuint) *ptr1;
- }
-}
-
-
-static void
-read_index_pixels( const GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- GLuint index[], const GLubyte mask[] )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- GLuint i;
- for (i=0;i<n;i++) {
- if (mask[i] ) {
- const GLchan *ptr1 = PIXELADDR1(x[i], y[i]);
- index[i] = (GLuint) *ptr1;
+ /* Extend the software rasterizer with our optimized line and triangle
+ * drawing functions.
+ */
+ swrast = SWRAST_CONTEXT( ctx );
+ swrast->choose_line = osmesa_choose_line;
+ swrast->choose_triangle = osmesa_choose_triangle;
}
}
-}
-
-
-
-/**********************************************************************/
-/***** Optimized line rendering *****/
-/**********************************************************************/
-
-
-/*
- * Draw a flat-shaded, RGB line into an osmesa buffer.
- */
-static void
-flat_rgba_line( GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1 )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- const GLchan *color = vert1->color;
-
-#define INTERP_XY 1
-#define CLIP_HACK 1
-#define PLOT(X, Y) \
-do { \
- GLchan *p = PIXELADDR4(X, Y); \
- PACK_RGBA(p, color[0], color[1], color[2], color[3]); \
-} while (0)
-
-#ifdef WIN32
-#include "..\swrast\s_linetemp.h"
-#else
-#include "swrast/s_linetemp.h"
-#endif
-}
-
-
-/*
- * Draw a flat-shaded, Z-less, RGB line into an osmesa buffer.
- */
-static void
-flat_rgba_z_line(GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1)
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- const GLchan *color = vert1->color;
-
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-#define CLIP_HACK 1
-#define PLOT(X, Y) \
-do { \
- if (Z < *zPtr) { \
- GLchan *p = PIXELADDR4(X, Y); \
- PACK_RGBA(p, color[RCOMP], color[GCOMP], \
- color[BCOMP], color[ACOMP]); \
- *zPtr = Z; \
- } \
-} while (0)
-
-
-#ifdef WIN32
-#include "..\swrast\s_linetemp.h"
-#else
-#include "swrast/s_linetemp.h"
-#endif
-}
-
-
-/*
- * Draw a flat-shaded, alpha-blended, RGB line into an osmesa buffer.
- * XXX update for GLchan
- */
-static void
-flat_blend_rgba_line( GLcontext *ctx,
- const SWvertex *vert0, const SWvertex *vert1 )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- const GLint rshift = osmesa->rshift;
- const GLint gshift = osmesa->gshift;
- const GLint bshift = osmesa->bshift;
- const GLint avalue = vert0->color[3];
- const GLint msavalue = CHAN_MAX - avalue;
- const GLint rvalue = vert1->color[0]*avalue;
- const GLint gvalue = vert1->color[1]*avalue;
- const GLint bvalue = vert1->color[2]*avalue;
-
-#define INTERP_XY 1
-#define CLIP_HACK 1
-#define PLOT(X,Y) \
- { GLuint *ptr4 = (GLuint *) PIXELADDR4(X, Y); \
- GLuint pixel = 0; \
- pixel |=((((((*ptr4) >> rshift) & 0xff)*msavalue+rvalue)>>8) << rshift);\
- pixel |=((((((*ptr4) >> gshift) & 0xff)*msavalue+gvalue)>>8) << gshift);\
- pixel |=((((((*ptr4) >> bshift) & 0xff)*msavalue+bvalue)>>8) << bshift);\
- *ptr4 = pixel; \
- }
-
-#if 0 /* XXX use this in the future */
-#define PLOT(X,Y) \
- { \
- GLchan *pixel = (GLchan *) PIXELADDR4(X, Y); \
- pixel[rInd] = (pixel[rInd] * msavalue + rvalue) >> CHAN_BITS; \
- pixel[gInd] = (pixel[gInd] * msavalue + gvalue) >> CHAN_BITS; \
- pixel[bInd] = (pixel[bInd] * msavalue + bvalue) >> CHAN_BITS; \
- pixel[aInd] = (pixel[aInd] * msavalue + avalue) >> CHAN_BITS; \
- }
-#endif
-
-#ifdef WIN32
-#include "..\swrast\s_linetemp.h"
-#else
-#include "swrast/s_linetemp.h"
-#endif
-}
-
-
-/*
- * Draw a flat-shaded, Z-less, alpha-blended, RGB line into an osmesa buffer.
- * But don't write to Z buffer.
- * XXX update for GLchan
- */
-static void
-flat_blend_rgba_z_line( GLcontext *ctx,
- const SWvertex *vert0, const SWvertex *vert1 )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- const GLint rshift = osmesa->rshift;
- const GLint gshift = osmesa->gshift;
- const GLint bshift = osmesa->bshift;
- const GLint avalue = vert0->color[3];
- const GLint msavalue = 256 - avalue;
- const GLint rvalue = vert1->color[0]*avalue;
- const GLint gvalue = vert1->color[1]*avalue;
- const GLint bvalue = vert1->color[2]*avalue;
-
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-#define CLIP_HACK 1
-#define PLOT(X,Y) \
- if (Z < *zPtr) { \
- GLuint *ptr4 = (GLuint *) PIXELADDR4(X, Y); \
- GLuint pixel = 0; \
- pixel |=((((((*ptr4) >> rshift) & 0xff)*msavalue+rvalue)>>8) << rshift); \
- pixel |=((((((*ptr4) >> gshift) & 0xff)*msavalue+gvalue)>>8) << gshift); \
- pixel |=((((((*ptr4) >> bshift) & 0xff)*msavalue+bvalue)>>8) << bshift); \
- *ptr4 = pixel; \
- }
-
-#if 0 /* XXX use this in the future */
-#define PLOT(X,Y) \
- if (Z < *zPtr) { \
- GLchan *pixel = (GLchan *) PIXELADDR4(X, Y); \
- pixel[rInd] = (pixel[rInd] * msavalue + rvalue) >> CHAN_BITS; \
- pixel[gInd] = (pixel[gInd] * msavalue + gvalue) >> CHAN_BITS; \
- pixel[bInd] = (pixel[bInd] * msavalue + bvalue) >> CHAN_BITS; \
- pixel[aInd] = (pixel[aInd] * msavalue + avalue) >> CHAN_BITS; \
- }
-#endif
-
-#ifdef WIN32
-#include "..\swrast\s_linetemp.h"
-#else
-#include "swrast/s_linetemp.h"
-#endif
-}
-
-
-/*
- * Draw a flat-shaded, Z-less, alpha-blended, RGB line into an osmesa buffer.
- * XXX update for GLchan
- */
-static void
-flat_blend_rgba_z_line_write( GLcontext *ctx,
- const SWvertex *vert0, const SWvertex *vert1 )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- const GLint rshift = osmesa->rshift;
- const GLint gshift = osmesa->gshift;
- const GLint bshift = osmesa->bshift;
- const GLint avalue = vert0->color[3];
- const GLint msavalue = 256 - avalue;
- const GLint rvalue = vert1->color[0]*avalue;
- const GLint gvalue = vert1->color[1]*avalue;
- const GLint bvalue = vert1->color[2]*avalue;
-
-#define INTERP_XY 1
-#define INTERP_Z 1
-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-#define CLIP_HACK 1
-#define PLOT(X,Y) \
- if (Z < *zPtr) { \
- GLuint *ptr4 = (GLuint *) PIXELADDR4(X, Y); \
- GLuint pixel = 0; \
- pixel |=((((((*ptr4) >> rshift) & 0xff)*msavalue+rvalue)>>8) << rshift); \
- pixel |=((((((*ptr4) >> gshift) & 0xff)*msavalue+gvalue)>>8) << gshift); \
- pixel |=((((((*ptr4) >> bshift) & 0xff)*msavalue+bvalue)>>8) << bshift); \
- *ptr4 = pixel; \
- *zPtr = Z; \
- }
-
-#if 0 /* XXX use this in the future */
-#define PLOT(X,Y) \
- if (Z < *zPtr) { \
- GLchan *pixel = (GLchan *) PIXELADDR4(X, Y); \
- pixel[rInd] = (pixel[rInd] * msavalue + rvalue) >> CHAN_BITS; \
- pixel[gInd] = (pixel[gInd] * msavalue + gvalue) >> CHAN_BITS; \
- pixel[bInd] = (pixel[bInd] * msavalue + bvalue) >> CHAN_BITS; \
- pixel[aInd] = (pixel[aInd] * msavalue + avalue) >> CHAN_BITS; \
- *zPtr = Z; \
- }
-#endif
-
-#ifdef WIN32
-#include "..\swrast\s_linetemp.h"
-#else
-#include "swrast/s_linetemp.h"
-#endif
-}
-
-
-/*
- * Analyze context state to see if we can provide a fast line drawing
- * function, like those in lines.c. Otherwise, return NULL.
- */
-static swrast_line_func
-osmesa_choose_line_function( GLcontext *ctx )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- const SWcontext *swrast = SWRAST_CONTEXT(ctx);
-
- if (CHAN_BITS != 8) return NULL;
- if (ctx->RenderMode != GL_RENDER) return NULL;
- if (ctx->Line.SmoothFlag) return NULL;
- if (ctx->Texture._EnabledUnits) return NULL;
- if (ctx->Light.ShadeModel != GL_FLAT) return NULL;
- if (ctx->Line.Width != 1.0F) return NULL;
- if (ctx->Line.StippleFlag) return NULL;
- if (ctx->Line.SmoothFlag) return NULL;
- if (osmesa->format != OSMESA_RGBA &&
- osmesa->format != OSMESA_BGRA &&
- osmesa->format != OSMESA_ARGB) return NULL;
-
- if (swrast->_RasterMask==DEPTH_BIT
- && ctx->Depth.Func==GL_LESS
- && ctx->Depth.Mask==GL_TRUE
- && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) {
- return (swrast_line_func) flat_rgba_z_line;
- }
-
- if (swrast->_RasterMask == 0) {
- return (swrast_line_func) flat_rgba_line;
- }
-
- if (swrast->_RasterMask==(DEPTH_BIT|BLEND_BIT)
- && ctx->Depth.Func==GL_LESS
- && ctx->Depth.Mask==GL_TRUE
- && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS
- && ctx->Color.BlendSrcRGB==GL_SRC_ALPHA
- && ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA
- && ctx->Color.BlendSrcA==GL_SRC_ALPHA
- && ctx->Color.BlendDstA==GL_ONE_MINUS_SRC_ALPHA
- && ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) {
- return (swrast_line_func) flat_blend_rgba_z_line_write;
- }
-
- if (swrast->_RasterMask==(DEPTH_BIT|BLEND_BIT)
- && ctx->Depth.Func==GL_LESS
- && ctx->Depth.Mask==GL_FALSE
- && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS
- && ctx->Color.BlendSrcRGB==GL_SRC_ALPHA
- && ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA
- && ctx->Color.BlendSrcA==GL_SRC_ALPHA
- && ctx->Color.BlendDstA==GL_ONE_MINUS_SRC_ALPHA
- && ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) {
- return (swrast_line_func) flat_blend_rgba_z_line;
- }
+ return osmesa;
+}
- if (swrast->_RasterMask==BLEND_BIT
- && ctx->Color.BlendSrcRGB==GL_SRC_ALPHA
- && ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA
- && ctx->Color.BlendSrcA==GL_SRC_ALPHA
- && ctx->Color.BlendDstA==GL_ONE_MINUS_SRC_ALPHA
- && ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) {
- return (swrast_line_func) flat_blend_rgba_line;
- }
- return (swrast_line_func) NULL;
-}
+/**
+ * Destroy an Off-Screen Mesa rendering context.
+ *
+ * \param osmesa the context to destroy
+ */
+GLAPI void GLAPIENTRY
+OSMesaDestroyContext( OSMesaContext osmesa )
+{
+ if (osmesa) {
+ if (osmesa->rb)
+ _mesa_reference_renderbuffer(&osmesa->rb, NULL);
+ _swsetup_DestroyContext( &osmesa->mesa );
+ _tnl_DestroyContext( &osmesa->mesa );
+ _vbo_DestroyContext( &osmesa->mesa );
+ _swrast_DestroyContext( &osmesa->mesa );
-/**********************************************************************/
-/***** Optimized triangle rendering *****/
-/**********************************************************************/
+ _mesa_destroy_visual( osmesa->gl_visual );
+ _mesa_unreference_framebuffer( &osmesa->gl_buffer );
+ _mesa_free_context_data( &osmesa->mesa );
+ _mesa_free( osmesa );
+ }
+}
-/*
- * Smooth-shaded, z-less triangle, RGBA color.
+
+/**
+ * Bind an OSMesaContext to an image buffer. The image buffer is just a
+ * block of memory which the client provides. Its size must be at least
+ * as large as width*height*sizeof(type). Its address should be a multiple
+ * of 4 if using RGBA mode.
+ *
+ * Image data is stored in the order of glDrawPixels: row-major order
+ * with the lower-left image pixel stored in the first array position
+ * (ie. bottom-to-top).
+ *
+ * If the context's viewport hasn't been initialized yet, it will now be
+ * initialized to (0,0,width,height).
+ *
+ * Input: osmesa - the rendering context
+ * buffer - the image buffer memory
+ * type - data type for pixel components
+ * Normally, only GL_UNSIGNED_BYTE and GL_UNSIGNED_SHORT_5_6_5
+ * are supported. But if Mesa's been compiled with CHAN_BITS==16
+ * then type may be GL_UNSIGNED_SHORT or GL_UNSIGNED_BYTE. And if
+ * Mesa's been build with CHAN_BITS==32 then type may be GL_FLOAT,
+ * GL_UNSIGNED_SHORT or GL_UNSIGNED_BYTE.
+ * width, height - size of image buffer in pixels, at least 1
+ * Return: GL_TRUE if success, GL_FALSE if error because of invalid osmesa,
+ * invalid buffer address, invalid type, width<1, height<1,
+ * width>internal limit or height>internal limit.
*/
-static void smooth_rgba_z_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
+GLAPI GLboolean GLAPIENTRY
+OSMesaMakeCurrent( OSMesaContext osmesa, void *buffer, GLenum type,
+ GLsizei width, GLsizei height )
{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+ if (!osmesa || !buffer ||
+ width < 1 || height < 1 ||
+ width > MAX_WIDTH || height > MAX_HEIGHT) {
+ return GL_FALSE;
+ }
-#define INTERP_Z 1
-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-#define INTERP_RGB 1
-#define INTERP_ALPHA 1
-#define RENDER_SPAN( span ) \
- GLuint i; \
- GLchan *img = PIXELADDR4(span->x, span->y); \
- for (i = 0; i < span->end; i++, img += 4) { \
- const GLdepth z = FixedToDepth(span->z); \
- if (z < zRow[i]) { \
- PACK_RGBA(img, FixedToChan(span->red), \
- FixedToChan(span->green), FixedToChan(span->blue), \
- FixedToChan(span->alpha)); \
- zRow[i] = z; \
- } \
- span->red += span->redStep; \
- span->green += span->greenStep; \
- span->blue += span->blueStep; \
- span->alpha += span->alphaStep; \
- span->z += span->zStep; \
+ if (osmesa->format == OSMESA_RGB_565 && type != GL_UNSIGNED_SHORT_5_6_5) {
+ return GL_FALSE;
}
-#ifdef WIN32
-#include "..\swrast\s_tritemp.h"
-#else
-#include "swrast/s_tritemp.h"
+#if 0
+ if (!(type == GL_UNSIGNED_BYTE ||
+ (type == GL_UNSIGNED_SHORT && CHAN_BITS >= 16) ||
+ (type == GL_FLOAT && CHAN_BITS == 32))) {
+ /* i.e. is sizeof(type) * 8 > CHAN_BITS? */
+ return GL_FALSE;
+ }
#endif
-}
-
+ osmesa_update_state( &osmesa->mesa, 0 );
+ /* Call this periodically to detect when the user has begun using
+ * GL rendering from multiple threads.
+ */
+ _glapi_check_multithread();
-/*
- * Flat-shaded, z-less triangle, RGBA color.
- */
-static void flat_rgba_z_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
-#define INTERP_Z 1
-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-#define SETUP_CODE \
- GLuint pixel; \
- PACK_RGBA((GLchan *) &pixel, v2->color[0], v2->color[1], \
- v2->color[2], v2->color[3]);
+ /* Set renderbuffer fields. Set width/height = 0 to force
+ * osmesa_renderbuffer_storage() being called by _mesa_resize_framebuffer()
+ */
+ osmesa->rb->Data = buffer;
+ osmesa->rb->DataType = type;
+ osmesa->rb->Width = osmesa->rb->Height = 0;
-#define RENDER_SPAN( span ) \
- GLuint i; \
- GLuint *img = (GLuint *) PIXELADDR4(span->x, span->y); \
- for (i = 0; i < span->end; i++) { \
- const GLdepth z = FixedToDepth(span->z); \
- if (z < zRow[i]) { \
- img[i] = pixel; \
- zRow[i] = z; \
- } \
- span->z += span->zStep; \
- }
+ /* Set the framebuffer's size. This causes the
+ * osmesa_renderbuffer_storage() function to get called.
+ */
+ _mesa_resize_framebuffer(&osmesa->mesa, osmesa->gl_buffer, width, height);
+ osmesa->gl_buffer->Initialized = GL_TRUE; /* XXX TEMPORARY? */
-#ifdef WIN32
-#include "..\swrast\s_tritemp.h"
-#else
-#include "swrast/s_tritemp.h"
-#endif
-}
+ _mesa_make_current( &osmesa->mesa, osmesa->gl_buffer, osmesa->gl_buffer );
+ /* Remove renderbuffer attachment, then re-add. This installs the
+ * renderbuffer adaptor/wrapper if needed (for bpp conversion).
+ */
+ _mesa_remove_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT);
+ _mesa_add_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT, osmesa->rb);
-/*
- * Return pointer to an accelerated triangle function if possible.
- */
-static swrast_tri_func
-osmesa_choose_triangle_function( GLcontext *ctx )
-{
- const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- const SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ /* this updates the visual's red/green/blue/alphaBits fields */
+ _mesa_update_framebuffer_visual(osmesa->gl_buffer);
- if (CHAN_BITS != 8) return (swrast_tri_func) NULL;
- if (ctx->RenderMode != GL_RENDER) return (swrast_tri_func) NULL;
- if (ctx->Polygon.SmoothFlag) return (swrast_tri_func) NULL;
- if (ctx->Polygon.StippleFlag) return (swrast_tri_func) NULL;
- if (ctx->Texture._EnabledUnits) return (swrast_tri_func) NULL;
- if (osmesa->format != OSMESA_RGBA &&
- osmesa->format != OSMESA_BGRA &&
- osmesa->format != OSMESA_ARGB) return (swrast_tri_func) NULL;
- if (ctx->Polygon.CullFlag &&
- ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
- return (swrast_tri_func) NULL;
+ /* update the framebuffer size */
+ _mesa_resize_framebuffer(&osmesa->mesa, osmesa->gl_buffer, width, height);
- if (swrast->_RasterMask == DEPTH_BIT &&
- ctx->Depth.Func == GL_LESS &&
- ctx->Depth.Mask == GL_TRUE &&
- ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) {
- if (ctx->Light.ShadeModel == GL_SMOOTH) {
- return (swrast_tri_func) smooth_rgba_z_triangle;
- }
- else {
- return (swrast_tri_func) flat_rgba_z_triangle;
- }
- }
- return (swrast_tri_func) NULL;
+ return GL_TRUE;
}
-/* Override for the swrast triangle-selection function. Try to use one
- * of our internal triangle functions, otherwise fall back to the
- * standard swrast functions.
- */
-static void osmesa_choose_triangle( GLcontext *ctx )
+GLAPI OSMesaContext GLAPIENTRY
+OSMesaGetCurrentContext( void )
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
-
- swrast->Triangle = osmesa_choose_triangle_function( ctx );
- if (!swrast->Triangle)
- _swrast_choose_triangle( ctx );
+ GLcontext *ctx = _mesa_get_current_context();
+ if (ctx)
+ return (OSMesaContext) ctx;
+ else
+ return NULL;
}
-static void osmesa_choose_line( GLcontext *ctx )
+
+
+GLAPI void GLAPIENTRY
+OSMesaPixelStore( GLint pname, GLint value )
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ OSMesaContext osmesa = OSMesaGetCurrentContext();
- swrast->Line = osmesa_choose_line_function( ctx );
- if (!swrast->Line)
- _swrast_choose_line( ctx );
+ switch (pname) {
+ case OSMESA_ROW_LENGTH:
+ if (value<0) {
+ _mesa_error( &osmesa->mesa, GL_INVALID_VALUE,
+ "OSMesaPixelStore(value)" );
+ return;
+ }
+ osmesa->userRowLength = value;
+ break;
+ case OSMESA_Y_UP:
+ osmesa->yup = value ? GL_TRUE : GL_FALSE;
+ break;
+ default:
+ _mesa_error( &osmesa->mesa, GL_INVALID_ENUM, "OSMesaPixelStore(pname)" );
+ return;
+ }
+
+ compute_row_addresses( osmesa );
}
-#define OSMESA_NEW_LINE (_NEW_LINE | \
- _NEW_TEXTURE | \
- _NEW_LIGHT | \
- _NEW_DEPTH | \
- _NEW_RENDERMODE | \
- _SWRAST_NEW_RASTERMASK)
+GLAPI void GLAPIENTRY
+OSMesaGetIntegerv( GLint pname, GLint *value )
+{
+ OSMesaContext osmesa = OSMesaGetCurrentContext();
-#define OSMESA_NEW_TRIANGLE (_NEW_POLYGON | \
- _NEW_TEXTURE | \
- _NEW_LIGHT | \
- _NEW_DEPTH | \
- _NEW_RENDERMODE | \
- _SWRAST_NEW_RASTERMASK)
+ switch (pname) {
+ case OSMESA_WIDTH:
+ if (osmesa->gl_buffer)
+ *value = osmesa->gl_buffer->Width;
+ else
+ *value = 0;
+ return;
+ case OSMESA_HEIGHT:
+ if (osmesa->gl_buffer)
+ *value = osmesa->gl_buffer->Height;
+ else
+ *value = 0;
+ return;
+ case OSMESA_FORMAT:
+ *value = osmesa->format;
+ return;
+ case OSMESA_TYPE:
+ /* current color buffer's data type */
+ if (osmesa->rb) {
+ *value = osmesa->rb->DataType;
+ }
+ else {
+ *value = 0;
+ }
+ return;
+ case OSMESA_ROW_LENGTH:
+ *value = osmesa->userRowLength;
+ return;
+ case OSMESA_Y_UP:
+ *value = osmesa->yup;
+ return;
+ case OSMESA_MAX_WIDTH:
+ *value = MAX_WIDTH;
+ return;
+ case OSMESA_MAX_HEIGHT:
+ *value = MAX_HEIGHT;
+ return;
+ default:
+ _mesa_error(&osmesa->mesa, GL_INVALID_ENUM, "OSMesaGetIntergerv(pname)");
+ return;
+ }
+}
-/* Extend the software rasterizer with our line and triangle
- * functions.
+/**
+ * Return the depth buffer associated with an OSMesa context.
+ * Input: c - the OSMesa context
+ * Output: width, height - size of buffer in pixels
+ * bytesPerValue - bytes per depth value (2 or 4)
+ * buffer - pointer to depth buffer values
+ * Return: GL_TRUE or GL_FALSE to indicate success or failure.
*/
-static void osmesa_register_swrast_functions( GLcontext *ctx )
+GLAPI GLboolean GLAPIENTRY
+OSMesaGetDepthBuffer( OSMesaContext c, GLint *width, GLint *height,
+ GLint *bytesPerValue, void **buffer )
{
- SWcontext *swrast = SWRAST_CONTEXT( ctx );
+ struct gl_renderbuffer *rb = NULL;
- swrast->choose_line = osmesa_choose_line;
- swrast->choose_triangle = osmesa_choose_triangle;
+ if (c->gl_buffer)
+ rb = c->gl_buffer->Attachment[BUFFER_DEPTH].Renderbuffer;
- swrast->invalidate_line |= OSMESA_NEW_LINE;
- swrast->invalidate_triangle |= OSMESA_NEW_TRIANGLE;
+ if (!rb || !rb->Data) {
+ *width = 0;
+ *height = 0;
+ *bytesPerValue = 0;
+ *buffer = 0;
+ return GL_FALSE;
+ }
+ else {
+ *width = rb->Width;
+ *height = rb->Height;
+ if (c->gl_visual->depthBits <= 16)
+ *bytesPerValue = sizeof(GLushort);
+ else
+ *bytesPerValue = sizeof(GLuint);
+ *buffer = rb->Data;
+ return GL_TRUE;
+ }
}
-static const GLubyte *get_string( GLcontext *ctx, GLenum name )
+/**
+ * Return the color buffer associated with an OSMesa context.
+ * Input: c - the OSMesa context
+ * Output: width, height - size of buffer in pixels
+ * format - the pixel format (OSMESA_FORMAT)
+ * buffer - pointer to color buffer values
+ * Return: GL_TRUE or GL_FALSE to indicate success or failure.
+ */
+GLAPI GLboolean GLAPIENTRY
+OSMesaGetColorBuffer( OSMesaContext osmesa, GLint *width,
+ GLint *height, GLint *format, void **buffer )
{
- (void) ctx;
- switch (name) {
- case GL_RENDERER:
-#if CHAN_BITS == 32
- return (const GLubyte *) "Mesa OffScreen32";
-#elif CHAN_BITS == 16
- return (const GLubyte *) "Mesa OffScreen16";
-#else
- return (const GLubyte *) "Mesa OffScreen";
-#endif
- default:
- return NULL;
+ if (osmesa->rb && osmesa->rb->Data) {
+ *width = osmesa->rb->Width;
+ *height = osmesa->rb->Height;
+ *format = osmesa->format;
+ *buffer = osmesa->rb->Data;
+ return GL_TRUE;
+ }
+ else {
+ *width = 0;
+ *height = 0;
+ *format = 0;
+ *buffer = 0;
+ return GL_FALSE;
}
}
-static void osmesa_update_state( GLcontext *ctx, GLuint new_state )
+struct name_function
{
- OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
- struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference( ctx );
- TNLcontext *tnl = TNL_CONTEXT(ctx);
+ const char *Name;
+ OSMESAproc Function;
+};
- ASSERT((void *) osmesa == (void *) ctx->DriverCtx);
+static struct name_function functions[] = {
+ { "OSMesaCreateContext", (OSMESAproc) OSMesaCreateContext },
+ { "OSMesaCreateContextExt", (OSMESAproc) OSMesaCreateContextExt },
+ { "OSMesaDestroyContext", (OSMESAproc) OSMesaDestroyContext },
+ { "OSMesaMakeCurrent", (OSMESAproc) OSMesaMakeCurrent },
+ { "OSMesaGetCurrentContext", (OSMESAproc) OSMesaGetCurrentContext },
+ { "OSMesaPixelsStore", (OSMESAproc) OSMesaPixelStore },
+ { "OSMesaGetIntegerv", (OSMESAproc) OSMesaGetIntegerv },
+ { "OSMesaGetDepthBuffer", (OSMESAproc) OSMesaGetDepthBuffer },
+ { "OSMesaGetColorBuffer", (OSMESAproc) OSMesaGetColorBuffer },
+ { "OSMesaGetProcAddress", (OSMESAproc) OSMesaGetProcAddress },
+ { "OSMesaColorClamp", (OSMESAproc) OSMesaColorClamp },
+ { NULL, NULL }
+};
- /*
- * XXX these function pointers could be initialized just once during
- * context creation since they don't depend on any state changes.
- */
- ctx->Driver.GetString = get_string;
- ctx->Driver.UpdateState = osmesa_update_state;
- ctx->Driver.SetDrawBuffer = set_draw_buffer;
- ctx->Driver.ResizeBuffers = _swrast_alloc_buffers;
- ctx->Driver.GetBufferSize = buffer_size;
-
- ctx->Driver.Accum = _swrast_Accum;
- ctx->Driver.Bitmap = _swrast_Bitmap;
- ctx->Driver.Clear = clear;
- ctx->Driver.CopyPixels = _swrast_CopyPixels;
- ctx->Driver.DrawPixels = _swrast_DrawPixels;
- ctx->Driver.ReadPixels = _swrast_ReadPixels;
-
- ctx->Driver.ChooseTextureFormat = _mesa_choose_tex_format;
- ctx->Driver.TexImage1D = _mesa_store_teximage1d;
- ctx->Driver.TexImage2D = _mesa_store_teximage2d;
- ctx->Driver.TexImage3D = _mesa_store_teximage3d;
- ctx->Driver.TexSubImage1D = _mesa_store_texsubimage1d;
- ctx->Driver.TexSubImage2D = _mesa_store_texsubimage2d;
- ctx->Driver.TexSubImage3D = _mesa_store_texsubimage3d;
- ctx->Driver.TestProxyTexImage = _mesa_test_proxy_teximage;
-
- ctx->Driver.CopyTexImage1D = _swrast_copy_teximage1d;
- ctx->Driver.CopyTexImage2D = _swrast_copy_teximage2d;
- ctx->Driver.CopyTexSubImage1D = _swrast_copy_texsubimage1d;
- ctx->Driver.CopyTexSubImage2D = _swrast_copy_texsubimage2d;
- ctx->Driver.CopyTexSubImage3D = _swrast_copy_texsubimage3d;
- ctx->Driver.CopyColorTable = _swrast_CopyColorTable;
- ctx->Driver.CopyColorSubTable = _swrast_CopyColorSubTable;
- ctx->Driver.CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
- ctx->Driver.CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
-
- ctx->Driver.BaseCompressedTexFormat = _mesa_base_compressed_texformat;
- ctx->Driver.CompressedTextureSize = _mesa_compressed_texture_size;
- ctx->Driver.GetCompressedTexImage = _mesa_get_compressed_teximage;
-
- /* RGB(A) span/pixel functions */
- if (osmesa->format == OSMESA_RGB) {
- swdd->WriteRGBASpan = write_rgba_span_RGB;
- swdd->WriteRGBSpan = write_rgb_span_RGB;
- swdd->WriteMonoRGBASpan = write_monocolor_span_RGB;
- swdd->WriteRGBAPixels = write_rgba_pixels_RGB;
- swdd->WriteMonoRGBAPixels = write_monocolor_pixels_RGB;
- swdd->ReadRGBASpan = read_rgba_span3;
- swdd->ReadRGBAPixels = read_rgba_pixels3;
- }
- else if (osmesa->format == OSMESA_BGR) {
- swdd->WriteRGBASpan = write_rgba_span_BGR;
- swdd->WriteRGBSpan = write_rgb_span_BGR;
- swdd->WriteMonoRGBASpan = write_monocolor_span_BGR;
- swdd->WriteRGBAPixels = write_rgba_pixels_BGR;
- swdd->WriteMonoRGBAPixels = write_monocolor_pixels_BGR;
- swdd->ReadRGBASpan = read_rgba_span3;
- swdd->ReadRGBAPixels = read_rgba_pixels3;
+GLAPI OSMESAproc GLAPIENTRY
+OSMesaGetProcAddress( const char *funcName )
+{
+ int i;
+ for (i = 0; functions[i].Name; i++) {
+ if (_mesa_strcmp(functions[i].Name, funcName) == 0)
+ return functions[i].Function;
}
- else if (osmesa->format == OSMESA_RGB_565) {
- swdd->WriteRGBASpan = write_rgba_span2;
- swdd->WriteRGBSpan = write_rgb_span2;
- swdd->WriteMonoRGBASpan = write_monocolor_span2;
- swdd->WriteRGBAPixels = write_rgba_pixels2;
- swdd->WriteMonoRGBAPixels = write_monocolor_pixels2;
- swdd->ReadRGBASpan = read_rgba_span2;
- swdd->ReadRGBAPixels = read_rgba_pixels2;
+ return _glapi_get_proc_address(funcName);
+}
+
+
+GLAPI void GLAPIENTRY
+OSMesaColorClamp(GLboolean enable)
+{
+ OSMesaContext osmesa = OSMesaGetCurrentContext();
+
+ if (enable == GL_TRUE) {
+ osmesa->mesa.Color.ClampFragmentColor = GL_TRUE;
}
else {
- /* 4 GLchan / pixel in frame buffer */
- swdd->WriteRGBSpan = write_rgb_span;
- swdd->WriteRGBAPixels = write_rgba_pixels;
- swdd->WriteMonoRGBASpan = write_monocolor_span;
- swdd->WriteMonoRGBAPixels = write_monocolor_pixels;
- if (osmesa->format == OSMESA_RGBA &&
- CHAN_TYPE == GL_UNSIGNED_BYTE &&
- RCOMP==0 && GCOMP==1 && BCOMP==2 && ACOMP==3) {
- /* special, fast case */
- swdd->WriteRGBASpan = write_rgba_span_rgba;
- swdd->ReadRGBASpan = read_rgba_span_rgba;
- }
- else {
- swdd->WriteRGBASpan = write_rgba_span;
- swdd->ReadRGBASpan = read_rgba_span;
- }
- swdd->ReadRGBAPixels = read_rgba_pixels;
+ osmesa->mesa.Color.ClampFragmentColor = GL_FIXED_ONLY_ARB;
}
+}
- /* CI span/pixel functions */
- swdd->WriteCI32Span = write_index32_span;
- swdd->WriteCI8Span = write_index8_span;
- swdd->WriteMonoCISpan = write_monoindex_span;
- swdd->WriteCI32Pixels = write_index_pixels;
- swdd->WriteMonoCIPixels = write_monoindex_pixels;
- swdd->ReadCI32Span = read_index_span;
- swdd->ReadCI32Pixels = read_index_pixels;
-
- swdd->SetReadBuffer = set_read_buffer;
-
- tnl->Driver.RunPipeline = _tnl_run_pipeline;
- _swrast_InvalidateState( ctx, new_state );
- _swsetup_InvalidateState( ctx, new_state );
- _ac_InvalidateState( ctx, new_state );
- _tnl_InvalidateState( ctx, new_state );
-}
projects / mesa.git / blobdiff