051fb87cab
Expand GAL native test harness from 24 to 28 scenarios covering all 70 GAL methods. New scenarios: - scenario_text_attrs.cpp (24): Text attribute APIs (SetGlyphSize, SetFontBold/Italic/Underlined, SetTextMirrored, justification) - scenario_glyphs.cpp (25): DrawGlyph/DrawGlyphs with stroke glyphs - scenario_bitmap.cpp (26): DrawBitmap with test patterns - scenario_transform.cpp (27): Transform() API documentation Additional API coverage in existing scenarios: - Flush() in test harness - SetFlip(), SetRotation() in screen-transform - SetDepthRange() in depth-testing - GetGridPoint() in grid-native New stub files: - kifont_stub.h: STROKE_GLYPH factory functions for letter glyphs - bitmap_base_stub.h: Test pattern generators (checkerboard, gradient) Note: Bitmap scenario shows empty panels - DrawBitmap uses legacy OpenGL immediate mode (glBegin/glEnd) which doesn't work while shader is active. This is a known limitation when testing outside KiCad's VIEW rendering flow. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
200 lines
6.8 KiB
C++
200 lines
6.8 KiB
C++
/**
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* Depth Testing Scenario
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*
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* Tests GAL::EnableDepthTest() - explicit depth test control
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*
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* Depth testing determines whether fragments are drawn based on their
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* depth value. When enabled with GL_LESS, closer fragments overwrite
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* farther ones. This test demonstrates depth ordering with overlapping shapes.
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*/
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#include <gal/graphics_abstraction_layer.h>
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#include <cmath>
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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namespace GALTest {
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using KIGFX::COLOR4D;
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using KIGFX::GAL;
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void RenderDepthTesting(GAL* gal, int width, int height) {
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// Enable depth testing
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gal->EnableDepthTest(true);
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// Test SetDepthRange() API - sets the near/far depth range for rendering
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// x = near, y = far - this maps layer depths to NDC z-values
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// Default is typically VECTOR2D(0.1, 100) for KiCad
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gal->SetDepthRange(VECTOR2D(0.1, 100));
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gal->SetIsFill(true);
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gal->SetIsStroke(false);
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// Section 1: Overlapping circles with explicit depth ordering
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// Using SetLayerDepth - lower values are closer to camera
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// Background reference
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gal->SetLayerDepth(100);
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gal->SetFillColor(COLOR4D(0.15, 0.15, 0.18, 1.0));
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gal->DrawRectangle(VECTOR2D(20, 20), VECTOR2D(280, 200));
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// Draw circles from back to front
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gal->SetLayerDepth(80);
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gal->SetFillColor(COLOR4D(0.8, 0.2, 0.2, 0.9));
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gal->DrawCircle(VECTOR2D(100, 100), 50);
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gal->SetLayerDepth(60);
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gal->SetFillColor(COLOR4D(0.2, 0.8, 0.2, 0.9));
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gal->DrawCircle(VECTOR2D(140, 110), 50);
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gal->SetLayerDepth(40);
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gal->SetFillColor(COLOR4D(0.2, 0.2, 0.8, 0.9));
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gal->DrawCircle(VECTOR2D(180, 100), 50);
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gal->SetLayerDepth(20);
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gal->SetFillColor(COLOR4D(0.8, 0.8, 0.2, 0.9));
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gal->DrawCircle(VECTOR2D(220, 90), 50);
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// Section 2: Depth ordering with rectangles
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gal->SetLayerDepth(100);
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gal->SetFillColor(COLOR4D(0.15, 0.15, 0.18, 1.0));
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gal->DrawRectangle(VECTOR2D(300, 20), VECTOR2D(560, 200));
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// Stack of rectangles
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for (int i = 0; i < 5; i++) {
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double t = (double)i / 4.0;
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gal->SetLayerDepth(90 - i * 15);
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gal->SetFillColor(COLOR4D(0.3 + t * 0.5, 0.3 + t * 0.2, 0.8 - t * 0.3, 0.9));
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gal->DrawRectangle(
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VECTOR2D(320 + i * 25, 40 + i * 20),
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VECTOR2D(420 + i * 25, 120 + i * 20)
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);
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}
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// Section 3: Complex depth scene (PCB-like)
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gal->SetLayerDepth(100);
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gal->SetFillColor(COLOR4D(0.1, 0.2, 0.1, 1.0));
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gal->DrawRectangle(VECTOR2D(580, 20), VECTOR2D(780, 200));
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// Traces at depth 70
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gal->SetLayerDepth(70);
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gal->SetFillColor(COLOR4D(0.7, 0.5, 0.2, 1.0));
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gal->DrawSegment(VECTOR2D(600, 60), VECTOR2D(760, 60), 8);
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gal->DrawSegment(VECTOR2D(600, 110), VECTOR2D(760, 110), 8);
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gal->DrawSegment(VECTOR2D(600, 160), VECTOR2D(760, 160), 8);
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// Pads at depth 50 (above traces)
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gal->SetLayerDepth(50);
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gal->SetFillColor(COLOR4D(0.85, 0.65, 0.25, 1.0));
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gal->DrawCircle(VECTOR2D(620, 60), 15);
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gal->DrawCircle(VECTOR2D(680, 60), 15);
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gal->DrawCircle(VECTOR2D(740, 60), 15);
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gal->DrawCircle(VECTOR2D(620, 110), 15);
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gal->DrawCircle(VECTOR2D(680, 110), 15);
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gal->DrawCircle(VECTOR2D(740, 110), 15);
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gal->DrawCircle(VECTOR2D(620, 160), 15);
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gal->DrawCircle(VECTOR2D(680, 160), 15);
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gal->DrawCircle(VECTOR2D(740, 160), 15);
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// Holes at depth 30 (above pads)
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gal->SetLayerDepth(30);
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gal->SetFillColor(COLOR4D(0.1, 0.1, 0.1, 1.0));
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gal->DrawCircle(VECTOR2D(620, 60), 6);
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gal->DrawCircle(VECTOR2D(680, 60), 6);
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gal->DrawCircle(VECTOR2D(740, 60), 6);
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gal->DrawCircle(VECTOR2D(620, 110), 6);
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gal->DrawCircle(VECTOR2D(680, 110), 6);
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gal->DrawCircle(VECTOR2D(740, 110), 6);
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gal->DrawCircle(VECTOR2D(620, 160), 6);
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gal->DrawCircle(VECTOR2D(680, 160), 6);
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gal->DrawCircle(VECTOR2D(740, 160), 6);
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// Section 4: Interleaved depths
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gal->SetLayerDepth(100);
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gal->SetFillColor(COLOR4D(0.18, 0.15, 0.18, 1.0));
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gal->DrawRectangle(VECTOR2D(20, 220), VECTOR2D(280, 400));
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// Create a checkerboard-like depth pattern
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for (int row = 0; row < 3; row++) {
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for (int col = 0; col < 3; col++) {
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int depth = ((row + col) % 2 == 0) ? 60 : 40;
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double t = (row * 3 + col) / 8.0;
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gal->SetLayerDepth(depth);
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gal->SetFillColor(COLOR4D(0.8 * t + 0.2, 0.3 + 0.5 * (1 - t), 0.5, 0.9));
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gal->DrawCircle(VECTOR2D(70 + col * 70, 270 + row * 50), 25);
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}
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}
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// Section 5: AdvanceDepth demonstration
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gal->SetLayerDepth(100);
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gal->SetFillColor(COLOR4D(0.15, 0.18, 0.15, 1.0));
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gal->DrawRectangle(VECTOR2D(300, 220), VECTOR2D(560, 400));
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// Use AdvanceDepth to automatically increment depth
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gal->SetLayerDepth(90);
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double cx = 430;
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double cy = 310;
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for (int i = 0; i < 8; i++) {
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double angle = i * M_PI / 4;
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double r = 60;
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double x = cx + cos(angle) * r;
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double y = cy + sin(angle) * r;
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double t = (double)i / 7.0;
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gal->SetFillColor(COLOR4D(1.0 - t * 0.5, 0.3 + t * 0.4, 0.3 + t * 0.5, 0.9));
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gal->DrawCircle(VECTOR2D(x, y), 30);
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gal->AdvanceDepth(); // Each subsequent circle is closer
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}
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// Center circle (closest)
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gal->SetFillColor(COLOR4D(1.0, 1.0, 1.0, 0.95));
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gal->DrawCircle(VECTOR2D(cx, cy), 25);
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// Section 6: Depth test off comparison
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// This section shows what happens without proper depth ordering
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gal->SetLayerDepth(100);
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gal->SetFillColor(COLOR4D(0.18, 0.18, 0.15, 1.0));
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gal->DrawRectangle(VECTOR2D(580, 220), VECTOR2D(780, 400));
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// All at same depth - draw order determines visibility
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gal->SetLayerDepth(50);
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gal->SetFillColor(COLOR4D(0.8, 0.2, 0.2, 0.9));
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gal->DrawCircle(VECTOR2D(640, 300), 40);
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gal->SetFillColor(COLOR4D(0.2, 0.8, 0.2, 0.9));
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gal->DrawCircle(VECTOR2D(680, 310), 40);
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gal->SetFillColor(COLOR4D(0.2, 0.2, 0.8, 0.9));
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gal->DrawCircle(VECTOR2D(720, 300), 40);
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// Labels/frames
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gal->SetLayerDepth(10);
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gal->SetIsFill(false);
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gal->SetIsStroke(true);
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gal->SetLineWidth(2.0);
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gal->SetStrokeColor(COLOR4D(0.4, 0.4, 0.5, 0.8));
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gal->DrawRectangle(VECTOR2D(20, 20), VECTOR2D(280, 200));
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gal->DrawRectangle(VECTOR2D(300, 20), VECTOR2D(560, 200));
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gal->DrawRectangle(VECTOR2D(580, 20), VECTOR2D(780, 200));
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gal->DrawRectangle(VECTOR2D(20, 220), VECTOR2D(280, 400));
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gal->DrawRectangle(VECTOR2D(300, 220), VECTOR2D(560, 400));
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gal->DrawRectangle(VECTOR2D(580, 220), VECTOR2D(780, 400));
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// Bottom info bar
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gal->SetLayerDepth(100);
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gal->SetIsFill(true);
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gal->SetFillColor(COLOR4D(0.12, 0.12, 0.15, 1.0));
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gal->DrawRectangle(VECTOR2D(20, 420), VECTOR2D(780, 480));
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gal->SetIsFill(false);
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gal->SetStrokeColor(COLOR4D(0.3, 0.3, 0.4, 0.8));
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gal->SetLineWidth(1.0);
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gal->DrawRectangle(VECTOR2D(20, 420), VECTOR2D(780, 480));
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}
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} // namespace GALTest
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