Merge remote-tracking branch 'origin/terrain'

1 files changed, 60 insertions, 53 deletions

diff --git a/gfx/gl/shadowMapper.cpp b/gfx/gl/shadowMapper.cpp
index 79b39c0..1498bb0 100644
--- a/gfx/gl/shadowMapper.cpp
+++ b/gfx/gl/shadowMapper.cpp
@@ -15,7 +15,7 @@
 #include <tuple>
 #include <vector>
 
-ShadowMapper::ShadowMapper(const glm::ivec2 & s) :
+ShadowMapper::ShadowMapper(const TextureAbsCoord & s) :
 	fixedPoint {shadowFixedPoint_vs}, dynamicPointInst {shadowDynamicPointInst_vs}, size {s}
 {
 	glBindTexture(GL_TEXTURE_2D, depthMap);
@@ -24,7 +24,7 @@ ShadowMapper::ShadowMapper(const glm::ivec2 & s) :
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
-	static constexpr glm::vec4 border {std::numeric_limits<float>::infinity()};
+	static constexpr RGBA border {std::numeric_limits<RGBA::value_type>::infinity()};
 	glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, glm::value_ptr(border));
 
 	glBindFramebuffer(GL_FRAMEBUFFER, depthMapFBO);
@@ -37,7 +37,7 @@ ShadowMapper::ShadowMapper(const glm::ivec2 & s) :
 	glBindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
-constexpr std::array<std::array<glm::ivec4, ShadowMapper::SHADOW_BANDS>, ShadowMapper::SHADOW_BANDS> viewports {{
+constexpr std::array<std::array<TextureAbsRegion, ShadowMapper::SHADOW_BANDS>, ShadowMapper::SHADOW_BANDS> viewports {{
 		{{
 				{31, 31, 0, 0}, // full
 		}},
@@ -57,33 +57,34 @@ constexpr std::array<std::array<glm::ivec4, ShadowMapper::SHADOW_BANDS>, ShadowM
 				{1, 1, 1, 1}, // upper right
 		}},
 }};
-constexpr std::array<std::array<glm::vec4, ShadowMapper::SHADOW_BANDS>, ShadowMapper::SHADOW_BANDS> shadowMapRegions {{
-		{{
-				{0.5F, 0.5F, 0.5F, 0.5F}, // full
-		}},
-		{{
-				{0.5F, 0.25F, 0.5F, 0.25F}, // lower half
-				{0.5F, 0.25F, 0.5F, 0.75F}, // upper half
-		}},
-		{{
-				{0.5F, 0.25F, 0.5F, 0.25F}, // lower half
-				{0.25F, 0.25F, 0.25F, 0.75F}, // upper left
-				{0.25F, 0.25F, 0.75F, 0.75F}, // upper right
-		}},
-
-		{{
-				{0.25F, 0.25F, 0.25F, 0.25F}, // lower left
-				{0.25F, 0.25F, 0.75F, 0.25F}, // lower right
-				{0.25F, 0.25F, 0.25F, 0.75F}, // upper left
-				{0.25F, 0.25F, 0.75F, 0.75F}, // upper right
-		}},
-}};
-constexpr std::array<float, ShadowMapper::SHADOW_BANDS + 1> shadowBands {
-		1.F,
-		250.F,
-		750.F,
-		2500.F,
-		10000.F,
+constexpr std::array<std::array<TextureRelRegion, ShadowMapper::SHADOW_BANDS>, ShadowMapper::SHADOW_BANDS>
+		shadowMapRegions {{
+				{{
+						{0.5F, 0.5F, 0.5F, 0.5F}, // full
+				}},
+				{{
+						{0.5F, 0.25F, 0.5F, 0.25F}, // lower half
+						{0.5F, 0.25F, 0.5F, 0.75F}, // upper half
+				}},
+				{{
+						{0.5F, 0.25F, 0.5F, 0.25F}, // lower half
+						{0.25F, 0.25F, 0.25F, 0.75F}, // upper left
+						{0.25F, 0.25F, 0.75F, 0.75F}, // upper right
+				}},
+
+				{{
+						{0.25F, 0.25F, 0.25F, 0.25F}, // lower left
+						{0.25F, 0.25F, 0.75F, 0.25F}, // lower right
+						{0.25F, 0.25F, 0.25F, 0.75F}, // upper left
+						{0.25F, 0.25F, 0.75F, 0.75F}, // upper right
+				}},
+		}};
+constexpr std::array<GlobalDistance, ShadowMapper::SHADOW_BANDS + 1> shadowBands {
+		1000,
+		250000,
+		750000,
+		2500000,
+		10000000,
 };
 static_assert(viewports.size() == shadowMapRegions.size());
 static_assert(shadowBands.size() == shadowMapRegions.size() + 1);
@@ -104,16 +105,16 @@ struct DefinitionsInserter {
 	ShadowMapper::Definitions & out;
 };
 
-std::vector<std::array<glm::vec3, 4>>
-ShadowMapper::getBandViewExtents(const Camera & camera, const glm::mat4 & lightView)
+std::vector<std::array<RelativePosition3D, 4>>
+ShadowMapper::getBandViewExtents(const Camera & camera, const glm::mat4 & lightViewDir)
 {
-	std::vector<std::array<glm::vec3, 4>> bandViewExtents;
+	std::vector<std::array<RelativePosition3D, 4>> bandViewExtents;
 	for (const auto dist : shadowBands) {
 		const auto extents = camera.extentsAtDist(dist);
-		bandViewExtents.emplace_back(extents * [&lightView](const auto & e) -> glm::vec3 {
-			return lightView * glm::vec4(glm::vec3 {e}, 1);
+		bandViewExtents.emplace_back(extents * [&lightViewDir, cameraPos = camera.getPosition()](const auto & e) {
+			return glm::mat3(lightViewDir) * (e.xyz() - cameraPos);
 		});
-		if (std::none_of(extents.begin(), extents.end(), [targetDist = dist * 0.99F](const glm::vec4 & e) {
+		if (std::none_of(extents.begin(), extents.end(), [targetDist = dist - 1](const auto & e) {
 				return e.w > targetDist;
 			})) {
 			break;
@@ -123,19 +124,21 @@ ShadowMapper::getBandViewExtents(const Camera & camera, const glm::mat4 & lightV
 }
 
 ShadowMapper::Definitions
-ShadowMapper::update(const SceneProvider & scene, const glm::vec3 & dir, const Camera & camera) const
+ShadowMapper::update(const SceneProvider & scene, const Direction3D & dir, const Camera & camera) const
 {
 	glBindFramebuffer(GL_FRAMEBUFFER, depthMapFBO);
 	glClear(GL_DEPTH_BUFFER_BIT);
 	glCullFace(GL_FRONT);
 
-	const auto lightView = glm::lookAt(camera.getPosition(), camera.getPosition() + dir, up);
-	const auto bandViewExtents = getBandViewExtents(camera, lightView);
+	const auto lightViewDir = glm::lookAt({}, dir, up);
+	const auto lightViewPoint = camera.getPosition();
+	const auto bandViewExtents = getBandViewExtents(camera, lightViewDir);
 
 	Definitions out;
 	std::transform(bandViewExtents.begin(), std::prev(bandViewExtents.end()), std::next(bandViewExtents.begin()),
 			DefinitionsInserter {out},
-			[&scene, this, &lightView, bands = bandViewExtents.size() - 2, &out](const auto & near, const auto & far) {
+			[&scene, this, bands = bandViewExtents.size() - 2, &out, &lightViewPoint, &lightViewDir](
+					const auto & near, const auto & far) {
 				const auto extents_minmax = [extents = std::span {near.begin(), far.end()}](auto && comp) {
 					const auto mm = std::minmax_element(extents.begin(), extents.end(), comp);
 					return std::make_pair(comp.get(*mm.first), comp.get(*mm.second));
@@ -145,16 +148,16 @@ ShadowMapper::update(const SceneProvider & scene, const glm::vec3 & dir, const C
 					return glm::ortho(x.first, x.second, y.first, y.second, -z.second, -z.first);
 				}(extents_minmax(CompareBy {0}), extents_minmax(CompareBy {1}), extents_minmax(CompareBy {2}));
 
-				const auto lightViewProjection = lightProjection * lightView;
-				fixedPoint.setViewProjection(lightViewProjection);
-				dynamicPoint.setViewProjection(lightViewProjection);
-				dynamicPointInst.setViewProjection(lightViewProjection);
+				const auto lightViewDirProjection = lightProjection * lightViewDir;
+				fixedPoint.setViewProjection(lightViewPoint, lightViewDirProjection);
+				dynamicPoint.setViewProjection(lightViewPoint, lightViewDirProjection);
+				dynamicPointInst.setViewProjection(lightViewPoint, lightViewDirProjection);
 
 				const auto & viewport = viewports[bands][out.maps];
 				glViewport(size.x >> viewport.x, size.y >> viewport.y, size.x >> viewport.z, size.y >> viewport.w);
 				scene.shadows(*this);
 
-				return std::make_pair(lightViewProjection, shadowMapRegions[bands][out.maps]);
+				return std::make_pair(lightViewDirProjection, shadowMapRegions[bands][out.maps]);
 			});
 
 	glCullFace(GL_BACK);
@@ -162,13 +165,17 @@ ShadowMapper::update(const SceneProvider & scene, const glm::vec3 & dir, const C
 	return out;
 }
 
-ShadowMapper::FixedPoint::FixedPoint(const Shader & vs) : Program {vs}, viewProjectionLoc {*this, "viewProjection"} { }
+ShadowMapper::FixedPoint::FixedPoint(const Shader & vs) :
+	Program {vs}, viewProjectionLoc {*this, "viewProjection"}, viewPointLoc {*this, "viewPoint"}
+{
+}
 
 void
-ShadowMapper::FixedPoint::setViewProjection(const glm::mat4 & viewProjection) const
+ShadowMapper::FixedPoint::setViewProjection(const GlobalPosition3D viewPoint, const glm::mat4 & viewProjection) const
 {
 	use();
 	glUniformMatrix4fv(viewProjectionLoc, 1, GL_FALSE, glm::value_ptr(viewProjection));
+	glUniform3iv(viewPointLoc, 1, glm::value_ptr(viewPoint));
 }
 
 void
@@ -178,15 +185,17 @@ ShadowMapper::FixedPoint::use() const
 }
 
 ShadowMapper::DynamicPoint::DynamicPoint() :
-	Program {shadowDynamicPoint_vs}, viewProjectionLoc {*this, "viewProjection"}, modelLoc {*this, "model"}
+	Program {shadowDynamicPoint_vs}, viewProjectionLoc {*this, "viewProjection"}, viewPointLoc {*this, "viewPoint"},
+	modelLoc {*this, "model"}, modelPosLoc {*this, "modelPos"}
 {
 }
 
 void
-ShadowMapper::DynamicPoint::setViewProjection(const glm::mat4 & viewProjection) const
+ShadowMapper::DynamicPoint::setViewProjection(const GlobalPosition3D viewPoint, const glm::mat4 & viewProjection) const
 {
 	glUseProgram(*this);
 	glUniformMatrix4fv(viewProjectionLoc, 1, GL_FALSE, glm::value_ptr(viewProjection));
+	glUniform3iv(viewPointLoc, 1, glm::value_ptr(viewPoint));
 }
 
 void
@@ -194,13 +203,11 @@ ShadowMapper::DynamicPoint::use(const Location & location) const
 {
 	glUseProgram(*this);
 	setModel(location);
-	const auto model = glm::translate(location.pos) * rotate_ypr(location.rot);
-	glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model));
 }
 
 void
 ShadowMapper::DynamicPoint::setModel(const Location & location) const
 {
-	const auto model = glm::translate(location.pos) * rotate_ypr(location.rot);
-	glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model));
+	glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(rotate_ypr(location.rot)));
+	glUniform3iv(modelPosLoc, 1, glm::value_ptr(location.pos));
 }