diff options
| -rw-r--r-- | src/mesa/drivers/dri/tdfx/tdfx_context.c | 2 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/tdfx/tdfx_dd.c | 54 |
2 files changed, 55 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/tdfx/tdfx_context.c b/src/mesa/drivers/dri/tdfx/tdfx_context.c index 5ac1fb5986..e9c07bd862 100644 --- a/src/mesa/drivers/dri/tdfx/tdfx_context.c +++ b/src/mesa/drivers/dri/tdfx/tdfx_context.c @@ -60,6 +60,7 @@ #define need_GL_ARB_multisample /* #define need_GL_ARB_point_parameters */ +#define need_GL_ARB_occlusion_query #define need_GL_ARB_texture_compression #define need_GL_ARB_vertex_buffer_object /* #define need_GL_ARB_vertex_program */ @@ -82,6 +83,7 @@ const struct dri_extension card_extensions[] = { { "GL_ARB_multisample", GL_ARB_multisample_functions }, + { "GL_ARB_occlusion_query", GL_ARB_occlusion_query_functions }, { "GL_ARB_texture_mirrored_repeat", NULL }, { "GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions }, diff --git a/src/mesa/drivers/dri/tdfx/tdfx_dd.c b/src/mesa/drivers/dri/tdfx/tdfx_dd.c index b55af8571e..adbe0c0f33 100644 --- a/src/mesa/drivers/dri/tdfx/tdfx_dd.c +++ b/src/mesa/drivers/dri/tdfx/tdfx_dd.c @@ -38,6 +38,7 @@ #include "tdfx_vb.h" #include "tdfx_pixels.h" +#include "utils.h" #include "context.h" #include "enums.h" #include "framebuffer.h" @@ -108,6 +109,55 @@ static const GLubyte *tdfxDDGetString( GLcontext *ctx, GLenum name ) } +static void +tdfxBeginQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q) +{ + tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); + + (void) q; + + if (target == GL_SAMPLES_PASSED_ARB) { + LOCK_HARDWARE(fxMesa); + fxMesa->Glide.grFinish(); + fxMesa->Glide.grReset(GR_STATS_PIXELS); + UNLOCK_HARDWARE(fxMesa); + } +} + + +static void +tdfxEndQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q) +{ + tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); + FxI32 total_pixels; + FxI32 z_fail_pixels; + + + if (target == GL_SAMPLES_PASSED_ARB) { + LOCK_HARDWARE(fxMesa); + fxMesa->Glide.grFinish(); + + fxMesa->Glide.grGet(GR_STATS_PIXELS_DEPTHFUNC_FAIL, sizeof(FxI32), + &z_fail_pixels); + fxMesa->Glide.grGet(GR_STATS_PIXELS_IN, sizeof(FxI32), &total_pixels); + + q->Result = total_pixels - z_fail_pixels; + + /* Apparently, people have seen z_fail_pixels > total_pixels under + * some conditions on some 3Dfx hardware. The occlusion query spec + * requires that we clamp to 0. + */ + if (q->Result < 0) { + q->Result = 0; + } + + q->Ready = GL_TRUE; + + UNLOCK_HARDWARE(fxMesa); + } +} + + #define VISUAL_EQUALS_RGBA(vis, r, g, b, a) \ ((vis->redBits == r) && \ (vis->greenBits == g) && \ @@ -121,7 +171,9 @@ void tdfxDDInitDriverFuncs( const __GLcontextModes *visual, fprintf( stderr, "tdfx: %s()\n", __FUNCTION__ ); } - functions->GetString = tdfxDDGetString; + functions->GetString = tdfxDDGetString; + functions->BeginQuery = tdfxBeginQuery; + functions->EndQuery = tdfxEndQuery; /* Accelerated paths */ |