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path: root/src/gallium/drivers/softpipe/sp_setup.c
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Diffstat (limited to 'src/gallium/drivers/softpipe/sp_setup.c')
-rw-r--r--src/gallium/drivers/softpipe/sp_setup.c115
1 files changed, 71 insertions, 44 deletions
diff --git a/src/gallium/drivers/softpipe/sp_setup.c b/src/gallium/drivers/softpipe/sp_setup.c
index e64aee6d82..86354664e4 100644
--- a/src/gallium/drivers/softpipe/sp_setup.c
+++ b/src/gallium/drivers/softpipe/sp_setup.c
@@ -47,6 +47,7 @@
#define DEBUG_VERTS 0
#define DEBUG_FRAGS 0
+
/**
* Triangle edge info
*/
@@ -59,11 +60,16 @@ struct edge {
};
+/**
+ * Max number of quads (2x2 pixel blocks) to process per batch.
+ * This can't be arbitrarily increased since we depend on some 32-bit
+ * bitmasks (two bits per quad).
+ */
#define MAX_QUADS 16
/**
- * Triangle setup info (derived from draw_stage).
+ * Triangle setup info.
* Also used for line drawing (taking some liberties).
*/
struct setup_context {
@@ -140,7 +146,7 @@ cull_tri(const struct setup_context *setup, float det)
* Clip setup->quad against the scissor/surface bounds.
*/
static INLINE void
-quad_clip( struct setup_context *setup, struct quad_header *quad )
+quad_clip(struct setup_context *setup, struct quad_header *quad)
{
const struct pipe_scissor_state *cliprect = &setup->softpipe->cliprect;
const int minx = (int) cliprect->minx;
@@ -171,7 +177,7 @@ quad_clip( struct setup_context *setup, struct quad_header *quad )
* Emit a quad (pass to next stage) with clipping.
*/
static INLINE void
-clip_emit_quad( struct setup_context *setup, struct quad_header *quad )
+clip_emit_quad(struct setup_context *setup, struct quad_header *quad)
{
quad_clip( setup, quad );
@@ -188,12 +194,15 @@ clip_emit_quad( struct setup_context *setup, struct quad_header *quad )
* Given an X or Y coordinate, return the block/quad coordinate that it
* belongs to.
*/
-static INLINE int block( int x )
+static INLINE int
+block(int x)
{
return x & ~(2-1);
}
-static INLINE int block_x( int x )
+
+static INLINE int
+block_x(int x)
{
return x & ~(16-1);
}
@@ -202,9 +211,10 @@ static INLINE int block_x( int x )
/**
* Render a horizontal span of quads
*/
-static void flush_spans( struct setup_context *setup )
+static void
+flush_spans(struct setup_context *setup)
{
- const int step = 16;
+ const int step = MAX_QUADS;
const int xleft0 = setup->span.left[0];
const int xleft1 = setup->span.left[1];
const int xright0 = setup->span.right[0];
@@ -265,8 +275,9 @@ static void flush_spans( struct setup_context *setup )
#if DEBUG_VERTS
-static void print_vertex(const struct setup_context *setup,
- const float (*v)[4])
+static void
+print_vertex(const struct setup_context *setup,
+ const float (*v)[4])
{
int i;
debug_printf(" Vertex: (%p)\n", (void *) v);
@@ -280,16 +291,18 @@ static void print_vertex(const struct setup_context *setup,
}
#endif
+
/**
* Sort the vertices from top to bottom order, setting up the triangle
* edge fields (ebot, emaj, etop).
* \return FALSE if coords are inf/nan (cull the tri), TRUE otherwise
*/
-static boolean setup_sort_vertices( struct setup_context *setup,
- float det,
- const float (*v0)[4],
- const float (*v1)[4],
- const float (*v2)[4] )
+static boolean
+setup_sort_vertices(struct setup_context *setup,
+ float det,
+ const float (*v0)[4],
+ const float (*v1)[4],
+ const float (*v2)[4])
{
setup->vprovoke = v2;
@@ -374,6 +387,7 @@ static boolean setup_sort_vertices( struct setup_context *setup,
/* We need to know if this is a front or back-facing triangle for:
* - the GLSL gl_FrontFacing fragment attribute (bool)
* - two-sided stencil test
+ * 0 = front-facing, 1 = back-facing
*/
setup->facing =
((det > 0.0) ^
@@ -446,9 +460,10 @@ tri_apply_cylindrical_wrap(float v0,
* \param slot which attribute slot
* \param i which component of the slot (0..3)
*/
-static void const_coeff( struct setup_context *setup,
- struct tgsi_interp_coef *coef,
- uint vertSlot, uint i)
+static void
+const_coeff(struct setup_context *setup,
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
assert(i <= 3);
@@ -590,7 +605,8 @@ setup_fragcoord_coeff(struct setup_context *setup, uint slot)
* Compute the setup->coef[] array dadx, dady, a0 values.
* Must be called after setup->vmin,vmid,vmax,vprovoke are initialized.
*/
-static void setup_tri_coefficients( struct setup_context *setup )
+static void
+setup_tri_coefficients(struct setup_context *setup)
{
struct softpipe_context *softpipe = setup->softpipe;
const struct sp_fragment_shader *spfs = softpipe->fs;
@@ -649,7 +665,8 @@ static void setup_tri_coefficients( struct setup_context *setup )
}
if (spfs->info.input_semantic_name[fragSlot] == TGSI_SEMANTIC_FACE) {
- setup->coef[fragSlot].a0[0] = 1.0f - setup->facing;
+ /* convert 0 to 1.0 and 1 to -1.0 */
+ setup->coef[fragSlot].a0[0] = setup->facing * -2.0f + 1.0f;
setup->coef[fragSlot].dadx[0] = 0.0;
setup->coef[fragSlot].dady[0] = 0.0;
}
@@ -657,8 +674,8 @@ static void setup_tri_coefficients( struct setup_context *setup )
}
-
-static void setup_tri_edges( struct setup_context *setup )
+static void
+setup_tri_edges(struct setup_context *setup)
{
float vmin_x = setup->vmin[0][0] + setup->pixel_offset;
float vmid_x = setup->vmid[0][0] + setup->pixel_offset;
@@ -688,10 +705,11 @@ static void setup_tri_edges( struct setup_context *setup )
* Render the upper or lower half of a triangle.
* Scissoring/cliprect is applied here too.
*/
-static void subtriangle( struct setup_context *setup,
- struct edge *eleft,
- struct edge *eright,
- unsigned lines )
+static void
+subtriangle(struct setup_context *setup,
+ struct edge *eleft,
+ struct edge *eright,
+ int lines)
{
const struct pipe_scissor_state *cliprect = &setup->softpipe->cliprect;
const int minx = (int) cliprect->minx;
@@ -702,6 +720,7 @@ static void subtriangle( struct setup_context *setup,
int sy = (int)eleft->sy;
assert((int)eleft->sy == (int) eright->sy);
+ assert(lines >= 0);
/* clip top/bottom */
start_y = sy;
@@ -764,9 +783,9 @@ static void subtriangle( struct setup_context *setup,
* calculate it here.
*/
static float
-calc_det( const float (*v0)[4],
- const float (*v1)[4],
- const float (*v2)[4] )
+calc_det(const float (*v0)[4],
+ const float (*v1)[4],
+ const float (*v2)[4])
{
/* edge vectors e = v0 - v2, f = v1 - v2 */
const float ex = v0[0][0] - v2[0][0];
@@ -782,10 +801,11 @@ calc_det( const float (*v0)[4],
/**
* Do setup for triangle rasterization, then render the triangle.
*/
-void sp_setup_tri( struct setup_context *setup,
- const float (*v0)[4],
- const float (*v1)[4],
- const float (*v2)[4] )
+void
+sp_setup_tri(struct setup_context *setup,
+ const float (*v0)[4],
+ const float (*v1)[4],
+ const float (*v2)[4])
{
float det;
@@ -925,7 +945,7 @@ line_persp_coeff(const struct setup_context *setup,
* Compute the setup->coef[] array dadx, dady, a0 values.
* Must be called after setup->vmin,vmax are initialized.
*/
-static INLINE boolean
+static boolean
setup_line_coefficients(struct setup_context *setup,
const float (*v0)[4],
const float (*v1)[4])
@@ -1001,7 +1021,8 @@ setup_line_coefficients(struct setup_context *setup,
}
if (spfs->info.input_semantic_name[fragSlot] == TGSI_SEMANTIC_FACE) {
- setup->coef[fragSlot].a0[0] = 1.0f - setup->facing;
+ /* convert 0 to 1.0 and 1 to -1.0 */
+ setup->coef[fragSlot].a0[0] = setup->facing * -2.0f + 1.0f;
setup->coef[fragSlot].dadx[0] = 0.0;
setup->coef[fragSlot].dady[0] = 0.0;
}
@@ -1046,8 +1067,8 @@ plot(struct setup_context *setup, int x, int y)
*/
void
sp_setup_line(struct setup_context *setup,
- const float (*v0)[4],
- const float (*v1)[4])
+ const float (*v0)[4],
+ const float (*v1)[4])
{
int x0 = (int) v0[0][0];
int x1 = (int) v1[0][0];
@@ -1175,8 +1196,8 @@ point_persp_coeff(const struct setup_context *setup,
* XXX could optimize a lot for 1-pixel points.
*/
void
-sp_setup_point( struct setup_context *setup,
- const float (*v0)[4] )
+sp_setup_point(struct setup_context *setup,
+ const float (*v0)[4])
{
struct softpipe_context *softpipe = setup->softpipe;
const struct sp_fragment_shader *spfs = softpipe->fs;
@@ -1247,7 +1268,8 @@ sp_setup_point( struct setup_context *setup,
}
if (spfs->info.input_semantic_name[fragSlot] == TGSI_SEMANTIC_FACE) {
- setup->coef[fragSlot].a0[0] = 1.0f - setup->facing;
+ /* convert 0 to 1.0 and 1 to -1.0 */
+ setup->coef[fragSlot].a0[0] = setup->facing * -2.0f + 1.0f;
setup->coef[fragSlot].dadx[0] = 0.0;
setup->coef[fragSlot].dady[0] = 0.0;
}
@@ -1376,7 +1398,12 @@ sp_setup_point( struct setup_context *setup,
}
}
-void sp_setup_prepare( struct setup_context *setup )
+
+/**
+ * Called by vbuf code just before we start buffering primitives.
+ */
+void
+sp_setup_prepare(struct setup_context *setup)
{
struct softpipe_context *sp = setup->softpipe;
@@ -1402,8 +1429,8 @@ void sp_setup_prepare( struct setup_context *setup )
}
-
-void sp_setup_destroy_context( struct setup_context *setup )
+void
+sp_setup_destroy_context(struct setup_context *setup)
{
FREE( setup );
}
@@ -1412,7 +1439,8 @@ void sp_setup_destroy_context( struct setup_context *setup )
/**
* Create a new primitive setup/render stage.
*/
-struct setup_context *sp_setup_create_context( struct softpipe_context *softpipe )
+struct setup_context *
+sp_setup_create_context(struct softpipe_context *softpipe)
{
struct setup_context *setup = CALLOC_STRUCT(setup_context);
unsigned i;
@@ -1429,4 +1457,3 @@ struct setup_context *sp_setup_create_context( struct softpipe_context *softpipe
return setup;
}
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-14 01:52:58 +0000