diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/i915/intel_tris.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i915/intel_tris.c b/src/mesa/drivers/dri/i915/intel_tris.c index 78e9bd160f..1ba49d8f6e 100644 --- a/src/mesa/drivers/dri/i915/intel_tris.c +++ b/src/mesa/drivers/dri/i915/intel_tris.c @@ -188,8 +188,20 @@ intel_draw_quad(struct intel_context *intel, COPY_DWORDS(j, vb, vertsize, v0); COPY_DWORDS(j, vb, vertsize, v1); - COPY_DWORDS(j, vb, vertsize, v3); - COPY_DWORDS(j, vb, vertsize, v1); + + /* If smooth shading, draw like a trifan which gives better + * rasterization. Otherwise draw as two triangles with provoking + * vertex in third position as required for flat shading. + */ + if (intel->ctx.Light.ShadeModel == GL_FLAT) { + COPY_DWORDS(j, vb, vertsize, v3); + COPY_DWORDS(j, vb, vertsize, v1); + } + else { + COPY_DWORDS(j, vb, vertsize, v2); + COPY_DWORDS(j, vb, vertsize, v0); + } + COPY_DWORDS(j, vb, vertsize, v2); COPY_DWORDS(j, vb, vertsize, v3); } |