Verified Commit 4ceae3b0 authored by Lee Salzman's avatar Lee Salzman Committed by ma1
Browse files

Bug 2045625. a=RyanVM 

Original Revision: https://phabricator.services.mozilla.com/D305785

Differential Revision: https://phabricator.services.mozilla.com/D307126
parent 9e14fc50

gfx/wr/swgl/src/rasterize.h

+9 −7
Changes for gfx/wr/swgl/src/rasterize.h: 9 added lines, 7 removed lines.
Original line number Diff line number Diff line
@@ -595,15 +595,15 @@ static ALWAYS_INLINE IntRange clip_distance_range(const E& left, 
// Converts a run array into a flattened array of depth samples. This just

// walks through every run and fills the samples with the depth value from

// the run.

static void flatten_depth_runs(DepthRun* runs, size_t width) {

static void flatten_depth_runs(DepthRun* runs, int width) {

  if (runs->is_flat()) {

    return;

  }

  while (width > 0) {

    size_t n = runs->count;

    uint8_t n = runs->count;

    fill_flat_depth(runs, n, runs->depth);

    runs += n;

    width -= n;

    width -= int(n);

  }

}
@@ -1008,8 +1008,9 @@ static inline void draw_quad_spans(int nump, Point2D p[4], uint32_t z, 
        // edges per the change in right and left X. If the left and right X

        // positions are extremely close together, then avoid stepping the

        // interpolants.

        float stepScale = 1.0f / (right.x - left.x);

        if (!isfinite(stepScale)) stepScale = 0.0f;

        float stepWidth = right.x - left.x;

        float stepScale = 1.0f / stepWidth;

        if (!isfinite(stepWidth) || !isfinite(stepScale)) stepScale = 0.0f;

        Interpolants step = (right.interp - left.interp) * stepScale;

        // Advance current interpolants to X at start of span.

        Interpolants o = left.interp + step * (span.start + 0.5f - left.x);
@@ -1239,8 +1240,9 @@ static inline void draw_perspective_spans(int nump, Point3D* p, 
        // Calculate the fragment Z and W change per change in fragment X step.

        // If the left and right X positions are extremely close together, then

        // avoid stepping.

        float stepScale = 1.0f / (right.x() - left.x());

        if (!isfinite(stepScale)) stepScale = 0.0f;

        float stepWidth = right.x() - left.x();

        float stepScale = 1.0f / stepWidth;

        if (!isfinite(stepWidth) || !isfinite(stepScale)) stepScale = 0.0f;

        vec2_scalar stepZW = (right.zw() - left.zw()) * stepScale;

        // Calculate initial Z and W values for span start.

        vec2_scalar zw = left.zw() + stepZW * (span.start + 0.5f - left.x());