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Diffstat (limited to 'src/mesa/drivers/dri/i915tex/intel_span.c')
-rw-r--r--src/mesa/drivers/dri/i915tex/intel_span.c409
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diff --git a/src/mesa/drivers/dri/i915tex/intel_span.c b/src/mesa/drivers/dri/i915tex/intel_span.c
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index 00000000000..ab0874e4fd6
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+++ b/src/mesa/drivers/dri/i915tex/intel_span.c
@@ -0,0 +1,409 @@
+/**************************************************************************
+ *
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+#include "glheader.h"
+#include "macros.h"
+#include "mtypes.h"
+#include "colormac.h"
+
+#include "intel_fbo.h"
+#include "intel_screen.h"
+#include "intel_span.h"
+#include "intel_regions.h"
+#include "intel_ioctl.h"
+#include "intel_tex.h"
+
+#include "swrast/swrast.h"
+
+/*
+ break intelWriteRGBASpan_ARGB8888
+*/
+
+#undef DBG
+#define DBG 0
+
+#define LOCAL_VARS \
+ struct intel_context *intel = intel_context(ctx); \
+ struct intel_renderbuffer *irb = intel_renderbuffer(rb); \
+ const GLint yScale = irb->RenderToTexture ? 1 : -1; \
+ const GLint yBias = irb->RenderToTexture ? 0 : irb->Base.Height - 1; \
+ GLubyte *buf = (GLubyte *) irb->pfMap \
+ + (intel->drawY * irb->pfPitch + intel->drawX) * irb->region->cpp;\
+ GLuint p; \
+ assert(irb->pfMap);\
+ (void) p;
+
+/* XXX FBO: this is identical to the macro in spantmp2.h except we get
+ * the cliprect info from the context, not the driDrawable.
+ * Move this into spantmp2.h someday.
+ */
+#define HW_CLIPLOOP() \
+ do { \
+ int _nc = intel->numClipRects; \
+ while ( _nc-- ) { \
+ int minx = intel->pClipRects[_nc].x1 - intel->drawX; \
+ int miny = intel->pClipRects[_nc].y1 - intel->drawY; \
+ int maxx = intel->pClipRects[_nc].x2 - intel->drawX; \
+ int maxy = intel->pClipRects[_nc].y2 - intel->drawY;
+
+
+
+
+#define Y_FLIP(_y) ((_y) * yScale + yBias)
+
+#define HW_LOCK()
+
+#define HW_UNLOCK()
+
+/* 16 bit, RGB565 color spanline and pixel functions
+ */
+#define SPANTMP_PIXEL_FMT GL_RGB
+#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
+
+#define TAG(x) intel##x##_RGB565
+#define TAG2(x,y) intel##x##_RGB565##y
+#define GET_PTR(X,Y) (buf + ((Y) * irb->pfPitch + (X)) * 2)
+#include "spantmp2.h"
+
+/* 32 bit, ARGB8888 color spanline and pixel functions
+ */
+#define SPANTMP_PIXEL_FMT GL_BGRA
+#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
+
+#define TAG(x) intel##x##_ARGB8888
+#define TAG2(x,y) intel##x##_ARGB8888##y
+#define GET_PTR(X,Y) (buf + ((Y) * irb->pfPitch + (X)) * 4)
+#include "spantmp2.h"
+
+
+#define LOCAL_DEPTH_VARS \
+ struct intel_context *intel = intel_context(ctx); \
+ struct intel_renderbuffer *irb = intel_renderbuffer(rb); \
+ const GLuint pitch = irb->pfPitch/***XXX region->pitch*/; /* in pixels */ \
+ const GLint yScale = irb->RenderToTexture ? 1 : -1; \
+ const GLint yBias = irb->RenderToTexture ? 0 : irb->Base.Height - 1; \
+ char *buf = (char *) irb->pfMap/*XXX use region->map*/ + \
+ (intel->drawY * pitch + intel->drawX) * irb->region->cpp;
+
+
+#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
+
+/**
+ ** 16-bit depthbuffer functions.
+ **/
+#define WRITE_DEPTH( _x, _y, d ) \
+ ((GLushort *)buf)[(_x) + (_y) * pitch] = d;
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = ((GLushort *)buf)[(_x) + (_y) * pitch];
+
+
+#define TAG(x) intel##x##_z16
+#include "depthtmp.h"
+
+
+/**
+ ** 24/8-bit interleaved depth/stencil functions
+ ** Note: we're actually reading back combined depth+stencil values.
+ ** The wrappers in main/depthstencil.c are used to extract the depth
+ ** and stencil values.
+ **/
+/* Change ZZZS -> SZZZ */
+#define WRITE_DEPTH( _x, _y, d ) { \
+ GLuint tmp = ((d) >> 8) | ((d) << 24); \
+ ((GLuint *)buf)[(_x) + (_y) * pitch] = tmp; \
+}
+
+/* Change SZZZ -> ZZZS */
+#define READ_DEPTH( d, _x, _y ) { \
+ GLuint tmp = ((GLuint *)buf)[(_x) + (_y) * pitch]; \
+ d = (tmp << 8) | (tmp >> 24); \
+}
+
+#define TAG(x) intel##x##_z24_s8
+#include "depthtmp.h"
+
+
+/**
+ ** 8-bit stencil function (XXX FBO: This is obsolete)
+ **/
+#define WRITE_STENCIL( _x, _y, d ) { \
+ GLuint tmp = ((GLuint *)buf)[(_x) + (_y) * pitch]; \
+ tmp &= 0xffffff; \
+ tmp |= ((d) << 24); \
+ ((GLuint *) buf)[(_x) + (_y) * pitch] = tmp; \
+}
+
+#define READ_STENCIL( d, _x, _y ) \
+ d = ((GLuint *)buf)[(_x) + (_y) * pitch] >> 24;
+
+#define TAG(x) intel##x##_z24_s8
+#include "stenciltmp.h"
+
+
+
+/**
+ * Map or unmap all the renderbuffers which we may need during
+ * software rendering.
+ * XXX in the future, we could probably convey extra information to
+ * reduce the number of mappings needed. I.e. if doing a glReadPixels
+ * from the depth buffer, we really only need one mapping.
+ *
+ * XXX Rewrite this function someday.
+ * We can probably just loop over all the renderbuffer attachments,
+ * map/unmap all of them, and not worry about the _ColorDrawBuffers
+ * _ColorReadBuffer, _DepthBuffer or _StencilBuffer fields.
+ */
+static void
+intel_map_unmap_buffers(struct intel_context *intel, GLboolean map)
+{
+ GLcontext *ctx = &intel->ctx;
+ GLuint i, j;
+ struct intel_renderbuffer *irb;
+
+ /* color draw buffers */
+ for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
+ for (j = 0; j < ctx->DrawBuffer->_NumColorDrawBuffers[i]; j++) {
+ struct gl_renderbuffer *rb =
+ ctx->DrawBuffer->_ColorDrawBuffers[i][j];
+ irb = intel_renderbuffer(rb);
+ if (irb) {
+ /* this is a user-created intel_renderbuffer */
+ if (irb->region) {
+ if (map)
+ intel_region_map(intel->intelScreen, irb->region);
+ else
+ intel_region_unmap(intel->intelScreen, irb->region);
+ }
+ irb->pfMap = irb->region->map;
+ irb->pfPitch = irb->region->pitch;
+ }
+ }
+ }
+
+ /* check for render to textures */
+ for (i = 0; i < BUFFER_COUNT; i++) {
+ struct gl_renderbuffer_attachment *att =
+ ctx->DrawBuffer->Attachment + i;
+ struct gl_texture_object *tex = att->Texture;
+ if (tex) {
+ /* render to texture */
+ ASSERT(att->Renderbuffer);
+ if (map) {
+ struct gl_texture_image *texImg;
+ texImg = tex->Image[att->CubeMapFace][att->TextureLevel];
+ intel_tex_map_images(intel, intel_texture_object(tex));
+ }
+ else {
+ intel_tex_unmap_images(intel, intel_texture_object(tex));
+ }
+ }
+ }
+
+ /* color read buffers */
+ irb = intel_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
+ if (irb && irb->region) {
+ if (map)
+ intel_region_map(intel->intelScreen, irb->region);
+ else
+ intel_region_unmap(intel->intelScreen, irb->region);
+ irb->pfMap = irb->region->map;
+ irb->pfPitch = irb->region->pitch;
+ }
+
+ /* Account for front/back color page flipping.
+ * The span routines use the pfMap and pfPitch fields which will
+ * swap the front/back region map/pitch if we're page flipped.
+ * Do this after mapping, above, so the map field is valid.
+ */
+#if 0
+ if (map && ctx->DrawBuffer->Name == 0) {
+ struct intel_renderbuffer *irbFront
+ = intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_FRONT_LEFT);
+ struct intel_renderbuffer *irbBack
+ = intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_BACK_LEFT);
+ if (irbBack) {
+ /* double buffered */
+ if (intel->sarea->pf_current_page == 0) {
+ irbFront->pfMap = irbFront->region->map;
+ irbFront->pfPitch = irbFront->region->pitch;
+ irbBack->pfMap = irbBack->region->map;
+ irbBack->pfPitch = irbBack->region->pitch;
+ }
+ else {
+ irbFront->pfMap = irbBack->region->map;
+ irbFront->pfPitch = irbBack->region->pitch;
+ irbBack->pfMap = irbFront->region->map;
+ irbBack->pfPitch = irbFront->region->pitch;
+ }
+ }
+ }
+#endif
+
+ /* depth buffer (Note wrapper!) */
+ if (ctx->DrawBuffer->_DepthBuffer) {
+ irb = intel_renderbuffer(ctx->DrawBuffer->_DepthBuffer->Wrapped);
+ if (irb && irb->region && irb->Base.Name != 0) {
+ if (map) {
+ intel_region_map(intel->intelScreen, irb->region);
+ irb->pfMap = irb->region->map;
+ irb->pfPitch = irb->region->pitch;
+ }
+ else {
+ intel_region_unmap(intel->intelScreen, irb->region);
+ irb->pfMap = NULL;
+ irb->pfPitch = 0;
+ }
+ }
+ }
+
+ /* stencil buffer (Note wrapper!) */
+ if (ctx->DrawBuffer->_StencilBuffer) {
+ irb = intel_renderbuffer(ctx->DrawBuffer->_StencilBuffer->Wrapped);
+ if (irb && irb->region && irb->Base.Name != 0) {
+ if (map) {
+ intel_region_map(intel->intelScreen, irb->region);
+ irb->pfMap = irb->region->map;
+ irb->pfPitch = irb->region->pitch;
+ }
+ else {
+ intel_region_unmap(intel->intelScreen, irb->region);
+ irb->pfMap = NULL;
+ irb->pfPitch = 0;
+ }
+ }
+ }
+}
+
+
+
+/**
+ * Prepare for softare rendering. Map current read/draw framebuffers'
+ * renderbuffes and all currently bound texture objects.
+ *
+ * Old note: Moved locking out to get reasonable span performance.
+ */
+void
+intelSpanRenderStart(GLcontext * ctx)
+{
+ struct intel_context *intel = intel_context(ctx);
+ GLuint i;
+
+ intelFinish(&intel->ctx);
+ LOCK_HARDWARE(intel);
+
+#if 0
+ /* Just map the framebuffer and all textures. Bufmgr code will
+ * take care of waiting on the necessary fences:
+ */
+ intel_region_map(intel->intelScreen, intel->front_region);
+ intel_region_map(intel->intelScreen, intel->back_region);
+ intel_region_map(intel->intelScreen, intel->intelScreen->depth_region);
+#endif
+
+ for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) {
+ if (ctx->Texture.Unit[i]._ReallyEnabled) {
+ struct gl_texture_object *texObj = ctx->Texture.Unit[i]._Current;
+ intel_tex_map_images(intel, intel_texture_object(texObj));
+ }
+ }
+
+ intel_map_unmap_buffers(intel, GL_TRUE);
+}
+
+/**
+ * Called when done softare rendering. Unmap the buffers we mapped in
+ * the above function.
+ */
+void
+intelSpanRenderFinish(GLcontext * ctx)
+{
+ struct intel_context *intel = intel_context(ctx);
+ GLuint i;
+
+ _swrast_flush(ctx);
+
+ /* Now unmap the framebuffer:
+ */
+#if 0
+ intel_region_unmap(intel, intel->front_region);
+ intel_region_unmap(intel, intel->back_region);
+ intel_region_unmap(intel, intel->intelScreen->depth_region);
+#endif
+
+ for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) {
+ if (ctx->Texture.Unit[i]._ReallyEnabled) {
+ struct gl_texture_object *texObj = ctx->Texture.Unit[i]._Current;
+ intel_tex_unmap_images(intel, intel_texture_object(texObj));
+ }
+ }
+
+ intel_map_unmap_buffers(intel, GL_FALSE);
+
+ UNLOCK_HARDWARE(intel);
+}
+
+
+void
+intelInitSpanFuncs(GLcontext * ctx)
+{
+ struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
+ swdd->SpanRenderStart = intelSpanRenderStart;
+ swdd->SpanRenderFinish = intelSpanRenderFinish;
+}
+
+
+/**
+ * Plug in appropriate span read/write functions for the given renderbuffer.
+ * These are used for the software fallbacks.
+ */
+void
+intel_set_span_functions(struct gl_renderbuffer *rb)
+{
+ if (rb->_ActualFormat == GL_RGB5) {
+ /* 565 RGB */
+ intelInitPointers_RGB565(rb);
+ }
+ else if (rb->_ActualFormat == GL_RGBA8) {
+ /* 8888 RGBA */
+ intelInitPointers_ARGB8888(rb);
+ }
+ else if (rb->_ActualFormat == GL_DEPTH_COMPONENT16) {
+ intelInitDepthPointers_z16(rb);
+ }
+ else if (rb->_ActualFormat == GL_DEPTH_COMPONENT24 || /* XXX FBO remove */
+ rb->_ActualFormat == GL_DEPTH24_STENCIL8_EXT) {
+ intelInitDepthPointers_z24_s8(rb);
+ }
+ else if (rb->_ActualFormat == GL_STENCIL_INDEX8_EXT) { /* XXX FBO remove */
+ intelInitStencilPointers_z24_s8(rb);
+ }
+ else {
+ _mesa_problem(NULL,
+ "Unexpected _ActualFormat in intelSetSpanFunctions");
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 05:47:39 +0000