diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.c | 1333 |
1 files changed, 0 insertions, 1333 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.c b/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.c deleted file mode 100644 index 8a85b5ecf..000000000 --- a/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.c +++ /dev/null @@ -1,1333 +0,0 @@ -/* - * Mesa 3-D graphics library - * Version: 6.3 - * - * Copyright (C) 1999-2005 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"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - - -/* - * Off-Screen Mesa rendering / Rendering into client memory space - * - * Note on thread safety: this driver is thread safe. All - * functions are reentrant. The notion of current context is - * managed by the core _mesa_make_current() and _mesa_get_current_context() - * functions. Those functions are thread-safe. - */ - - -#include "glheader.h" -#include "GL/osmesa.h" -#include "context.h" -#include "extensions.h" -#include "framebuffer.h" -#include "fbobject.h" -#include "imports.h" -#include "mtypes.h" -#include "renderbuffer.h" -#include "array_cache/acache.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" - - - -/* - * 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. - */ -struct osmesa_context { - GLcontext mesa; /* 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 */ -}; - - -/* Just cast, since we're using structure containment */ -#define OSMESA_CONTEXT(ctx) ((OSMesaContext) (ctx->DriverCtx)) - - - -/**********************************************************************/ -/*** Private Device Driver Functions ***/ -/**********************************************************************/ - - -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; - } -} - - -static void -osmesa_update_state( GLcontext *ctx, GLuint new_state ) -{ - /* easy - just propogate */ - _swrast_InvalidateState( ctx, new_state ); - _swsetup_InvalidateState( ctx, new_state ); - _ac_InvalidateState( ctx, new_state ); - _tnl_InvalidateState( ctx, new_state ); -} - - -static void -set_buffer( GLcontext *ctx, GLframebuffer *buffer, GLuint bufferBit ) -{ - /* separate read buffer not supported */ - ASSERT(buffer == ctx->DrawBuffer); - ASSERT(bufferBit == BUFFER_BIT_FRONT_LEFT); -} - - -/* - * Just return the current buffer size. - * There's no window to track the size of. - */ -static void -get_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; - } -} - - -/**********************************************************************/ -/***** Read/write spans/arrays of pixels *****/ -/**********************************************************************/ - -/* RGBA */ -#define NAME(PREFIX) PREFIX##_RGBA -#define FORMAT GL_RGBA -#define SPAN_VARS \ - const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); -#define INIT_PIXEL_PTR(P, X, Y) \ - GLchan *P = osmesa->rowaddr[Y] + 4 * (X) -#define INC_PIXEL_PTR(P) P += 4 -#if CHAN_TYPE == GL_FLOAT -#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, CHAN_MAXF) -#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] = CHAN_MAXF -#else -#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] = CHAN_MAX -#endif -#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" - -/* BGRA */ -#define NAME(PREFIX) PREFIX##_BGRA -#define FORMAT GL_RGBA -#define SPAN_VARS \ - const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); -#define INIT_PIXEL_PTR(P, X, Y) \ - GLchan *P = 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] = CHAN_MAX -#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" - -/* ARGB */ -#define NAME(PREFIX) PREFIX##_ARGB -#define FORMAT GL_RGBA -#define SPAN_VARS \ - const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); -#define INIT_PIXEL_PTR(P, X, Y) \ - GLchan *P = 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] = CHAN_MAX -#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" - -/* RGB */ -#define NAME(PREFIX) PREFIX##_RGB -#define FORMAT GL_RGBA -#define SPAN_VARS \ - const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); -#define INIT_PIXEL_PTR(P, X, Y) \ - GLchan *P = osmesa->rowaddr[Y] + 4 * (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] = CHAN_MAX -#include "swrast/s_spantemp.h" - -/* BGR */ -#define NAME(PREFIX) PREFIX##_BGR -#define FORMAT GL_RGBA -#define SPAN_VARS \ - const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); -#define INIT_PIXEL_PTR(P, X, Y) \ - GLchan *P = osmesa->rowaddr[Y] + 4 * (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] = CHAN_MAX -#include "swrast/s_spantemp.h" - -/* 16-bit BGR */ -#if CHAN_TYPE == GL_UNSIGNED_BYTE -#define NAME(PREFIX) PREFIX##_RGB_565 -#define FORMAT GL_RGBA -#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" -#endif /* CHAN_TYPE == GL_UNSIGNED_BYTE */ - -/* color index */ -#define NAME(PREFIX) PREFIX##_CI -#define FORMAT GL_COLOR_INDEX8_EXT -#define SPAN_VARS \ - const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); -#define INIT_PIXEL_PTR(P, X, Y) \ - GLubyte *P = 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" - - - - -/**********************************************************************/ -/***** Optimized line rendering *****/ -/**********************************************************************/ - - -#if CHAN_TYPE == GL_FLOAT -#define PACK_RGBA(DST, R, G, B, A) \ -do { \ - (DST)[0] = MAX2( R, 0.0F ); \ - (DST)[1] = MAX2( G, 0.0F ); \ - (DST)[2] = MAX2( B, 0.0F ); \ - (DST)[3] = CLAMP(A, 0.0F, CHAN_MAXF);\ -} 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)) - - -/* - * 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; - -#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. - */ -#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; - -#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 - - - -/* - * 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; - } - - 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 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; \ - } -#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 GLdepth 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 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); - - 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; - - 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 ); -} - - -#define OSMESA_NEW_LINE (_NEW_LINE | \ - _NEW_TEXTURE | \ - _NEW_LIGHT | \ - _NEW_DEPTH | \ - _NEW_RENDERMODE | \ - _SWRAST_NEW_RASTERMASK) - -#define OSMESA_NEW_TRIANGLE (_NEW_POLYGON | \ - _NEW_TEXTURE | \ - _NEW_LIGHT | \ - _NEW_DEPTH | \ - _NEW_RENDERMODE | \ - _SWRAST_NEW_RASTERMASK) - - -/** - * Don't use _mesa_delete_renderbuffer since we can't free rb->Data. - */ -static void -osmesa_delete_renderbuffer(struct gl_renderbuffer *rb) -{ - _mesa_free(rb); -} - - -/** - * 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); - - if (osmesa->format == OSMESA_RGBA) { - rb->GetRow = get_row_RGBA; - rb->GetValues = get_values_RGBA; - rb->PutRow = put_row_RGBA; - rb->PutRowRGB = put_row_rgb_RGBA; - rb->PutMonoRow = put_mono_row_RGBA; - rb->PutValues = put_values_RGBA; - rb->PutMonoValues = put_mono_values_RGBA; - } - else if (osmesa->format == OSMESA_BGRA) { - rb->GetRow = get_row_BGRA; - rb->GetValues = get_values_BGRA; - rb->PutRow = put_row_BGRA; - rb->PutRowRGB = put_row_rgb_BGRA; - rb->PutMonoRow = put_mono_row_BGRA; - rb->PutValues = put_values_BGRA; - rb->PutMonoValues = put_mono_values_BGRA; - } - else if (osmesa->format == OSMESA_ARGB) { - rb->GetRow = get_row_ARGB; - rb->GetValues = get_values_ARGB; - rb->PutRow = put_row_ARGB; - rb->PutRowRGB = put_row_rgb_ARGB; - rb->PutMonoRow = put_mono_row_ARGB; - rb->PutValues = put_values_ARGB; - rb->PutMonoValues = put_mono_values_ARGB; - } - else if (osmesa->format == OSMESA_RGB) { - rb->GetRow = get_row_RGB; - rb->GetValues = get_values_RGB; - rb->PutRow = put_row_RGB; - rb->PutRowRGB = put_row_rgb_RGB; - rb->PutMonoRow = put_mono_row_RGB; - rb->PutValues = put_values_RGB; - rb->PutMonoValues = put_mono_values_RGB; - } - else if (osmesa->format == OSMESA_BGR) { - rb->GetRow = get_row_BGR; - rb->GetValues = get_values_BGR; - rb->PutRow = put_row_BGR; - rb->PutRowRGB = put_row_rgb_BGR; - rb->PutMonoRow = put_mono_row_BGR; - rb->PutValues = put_values_BGR; - rb->PutMonoValues = put_mono_values_BGR; - } -#if CHAN_TYPE == GL_UNSIGNED_BYTE - else if (osmesa->format == OSMESA_RGB_565) { - rb->GetRow = get_row_RGB_565; - rb->GetValues = get_values_RGB_565; - rb->PutRow = put_row_RGB_565; - rb->PutRow = 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; - } -#endif - 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; - } - else { - _mesa_problem(ctx, "bad pixel format in osmesa renderbuffer_storage"); - } - - return GL_TRUE; -} - - -/** - * Allocate a new renderbuffer tpo describe the user-provided color buffer. - */ -static struct gl_renderbuffer * -new_osmesa_renderbuffer(GLenum format) -{ - struct gl_renderbuffer *rb = CALLOC_STRUCT(gl_renderbuffer); - if (rb) { - const GLuint name = 0; - _mesa_init_renderbuffer(rb, name); - - rb->Delete = osmesa_delete_renderbuffer; - rb->AllocStorage = osmesa_renderbuffer_storage; - - if (format == OSMESA_COLOR_INDEX) { - rb->_BaseFormat = GL_COLOR_INDEX; - rb->InternalFormat = GL_COLOR_INDEX; - rb->DataType = GL_UNSIGNED_BYTE; - } - else { - rb->_BaseFormat = GL_RGBA; - rb->InternalFormat = GL_RGBA; - rb->DataType = CHAN_TYPE; - } - } - return rb; -} - - - -/**********************************************************************/ -/***** Public Functions *****/ -/**********************************************************************/ - - -/* - * 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); -} - - - -/* - * 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 osmesa; - struct dd_function_table functions; - 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; - - 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; - } -#if CHAN_TYPE == GL_UNSIGNED_BYTE - 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; - } -#endif - else { - return NULL; - } - - 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; - } - - /* 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 = get_buffer_size; - - if (!_mesa_initialize_context(&osmesa->mesa, - osmesa->gl_visual, - sharelist ? &sharelist->mesa - : (GLcontext *) NULL, - &functions, (void *) osmesa)) { - _mesa_destroy_visual( osmesa->gl_visual ); - 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)); - - 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 ); - FREE(osmesa); - return NULL; - } - - /* create front color buffer in user-provided memory (no back buffer) */ - _mesa_add_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT, - new_osmesa_renderbuffer(format)); - _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 */ ); - - 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->mesa; - SWcontext *swrast; - struct swrast_device_driver *swdd; - TNLcontext *tnl; - - if (!_swrast_CreateContext( ctx ) || - !_ac_CreateContext( ctx ) || - !_tnl_CreateContext( ctx ) || - !_swsetup_CreateContext( ctx )) { - _mesa_destroy_visual(osmesa->gl_visual); - _mesa_free_context_data(ctx); - _mesa_free(osmesa); - return NULL; - } - - _swsetup_Wakeup( ctx ); - - /* use default TCL pipeline */ - tnl = TNL_CONTEXT(ctx); - tnl->Driver.RunPipeline = _tnl_run_pipeline; - - swdd = _swrast_GetDeviceDriverReference( ctx ); - swdd->SetBuffer = set_buffer; - - /* 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; - swrast->invalidate_line |= OSMESA_NEW_LINE; - swrast->invalidate_triangle |= OSMESA_NEW_TRIANGLE; - } - } - return osmesa; -} - - -/* - * Destroy an Off-Screen Mesa rendering context. - * - * Input: ctx - the context to destroy - */ -GLAPI void GLAPIENTRY -OSMesaDestroyContext( OSMesaContext ctx ) -{ - if (ctx) { - _swsetup_DestroyContext( &ctx->mesa ); - _tnl_DestroyContext( &ctx->mesa ); - _ac_DestroyContext( &ctx->mesa ); - _swrast_DestroyContext( &ctx->mesa ); - - _mesa_destroy_visual( ctx->gl_visual ); - _mesa_destroy_framebuffer( ctx->gl_buffer ); - _mesa_free_context_data( &ctx->mesa ); - FREE( ctx ); - } -} - - -/* - * Recompute the values of the context's rowaddr array. - */ -static void -compute_row_addresses( OSMesaContext ctx ) -{ - GLint bytesPerPixel, bytesPerRow, i; - GLubyte *origin = (GLubyte *) ctx->buffer; - - if (ctx->format == OSMESA_COLOR_INDEX) { - /* CI mode */ - bytesPerPixel = 1 * sizeof(GLchan); - } - else if ((ctx->format == OSMESA_RGB) || (ctx->format == OSMESA_BGR)) { - /* RGB mode */ - bytesPerPixel = 3 * sizeof(GLchan); - } - else if (ctx->format == OSMESA_RGB_565) { - /* 5/6/5 RGB pixel in 16 bits */ - bytesPerPixel = 2; - } - else { - /* RGBA mode */ - bytesPerPixel = 4 * sizeof(GLchan); - } - - bytesPerRow = ctx->rowlength * bytesPerPixel; - - if (ctx->yup) { - /* Y=0 is bottom line of window */ - for (i = 0; i < MAX_HEIGHT; i++) { - ctx->rowaddr[i] = (GLchan *) ((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); - } - } -} - - -/* - * 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. - */ -GLAPI GLboolean GLAPIENTRY -OSMesaMakeCurrent( OSMesaContext ctx, void *buffer, GLenum type, - GLsizei width, GLsizei height ) -{ - if (!ctx || !buffer || - width < 1 || height < 1 || - width > MAX_WIDTH || height > MAX_HEIGHT) { - return GL_FALSE; - } - - 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; - } - - /* Need to set these before calling _mesa_make_current() since the first - * time the context is bound, _mesa_make_current() will call our - * get_buffer_size() function to initialize the viewport. These are the - * values returned by get_buffer_size(): - */ - ctx->buffer = buffer; - ctx->width = width; - ctx->height = height; - - osmesa_update_state( &ctx->mesa, 0 ); - _mesa_make_current( &ctx->mesa, ctx->gl_buffer, ctx->gl_buffer ); - - if (ctx->userRowLength) - ctx->rowlength = ctx->userRowLength; - else - ctx->rowlength = width; - - compute_row_addresses( ctx ); - - /* this will make ensure we recognize the new buffer size */ - _mesa_resize_framebuffer(&ctx->mesa, ctx->gl_buffer, width, height); - - /* Added by Gerk Huisma: */ - _tnl_MakeCurrent( &ctx->mesa, ctx->mesa.DrawBuffer, - ctx->mesa.ReadBuffer ); - - return GL_TRUE; -} - - - -GLAPI OSMesaContext GLAPIENTRY -OSMesaGetCurrentContext( void ) -{ - GLcontext *ctx = _mesa_get_current_context(); - if (ctx) - return (OSMesaContext) ctx; - else - return NULL; -} - - - -GLAPI void GLAPIENTRY -OSMesaPixelStore( GLint pname, GLint value ) -{ - OSMesaContext osmesa = OSMesaGetCurrentContext(); - - switch (pname) { - case OSMESA_ROW_LENGTH: - if (value<0) { - _mesa_error( &osmesa->mesa, GL_INVALID_VALUE, - "OSMesaPixelStore(value)" ); - return; - } - osmesa->userRowLength = value; - osmesa->rowlength = value ? value : osmesa->width; - 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 ); -} - - -GLAPI void GLAPIENTRY -OSMesaGetIntegerv( GLint pname, GLint *value ) -{ - OSMesaContext osmesa = OSMesaGetCurrentContext(); - - switch (pname) { - case OSMESA_WIDTH: - *value = osmesa->width; - return; - case OSMESA_HEIGHT: - *value = osmesa->height; - return; - case OSMESA_FORMAT: - *value = osmesa->format; - return; - case OSMESA_TYPE: - *value = CHAN_TYPE; - 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; - } -} - -/* - * 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 ) -{ - struct gl_renderbuffer *rb = NULL; - - if (c->gl_buffer) - rb = c->gl_buffer->Attachment[BUFFER_DEPTH].Renderbuffer; - - if (!rb || !rb->Data) { - /*if ((!c->gl_buffer) || (!c->gl_buffer->DepthBuffer)) {*/ - *width = 0; - *height = 0; - *bytesPerValue = 0; - *buffer = 0; - return GL_FALSE; - } - 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 = rb->Data; - return 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 { - *width = c->width; - *height = c->height; - *format = c->format; - *buffer = c->buffer; - return GL_TRUE; - } -} - - -struct name_function -{ - const char *Name; - OSMESAproc Function; -}; - -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 }, - { NULL, NULL } -}; - - -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; - } - return _glapi_get_proc_address(funcName); -} |