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source/blender/editors/gpencil/annotate_draw.c
| Show First 20 Lines • Show All 117 Lines • ▼ Show 20 Lines | static void gp_draw_stroke_buffer( | ||||
| const tGPspoint *pt = points; | const tGPspoint *pt = points; | ||||
| if (totpoints == 1) { | if (totpoints == 1) { | ||||
| /* if drawing a single point, draw it larger */ | /* if drawing a single point, draw it larger */ | ||||
| GPU_point_size((float)(thickness + 2) * points->pressure); | GPU_point_size((float)(thickness + 2) * points->pressure); | ||||
| immBindBuiltinProgram(GPU_SHADER_3D_POINT_UNIFORM_SIZE_UNIFORM_COLOR_AA); | immBindBuiltinProgram(GPU_SHADER_3D_POINT_UNIFORM_SIZE_UNIFORM_COLOR_AA); | ||||
| immUniformColor3fvAlpha(ink, ink[3]); | immUniformColor3fvAlpha(ink, ink[3]); | ||||
| immBegin(GPU_PRIM_POINTS, 1); | immBegin(GPU_PRIM_POINTS, 1); | ||||
| immVertex2iv(pos, &pt->x); | immVertex2fv(pos, &pt->x); | ||||
| } | } | ||||
| else { | else { | ||||
| float oldpressure = points[0].pressure; | float oldpressure = points[0].pressure; | ||||
| /* draw stroke curve */ | /* draw stroke curve */ | ||||
| GPU_line_width(max_ff(oldpressure * thickness, 1.0)); | GPU_line_width(max_ff(oldpressure * thickness, 1.0)); | ||||
| immBindBuiltinProgram(GPU_SHADER_2D_UNIFORM_COLOR); | immBindBuiltinProgram(GPU_SHADER_2D_UNIFORM_COLOR); | ||||
| immUniformColor3fvAlpha(ink, ink[3]); | immUniformColor3fvAlpha(ink, ink[3]); | ||||
| immBeginAtMost(GPU_PRIM_LINE_STRIP, totpoints); | immBeginAtMost(GPU_PRIM_LINE_STRIP, totpoints); | ||||
| for (int i = 0; i < totpoints; i++, pt++) { | for (int i = 0; i < totpoints; i++, pt++) { | ||||
| /* if there was a significant pressure change, stop the curve, change the thickness of the stroke, | /* if there was a significant pressure change, stop the curve, change the thickness of the stroke, | ||||
| * and continue drawing again (since line-width cannot change in middle of GL_LINE_STRIP) | * and continue drawing again (since line-width cannot change in middle of GL_LINE_STRIP) | ||||
| */ | */ | ||||
| if (fabsf(pt->pressure - oldpressure) > 0.2f) { | if (fabsf(pt->pressure - oldpressure) > 0.2f) { | ||||
| /* need to have 2 points to avoid immEnd assert error */ | /* need to have 2 points to avoid immEnd assert error */ | ||||
| if (draw_points < 2) { | if (draw_points < 2) { | ||||
| immVertex2iv(pos, &(pt - 1)->x); | immVertex2fv(pos, &(pt - 1)->x); | ||||
| } | } | ||||
| immEnd(); | immEnd(); | ||||
| draw_points = 0; | draw_points = 0; | ||||
| GPU_line_width(max_ff(pt->pressure * thickness, 1.0f)); | GPU_line_width(max_ff(pt->pressure * thickness, 1.0f)); | ||||
| immBeginAtMost(GPU_PRIM_LINE_STRIP, totpoints - i + 1); | immBeginAtMost(GPU_PRIM_LINE_STRIP, totpoints - i + 1); | ||||
| /* need to roll-back one point to ensure that there are no gaps in the stroke */ | /* need to roll-back one point to ensure that there are no gaps in the stroke */ | ||||
| if (i != 0) { | if (i != 0) { | ||||
| immVertex2iv(pos, &(pt - 1)->x); | immVertex2fv(pos, &(pt - 1)->x); | ||||
| draw_points++; | draw_points++; | ||||
| } | } | ||||
| oldpressure = pt->pressure; /* reset our threshold */ | oldpressure = pt->pressure; /* reset our threshold */ | ||||
| } | } | ||||
| /* now the point we want */ | /* now the point we want */ | ||||
| immVertex2iv(pos, &pt->x); | immVertex2fv(pos, &pt->x); | ||||
| draw_points++; | draw_points++; | ||||
| } | } | ||||
| /* need to have 2 points to avoid immEnd assert error */ | /* need to have 2 points to avoid immEnd assert error */ | ||||
| if (draw_points < 2) { | if (draw_points < 2) { | ||||
| immVertex2iv(pos, &(pt - 1)->x); | immVertex2fv(pos, &(pt - 1)->x); | ||||
| } | } | ||||
| } | } | ||||
| immEnd(); | immEnd(); | ||||
| immUnbindProgram(); | immUnbindProgram(); | ||||
| } | } | ||||
| /* --------- 2D Stroke Drawing Helpers --------- */ | /* --------- 2D Stroke Drawing Helpers --------- */ | ||||
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