diff options
Diffstat (limited to 'src/mesa/drivers/dos/dmesa.c')
| -rw-r--r-- | src/mesa/drivers/dos/dmesa.c | 1428 |
1 files changed, 186 insertions, 1242 deletions
diff --git a/src/mesa/drivers/dos/dmesa.c b/src/mesa/drivers/dos/dmesa.c index 719f4ec54d..ee87e63852 100644 --- a/src/mesa/drivers/dos/dmesa.c +++ b/src/mesa/drivers/dos/dmesa.c @@ -23,922 +23,60 @@ */ /* - * DOS/DJGPP device driver v1.7 for Mesa + * DOS/DJGPP device driver for Mesa * - * Copyright (c) 2003 - Daniel Borca + * Author: Daniel Borca * Email : dborca@users.sourceforge.net * Web : http://www.geocities.com/dborca */ -#include "glheader.h" #include "context.h" #include "imports.h" -#ifndef FX -#include "bufferobj.h" -#include "buffers.h" -#include "extensions.h" -#include "macros.h" -#include "matrix.h" #include "mtypes.h" -#include "texformat.h" -#include "teximage.h" -#include "texstore.h" -#include "array_cache/acache.h" -#include "swrast/s_context.h" -#include "swrast/s_depth.h" -#include "swrast/s_lines.h" -#include "swrast/s_triangle.h" -#include "swrast/swrast.h" -#include "swrast_setup/swrast_setup.h" -#include "tnl/tnl.h" -#include "tnl/t_context.h" -#include "tnl/t_pipeline.h" -#include "drivers/common/driverfuncs.h" + #include "video.h" -#else /* FX */ -#include "GL/fxmesa.h" -#endif /* FX */ +#include "GL/osmesa.h" #include "GL/dmesa.h" -#define SWTC 0 /* SW texture compression */ - - /* - * In C++ terms, this class derives from the GLvisual class. - * Add system-specific fields to it. + * This has nothing to do with Mesa Visual structure. + * We keep this one around for backwards compatibility, + * and to store video mode data for DMesaCreateContext. */ struct dmesa_visual { - GLvisual gl_visual; - GLboolean sw_alpha; /* use Mesa's alpha buffer? */ - int z_buffer; /* Z=buffer: 0=no, 1=SW, -1=HW */ + GLenum format; /* OSMesa framebuffer format */ + GLint depthBits; + GLint stencilBits; + GLint accumBits; }; /* - * In C++ terms, this class derives from the GLframebuffer class. - * Add system-specific fields to it. + * This has nothing to do with Mesa Buffer structure. + * We keep this one around for backwards compatibility, + * and to store various data. */ struct dmesa_buffer { - GLframebuffer gl_buffer; /* The depth, stencil, accum, etc buffers */ - void *the_window; /* your window handle, etc */ - - int xpos, ypos; /* position */ - int width, height; /* size in pixels */ + int xpos, ypos; /* position */ + int width, height; /* size in pixels */ + GLenum type; + void *the_window; /* your window handle, etc */ }; /* - * In C++ terms, this class derives from the GLcontext class. - * Add system-specific fields to it. + * This has nothing to do with Mesa Context structure. + * We keep this one around for backwards compatibility, + * and to store real off-screen context. */ struct dmesa_context { - GLcontext gl_ctx; /* the core library context */ - DMesaVisual visual; - DMesaBuffer buffer; - GLuint ClearColor; - GLuint ClearIndex; - /* etc... */ + OSMesaContext osmesa; + DMesaBuffer buffer; }; -/* - * SPAN FUNCTIONS - * XXX: These need to be updated to take the new gl_renderbuffer parameter - * introduced in Mesa 6.3. That parameter will indicate whether the front - * or back color buffer is to be read/written. - */ - -#ifndef FX -/**************************************************************************** - * Read/Write pixels - ***************************************************************************/ -#define FLIP(y) (dmesa->buffer->height - (y) - 1) -#define FLIP2(y) (_b_ - (y)) - -#define DSTRIDE dmesa->buffer->width - -/**************************************************************************** - * RGB[A] - ***************************************************************************/ -static void -write_rgba_span (const GLcontext *ctx, GLuint n, GLint x, GLint y, - const GLubyte rgba[][4], const GLubyte mask[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, offset; - - offset = DSTRIDE * FLIP(y) + x; - if (mask) { - /* draw some pixels */ - for (i = 0; i < n; i++, offset++) { - if (mask[i]) { - vl_putpixel(offset, vl_mixrgba(rgba[i])); - } - } - } else { - /* draw all pixels */ - for (i = 0; i < n; i++, offset++) { - vl_putpixel(offset, vl_mixrgba(rgba[i])); - } - } -} - - -static void -write_rgb_span (const GLcontext *ctx, GLuint n, GLint x, GLint y, - const GLubyte rgb[][3], const GLubyte mask[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, offset; - - offset = DSTRIDE * FLIP(y) + x; - if (mask) { - /* draw some pixels */ - for (i = 0; i < n; i++, offset++) { - if (mask[i]) { - vl_putpixel(offset, vl_mixrgb(rgb[i])); - } - } - } else { - /* draw all pixels */ - for (i = 0; i < n; i++, offset++) { - vl_putpixel(offset, vl_mixrgb(rgb[i])); - } - } -} - - -static void -write_mono_rgba_span (const GLcontext *ctx, - GLuint n, GLint x, GLint y, - const GLchan color[4], const GLubyte mask[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, offset, rgba = vl_mixrgba(color); - - offset = DSTRIDE * FLIP(y) + x; - if (mask) { - /* draw some pixels */ - for (i = 0; i < n; i++, offset++) { - if (mask[i]) { - vl_putpixel(offset, rgba); - } - } - } else { - /* draw all pixels */ - for (i = 0; i < n; i++, offset++) { - vl_putpixel(offset, rgba); - } - } -} - - -static void -read_rgba_span (const GLcontext *ctx, GLuint n, GLint x, GLint y, - GLubyte rgba[][4]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, offset; - - offset = DSTRIDE * FLIP(y) + x; - /* read all pixels */ - for (i = 0; i < n; i++, offset++) { - vl_getrgba(offset, rgba[i]); - } -} - - -static void -write_rgba_pixels (const GLcontext *ctx, - GLuint n, const GLint x[], const GLint y[], - const GLubyte rgba[][4], const GLubyte mask[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, _w_ = DSTRIDE, _b_ = dmesa->buffer->height - 1; - - if (mask) { - /* draw some pixels */ - for (i = 0; i < n; i++) { - if (mask[i]) { - vl_putpixel(FLIP2(y[i])*_w_ + x[i], vl_mixrgba(rgba[i])); - } - } - } else { - /* draw all pixels */ - for (i = 0; i < n; i++) { - vl_putpixel(FLIP2(y[i])*_w_ + x[i], vl_mixrgba(rgba[i])); - } - } -} - - -static void -write_mono_rgba_pixels (const GLcontext *ctx, - GLuint n, const GLint x[], const GLint y[], - const GLchan color[4], const GLubyte mask[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, _w_ = DSTRIDE, _b_ = dmesa->buffer->height - 1, rgba = vl_mixrgba(color); - - if (mask) { - /* draw some pixels */ - for (i = 0; i < n; i++) { - if (mask[i]) { - vl_putpixel(FLIP2(y[i])*_w_ + x[i], rgba); - } - } - } else { - /* draw all pixels */ - for (i = 0; i < n; i++) { - vl_putpixel(FLIP2(y[i])*_w_ + x[i], rgba); - } - } -} - - -static void -read_rgba_pixels (const GLcontext *ctx, - GLuint n, const GLint x[], const GLint y[], - GLubyte rgba[][4], const GLubyte mask[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, _w_ = DSTRIDE, _b_ = dmesa->buffer->height - 1; - - if (mask) { - /* read some pixels */ - for (i = 0; i < n; i++) { - if (mask[i]) { - vl_getrgba(FLIP2(y[i])*_w_ + x[i], rgba[i]); - } - } - } else { - /* read all pixels */ - for (i = 0; i < n; i++) { - vl_getrgba(FLIP2(y[i])*_w_ + x[i], rgba[i]); - } - } -} - - -/**************************************************************************** - * Index - ***************************************************************************/ -static void -write_index_span (const GLcontext *ctx, struct gl_renderbuffer *rb, - GLuint n, GLint x, GLint y, - const GLuint index[], const GLubyte mask[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, offset; - - offset = DSTRIDE * FLIP(y) + x; - if (mask) { - /* draw some pixels */ - for (i = 0; i < n; i++, offset++) { - if (mask[i]) { - vl_putpixel(offset, index[i]); - } - } - } else { - /* draw all pixels */ - for (i = 0; i < n; i++, offset++) { - vl_putpixel(offset, index[i]); - } - } -} - - -static void -write_index8_span (const GLcontext *ctx, struct gl_renderbuffer *rb, - GLuint n, GLint x, GLint y, - const GLubyte index[], const GLubyte mask[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, offset; - - offset = DSTRIDE * FLIP(y) + x; - if (mask) { - /* draw some pixels */ - for (i = 0; i < n; i++, offset++) { - if (mask[i]) { - vl_putpixel(offset, index[i]); - } - } - } else { - /* draw all pixels */ - for (i = 0; i < n; i++, offset++) { - vl_putpixel(offset, index[i]); - } - } -} - - -static void -write_mono_index_span (const GLcontext *ctx, struct gl_renderbuffer *rb, - GLuint n, GLint x, GLint y, - GLuint colorIndex, const GLubyte mask[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, offset; - - offset = DSTRIDE * FLIP(y) + x; - if (mask) { - /* draw some pixels */ - for (i = 0; i < n; i++, offset++) { - if (mask[i]) { - vl_putpixel(offset, colorIndex); - } - } - } else { - /* draw all pixels */ - for (i = 0; i < n; i++, offset++) { - vl_putpixel(offset, colorIndex); - } - } -} - - -static void -read_index_span (const GLcontext *ctx, struct gl_renderbuffer *rb, - GLuint n, GLint x, GLint y, GLuint index[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, offset; - - offset = DSTRIDE * FLIP(y) + x; - /* read all pixels */ - for (i = 0; i < n; i++, offset++) { - index[i] = vl_getpixel(offset); - } -} - - -static void -write_index_pixels (const GLcontext *ctx, struct gl_renderbuffer *rb, - GLuint n, const GLint x[], const GLint y[], - const GLuint index[], const GLubyte mask[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, _w_ = DSTRIDE, _b_ = dmesa->buffer->height - 1; - - if (mask) { - /* draw some pixels */ - for (i = 0; i < n; i++) { - if (mask[i]) { - vl_putpixel(FLIP2(y[i])*_w_ + x[i], index[i]); - } - } - } else { - /* draw all pixels */ - for (i = 0; i < n; i++) { - vl_putpixel(FLIP2(y[i])*_w_ + x[i], index[i]); - } - } -} - - -static void -write_mono_index_pixels (const GLcontext *ctx, struct gl_renderbuffer *rb, - GLuint n, const GLint x[], const GLint y[], - GLuint colorIndex, const GLubyte mask[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, _w_ = DSTRIDE, _b_ = dmesa->buffer->height - 1; - - if (mask) { - /* draw some pixels */ - for (i = 0; i < n; i++) { - if (mask[i]) { - vl_putpixel(FLIP2(y[i])*_w_ + x[i], colorIndex); - } - } - } else { - /* draw all pixels */ - for (i = 0; i < n; i++) { - vl_putpixel(FLIP2(y[i])*_w_ + x[i], colorIndex); - } - } -} - - -static void -read_index_pixels (const GLcontext *ctx, struct gl_renderbuffer *rb, - GLuint n, const GLint x[], const GLint y[], - GLuint index[], const GLubyte mask[]) -{ - const DMesaContext dmesa = (DMesaContext)ctx; - GLuint i, _w_ = DSTRIDE, _b_ = dmesa->buffer->height - 1; - - if (mask) { - /* read some pixels */ - for (i = 0; i < n; i++) { - if (mask[i]) { - index[i] = vl_getpixel(FLIP2(y[i])*_w_ + x[i]); - } - } - } else { - /* read all pixels */ - for (i = 0; i < n; i++) { - index[i] = vl_getpixel(FLIP2(y[i])*_w_ + x[i]); - } - } -} - - -/**************************************************************************** - * Z-buffer - ***************************************************************************/ - - -/**************************************************************************** - * Optimized triangle rendering - ***************************************************************************/ - -/* - * NON-depth-buffered flat triangle. - */ -#define NAME tri_rgb_flat - -#define SETUP_CODE \ - const DMesaContext dmesa = (DMesaContext)ctx;\ - GLuint _b_ = dmesa->buffer->height - 1; \ - GLuint _w_ = dmesa->buffer->width; \ - GLuint rgb = vl_mixrgb(v2->color); - -#define RENDER_SPAN(span) \ - GLuint i, offset = FLIP2(span.y)*_w_ + span.x;\ - for (i = 0; i < span.end; i++, offset++) { \ - vl_putpixel(offset, rgb); \ - } - -#include "swrast/s_tritemp.h" - - -/* - * Z-less flat triangle. - */ -#define NAME tri_rgb_flat_zless - -#define INTERP_Z 1 -#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE - -#define SETUP_CODE \ - const DMesaContext dmesa = (DMesaContext)ctx; \ - GLuint _b_ = dmesa->buffer->height - 1; \ - GLuint _w_ = dmesa->buffer->width; \ - GLuint rgb = vl_mixrgb(v2->color); - -#define RENDER_SPAN(span) \ - GLuint i, offset = FLIP2(span.y)*_w_ + span.x;\ - for (i = 0; i < span.end; i++, offset++) { \ - const DEPTH_TYPE z = FixedToDepth(span.z);\ - if (z < zRow[i]) { \ - vl_putpixel(offset, rgb); \ - zRow[i] = z; \ - } \ - span.z += span.zStep; \ - } - -#include "swrast/s_tritemp.h" - - -/* - * NON-depth-buffered iterated triangle. - */ -#define NAME tri_rgb_iter - -#define INTERP_RGB 1 - -#define SETUP_CODE \ - const DMesaContext dmesa = (DMesaContext)ctx;\ - GLuint _b_ = dmesa->buffer->height - 1; \ - GLuint _w_ = dmesa->buffer->width; - -#define RENDER_SPAN(span) \ - GLuint i, offset = FLIP2(span.y)*_w_ + span.x; \ - for (i = 0; i < span.end; i++, offset++) { \ - vl_putpixel(offset, vl_mixfix(span.red, span.green, span.blue)); \ - span.red += span.redStep; \ - span.green += span.greenStep; \ - span.blue += span.blueStep; \ - } - -#include "swrast/s_tritemp.h" - - -/* - * Z-less iterated triangle. - */ -#define NAME tri_rgb_iter_zless - -#define INTERP_Z 1 -#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE -#define INTERP_RGB 1 - -#define SETUP_CODE \ - const DMesaContext dmesa = (DMesaContext)ctx;\ - GLuint _b_ = dmesa->buffer->height - 1; \ - GLuint _w_ = dmesa->buffer->width; - -#define RENDER_SPAN(span) \ - GLuint i, offset = FLIP2(span.y)*_w_ + span.x; \ - for (i = 0; i < span.end; i++, offset++) { \ - const DEPTH_TYPE z = FixedToDepth(span.z); \ - if (z < zRow[i]) { \ - vl_putpixel(offset, vl_mixfix(span.red, span.green, span.blue));\ - zRow[i] = z; \ - } \ - span.red += span.redStep; \ - span.green += span.greenStep; \ - span.blue += span.blueStep; \ - span.z += span.zStep; \ - } - -#include "swrast/s_tritemp.h" - - -/* - * Analyze context state to see if we can provide a fast triangle function - * Otherwise, return NULL. - */ -static swrast_tri_func -dmesa_choose_tri_function (GLcontext *ctx) -{ - const SWcontext *swrast = SWRAST_CONTEXT(ctx); - - if ((ctx->RenderMode != GL_RENDER) - || (ctx->Polygon.SmoothFlag) - || (ctx->Polygon.StippleFlag) - || (ctx->Texture._EnabledUnits) - || (swrast->_RasterMask & MULTI_DRAW_BIT) - || (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) { - return (ctx->Light.ShadeModel==GL_SMOOTH) ? tri_rgb_iter_zless : tri_rgb_flat_zless; - } - - if (swrast->_RasterMask==0) { /* no depth test */ - return (ctx->Light.ShadeModel==GL_SMOOTH) ? tri_rgb_iter : tri_rgb_flat; - } - - 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 -dmesa_choose_tri (GLcontext *ctx) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - - if (!(swrast->Triangle=dmesa_choose_tri_function(ctx))) { - _swrast_choose_triangle(ctx); - } -} - - -/**************************************************************************** - * Optimized line rendering - ***************************************************************************/ - -/* - * NON-depth-buffered flat line. - */ -#define NAME line_rgb_flat - -#define INTERP_XY 1 -#define CLIP_HACK 1 - -#define SETUP_CODE \ - const DMesaContext dmesa = (DMesaContext)ctx;\ - GLuint _b_ = dmesa->buffer->height - 1; \ - GLuint _w_ = dmesa->buffer->width; \ - GLuint rgb = vl_mixrgb(vert1->color); - -#define PLOT(X,Y) vl_putpixel(FLIP2(Y) * _w_ + X, rgb); - -#include "swrast/s_linetemp.h" - - -/* - * Z-less flat line. - */ -#define NAME line_rgb_flat_zless - -#define INTERP_XY 1 -#define INTERP_Z 1 -#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE -#define CLIP_HACK 1 - -#define SETUP_CODE \ - const DMesaContext dmesa = (DMesaContext)ctx;\ - GLuint _b_ = dmesa->buffer->height - 1; \ - GLuint _w_ = dmesa->buffer->width; \ - GLuint rgb = vl_mixrgb(vert1->color); - -#define PLOT(X,Y) \ - if (Z < *zPtr) { \ - *zPtr = Z; \ - vl_putpixel(FLIP2(Y) * _w_ + X, rgb); \ - } - -#include "swrast/s_linetemp.h" - - -/* - * NON-depth-buffered iterated line. - */ -#define line_rgb_iter NULL - - -/* - * Z-less iterated line. - */ -#define line_rgb_iter_zless NULL - - -/* - * Analyze context state to see if we can provide a fast line function - * Otherwise, return NULL. - */ -static swrast_line_func -dmesa_choose_line_function (GLcontext *ctx) -{ - const SWcontext *swrast = SWRAST_CONTEXT(ctx); - - if ((ctx->RenderMode != GL_RENDER) - || (ctx->Line.SmoothFlag) - || (ctx->Texture._EnabledUnits) - || (ctx->Line.StippleFlag) - || (swrast->_RasterMask & MULTI_DRAW_BIT) - || (ctx->Line.Width!=1.0F)) { - return (swrast_line_func)NULL; - } - - if (swrast->_RasterMask==DEPTH_BIT - && ctx->Depth.Func==GL_LESS - && ctx->Depth.Mask==GL_TRUE - && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) { - return (ctx->Light.ShadeModel==GL_SMOOTH) ? line_rgb_iter_zless : line_rgb_flat_zless; - } - - if (swrast->_RasterMask==0) { /* no depth test */ - return (ctx->Light.ShadeModel==GL_SMOOTH) ? line_rgb_iter : line_rgb_flat; - } - - return (swrast_line_func)NULL; -} - - -/* Override for the swrast line-selection function. Try to use one - * of our internal line functions, otherwise fall back to the - * standard swrast functions. - */ -static void -dmesa_choose_line (GLcontext *ctx) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - - if (!(swrast->Line=dmesa_choose_line_function(ctx))) { - _swrast_choose_line(ctx); - } -} - - -/**************************************************************************** - * Miscellaneous device driver funcs - ***************************************************************************/ -static const struct gl_texture_format * -choose_tex_format (GLcontext *ctx, GLint internalFormat, - GLenum format, GLenum type) -{ - switch (internalFormat) { - case GL_COMPRESSED_RGB_ARB: - return &_mesa_texformat_rgb; - case GL_COMPRESSED_RGBA_ARB: - return &_mesa_texformat_rgba; - default: - return _mesa_choose_tex_format(ctx, internalFormat, format, type); - } -} - - -static void -clear_index (GLcontext *ctx, GLuint index) -{ - ((DMesaContext)ctx)->ClearIndex = index; -} - - -static void -clear_color (GLcontext *ctx, const GLfloat color[4]) -{ - GLubyte col[4]; - CLAMPED_FLOAT_TO_UBYTE(col[0], color[0]); - CLAMPED_FLOAT_TO_UBYTE(col[1], color[1]); - CLAMPED_FLOAT_TO_UBYTE(col[2], color[2]); - CLAMPED_FLOAT_TO_UBYTE(col[3], color[3]); - ((DMesaContext)ctx)->ClearColor = vl_mixrgba(col); -} - - -static void -clear (GLcontext *ctx, GLbitfield mask, GLboolean all, - GLint x, GLint y, GLint width, GLint height) -{ - const DMesaContext c = (DMesaContext)ctx; - const GLuint *colorMask = (GLuint *)&ctx->Color.ColorMask; - - /* - * Clear the specified region of the buffers indicated by 'mask' - * using the clear color or index as specified by one of the two - * functions above. - * If all==GL_TRUE, clear whole buffer, else just clear region defined - * by x,y,width,height - */ - - /* we can't handle color or index masking */ - if ((*colorMask == 0xffffffff) && (ctx->Color.IndexMask == 0xffffffff)) { - if (mask & DD_BACK_LEFT_BIT) { - int color = ((GLvisual *)(c->visual))->rgbMode ? c->ClearColor : c->ClearIndex; - - if (all) { - vl_clear(color); - } else { - vl_rect(x, c->buffer->height - y - height, width, height, color); - } - - mask &= ~DD_BACK_LEFT_BIT; - } - } - - if (mask) { - _swrast_Clear(ctx, mask, all, x, y, width, height); - } -} - - -/* - * Return the width and height of the current buffer. - * If anything special has to been done when the buffer/window is - * resized, do it now. - */ -static void -get_buffer_size (GLframebuffer *buffer, GLuint *width, GLuint *height) -{ - DMesaBuffer b = (DMesaBuffer)buffer; - - *width = b->width; - *height = b->height; -} - - -static void -viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h) -{ - /* poll for window size change and realloc software Z/stencil/etc if needed */ - _mesa_ResizeBuffersMESA(); -} - - -static const GLubyte * -get_string (GLcontext *ctx, GLenum name) -{ - switch (name) { - case GL_RENDERER: - return (const GLubyte *)"Mesa DJGPP"; - default: - return NULL; - } -} - - -static void -finish (GLcontext *ctx) -{ - /* - * XXX todo - OPTIONAL FUNCTION: implements glFinish if possible - */ -} - - -static void -flush (GLcontext *ctx) -{ - /* - * XXX todo - OPTIONAL FUNCTION: implements glFlush if possible - */ -} - - -/**************************************************************************** - * State - ***************************************************************************/ -#define DMESA_NEW_LINE (_NEW_LINE | \ - _NEW_TEXTURE | \ - _NEW_LIGHT | \ - _NEW_DEPTH | \ - _NEW_RENDERMODE | \ - _SWRAST_NEW_RASTERMASK) - -#define DMESA_NEW_TRIANGLE (_NEW_POLYGON | \ - _NEW_TEXTURE | \ - _NEW_LIGHT | \ - _NEW_DEPTH | \ - _NEW_RENDERMODE | \ - _SWRAST_NEW_RASTERMASK) - -/* Extend the software rasterizer with our line and triangle - * functions. - */ -static void -dmesa_register_swrast_functions (GLcontext *ctx) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - - swrast->choose_line = dmesa_choose_line; - swrast->choose_triangle = dmesa_choose_tri; - - swrast->InvalidateLineMask |= DMESA_NEW_LINE; - swrast->InvalidateTriangleMask |= DMESA_NEW_TRIANGLE; -} - - -static void -dmesa_update_state (GLcontext *ctx, GLuint new_state) -{ - /* Propagate statechange information to swrast and swrast_setup - * modules. The DMesa driver has no internal GL-dependent state. - */ - _swrast_InvalidateState( ctx, new_state ); - _ac_InvalidateState( ctx, new_state ); - _tnl_InvalidateState( ctx, new_state ); - _swsetup_InvalidateState( ctx, new_state ); -} - - -/* Initialize the device driver function table with the functions - * we implement in this driver. - */ -static void -dmesa_init_driver_functions (DMesaVisual visual, - struct dd_function_table *driver) -{ - driver->UpdateState = dmesa_update_state; - driver->GetString = get_string; - driver->GetBufferSize = get_buffer_size; - driver->Viewport = viewport; - driver->Flush = flush; - driver->Finish = finish; - driver->Clear = clear; - driver->ClearColor = clear_color; - driver->ClearIndex = clear_index; -#if SWTC - driver->ChooseTextureFormat = choose_tex_format; -#endif -} - - -/* Setup pointers and other driver state that is constant for the life - * of a context. - */ -static void -dmesa_init_pointers (GLcontext *ctx) -{ - struct swrast_device_driver *dd = _swrast_GetDeviceDriverReference(ctx); - - /* The span functions should be in `dmesa_update_state', but I'm - * pretty sure they will never change during the life of the Visual - */ - - /* Index span/pixel functions */ - dd->WriteCI32Span = write_index_span; - dd->WriteCI8Span = write_index8_span; - dd->WriteMonoCISpan = write_mono_index_span; - dd->WriteCI32Pixels = write_index_pixels; - dd->WriteMonoCIPixels = write_mono_index_pixels; - dd->ReadCI32Span = read_index_span; - dd->ReadCI32Pixels = read_index_pixels; - - /* RGB(A) span/pixel functions */ - dd->WriteRGBASpan = write_rgba_span; - dd->WriteRGBSpan = write_rgb_span; - dd->WriteMonoRGBASpan = write_mono_rgba_span; - dd->WriteRGBAPixels = write_rgba_pixels; - dd->WriteMonoRGBAPixels = write_mono_rgba_pixels; - dd->ReadRGBASpan = read_rgba_span; - dd->ReadRGBAPixels = read_rgba_pixels; -} -#endif /* FX */ +static DMesaContext ctx; /**************************************************************************** @@ -960,131 +98,50 @@ DMesaCreateVisual (GLint width, GLint stencilSize, GLint accumSize) { - DMesaVisual v; - GLint redBits, greenBits, blueBits, alphaBits, indexBits; - GLboolean sw_alpha; - - alphaBits = 0; - - if (!rgbFlag) { - indexBits = 8; - redBits = 0; - greenBits = 0; - blueBits = 0; - } else { - indexBits = 0; - switch (colDepth) { - case 8: - redBits = 8; - greenBits = 8; - blueBits = 8; - break; - case 15: - alphaBits = 1; - redBits = 5; - greenBits = 5; - blueBits = 5; - break; - case 16: - redBits = 5; - greenBits = 6; - blueBits = 5; - break; - case 32: - alphaBits = 8; - case 24: - redBits = 8; - greenBits = 8; - blueBits = 8; - break; - default: - return NULL; - } - } - - /* Okay, - * `alphaBits' is what we can provide - * `alphaSize' is what app requests - * - * Note that alpha buffering is required only if destination alpha is used - * in alpha blending; alpha blending modes that do not use destination alpha - * can be used w/o alpha buffer. - * - * We will use whatever ALPHA app requests. Later, in `CreateBuffer' we'll - * instruct Mesa to use its own ALPHA buffer, by passing a non-FALSE value - * for ALPHA to `_mesa_initialize_framebuffer'. - * - * Basically, 32bit modes provide ALPHA storage, but can we rely on this? - */ - alphaBits = alphaSize; - sw_alpha = (alphaBits > 0); - -#ifndef FX - if (!dbFlag) { - return NULL; - } - if ((colDepth=vl_video_init(width, height, colDepth, rgbFlag, refresh)) <= 0) { - return NULL; - } -#else /* FX */ - if (!rgbFlag) { - return NULL; - } else { - char *env; - - if ((env = getenv("MESA_FX_INFO")) && (env[0] == 'r')) { - freopen("MESA.LOG", "w", stderr); - } - - if (refresh && (((env = getenv("FX_GLIDE_REFRESH")) == NULL) || !atoi(env))) { - /* if we are passed non-zero value for refresh, we need to override - * default refresh rate. However, if FX_GLIDE_REFRESH is already set - * to 0, we won't override it, because it has a special meaning for - * DJGPP Glide3x (switch via VESA, using BIOS default refresh). - */ - char tmp[32]; - sprintf(tmp, "FX_GLIDE_REFRESH=%u", refresh); - putenv(tmp); - } - } -#endif /* FX */ - - if ((v=(DMesaVisual)CALLOC_STRUCT(dmesa_visual)) != NULL) { - /* Create core visual */ - _mesa_initialize_visual((GLvisual *)v, - rgbFlag, /* rgb */ - dbFlag, - GL_FALSE, /* stereo */ - redBits, - greenBits, - blueBits, - alphaBits, - indexBits, /* indexBits */ - depthSize, - stencilSize, - accumSize, /* accumRed */ - accumSize, /* accumGreen */ - accumSize, /* accumBlue */ - alphaBits?accumSize:0, /* accumAlpha */ - 1); /* numSamples */ - -#ifndef FX - v->sw_alpha = sw_alpha; - v->z_buffer = (depthSize > 0) ? 1 : 0; -#endif - } - - return v; + DMesaVisual visual; + GLenum format; + int fbbits; + + if (dbFlag) { + return NULL; + } + + if (!rgbFlag) { + format = OSMESA_COLOR_INDEX; + fbbits = 8; + } else if (alphaSize) { + format = OSMESA_BGRA; + fbbits = 32; + } else if (colDepth == 15 || colDepth == 16) { + format = OSMESA_RGB_565; + fbbits = 16; + } else { + format = OSMESA_BGR; + fbbits = 24; + } + + if ((visual = (DMesaVisual)CALLOC_STRUCT(dmesa_visual)) == NULL) { + return NULL; + } + + if (vl_video_init(width, height, colDepth, rgbFlag, refresh, fbbits) <= 0) { + FREE(visual); + return NULL; + } + + visual->format = format; + visual->depthBits = depthSize; + visual->stencilBits = stencilSize; + visual->accumBits = accumSize; + return visual; } void -DMesaDestroyVisual (DMesaVisual v) +DMesaDestroyVisual (DMesaVisual visual) { -#ifndef FX vl_video_exit(); -#endif - _mesa_destroy_visual((GLvisual *)v); + FREE(visual); } @@ -1093,248 +150,168 @@ DMesaCreateBuffer (DMesaVisual visual, GLint xpos, GLint ypos, GLint width, GLint height) { -#ifndef FX - DMesaBuffer b; - - if ((b=(DMesaBuffer)CALLOC_STRUCT(dmesa_buffer)) != NULL) { - _mesa_initialize_framebuffer((GLframebuffer *)b, - (GLvisual *)visual, - visual->z_buffer == 1, - ((GLvisual *)visual)->stencilBits > 0, - ((GLvisual *)visual)->accumRedBits > 0, - visual->sw_alpha); - b->xpos = xpos; - b->ypos = ypos; - b->width = width; - b->height = height; - } - - return b; -#else /* FX */ - - GLvisual *v = (GLvisual *)visual; - int i = 0, fx_attrib[32]; - - if (v->doubleBufferMode) fx_attrib[i++] = FXMESA_DOUBLEBUFFER; - if (v->depthBits > 0) { fx_attrib[i++] = FXMESA_DEPTH_SIZE; fx_attrib[i++] = v->depthBits; } - if (v->stencilBits > 0) { fx_attrib[i++] = FXMESA_STENCIL_SIZE; fx_attrib[i++] = v->stencilBits; } - if (v->accumRedBits > 0) { fx_attrib[i++] = FXMESA_ACCUM_SIZE; fx_attrib[i++] = v->accumRedBits; } - if (v->alphaBits) { fx_attrib[i++] = FXMESA_ALPHA_SIZE; fx_attrib[i++] = v->alphaBits; } - fx_attrib[i++] = FXMESA_COLORDEPTH; - fx_attrib[i++] = v->redBits + v->greenBits + v->blueBits; - fx_attrib[i] = FXMESA_NONE; - - return (DMesaBuffer)fxMesaCreateBestContext(-1, width, height, fx_attrib); -#endif /* FX */ + DMesaBuffer buffer; + GLenum type; + int bytesPerPixel; + + switch (visual->format) { + case OSMESA_COLOR_INDEX: + bytesPerPixel = 1; + type = CHAN_TYPE; + break; + case OSMESA_RGB_565: + bytesPerPixel = 2; + type = GL_UNSIGNED_SHORT_5_6_5; + break; + case OSMESA_BGR: + bytesPerPixel = 3; + type = CHAN_TYPE; + break; + default: + bytesPerPixel = 4; + type = CHAN_TYPE; + } + + if ((buffer = (DMesaBuffer)CALLOC_STRUCT(dmesa_buffer)) != NULL) { + buffer->xpos = xpos; + buffer->ypos = ypos; + buffer->width = width; + buffer->height = height; + buffer->type = type; + buffer->the_window = MALLOC(width * height * bytesPerPixel + 1); + if (buffer->the_window == NULL) { + FREE(buffer); + buffer = NULL; + } + } + + return buffer; } void -DMesaDestroyBuffer (DMesaBuffer b) +DMesaDestroyBuffer (DMesaBuffer buffer) { -#ifndef FX - if (b->the_window != NULL) { - free(b->the_window); - } - _mesa_destroy_framebuffer((GLframebuffer *)b); -#else - fxMesaDestroyContext((fxMesaContext)b); -#endif + FREE(buffer->the_window); + FREE(buffer); } DMesaContext DMesaCreateContext (DMesaVisual visual, DMesaContext share) { - GLcontext *c; -#ifndef FX - TNLcontext *tnl; - struct dd_function_table functions; - - if ((c=(GLcontext *)CALLOC_STRUCT(dmesa_context)) != NULL) { - /* Initialize device driver function table */ - _mesa_init_driver_functions(&functions); - /* override with our functions */ - dmesa_init_driver_functions(visual, &functions); - - _mesa_initialize_context(c, - (GLvisual *)visual, - (GLcontext *)share, - &functions, - (void *)c); - - _mesa_enable_sw_extensions(c); - _mesa_enable_1_3_extensions(c); - _mesa_enable_1_4_extensions(c); - _mesa_enable_1_5_extensions(c); - _mesa_enable_2_0_extensions(c); -#if SWTC - if (c->Mesa_DXTn) { - _mesa_enable_extension(c, "GL_EXT_texture_compression_s3tc"); - _mesa_enable_extension(c, "GL_S3_s3tc"); - } - _mesa_enable_extension(c, "GL_3DFX_texture_compression_FXT1"); -#endif - - /* you probably have to do a bunch of other initializations here. */ - ((DMesaContext)c)->visual = visual; - - /* Initialize the software rasterizer and helper modules. - */ - _swrast_CreateContext(c); - _ac_CreateContext(c); - _tnl_CreateContext(c); - _swsetup_CreateContext(c); - /* tnl setup */ - tnl = TNL_CONTEXT(c); - tnl->Driver.RunPipeline = _tnl_run_pipeline; - /* swrast setup */ - if (((GLvisual *)visual)->rgbMode) dmesa_register_swrast_functions(c); - dmesa_init_pointers(c); - _swsetup_Wakeup(c); - } - -#else /* FX */ - c = (GLcontext *)0xdeadbeef; -#endif /* FX */ - - return (DMesaContext)c; + DMesaContext dmesa; + if ((dmesa = (DMesaContext)CALLOC_STRUCT(dmesa_context)) != NULL) { + dmesa->osmesa = OSMesaCreateContextExt( + visual->format, + visual->depthBits, + visual->stencilBits, + visual->accumBits, + (share != NULL) ? share->osmesa : NULL); + if (dmesa->osmesa == NULL) { + FREE(dmesa); + dmesa = NULL; + } + } + return dmesa; } void -DMesaDestroyContext (DMesaContext c) +DMesaDestroyContext (DMesaContext dmesa) { -#ifndef FX - if (c) { - _swsetup_DestroyContext((GLcontext *)c); - _swrast_DestroyContext((GLcontext *)c); - _tnl_DestroyContext((GLcontext *)c); - _ac_DestroyContext((GLcontext *)c); - _mesa_destroy_context((GLcontext *)c); - } -#endif + OSMesaDestroyContext(dmesa->osmesa); + FREE(dmesa); } GLboolean DMesaMoveBuffer (GLint xpos, GLint ypos) { -#ifndef FX - GET_CURRENT_CONTEXT(ctx); - DMesaBuffer b = ((DMesaContext)ctx)->buffer; + const DMesaContext dmesa = DMesaGetCurrentContext(); + DMesaBuffer b = dmesa->buffer; - if (vl_sync_buffer(&b->the_window, xpos, ypos, b->width, b->height) == 0) { - b->xpos = xpos; - b->ypos = ypos; - return GL_TRUE; - } -#endif + if (vl_sync_buffer(&b->the_window, xpos, ypos, b->width, b->height) == 0) { + b->xpos = xpos; + b->ypos = ypos; + return GL_TRUE; + } - return GL_FALSE; + return GL_FALSE; } GLboolean DMesaResizeBuffer (GLint width, GLint height) { -#ifndef FX - GET_CURRENT_CONTEXT(ctx); - DMesaBuffer b = ((DMesaContext)ctx)->buffer; + const DMesaContext dmesa = DMesaGetCurrentContext(); + DMesaBuffer b = dmesa->buffer; - if (vl_sync_buffer(&b->the_window, b->xpos, b->ypos, width, height) == 0) { - b->width = width; - b->height = height; - return GL_TRUE; - } -#endif + if (vl_sync_buffer(&b->the_window, b->xpos, b->ypos, width, height) == 0) { + b->width = width; + b->height = height; + return GL_TRUE; + } - return GL_FALSE; + return GL_FALSE; } -/* - * Make the specified context and buffer the current one. - */ GLboolean -DMesaMakeCurrent (DMesaContext c, DMesaBuffer b) +DMesaMakeCurrent (DMesaContext dmesa, DMesaBuffer buffer) { -#ifndef FX - if ((c != NULL) && (b != NULL)) { - if (vl_sync_buffer(&b->the_window, b->xpos, b->ypos, b->width, b->height) != 0) { - return GL_FALSE; - } - - c->buffer = b; - - _mesa_make_current((GLcontext *)c, (GLframebuffer *)b); - } - else { - /* Detach */ - _mesa_make_current(NULL, NULL); - } - -#else - fxMesaMakeCurrent((fxMesaContext)b); -#endif - - return GL_TRUE; + if (dmesa == NULL || buffer == NULL) { + ctx = NULL; + return GL_TRUE; + } + if (OSMesaMakeCurrent(dmesa->osmesa, buffer->the_window, + buffer->type, + buffer->width, buffer->height) && + vl_sync_buffer(&buffer->the_window, buffer->xpos, buffer->ypos, buffer->width, buffer->height) == 0) { + OSMesaPixelStore(OSMESA_Y_UP, GL_FALSE); + dmesa->buffer = buffer; + ctx = dmesa; + return GL_TRUE; + } + return GL_FALSE; } void -DMesaSwapBuffers (DMesaBuffer b) +DMesaSwapBuffers (DMesaBuffer buffer) { - /* copy/swap back buffer to front if applicable */ -#ifndef FX - GET_CURRENT_CONTEXT(ctx); - _mesa_notifySwapBuffers(ctx); - vl_flip(); -#else - fxMesaSwapBuffers(); -#endif + /* copy/swap back buffer to front if applicable */ + GET_CURRENT_CONTEXT(ctx); + _mesa_notifySwapBuffers(ctx); + vl_flip(); + (void)buffer; } void DMesaSetCI (int ndx, GLfloat red, GLfloat green, GLfloat blue) { -#ifndef FX - vl_setCI(ndx, red, green, blue); -#endif + vl_setCI(ndx, red, green, blue); } DMesaContext DMesaGetCurrentContext (void) { - GET_CURRENT_CONTEXT(ctx); - -#ifndef FX -#else - if (ctx != NULL) { - ctx = (GLcontext *)0xdeadbeef; - } -#endif - - return (DMesaContext)ctx; + return ctx; } DMesaBuffer DMesaGetCurrentBuffer (void) { - const DMesaContext dmesa = DMesaGetCurrentContext(); + const DMesaContext dmesa = DMesaGetCurrentContext(); - if (dmesa == NULL) { - return NULL; - } + if (dmesa != NULL) { + return dmesa->buffer; + } -#ifndef FX - return dmesa->buffer; -#else - return (DMesaBuffer)fxMesaGetCurrentContext(); -#endif + return NULL; } @@ -1355,61 +332,28 @@ DMesaGetProcAddress (const char *name) int DMesaGetIntegerv (GLenum pname, GLint *params) { - switch (pname) { - case DMESA_GET_SCREEN_SIZE: - #ifndef FX - vl_get(VL_GET_SCREEN_SIZE, params); - #else - fxGetScreenGeometry(¶ms[0], ¶ms[1]); - #endif - break; - case DMESA_GET_DRIVER_CAPS: - #ifndef FX - params[0] = DMESA_DRIVER_SWDB_BIT; - #else - params[0] = DMESA_DRIVER_LLWO_BIT; - #endif - break; - case DMESA_GET_VIDEO_MODES: - #ifndef FX - return vl_get(VL_GET_VIDEO_MODES, params); - #else - return -1; /* TODO */ - #endif - case DMESA_GET_BUFFER_ADDR: { - #ifndef FX - DMesaContext c = (DMesaContext)DMesaGetCurrentContext(); - if (c != NULL) { - DMesaBuffer b = c->buffer; - if (b != NULL) { - params[0] = (GLint)b->the_window; - } - } - break; - #else - return -1; - #endif - } - default: - return -1; - } - - return 0; + switch (pname) { + case DMESA_GET_SCREEN_SIZE: + vl_get(VL_GET_SCREEN_SIZE, params); + break; + case DMESA_GET_DRIVER_CAPS: + params[0] = 0; + break; + case DMESA_GET_VIDEO_MODES: + return vl_get(VL_GET_VIDEO_MODES, params); + case DMESA_GET_BUFFER_ADDR: { + const DMesaContext dmesa = DMesaGetCurrentContext(); + if (dmesa != NULL) { + DMesaBuffer b = dmesa->buffer; + if (b != NULL) { + params[0] = (GLint)b->the_window; + } + } + break; + } + default: + return -1; + } + + return 0; } - - -#if SWTC && (((__DJGPP__ << 8) | __DJGPP_MINOR__) >= 0x204) -#include <sys/dxe.h> - -extern_asm(___dj_assert); -extern_asm(_free); -extern_asm(_malloc); -extern_asm(_memset); - -DXE_EXPORT_TABLE_AUTO (___dxe_eta___dxtn) - DXE_EXPORT_ASM (___dj_assert) - DXE_EXPORT_ASM (_free) - DXE_EXPORT_ASM (_malloc) - DXE_EXPORT_ASM (_memset) -DXE_EXPORT_END -#endif |