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#include <mbgl/renderer/painter.hpp>
#include <mbgl/renderer/fill_bucket.hpp>
#include <mbgl/style/style.hpp>
#include <mbgl/style/style_layer.hpp>
#include <mbgl/style/style_layout.hpp>
#include <mbgl/map/sprite.hpp>
#include <mbgl/map/tile_id.hpp>
#include <mbgl/geometry/sprite_atlas.hpp>
#include <mbgl/shader/outline_shader.hpp>
#include <mbgl/shader/pattern_shader.hpp>
#include <mbgl/shader/plain_shader.hpp>
#include <mbgl/util/mat3.hpp>
using namespace mbgl;
void Painter::renderFill(FillBucket& bucket, const StyleLayer &layer_desc, const TileID& id, const mat4 &matrix) {
const FillProperties &properties = layer_desc.getProperties<FillProperties>();
mat4 vtxMatrix = translatedMatrix(matrix, properties.translate, id, properties.translateAnchor);
Color fill_color = properties.fill_color;
fill_color[0] *= properties.opacity;
fill_color[1] *= properties.opacity;
fill_color[2] *= properties.opacity;
fill_color[3] *= properties.opacity;
Color stroke_color = properties.stroke_color;
if (stroke_color[3] < 0) {
stroke_color = fill_color;
} else {
stroke_color[0] *= properties.opacity;
stroke_color[1] *= properties.opacity;
stroke_color[2] *= properties.opacity;
stroke_color[3] *= properties.opacity;
}
const bool pattern = !properties.image.from.empty();
bool outline = properties.antialias && !pattern && stroke_color != fill_color;
bool fringeline = properties.antialias && !pattern && stroke_color == fill_color;
config.depthTest = true;
// Because we're drawing top-to-bottom, and we update the stencil mask
// befrom, we have to draw the outline first (!)
if (outline && pass == RenderPass::Translucent) {
useProgram(outlineShader->program);
outlineShader->u_matrix = vtxMatrix;
lineWidth(2.0f); // This is always fixed and does not depend on the pixelRatio!
outlineShader->u_color = stroke_color;
// Draw the entire line
outlineShader->u_world = {{
static_cast<float>(frame.framebufferSize[0]),
static_cast<float>(frame.framebufferSize[1])
}};
config.depthRange = { strata, 1.0f };
bucket.drawVertices(*outlineShader);
}
if (pattern) {
// Image fill.
if (pass == RenderPass::Translucent) {
const SpriteAtlasPosition posA = spriteAtlas->getPosition(properties.image.from, true);
const SpriteAtlasPosition posB = spriteAtlas->getPosition(properties.image.to, true);
float factor = 8.0 / std::pow(2, state.getIntegerZoom() - id.z) / id.overscaling;
mat3 patternMatrixA;
matrix::identity(patternMatrixA);
matrix::scale(patternMatrixA, patternMatrixA,
1.0f / (posA.size[0] * factor * properties.image.fromScale),
1.0f / (posA.size[1] * factor * properties.image.fromScale));
mat3 patternMatrixB;
matrix::identity(patternMatrixB);
matrix::scale(patternMatrixB, patternMatrixB,
1.0f / (posB.size[0] * factor * properties.image.toScale),
1.0f / (posB.size[1] * factor * properties.image.toScale));
useProgram(patternShader->program);
patternShader->u_matrix = vtxMatrix;
patternShader->u_pattern_tl_a = posA.tl;
patternShader->u_pattern_br_a = posA.br;
patternShader->u_pattern_tl_b = posB.tl;
patternShader->u_pattern_br_b = posB.br;
patternShader->u_opacity = properties.opacity;
patternShader->u_image = 0;
patternShader->u_mix = properties.image.t;
patternShader->u_patternmatrix_a = patternMatrixA;
patternShader->u_patternmatrix_b = patternMatrixB;
MBGL_CHECK_ERROR(glActiveTexture(GL_TEXTURE0));
spriteAtlas->bind(true);
// Draw the actual triangles into the color & stencil buffer.
config.depthMask = GL_TRUE;
config.depthRange = { strata, 1.0f };
bucket.drawElements(*patternShader);
}
}
else {
// No image fill.
if ((fill_color[3] >= 1.0f) == (pass == RenderPass::Opaque)) {
// Only draw the fill when it's either opaque and we're drawing opaque
// fragments or when it's translucent and we're drawing translucent
// fragments
// Draw filling rectangle.
useProgram(plainShader->program);
plainShader->u_matrix = vtxMatrix;
plainShader->u_color = fill_color;
// Draw the actual triangles into the color & stencil buffer.
config.depthMask = GL_TRUE;
config.depthRange = { strata + strata_epsilon, 1.0f };
bucket.drawElements(*plainShader);
}
}
// Because we're drawing top-to-bottom, and we update the stencil mask
// below, we have to draw the outline first (!)
if (fringeline && pass == RenderPass::Translucent) {
useProgram(outlineShader->program);
outlineShader->u_matrix = vtxMatrix;
lineWidth(2.0f); // This is always fixed and does not depend on the pixelRatio!
outlineShader->u_color = fill_color;
// Draw the entire line
outlineShader->u_world = {{
static_cast<float>(frame.framebufferSize[0]),
static_cast<float>(frame.framebufferSize[1])
}};
config.depthRange = { strata + strata_epsilon + strata_epsilon, 1.0f };
bucket.drawVertices(*outlineShader);
}
}
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