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Diffstat (limited to 'src/mbgl/renderer/painter.cpp')
| -rw-r--r-- | src/mbgl/renderer/painter.cpp | 404 |
1 files changed, 0 insertions, 404 deletions
diff --git a/src/mbgl/renderer/painter.cpp b/src/mbgl/renderer/painter.cpp deleted file mode 100644 index 7d101f1530..0000000000 --- a/src/mbgl/renderer/painter.cpp +++ /dev/null @@ -1,404 +0,0 @@ -#include <mbgl/renderer/painter.hpp> -#include <mbgl/renderer/paint_parameters.hpp> -#include <mbgl/renderer/render_tile.hpp> -#include <mbgl/renderer/render_source.hpp> -#include <mbgl/renderer/render_style.hpp> -#include <mbgl/renderer/image_manager.hpp> -#include <mbgl/renderer/layers/render_fill_extrusion_layer.hpp> - -#include <mbgl/style/source.hpp> -#include <mbgl/style/source_impl.hpp> -#include <mbgl/style/layer_impl.hpp> - -#include <mbgl/map/view.hpp> -#include <mbgl/gl/debugging.hpp> -#include <mbgl/tile/tile.hpp> -#include <mbgl/geometry/line_atlas.hpp> -#include <mbgl/programs/program_parameters.hpp> -#include <mbgl/programs/programs.hpp> - -#include <mbgl/util/constants.hpp> -#include <mbgl/util/mat3.hpp> -#include <mbgl/util/string.hpp> -#include <mbgl/util/stopwatch.hpp> -#include <mbgl/util/clip_id.hpp> -#include <mbgl/util/logging.hpp> -#include <mbgl/util/color.hpp> - -#include <cassert> -#include <algorithm> -#include <iostream> -#include <unordered_set> - -namespace mbgl { - -using namespace style; - -static gl::VertexVector<FillLayoutVertex> tileVertices() { - gl::VertexVector<FillLayoutVertex> result; - result.emplace_back(FillProgram::layoutVertex({ 0, 0 })); - result.emplace_back(FillProgram::layoutVertex({ util::EXTENT, 0 })); - result.emplace_back(FillProgram::layoutVertex({ 0, util::EXTENT })); - result.emplace_back(FillProgram::layoutVertex({ util::EXTENT, util::EXTENT })); - return result; -} - -static gl::IndexVector<gl::Triangles> quadTriangleIndices() { - gl::IndexVector<gl::Triangles> result; - result.emplace_back(0, 1, 2); - result.emplace_back(1, 2, 3); - return result; -} - -static gl::IndexVector<gl::LineStrip> tileLineStripIndices() { - gl::IndexVector<gl::LineStrip> result; - result.emplace_back(0); - result.emplace_back(1); - result.emplace_back(3); - result.emplace_back(2); - result.emplace_back(0); - return result; -} - -static gl::VertexVector<RasterLayoutVertex> rasterVertices() { - gl::VertexVector<RasterLayoutVertex> result; - result.emplace_back(RasterProgram::layoutVertex({ 0, 0 }, { 0, 0 })); - result.emplace_back(RasterProgram::layoutVertex({ util::EXTENT, 0 }, { 32767, 0 })); - result.emplace_back(RasterProgram::layoutVertex({ 0, util::EXTENT }, { 0, 32767 })); - result.emplace_back(RasterProgram::layoutVertex({ util::EXTENT, util::EXTENT }, { 32767, 32767 })); - return result; -} - -static gl::VertexVector<ExtrusionTextureLayoutVertex> extrusionTextureVertices() { - gl::VertexVector<ExtrusionTextureLayoutVertex> result; - result.emplace_back(ExtrusionTextureProgram::layoutVertex({ 0, 0 })); - result.emplace_back(ExtrusionTextureProgram::layoutVertex({ 1, 0 })); - result.emplace_back(ExtrusionTextureProgram::layoutVertex({ 0, 1 })); - result.emplace_back(ExtrusionTextureProgram::layoutVertex({ 1, 1 })); - return result; -} - - -Painter::Painter(gl::Context& context_, - float pixelRatio, - const optional<std::string>& programCacheDir) - : context(context_), - tileVertexBuffer(context.createVertexBuffer(tileVertices())), - rasterVertexBuffer(context.createVertexBuffer(rasterVertices())), - extrusionTextureVertexBuffer(context.createVertexBuffer(extrusionTextureVertices())), - quadTriangleIndexBuffer(context.createIndexBuffer(quadTriangleIndices())), - tileBorderIndexBuffer(context.createIndexBuffer(tileLineStripIndices())) { - - tileTriangleSegments.emplace_back(0, 0, 4, 6); - tileBorderSegments.emplace_back(0, 0, 4, 5); - rasterSegments.emplace_back(0, 0, 4, 6); - extrusionTextureSegments.emplace_back(0, 0, 4, 6); - - programs = std::make_unique<Programs>(context, - ProgramParameters{ pixelRatio, false, programCacheDir }); -#ifndef NDEBUG - overdrawPrograms = - std::make_unique<Programs>(context, ProgramParameters{ pixelRatio, true, programCacheDir }); -#endif -} - -Painter::~Painter() = default; - -bool Painter::needsAnimation() const { - return frameHistory.needsAnimation(util::DEFAULT_TRANSITION_DURATION); -} - -void Painter::cleanup() { - context.performCleanup(); -} - -void Painter::render(RenderStyle& style, const FrameData& frame_, View& view) { - frame = frame_; - if (frame.contextMode == GLContextMode::Shared) { - context.setDirtyState(); - } - - PaintParameters parameters { -#ifndef NDEBUG - paintMode() == PaintMode::Overdraw ? *overdrawPrograms : *programs, -#else - *programs, -#endif - view - }; - - imageManager = style.imageManager.get(); - lineAtlas = style.lineAtlas.get(); - - evaluatedLight = style.getRenderLight().getEvaluated(); - - RenderData renderData = style.getRenderData(frame.debugOptions, state.getAngle()); - const std::vector<RenderItem>& order = renderData.order; - const std::unordered_set<RenderSource*>& sources = renderData.sources; - - // Update the default matrices to the current viewport dimensions. - state.getProjMatrix(projMatrix); - // Calculate a second projection matrix with the near plane clipped to 100 so as - // not to waste lots of depth buffer precision on very close empty space, for layer - // types (fill-extrusion) that use the depth buffer to emulate real-world space. - state.getProjMatrix(nearClippedProjMatrix, 100); - - pixelsToGLUnits = {{ 2.0f / state.getSize().width, -2.0f / state.getSize().height }}; - if (state.getViewportMode() == ViewportMode::FlippedY) { - pixelsToGLUnits[1] *= -1; - } - - frameHistory.record(frame.timePoint, state.getZoom(), - frame.mapMode == MapMode::Continuous ? util::DEFAULT_TRANSITION_DURATION : Milliseconds(0)); - - - // - UPLOAD PASS ------------------------------------------------------------------------------- - // Uploads all required buffers and images before we do any actual rendering. - { - MBGL_DEBUG_GROUP(context, "upload"); - - imageManager->upload(context, 0); - lineAtlas->upload(context, 0); - frameHistory.upload(context, 0); - } - - // - CLEAR ------------------------------------------------------------------------------------- - // Renders the backdrop of the OpenGL view. This also paints in areas where we don't have any - // tiles whatsoever. - { - MBGL_DEBUG_GROUP(context, "clear"); - view.bind(); - context.clear(paintMode() == PaintMode::Overdraw - ? Color::black() - : renderData.backgroundColor, - 1.0f, - 0); - } - - // - CLIPPING MASKS ---------------------------------------------------------------------------- - // Draws the clipping masks to the stencil buffer. - { - MBGL_DEBUG_GROUP(context, "clip"); - - // Update all clipping IDs. - clipIDGenerator = algorithm::ClipIDGenerator(); - for (const auto& source : sources) { - source->startRender(*this); - } - - MBGL_DEBUG_GROUP(context, "clipping masks"); - - static const style::FillPaintProperties::PossiblyEvaluated properties {}; - static const FillProgram::PaintPropertyBinders paintAttibuteData(properties, 0); - - for (const auto& clipID : clipIDGenerator.getClipIDs()) { - programs->fill.get(properties).draw( - context, - gl::Triangles(), - gl::DepthMode::disabled(), - gl::StencilMode { - gl::StencilMode::Always(), - static_cast<int32_t>(clipID.second.reference.to_ulong()), - 0b11111111, - gl::StencilMode::Keep, - gl::StencilMode::Keep, - gl::StencilMode::Replace - }, - gl::ColorMode::disabled(), - FillProgram::UniformValues { - uniforms::u_matrix::Value{ matrixForTile(clipID.first) }, - uniforms::u_world::Value{ context.viewport.getCurrentValue().size }, - }, - tileVertexBuffer, - quadTriangleIndexBuffer, - tileTriangleSegments, - paintAttibuteData, - properties, - state.getZoom(), - "clipping" - ); - } - } - -#if not MBGL_USE_GLES2 and not defined(NDEBUG) - // Render tile clip boundaries, using stencil buffer to calculate fill color. - if (frame.debugOptions & MapDebugOptions::StencilClip) { - context.setStencilMode(gl::StencilMode::disabled()); - context.setDepthMode(gl::DepthMode::disabled()); - context.setColorMode(gl::ColorMode::unblended()); - context.program = 0; - - // Reset the value in case someone else changed it, or it's dirty. - context.pixelTransferStencil = gl::value::PixelTransferStencil::Default; - - // Read the stencil buffer - const auto viewport = context.viewport.getCurrentValue(); - auto image = - context.readFramebuffer<AlphaImage, gl::TextureFormat::Stencil>(viewport.size, false); - - // Scale the Stencil buffer to cover the entire color space. - auto it = image.data.get(); - auto end = it + viewport.size.width * viewport.size.height; - const auto factor = 255.0f / *std::max_element(it, end); - for (; it != end; ++it) { - *it *= factor; - } - - context.pixelZoom = { 1, 1 }; - context.rasterPos = { -1, -1, 0, 1 }; - context.drawPixels(image); - - return; - } -#endif - - // Actually render the layers - if (debug::renderTree) { Log::Info(Event::Render, "{"); indent++; } - - depthRangeSize = 1 - (order.size() + 2) * numSublayers * depthEpsilon; - - // - OPAQUE PASS ------------------------------------------------------------------------------- - // Render everything top-to-bottom by using reverse iterators. Render opaque objects first. - { - pass = RenderPass::Opaque; - MBGL_DEBUG_GROUP(context, "opaque"); - - if (debug::renderTree) { - Log::Info(Event::Render, "%*s%s {", indent++ * 4, "", "opaque"); - } - - uint32_t i = 0; - for (auto it = order.rbegin(); it != order.rend(); ++it, ++i) { - currentLayer = i; - if (it->layer.hasRenderPass(pass)) { - MBGL_DEBUG_GROUP(context, it->layer.getID()); - it->layer.render(*this, parameters, it->source); - } - } - - if (debug::renderTree) { - Log::Info(Event::Render, "%*s%s", --indent * 4, "", "}"); - } - } - - // - TRANSLUCENT PASS -------------------------------------------------------------------------- - // Make a second pass, rendering translucent objects. This time, we render bottom-to-top. - { - pass = RenderPass::Translucent; - MBGL_DEBUG_GROUP(context, "translucent"); - - if (debug::renderTree) { - Log::Info(Event::Render, "%*s%s {", indent++ * 4, "", "translucent"); - } - - uint32_t i = static_cast<uint32_t>(order.size()) - 1; - for (auto it = order.begin(); it != order.end(); ++it, --i) { - currentLayer = i; - if (it->layer.hasRenderPass(pass)) { - MBGL_DEBUG_GROUP(context, it->layer.getID()); - it->layer.render(*this, parameters, it->source); - } - } - - if (debug::renderTree) { - Log::Info(Event::Render, "%*s%s", --indent * 4, "", "}"); - } - } - - if (debug::renderTree) { Log::Info(Event::Render, "}"); indent--; } - - // - DEBUG PASS -------------------------------------------------------------------------------- - // Renders debug overlays. - { - MBGL_DEBUG_GROUP(context, "debug"); - - // Finalize the rendering, e.g. by calling debug render calls per tile. - // This guarantees that we have at least one function per tile called. - // When only rendering layers via the stylesheet, it's possible that we don't - // ever visit a tile during rendering. - for (const auto& source : sources) { - source->finishRender(*this); - } - } - -#if not MBGL_USE_GLES2 and not defined(NDEBUG) - // Render the depth buffer. - if (frame.debugOptions & MapDebugOptions::DepthBuffer) { - context.setStencilMode(gl::StencilMode::disabled()); - context.setDepthMode(gl::DepthMode::disabled()); - context.setColorMode(gl::ColorMode::unblended()); - context.program = 0; - - // Scales the values in the depth buffer so that they cover the entire grayscale range. This - // makes it easier to spot tiny differences. - const float base = 1.0f / (1.0f - depthRangeSize); - context.pixelTransferDepth = { base, 1.0f - base }; - - // Read the stencil buffer - auto viewport = context.viewport.getCurrentValue(); - auto image = - context.readFramebuffer<AlphaImage, gl::TextureFormat::Depth>(viewport.size, false); - - context.pixelZoom = { 1, 1 }; - context.rasterPos = { -1, -1, 0, 1 }; - context.drawPixels(image); - } -#endif - - // TODO: Find a better way to unbind VAOs after we're done with them without introducing - // unnecessary bind(0)/bind(N) sequences. - { - MBGL_DEBUG_GROUP(context, "cleanup"); - - context.activeTexture = 1; - context.texture[1] = 0; - context.activeTexture = 0; - context.texture[0] = 0; - - context.bindVertexArray = 0; - } -} - -mat4 Painter::matrixForTile(const UnwrappedTileID& tileID) { - mat4 matrix; - state.matrixFor(matrix, tileID); - matrix::multiply(matrix, projMatrix, matrix); - return matrix; -} - -gl::DepthMode Painter::depthModeForSublayer(uint8_t n, gl::DepthMode::Mask mask) const { - float nearDepth = ((1 + currentLayer) * numSublayers + n) * depthEpsilon; - float farDepth = nearDepth + depthRangeSize; - return gl::DepthMode { gl::DepthMode::LessEqual, mask, { nearDepth, farDepth } }; -} - -gl::StencilMode Painter::stencilModeForClipping(const ClipID& id) const { - return gl::StencilMode { - gl::StencilMode::Equal { static_cast<uint32_t>(id.mask.to_ulong()) }, - static_cast<int32_t>(id.reference.to_ulong()), - 0, - gl::StencilMode::Keep, - gl::StencilMode::Keep, - gl::StencilMode::Replace - }; -} - -gl::ColorMode Painter::colorModeForRenderPass() const { - if (paintMode() == PaintMode::Overdraw) { - const float overdraw = 1.0f / 8.0f; - return gl::ColorMode { - gl::ColorMode::Add { - gl::ColorMode::ConstantColor, - gl::ColorMode::One - }, - Color { overdraw, overdraw, overdraw, 0.0f }, - gl::ColorMode::Mask { true, true, true, true } - }; - } else if (pass == RenderPass::Translucent) { - return gl::ColorMode::alphaBlended(); - } else { - return gl::ColorMode::unblended(); - } -} - -} // namespace mbgl |