diff options
Diffstat (limited to 'src/mesa/drivers/dri/tdfx/tdfx_span.c')
| -rw-r--r-- | src/mesa/drivers/dri/tdfx/tdfx_span.c | 1386 |
1 files changed, 0 insertions, 1386 deletions
diff --git a/src/mesa/drivers/dri/tdfx/tdfx_span.c b/src/mesa/drivers/dri/tdfx/tdfx_span.c deleted file mode 100644 index 12524e2316a..00000000000 --- a/src/mesa/drivers/dri/tdfx/tdfx_span.c +++ /dev/null @@ -1,1386 +0,0 @@ -/* -*- mode: c; c-basic-offset: 3 -*- - * - * Copyright 2000 VA Linux Systems Inc., Fremont, California. - * - * 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 (including the next - * paragraph) 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 - * VA LINUX SYSTEMS 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. - */ - -/* - * Original rewrite: - * Gareth Hughes <gareth@valinux.com>, 29 Sep - 1 Oct 2000 - * - * Authors: - * Gareth Hughes <gareth@valinux.com> - * Brian Paul <brianp@valinux.com> - * Keith Whitwell <keith@tungstengraphics.com> - * - */ - -#include "tdfx_context.h" -#include "tdfx_lock.h" -#include "tdfx_span.h" -#include "tdfx_render.h" -#include "swrast/swrast.h" - - -#define DBG 0 - - -#define LOCAL_VARS \ - driRenderbuffer *drb = (driRenderbuffer *) rb; \ - __DRIdrawable *const dPriv = drb->dPriv; \ - GLuint pitch = drb->backBuffer ? info.strideInBytes \ - : (drb->pitch * drb->cpp); \ - const GLuint bottom = dPriv->h - 1; \ - char *buf = (char *)((char *)info.lfbPtr + \ - (dPriv->x * drb->cpp) + \ - (dPriv->y * pitch)); \ - GLuint p; \ - (void) buf; (void) p; - - -#define Y_FLIP(_y) (bottom - _y) - - -#define HW_WRITE_LOCK() \ - tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); \ - GrLfbInfo_t info; \ - FLUSH_BATCH( fxMesa ); \ - UNLOCK_HARDWARE( fxMesa ); \ - LOCK_HARDWARE( fxMesa ); \ - info.size = sizeof(GrLfbInfo_t); \ - if (fxMesa->Glide.grLfbLock(GR_LFB_WRITE_ONLY, fxMesa->DrawBuffer, \ - LFB_MODE, GR_ORIGIN_UPPER_LEFT, FXFALSE, \ - &info)) { - -#define HW_WRITE_UNLOCK() \ - fxMesa->Glide.grLfbUnlock( GR_LFB_WRITE_ONLY, fxMesa->DrawBuffer );\ - } - - -#define HW_READ_LOCK() \ - tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); \ - GrLfbInfo_t info; \ - FLUSH_BATCH( fxMesa ); \ - UNLOCK_HARDWARE( fxMesa ); \ - LOCK_HARDWARE( fxMesa ); \ - info.size = sizeof(GrLfbInfo_t); \ - if ( fxMesa->Glide.grLfbLock( GR_LFB_READ_ONLY, fxMesa->ReadBuffer, \ - LFB_MODE, GR_ORIGIN_UPPER_LEFT, FXFALSE, &info ) ) \ - { - -#define HW_READ_UNLOCK() \ - fxMesa->Glide.grLfbUnlock( GR_LFB_READ_ONLY, fxMesa->ReadBuffer );\ - } - - -#define HW_WRITE_CLIPLOOP() \ - do { \ - int _nc = fxMesa->numClipRects; \ - while (_nc--) { \ - int minx = fxMesa->pClipRects[_nc].x1 - fxMesa->x_offset; \ - int miny = fxMesa->pClipRects[_nc].y1 - fxMesa->y_offset; \ - int maxx = fxMesa->pClipRects[_nc].x2 - fxMesa->x_offset; \ - int maxy = fxMesa->pClipRects[_nc].y2 - fxMesa->y_offset; - -#define HW_READ_CLIPLOOP() \ - do { \ - const __DRIdrawable *dPriv = fxMesa->driDrawable; \ - drm_clip_rect_t *rect = dPriv->pClipRects; \ - int _nc = dPriv->numClipRects; \ - while (_nc--) { \ - const int minx = rect->x1 - fxMesa->x_offset; \ - const int miny = rect->y1 - fxMesa->y_offset; \ - const int maxx = rect->x2 - fxMesa->x_offset; \ - const int maxy = rect->y2 - fxMesa->y_offset; \ - rect++; - -#define HW_ENDCLIPLOOP() \ - } \ - } while (0) - - - -#define LFB_MODE GR_LFBWRITEMODE_565 - - -/* 16 bit, RGB565 color spanline and pixel functions */ \ - -#undef INIT_MONO_PIXEL -#define INIT_MONO_PIXEL(p, color) \ - p = TDFXPACKCOLOR565( color[0], color[1], color[2] ) - - -#define WRITE_RGBA( _x, _y, r, g, b, a ) \ - *(GLushort *)(buf + _x*2 + _y*pitch) = ((((int)r & 0xf8) << 8) | \ - (((int)g & 0xfc) << 3) | \ - (((int)b & 0xf8) >> 3)) - -#define WRITE_PIXEL( _x, _y, p ) \ - *(GLushort *)(buf + _x*2 + _y*pitch) = p - -#define READ_RGBA( rgba, _x, _y ) \ - do { \ - GLushort p = *(GLushort *)(buf + _x*2 + _y*pitch); \ - rgba[0] = (((p >> 11) & 0x1f) * 255) / 31; \ - rgba[1] = (((p >> 5) & 0x3f) * 255) / 63; \ - rgba[2] = (((p >> 0) & 0x1f) * 255) / 31; \ - rgba[3] = 0xff; \ - } while (0) - -#define TAG(x) tdfx##x##_RGB565 -#define BYTESPERPIXEL 2 -#include "spantmp.h" -#undef BYTESPERPIXEL - - -/* 16 bit, BGR565 color spanline and pixel functions */ \ -#if 0 - -#define WRITE_RGBA( _x, _y, r, g, b, a ) \ - *(GLushort *)(buf + _x*2 + _y*pitch) = ((((int)b & 0xf8) << 8) | \ - (((int)g & 0xfc) << 3) | \ - (((int)r & 0xf8) >> 3)) - -#define WRITE_PIXEL( _x, _y, p ) \ - *(GLushort *)(buf + _x*2 + _y*pitch) = p - -#define READ_RGBA( rgba, _x, _y ) \ - do { \ - GLushort p = *(GLushort *)(buf + _x*2 + _y*pitch); \ - rgba[0] = (p << 3) & 0xf8; \ - rgba[1] = (p >> 3) & 0xfc; \ - rgba[2] = (p >> 8) & 0xf8; \ - rgba[3] = 0xff; \ - } while (0) - -#define TAG(x) tdfx##x##_BGR565 -#define BYTESPERPIXEL 2 -#include "spantmp.h" -#undef BYTESPERPIXEL -#endif - - -#undef LFB_MODE -#define LFB_MODE GR_LFBWRITEMODE_888 - - -/* 24 bit, RGB888 color spanline and pixel functions */ -#undef INIT_MONO_PIXEL -#define INIT_MONO_PIXEL(p, color) \ - p = TDFXPACKCOLOR888( color[0], color[1], color[2] ) - -#define WRITE_RGBA( _x, _y, r, g, b, a ) \ - *(GLuint *)(buf + _x*3 + _y*pitch) = ((b << 0) | \ - (g << 8) | \ - (r << 16)) - -#define WRITE_PIXEL( _x, _y, p ) \ - *(GLuint *)(buf + _x*3 + _y*pitch) = p - -#define READ_RGBA( rgba, _x, _y ) \ -do { \ - GLuint p = *(GLuint *)(buf + _x*3 + _y*pitch); \ - rgba[0] = (p >> 16) & 0xff; \ - rgba[1] = (p >> 8) & 0xff; \ - rgba[2] = (p >> 0) & 0xff; \ - rgba[3] = 0xff; \ -} while (0) - -#define TAG(x) tdfx##x##_RGB888 -#define BYTESPERPIXEL 4 -#include "spantmp.h" -#undef BYTESPERPIXEL - - -#undef LFB_MODE -#define LFB_MODE GR_LFBWRITEMODE_8888 - - -/* 32 bit, ARGB8888 color spanline and pixel functions */ -#undef INIT_MONO_PIXEL -#define INIT_MONO_PIXEL(p, color) \ - p = TDFXPACKCOLOR8888( color[0], color[1], color[2], color[3] ) - -#define WRITE_RGBA( _x, _y, r, g, b, a ) \ - *(GLuint *)(buf + _x*4 + _y*pitch) = ((b << 0) | \ - (g << 8) | \ - (r << 16) | \ - (a << 24) ) - -#define WRITE_PIXEL( _x, _y, p ) \ - *(GLuint *)(buf + _x*4 + _y*pitch) = p - -#define READ_RGBA( rgba, _x, _y ) \ -do { \ - GLuint p = *(GLuint *)(buf + _x*4 + _y*pitch); \ - rgba[0] = (p >> 16) & 0xff; \ - rgba[1] = (p >> 8) & 0xff; \ - rgba[2] = (p >> 0) & 0xff; \ - rgba[3] = (p >> 24) & 0xff; \ -} while (0) - -#define TAG(x) tdfx##x##_ARGB8888 -#define BYTESPERPIXEL 4 -#include "spantmp.h" -#undef BYTESPERPIXEL - - - -/* ================================================================ - * Old span functions below... - */ - - -/* - * Examine the cliprects to generate an array of flags to indicate - * which pixels in a span are visible. Note: (x,y) is a screen - * coordinate. - */ -static void -generate_vismask(const tdfxContextPtr fxMesa, GLint x, GLint y, GLint n, - GLubyte vismask[]) -{ - GLboolean initialized = GL_FALSE; - GLint i, j; - - /* Ensure we clear the visual mask */ - memset(vismask, 0, n); - - /* turn on flags for all visible pixels */ - for (i = 0; i < fxMesa->numClipRects; i++) { - const drm_clip_rect_t *rect = &fxMesa->pClipRects[i]; - - if (y >= rect->y1 && y < rect->y2) { - if (x >= rect->x1 && x + n <= rect->x2) { - /* common case, whole span inside cliprect */ - memset(vismask, 1, n); - return; - } - if (x < rect->x2 && x + n >= rect->x1) { - /* some of the span is inside the rect */ - GLint start, end; - if (!initialized) { - memset(vismask, 0, n); - initialized = GL_TRUE; - } - if (x < rect->x1) - start = rect->x1 - x; - else - start = 0; - if (x + n > rect->x2) - end = rect->x2 - x; - else - end = n; - assert(start >= 0); - assert(end <= n); - for (j = start; j < end; j++) - vismask[j] = 1; - } - } - } -} - -/* - * Examine cliprects and determine if the given screen pixel is visible. - */ -static GLboolean -visible_pixel(const tdfxContextPtr fxMesa, int scrX, int scrY) -{ - int i; - for (i = 0; i < fxMesa->numClipRects; i++) { - const drm_clip_rect_t *rect = &fxMesa->pClipRects[i]; - if (scrX >= rect->x1 && - scrX < rect->x2 && - scrY >= rect->y1 && scrY < rect->y2) return GL_TRUE; - } - return GL_FALSE; -} - - - -/* - * Depth buffer read/write functions. - */ -/* - * To read the frame buffer, we need to lock and unlock it. The - * four macros {READ,WRITE}_FB_SPAN_{LOCK,UNLOCK} - * do this for us. - * - * Note that the lock must be matched with an unlock. These - * macros include a spare curly brace, so they must - * be syntactically matched. - * - * Note, also, that you can't lock a buffer twice with different - * modes. That is to say, you can't lock a buffer in both read - * and write modes. The strideInBytes and LFB pointer will be - * the same with read and write locks, so you can use either. - * o The HW has different state for reads and writes, so - * locking it twice may give screwy results. - * o The DRM won't let you lock twice. It hangs. This is probably - * because of the LOCK_HARDWARE IN THE *_FB_SPAN_LOCK macros, - * and could be eliminated with nonlocking lock routines. But - * what's the point after all. - */ -#define READ_FB_SPAN_LOCK(fxMesa, info, target_buffer) \ - UNLOCK_HARDWARE(fxMesa); \ - LOCK_HARDWARE(fxMesa); \ - (info).size=sizeof(info); \ - if (fxMesa->Glide.grLfbLock(GR_LFB_READ_ONLY, \ - target_buffer, \ - GR_LFBWRITEMODE_ANY, \ - GR_ORIGIN_UPPER_LEFT, \ - FXFALSE, \ - &(info))) { - -#define READ_FB_SPAN_UNLOCK(fxMesa, target_buffer) \ - fxMesa->Glide.grLfbUnlock(GR_LFB_READ_ONLY, target_buffer); \ - } else { \ - fprintf(stderr, "tdfxDriver: Can't get %s (%d) read lock\n", \ - (target_buffer == GR_BUFFER_BACKBUFFER) \ - ? "back buffer" \ - : ((target_buffer == GR_BUFFER_AUXBUFFER) \ - ? "depth buffer" \ - : "unknown buffer"), \ - target_buffer); \ - } - -#define WRITE_FB_SPAN_LOCK(fxMesa, info, target_buffer, write_mode) \ - UNLOCK_HARDWARE(fxMesa); \ - LOCK_HARDWARE(fxMesa); \ - info.size=sizeof(info); \ - if (fxMesa->Glide.grLfbLock(GR_LFB_WRITE_ONLY, \ - target_buffer, \ - write_mode, \ - GR_ORIGIN_UPPER_LEFT, \ - FXFALSE, \ - &info)) { - -#define WRITE_FB_SPAN_UNLOCK(fxMesa, target_buffer) \ - fxMesa->Glide.grLfbUnlock(GR_LFB_WRITE_ONLY, target_buffer); \ - } else { \ - fprintf(stderr, "tdfxDriver: Can't get %s (%d) write lock\n", \ - (target_buffer == GR_BUFFER_BACKBUFFER) \ - ? "back buffer" \ - : ((target_buffer == GR_BUFFER_AUXBUFFER) \ - ? "depth buffer" \ - : "unknown buffer"), \ - target_buffer); \ - } - -/* - * Because the Linear Frame Buffer is not necessarily aligned - * with the depth buffer, we have to do some fiddling - * around to get the right addresses. - * - * Perhaps a picture is in order. The Linear Frame Buffer - * looks like this: - * - * |<----------------------info.strideInBytes------------->| - * |<-----physicalStrideInBytes------->| - * +-----------------------------------+xxxxxxxxxxxxxxxxxxx+ - * | | | - * | Legal Memory | Forbidden Zone | - * | | | - * +-----------------------------------+xxxxxxxxxxxxxxxxxxx+ - * - * You can only reliably read and write legal locations. Reads - * and writes from the Forbidden Zone will return undefined values, - * and may cause segmentation faults. - * - * Now, the depth buffer may not end up in a location such each - * scan line is an LFB line. For example, the depth buffer may - * look like this: - * - * wrapped ordinary. - * +-----------------------------------+xxxxxxxxxxxxxxxxxxx+ - * |0000000000000000000000 | | back - * |1111111111111111111111 | | buffer - * |2222222222222222222222 | | - * |4096b align. padxx00000000000000000| Forbidden Zone | depth - * |0000 11111111111111111| | buffer - * |1111 22222222222222222| | - * |2222 | | - * +-----------------------------------+xxxxxxxxxxxxxxxxxxx+ - * where each number is the scan line number. We know it will - * be aligned on 128 byte boundaries, at least. Aligning this - * on a scanline boundary causes the back and depth buffers to - * thrash in the SST1 cache. (Note that the back buffer is always - * allocated at the beginning of LFB memory, and so it is always - * properly aligned with the LFB stride.) - * - * We call the beginning of the line (which is the rightmost - * part of the depth line in the picture above) the *ordinary* part - * of the scanline, and the end of the line (which is the - * leftmost part, one line below) the *wrapped* part of the scanline. - * a.) We need to know what x value to subtract from the screen - * x coordinate to index into the wrapped part. - * b.) We also need to figure out if we need to read from the ordinary - * part scan line, or from the wrapped part of the scan line. - * - * [ad a] - * The first wrapped x coordinate is that coordinate such that - * depthBufferOffset&(info.strideInBytes) + x*elmentSize {*} - * > physicalStrideInBytes - * where depthBufferOffset is the LFB distance in bytes - * from the back buffer to the depth buffer. The expression - * depthBufferOffset&(info.strideInBytes) - * is then the offset (in bytes) from the beginining of (any) - * depth buffer line to first element in the line. - * Simplifying inequation {*} above we see that x is the smallest - * value such that - * x*elementSize > physicalStrideInBytes {**} - * - depthBufferOffset&(info.strideInBytes) - * Now, we know that both the summands on the right are multiples of - * 128, and elementSize <= 4, so if equality holds in {**}, x would - * be a multiple of 32. Thus we can set x to - * xwrapped = (physicalStrideInBytes - * - depthBufferOffset&(info.strideInBytes))/elementSize - * + 1 - * - * [ad b] - * Question b is now simple. We read from the wrapped scan line if - * x is greater than xwrapped. - */ -#define TILE_WIDTH_IN_BYTES 128 -#define TILE_WIDTH_IN_ZOXELS(bpz) (TILE_WIDTH_IN_BYTES/(bpz)) -#define TILE_HEIGHT_IN_LINES 32 -typedef struct -{ - void *lfbPtr; - void *lfbWrapPtr; - FxU32 LFBStrideInElts; - GLint firstWrappedX; -} -LFBParameters; - -/* - * We need information about the back buffer. Note that - * this function *cannot be called* while the aux buffer - * is locked, or the caller will hang. - * - * Only Glide knows the LFB address of the back and depth - * offsets. The upper levels of Mesa know the depth offset, - * but that is not in LFB space, it is tiled memory space, - * and is not useable for us. - */ -static void -GetBackBufferInfo(tdfxContextPtr fxMesa, GrLfbInfo_t * backBufferInfo) -{ - READ_FB_SPAN_LOCK(fxMesa, *backBufferInfo, GR_BUFFER_BACKBUFFER); - READ_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_BACKBUFFER); -} - -static void -GetFbParams(tdfxContextPtr fxMesa, - GrLfbInfo_t * info, - GrLfbInfo_t * backBufferInfo, - LFBParameters * ReadParamsp, FxU32 elementSize) -{ - FxU32 physicalStrideInBytes, bufferOffset; - FxU32 strideInBytes = info->strideInBytes; - char *lfbPtr = (char *) (info->lfbPtr); /* For arithmetic, use char * */ - - /* - * These two come directly from the info structure. - */ - ReadParamsp->lfbPtr = (void *) lfbPtr; - ReadParamsp->LFBStrideInElts = strideInBytes / elementSize; - /* - * Now, calculate the value of firstWrappedX. - * - * The physical stride is the screen width in bytes rounded up to - * the next highest multiple of 128 bytes. Note that this fails - * when TILE_WIDTH_IN_BYTES is not a power of two. - * - * The buffer Offset is the distance between the beginning of - * the LFB space, which is the beginning of the back buffer, - * and the buffer we are gathering information about. - * We want to make this routine usable for operations on the - * back buffer, though we don't actually use it on the back - * buffer. Note, then, that if bufferOffset == 0, the firstWrappedX - * is in the forbidden zone, and is therefore never reached. - * - * Note that if - * physicalStrideInBytes - * < bufferOffset&(info->strideInBytes-1) - * the buffer begins in the forbidden zone. We assert for this. - */ - bufferOffset = (FxU32)(lfbPtr - (char *) backBufferInfo->lfbPtr); - physicalStrideInBytes - = (fxMesa->screen_width * elementSize + TILE_WIDTH_IN_BYTES - 1) - & ~(TILE_WIDTH_IN_BYTES - 1); - assert(physicalStrideInBytes > (bufferOffset & (strideInBytes - 1))); - ReadParamsp->firstWrappedX - = (physicalStrideInBytes - - (bufferOffset & (strideInBytes - 1))) / elementSize; - /* - * This is the address of the next physical line. - */ - ReadParamsp->lfbWrapPtr - = (void *) ((char *) backBufferInfo->lfbPtr - + (bufferOffset & ~(strideInBytes - 1)) - + (TILE_HEIGHT_IN_LINES) * strideInBytes); -} - -/* - * These macros fetch data from the frame buffer. The type is - * the type of data we want to fetch. It should match the type - * whose size was used with GetFbParams to fill in the structure - * in *ReadParamsp. We have a macro to read the ordinary - * part, a second macro to read the wrapped part, and one which - * will do either. When we are reading a span, we will know - * when the ordinary part ends, so there's no need to test for - * it. However, when reading and writing pixels, we don't - * necessarily know. I suppose it's a matter of taste whether - * it's better in the macro or in the call. - * - * Recall that x and y are screen coordinates. - */ -#define GET_ORDINARY_FB_DATA(ReadParamsp, type, x, y) \ - (((type *)((ReadParamsp)->lfbPtr)) \ - [(y) * ((ReadParamsp)->LFBStrideInElts) \ - + (x)]) -#define GET_WRAPPED_FB_DATA(ReadParamsp, type, x, y) \ - (((type *)((ReadParamsp)->lfbWrapPtr)) \ - [((y)) * ((ReadParamsp)->LFBStrideInElts) \ - + ((x) - (ReadParamsp)->firstWrappedX)]) -#define GET_FB_DATA(ReadParamsp, type, x, y) \ - (((x) < (ReadParamsp)->firstWrappedX) \ - ? GET_ORDINARY_FB_DATA(ReadParamsp, type, x, y) \ - : GET_WRAPPED_FB_DATA(ReadParamsp, type, x, y)) -#define PUT_ORDINARY_FB_DATA(ReadParamsp, type, x, y, value) \ - (GET_ORDINARY_FB_DATA(ReadParamsp, type, x, y) = (type)(value)) -#define PUT_WRAPPED_FB_DATA(ReadParamsp, type, x, y, value) \ - (GET_WRAPPED_FB_DATA(ReadParamsp, type, x, y) = (type)(value)) -#define PUT_FB_DATA(ReadParamsp, type, x, y, value) \ - do { \ - if ((x) < (ReadParamsp)->firstWrappedX) \ - PUT_ORDINARY_FB_DATA(ReadParamsp, type, x, y, value); \ - else \ - PUT_WRAPPED_FB_DATA(ReadParamsp, type, x, y, value); \ - } while (0) - - -static void -tdfxDDWriteDepthSpan(struct gl_context * ctx, struct gl_renderbuffer *rb, - GLuint n, GLint x, GLint y, const void *values, - const GLubyte mask[]) -{ - const GLuint *depth = (const GLuint *) values; - tdfxContextPtr fxMesa = (tdfxContextPtr) ctx->DriverCtx; - GLint bottom = fxMesa->y_offset + fxMesa->height - 1; - GLuint depth_size = fxMesa->glCtx->Visual.depthBits; - GLuint stencil_size = fxMesa->glCtx->Visual.stencilBits; - GrLfbInfo_t info; - GLubyte visMask[MAX_WIDTH]; - - if (MESA_VERBOSE & VERBOSE_DRIVER) { - fprintf(stderr, "tdfxmesa: tdfxDDWriteDepthSpan(...)\n"); - } - - assert((depth_size == 16) || (depth_size == 24) || (depth_size == 32)); - /* - * Convert x and y to screen coordinates. - */ - x += fxMesa->x_offset; - y = bottom - y; - if (mask) { - GLint i; - GLushort d16; - GrLfbInfo_t backBufferInfo; - - switch (depth_size) { - case 16: - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - WRITE_FB_SPAN_LOCK(fxMesa, info, GR_BUFFER_AUXBUFFER, - GR_LFBWRITEMODE_ANY); - generate_vismask(fxMesa, x, y, n, visMask); - { - LFBParameters ReadParams; - int wrappedPartStart; - GetFbParams(fxMesa, &info, &backBufferInfo, - &ReadParams, sizeof(GLushort)); - if (ReadParams.firstWrappedX <= x) { - wrappedPartStart = 0; - } - else if (n <= (ReadParams.firstWrappedX - x)) { - wrappedPartStart = n; - } - else { - wrappedPartStart = (ReadParams.firstWrappedX - x); - } - for (i = 0; i < wrappedPartStart; i++) { - if (mask[i] && visMask[i]) { - d16 = depth[i]; - PUT_ORDINARY_FB_DATA(&ReadParams, GLushort, x + i, y, d16); - } - } - for (; i < n; i++) { - if (mask[i] && visMask[i]) { - d16 = depth[i]; - PUT_WRAPPED_FB_DATA(&ReadParams, GLushort, x + i, y, d16); - } - } - } - WRITE_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); - break; - case 24: - case 32: - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - WRITE_FB_SPAN_LOCK(fxMesa, info, GR_BUFFER_AUXBUFFER, - GR_LFBWRITEMODE_ANY); - generate_vismask(fxMesa, x, y, n, visMask); - { - LFBParameters ReadParams; - int wrappedPartStart; - GetFbParams(fxMesa, &info, &backBufferInfo, - &ReadParams, sizeof(GLuint)); - if (ReadParams.firstWrappedX <= x) { - wrappedPartStart = 0; - } - else if (n <= (ReadParams.firstWrappedX - x)) { - wrappedPartStart = n; - } - else { - wrappedPartStart = (ReadParams.firstWrappedX - x); - } - for (i = 0; i < wrappedPartStart; i++) { - GLuint d32; - if (mask[i] && visMask[i]) { - if (stencil_size > 0) { - d32 = - GET_ORDINARY_FB_DATA(&ReadParams, GLuint, - x + i, y); - d32 = - (d32 & 0xFF000000) | (depth[i] & 0x00FFFFFF); - } - else { - d32 = depth[i]; - } - PUT_ORDINARY_FB_DATA(&ReadParams, GLuint, x + i, y, d32); - } - } - for (; i < n; i++) { - GLuint d32; - if (mask[i] && visMask[i]) { - if (stencil_size > 0) { - d32 = - GET_WRAPPED_FB_DATA(&ReadParams, GLuint, - x + i, y); - d32 = - (d32 & 0xFF000000) | (depth[i] & 0x00FFFFFF); - } - else { - d32 = depth[i]; - } - PUT_WRAPPED_FB_DATA(&ReadParams, GLuint, x + i, y, d32); - } - } - } - WRITE_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); - break; - } - } - else { - GLint i; - GLuint d32; - GLushort d16; - GrLfbInfo_t backBufferInfo; - - switch (depth_size) { - case 16: - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - WRITE_FB_SPAN_LOCK(fxMesa, info, - GR_BUFFER_AUXBUFFER, GR_LFBWRITEMODE_ANY); - generate_vismask(fxMesa, x, y, n, visMask); - { - LFBParameters ReadParams; - GLuint wrappedPartStart; - GetFbParams(fxMesa, &info, &backBufferInfo, - &ReadParams, sizeof(GLushort)); - if (ReadParams.firstWrappedX <= x) { - wrappedPartStart = 0; - } - else if (n <= (ReadParams.firstWrappedX - x)) { - wrappedPartStart = n; - } - else { - wrappedPartStart = (ReadParams.firstWrappedX - x); - } - for (i = 0; i < wrappedPartStart; i++) { - if (visMask[i]) { - d16 = depth[i]; - PUT_ORDINARY_FB_DATA(&ReadParams, - GLushort, - x + i, y, - d16); - } - } - for (; i < n; i++) { - if (visMask[i]) { - d16 = depth[i]; - PUT_WRAPPED_FB_DATA(&ReadParams, - GLushort, - x + i, y, - d16); - } - } - } - WRITE_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); - break; - case 24: - case 32: - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - WRITE_FB_SPAN_LOCK(fxMesa, info, - GR_BUFFER_AUXBUFFER, GR_LFBWRITEMODE_ANY); - generate_vismask(fxMesa, x, y, n, visMask); - { - LFBParameters ReadParams; - GLuint wrappedPartStart; - - GetFbParams(fxMesa, &info, &backBufferInfo, - &ReadParams, sizeof(GLuint)); - if (ReadParams.firstWrappedX <= x) { - wrappedPartStart = 0; - } - else if (n <= (ReadParams.firstWrappedX - x)) { - wrappedPartStart = n; - } - else { - wrappedPartStart = (ReadParams.firstWrappedX - x); - } - for (i = 0; i < wrappedPartStart; i++) { - if (visMask[i]) { - if (stencil_size > 0) { - d32 = GET_ORDINARY_FB_DATA(&ReadParams, GLuint, x + i, y); - d32 = - (d32 & 0xFF000000) | (depth[i] & 0x00FFFFFF); - } - else { - d32 = depth[i]; - } - PUT_ORDINARY_FB_DATA(&ReadParams, GLuint, x + i, y, d32); - } - } - for (; i < n; i++) { - if (visMask[i]) { - if (stencil_size > 0) { - d32 = GET_WRAPPED_FB_DATA(&ReadParams, GLuint, x + i, y); - d32 = - (d32 & 0xFF000000) | (depth[i] & 0x00FFFFFF); - } - else { - d32 = depth[i]; - } - PUT_WRAPPED_FB_DATA(&ReadParams, GLuint, x + i, y, d32); - } - } - } - WRITE_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); - break; - } - } -} - -static void -tdfxDDWriteMonoDepthSpan(struct gl_context * ctx, struct gl_renderbuffer *rb, - GLuint n, GLint x, GLint y, const void *value, - const GLubyte mask[]) -{ - GLuint depthVal = *((GLuint *) value); - GLuint depths[MAX_WIDTH]; - GLuint i; - for (i = 0; i < n; i++) - depths[i] = depthVal; - tdfxDDWriteDepthSpan(ctx, rb, n, x, y, depths, mask); -} - - -static void -tdfxDDReadDepthSpan(struct gl_context * ctx, struct gl_renderbuffer *rb, - GLuint n, GLint x, GLint y, void *values) -{ - GLuint *depth = (GLuint *) values; - tdfxContextPtr fxMesa = (tdfxContextPtr) ctx->DriverCtx; - GLint bottom = fxMesa->height + fxMesa->y_offset - 1; - GLuint i; - GLuint depth_size = fxMesa->glCtx->Visual.depthBits; - GrLfbInfo_t info; - - if (MESA_VERBOSE & VERBOSE_DRIVER) { - fprintf(stderr, "tdfxmesa: tdfxDDReadDepthSpan(...)\n"); - } - - /* - * Convert to screen coordinates. - */ - x += fxMesa->x_offset; - y = bottom - y; - switch (depth_size) { - case 16: - { - LFBParameters ReadParams; - GrLfbInfo_t backBufferInfo; - int wrappedPartStart; - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - READ_FB_SPAN_LOCK(fxMesa, info, GR_BUFFER_AUXBUFFER); - GetFbParams(fxMesa, &info, &backBufferInfo, - &ReadParams, sizeof(GLushort)); - if (ReadParams.firstWrappedX <= x) { - wrappedPartStart = 0; - } - else if (n <= (ReadParams.firstWrappedX - x)) { - wrappedPartStart = n; - } - else { - wrappedPartStart = (ReadParams.firstWrappedX - x); - } - /* - * Read the line. - */ - for (i = 0; i < wrappedPartStart; i++) { - depth[i] = - GET_ORDINARY_FB_DATA(&ReadParams, GLushort, x + i, y); - } - for (; i < n; i++) { - depth[i] = GET_WRAPPED_FB_DATA(&ReadParams, GLushort, - x + i, y); - } - READ_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); - break; - } - case 24: - case 32: - { - LFBParameters ReadParams; - GrLfbInfo_t backBufferInfo; - int wrappedPartStart; - GLuint stencil_size = fxMesa->glCtx->Visual.stencilBits; - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - READ_FB_SPAN_LOCK(fxMesa, info, GR_BUFFER_AUXBUFFER); - GetFbParams(fxMesa, &info, &backBufferInfo, - &ReadParams, sizeof(GLuint)); - if (ReadParams.firstWrappedX <= x) { - wrappedPartStart = 0; - } - else if (n <= (ReadParams.firstWrappedX - x)) { - wrappedPartStart = n; - } - else { - wrappedPartStart = (ReadParams.firstWrappedX - x); - } - /* - * Read the line. - */ - for (i = 0; i < wrappedPartStart; i++) { - const GLuint mask = - (stencil_size > 0) ? 0x00FFFFFF : 0xFFFFFFFF; - depth[i] = - GET_ORDINARY_FB_DATA(&ReadParams, GLuint, x + i, y); - depth[i] &= mask; - } - for (; i < n; i++) { - const GLuint mask = - (stencil_size > 0) ? 0x00FFFFFF : 0xFFFFFFFF; - depth[i] = GET_WRAPPED_FB_DATA(&ReadParams, GLuint, x + i, y); - depth[i] &= mask; - } - READ_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); - break; - } - } -} - - -static void -tdfxDDWriteDepthPixels(struct gl_context * ctx, struct gl_renderbuffer *rb, - GLuint n, const GLint x[], const GLint y[], - const void *values, const GLubyte mask[]) -{ - const GLuint *depth = (const GLuint *) values; - tdfxContextPtr fxMesa = (tdfxContextPtr) ctx->DriverCtx; - GLint bottom = fxMesa->height + fxMesa->y_offset - 1; - GLuint i; - GLushort d16; - GLuint d32; - GLuint depth_size = fxMesa->glCtx->Visual.depthBits; - GLuint stencil_size = fxMesa->glCtx->Visual.stencilBits; - GrLfbInfo_t info; - int xpos; - int ypos; - GrLfbInfo_t backBufferInfo; - - if (MESA_VERBOSE & VERBOSE_DRIVER) { - fprintf(stderr, "tdfxmesa: tdfxDDWriteDepthPixels(...)\n"); - } - - switch (depth_size) { - case 16: - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - WRITE_FB_SPAN_LOCK(fxMesa, info, - GR_BUFFER_AUXBUFFER, GR_LFBWRITEMODE_ANY); - { - LFBParameters ReadParams; - GetFbParams(fxMesa, &info, &backBufferInfo, - &ReadParams, sizeof(GLushort)); - for (i = 0; i < n; i++) { - if ((!mask || mask[i]) && visible_pixel(fxMesa, x[i], y[i])) { - xpos = x[i] + fxMesa->x_offset; - ypos = bottom - y[i]; - d16 = depth[i]; - PUT_FB_DATA(&ReadParams, GLushort, xpos, ypos, d16); - } - } - } - WRITE_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); - break; - case 24: - case 32: - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - WRITE_FB_SPAN_LOCK(fxMesa, info, - GR_BUFFER_AUXBUFFER, GR_LFBWRITEMODE_ANY); - { - LFBParameters ReadParams; - GetFbParams(fxMesa, &info, &backBufferInfo, - &ReadParams, sizeof(GLuint)); - for (i = 0; i < n; i++) { - if (!mask || mask[i]) { - if (visible_pixel(fxMesa, x[i], y[i])) { - xpos = x[i] + fxMesa->x_offset; - ypos = bottom - y[i]; - if (stencil_size > 0) { - d32 = - GET_FB_DATA(&ReadParams, GLuint, xpos, ypos); - d32 = (d32 & 0xFF000000) | (depth[i] & 0xFFFFFF); - } - else { - d32 = depth[i]; - } - PUT_FB_DATA(&ReadParams, GLuint, xpos, ypos, d32); - } - } - } - } - WRITE_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); - break; - } -} - - -static void -tdfxDDReadDepthPixels(struct gl_context * ctx, struct gl_renderbuffer *rb, GLuint n, - const GLint x[], const GLint y[], void *values) -{ - GLuint *depth = (GLuint *) values; - tdfxContextPtr fxMesa = (tdfxContextPtr) ctx->DriverCtx; - GLint bottom = fxMesa->height + fxMesa->y_offset - 1; - GLuint i; - GLuint depth_size = fxMesa->glCtx->Visual.depthBits; - GLushort d16; - int xpos; - int ypos; - GrLfbInfo_t info; - GLuint stencil_size; - GrLfbInfo_t backBufferInfo; - - if (MESA_VERBOSE & VERBOSE_DRIVER) { - fprintf(stderr, "tdfxmesa: tdfxDDReadDepthPixels(...)\n"); - } - - assert((depth_size == 16) || (depth_size == 24) || (depth_size == 32)); - switch (depth_size) { - case 16: - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - READ_FB_SPAN_LOCK(fxMesa, info, GR_BUFFER_AUXBUFFER); - { - LFBParameters ReadParams; - GetFbParams(fxMesa, &info, &backBufferInfo, - &ReadParams, sizeof(GLushort)); - for (i = 0; i < n; i++) { - /* - * Convert to screen coordinates. - */ - xpos = x[i] + fxMesa->x_offset; - ypos = bottom - y[i]; - d16 = GET_FB_DATA(&ReadParams, GLushort, xpos, ypos); - depth[i] = d16; - } - } - READ_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); - break; - case 24: - case 32: - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - READ_FB_SPAN_LOCK(fxMesa, info, GR_BUFFER_AUXBUFFER); - stencil_size = fxMesa->glCtx->Visual.stencilBits; - { - LFBParameters ReadParams; - GetFbParams(fxMesa, &info, &backBufferInfo, - &ReadParams, sizeof(GLuint)); - for (i = 0; i < n; i++) { - GLuint d32; - - /* - * Convert to screen coordinates. - */ - xpos = x[i] + fxMesa->x_offset; - ypos = bottom - y[i]; - d32 = GET_FB_DATA(&ReadParams, GLuint, xpos, ypos); - if (stencil_size > 0) { - d32 &= 0x00FFFFFF; - } - depth[i] = d32; - } - } - READ_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); - break; - default: - assert(0); - } -} - -/* - * Stencil buffer read/write functions. - */ -#define EXTRACT_S_FROM_ZS(zs) (((zs) >> 24) & 0xFF) -#define EXTRACT_Z_FROM_ZS(zs) ((zs) & 0xffffff) -#define BUILD_ZS(z, s) (((s) << 24) | (z)) - -static void -write_stencil_span(struct gl_context * ctx, struct gl_renderbuffer *rb, - GLuint n, GLint x, GLint y, - const void *values, const GLubyte mask[]) -{ - const GLubyte *stencil = (const GLubyte *) values; - tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); - GrLfbInfo_t info; - GrLfbInfo_t backBufferInfo; - - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - WRITE_FB_SPAN_LOCK(fxMesa, info, GR_BUFFER_AUXBUFFER, GR_LFBWRITEMODE_ANY); - { - const GLint winY = fxMesa->y_offset + fxMesa->height - 1; - const GLint winX = fxMesa->x_offset; - const GLint scrX = winX + x; - const GLint scrY = winY - y; - LFBParameters ReadParams; - GLubyte visMask[MAX_WIDTH]; - GLuint i; - int wrappedPartStart; - - GetFbParams(fxMesa, &info, &backBufferInfo, &ReadParams, - sizeof(GLuint)); - if (ReadParams.firstWrappedX <= x) { - wrappedPartStart = 0; - } - else if (n <= (ReadParams.firstWrappedX - x)) { - wrappedPartStart = n; - } - else { - wrappedPartStart = (ReadParams.firstWrappedX - x); - } - generate_vismask(fxMesa, scrX, scrY, n, visMask); - for (i = 0; i < wrappedPartStart; i++) { - if (visMask[i] && (!mask || mask[i])) { - GLuint z = GET_ORDINARY_FB_DATA(&ReadParams, GLuint, - scrX + i, scrY) & 0x00FFFFFF; - z |= (stencil[i] & 0xFF) << 24; - PUT_ORDINARY_FB_DATA(&ReadParams, GLuint, scrX + i, scrY, z); - } - } - for (; i < n; i++) { - if (visMask[i] && (!mask || mask[i])) { - GLuint z = GET_WRAPPED_FB_DATA(&ReadParams, GLuint, - scrX + i, scrY) & 0x00FFFFFF; - z |= (stencil[i] & 0xFF) << 24; - PUT_WRAPPED_FB_DATA(&ReadParams, GLuint, scrX + i, scrY, z); - } - } - } - WRITE_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); -} - - -static void -write_mono_stencil_span(struct gl_context * ctx, struct gl_renderbuffer *rb, - GLuint n, GLint x, GLint y, - const void *value, const GLubyte mask[]) -{ - GLbyte stencilVal = *((GLbyte *) value); - GLbyte stencils[MAX_WIDTH]; - GLuint i; - for (i = 0; i < n; i++) - stencils[i] = stencilVal; - write_stencil_span(ctx, rb, n, x, y, stencils, mask); -} - - -static void -read_stencil_span(struct gl_context * ctx, struct gl_renderbuffer *rb, - GLuint n, GLint x, GLint y, - void *values) -{ - GLubyte *stencil = (GLubyte *) values; - tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); - GrLfbInfo_t info; - GrLfbInfo_t backBufferInfo; - - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - READ_FB_SPAN_LOCK(fxMesa, info, GR_BUFFER_AUXBUFFER); - { - const GLint winY = fxMesa->y_offset + fxMesa->height - 1; - const GLint winX = fxMesa->x_offset; - GLuint i; - LFBParameters ReadParams; - int wrappedPartStart; - - /* - * Convert to screen coordinates. - */ - x += winX; - y = winY - y; - GetFbParams(fxMesa, &info, &backBufferInfo, &ReadParams, - sizeof(GLuint)); - if (ReadParams.firstWrappedX <= x) { - wrappedPartStart = 0; - } - else if (n <= (ReadParams.firstWrappedX - x)) { - wrappedPartStart = n; - } - else { - wrappedPartStart = (ReadParams.firstWrappedX - x); - } - for (i = 0; i < wrappedPartStart; i++) { - stencil[i] = (GET_ORDINARY_FB_DATA(&ReadParams, GLuint, - x + i, y) >> 24) & 0xFF; - } - for (; i < n; i++) { - stencil[i] = (GET_WRAPPED_FB_DATA(&ReadParams, GLuint, - x + i, y) >> 24) & 0xFF; - } - } - READ_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); -} - - -static void -write_stencil_pixels(struct gl_context * ctx, struct gl_renderbuffer *rb, - GLuint n, const GLint x[], const GLint y[], - const void *values, const GLubyte mask[]) -{ - const GLubyte *stencil = (const GLubyte *) values; - tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); - GrLfbInfo_t info; - GrLfbInfo_t backBufferInfo; - - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - WRITE_FB_SPAN_LOCK(fxMesa, info, GR_BUFFER_AUXBUFFER, GR_LFBWRITEMODE_ANY); - { - const GLint winY = fxMesa->y_offset + fxMesa->height - 1; - const GLint winX = fxMesa->x_offset; - LFBParameters ReadParams; - GLuint i; - - GetFbParams(fxMesa, &info, &backBufferInfo, &ReadParams, - sizeof(GLuint)); - for (i = 0; i < n; i++) { - const GLint scrX = winX + x[i]; - const GLint scrY = winY - y[i]; - if ((!mask || mask[i]) && visible_pixel(fxMesa, scrX, scrY)) { - GLuint z = - GET_FB_DATA(&ReadParams, GLuint, scrX, scrY) & 0x00FFFFFF; - z |= (stencil[i] & 0xFF) << 24; - PUT_FB_DATA(&ReadParams, GLuint, scrX, scrY, z); - } - } - } - WRITE_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); -} - - -static void -read_stencil_pixels(struct gl_context * ctx, struct gl_renderbuffer *rb, - GLuint n, const GLint x[], const GLint y[], - void *values) -{ - GLubyte *stencil = (GLubyte *) values; - tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); - GrLfbInfo_t info; - GrLfbInfo_t backBufferInfo; - - GetBackBufferInfo(fxMesa, &backBufferInfo); - /* - * Note that the _LOCK macro adds a curly brace, - * and the UNLOCK macro removes it. - */ - READ_FB_SPAN_LOCK(fxMesa, info, GR_BUFFER_AUXBUFFER); - { - const GLint winY = fxMesa->y_offset + fxMesa->height - 1; - const GLint winX = fxMesa->x_offset; - GLuint i; - LFBParameters ReadParams; - - GetFbParams(fxMesa, &info, &backBufferInfo, &ReadParams, - sizeof(GLuint)); - for (i = 0; i < n; i++) { - const GLint scrX = winX + x[i]; - const GLint scrY = winY - y[i]; - stencil[i] = - (GET_FB_DATA(&ReadParams, GLuint, scrX, scrY) >> 24) & 0xFF; - } - } - READ_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); -} - -#define VISUAL_EQUALS_RGBA(vis, r, g, b, a) \ - ((vis.redBits == r) && \ - (vis.greenBits == g) && \ - (vis.blueBits == b) && \ - (vis.alphaBits == a)) - - - - -/**********************************************************************/ -/* Locking for swrast */ -/**********************************************************************/ - - -static void tdfxSpanRenderStart( struct gl_context *ctx ) -{ - tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); - LOCK_HARDWARE(fxMesa); -} - -static void tdfxSpanRenderFinish( struct gl_context *ctx ) -{ - tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); - _swrast_flush( ctx ); - UNLOCK_HARDWARE(fxMesa); -} - -/**********************************************************************/ -/* Initialize swrast device driver */ -/**********************************************************************/ - -void tdfxDDInitSpanFuncs( struct gl_context *ctx ) -{ - struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference( ctx ); - swdd->SpanRenderStart = tdfxSpanRenderStart; - swdd->SpanRenderFinish = tdfxSpanRenderFinish; -} - - - -/** - * Plug in the Get/Put routines for the given driRenderbuffer. - */ -void -tdfxSetSpanFunctions(driRenderbuffer *drb, const struct gl_config *vis) -{ - if (drb->Base.InternalFormat == GL_RGBA) { - if (vis->redBits == 5 && vis->greenBits == 6 && vis->blueBits == 5) { - tdfxInitPointers_RGB565(&drb->Base); - } - else if (vis->redBits == 8 && vis->greenBits == 8 - && vis->blueBits == 8 && vis->alphaBits == 0) { - tdfxInitPointers_RGB888(&drb->Base); - } - else if (vis->redBits == 8 && vis->greenBits == 8 - && vis->blueBits == 8 && vis->alphaBits == 8) { - tdfxInitPointers_ARGB8888(&drb->Base); - } - else { - _mesa_problem(NULL, "problem in tdfxSetSpanFunctions"); - } - } - else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT16 || - drb->Base.InternalFormat == GL_DEPTH_COMPONENT24) { - drb->Base.GetRow = tdfxDDReadDepthSpan; - drb->Base.GetValues = tdfxDDReadDepthPixels; - drb->Base.PutRow = tdfxDDWriteDepthSpan; - drb->Base.PutMonoRow = tdfxDDWriteMonoDepthSpan; - drb->Base.PutValues = tdfxDDWriteDepthPixels; - drb->Base.PutMonoValues = NULL; - } - else if (drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) { - drb->Base.GetRow = read_stencil_span; - drb->Base.GetValues = read_stencil_pixels; - drb->Base.PutRow = write_stencil_span; - drb->Base.PutMonoRow = write_mono_stencil_span; - drb->Base.PutValues = write_stencil_pixels; - drb->Base.PutMonoValues = NULL; - } -} |